Inch-to-Inch Male-Female Hex Thread Adapters
Change thread sizes or types, such as fine to coarse threads, on parts without changing gender. These adapters can also be used as standoffs to position components in assemblies and to create space between parts. They have an external hex, so you can tighten them with a wrench.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
18-8 stainless steel adapters resist corrosion in wet environments but will corrode when exposed to salt water and chemicals. They may be mildly magnetic. 316 stainless steel adapters are for use in wet environments and have the best corrosion resistance. Unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and chemicals. They may be mildly magnetic.
Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Gender | Thread Fit | Hex | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
Aluminum | ||||||||||||||
| 5/16"-32 | 1/2"-13 | 5/8" | 11/16" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 000000 |
18-8 Stainless Steel | ||||||||||||||
| 10-24 | 5/16"-32 | 3/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 10-32 | 5/16"-32 | 3/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-20 | 5/16"-32 | 1/2" | 15/32" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-28 | 5/16"-32 | 1/2" | 15/32" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-18 | 5/16"-32 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-24 | 5/16"-32 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 10-24 | 5/8" | 7/16" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 10-32 | 5/8" | 9/32" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 1/4"-20 | 5/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 1/4"-28 | 5/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 5/16"-18 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 5/16"-24 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 3/8"-16 | 5/8" | 9/16" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 3/8"-24 | 5/8" | 9/16" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 3/8"-32 | 5/8" | 9/16" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | 1/2"-13 | 5/8" | 11/16" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-20 | 5/8" | 11/16" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-28 | 5/8" | 11/16" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 3/8"-16 | 5/16"-32 | 3/4" | 15/32" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 3/8"-24 | 5/16"-32 | 3/4" | 15/32" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 3/8"-32 | 5/16"-32 | 3/4" | 15/32" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/2"-13 | 5/16"-32 | 7/8" | 15/32" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/2"-20 | 5/16"-32 | 7/8" | 15/32" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/2"-28 | 5/16"-32 | 7/8" | 15/32" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | ||||||||||||||
| 5/16"-32 | 10-32 | 5/8" | 9/32" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 5/16"-32 | 1/4"-20 | 5/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 5/16"-18 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 3/8"-16 | 5/8" | 9/16" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-13 | 5/8" | 11/16" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-20 | 5/8" | 11/16" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/2"-13 | 5/16"-32 | 7/8" | 15/32" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
Inch-to-Metric Male-Female Hex Thread Adapters
Change inch threads to metric with these adapters, or swap metric threads for inch. An external hex lets you tighten or loosen them with a wrench. You can also use them to increase or reduce your thread size, or to create space between parts in an assembly.
Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
At one third the weight of steel, aluminum adapters are the lightest option. They will not rust in damp or humid environments, but they will corrode if left in water.
18-8 stainless steel adapters can be used in wet environments, but chemicals or salt water will cause staining and rust spots.
For areas exposed to salt water or chemicals, 316 stainless steel adapters are the best choice. Only harsh chemicals, such as hydrochloric acid, will cause them to corrode.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Gender | Thread Fit | Hex | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | Pitch (A), mm | (B) | Pitch (B), mm | (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
Aluminum | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 5/16"-32 | __ | M8 | 1.25 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 5/8" | 3/4" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 5/16"-32 | __ | M5 | 0.5 | 5/8" | 9/32" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M5 | 0.8 | 5/8" | 9/32" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M6 | 0.75 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M6 | 1 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M8 | 1 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 5/8" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M8 | 1.25 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 5/8" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M10 | 1 | 5/8" | 9/16" | Male | Female | Class 2A | Class 6H | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M10 | 1.25 | 5/8" | 9/16" | Male | Female | Class 2A | Class 6H | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M10 | 1.5 | 5/8" | 9/16" | Male | Female | Class 2A | Class 6H | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-32 | __ | M12 | 1.25 | 5/8" | 11/16" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | __ | M12 | 1.5 | 5/8" | 11/16" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | __ | M12 | 1.75 | 5/8" | 11/16" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
Metric to Inch | ||||||||||||||||
| M6 | 0.75 | 5/16"-32 | __ | 1/2" | 15/32" | Male | Female | Class 6g | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M6 | 1 | 5/16"-32 | __ | 1/2" | 15/32" | Male | Female | Class 6g | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M8 | 1 | 5/16"-32 | __ | 1/2" | 5/8" | Male | Female | Class 6g | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M8 | 1.25 | 5/16"-32 | __ | 1/2" | 5/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M10 | 1 | 5/16"-32 | __ | 5/8" | 5/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M10 | 1.25 | 5/16"-32 | __ | 5/8" | 5/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M10 | 1.5 | 5/16"-32 | __ | 5/8" | 5/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M12 | 1.25 | 5/16"-32 | __ | 7/8" | 15/32" | Male | Female | Class 6g | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| M12 | 1.5 | 5/16"-32 | __ | 7/8" | 15/32" | Male | Female | Class 6g | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| M12 | 1.75 | 5/16"-32 | __ | 7/8" | 15/32" | Male | Female | Class 6g | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 5/16"-32 | __ | M5 | 0.8 | 5/8" | 9/32" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 5/16"-32 | __ | M6 | 1 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | __ | M8 | 1.25 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 5/8" | 3/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | __ | M12 | 1.25 | 5/8" | 11/16" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | __ | M12 | 1.75 | 5/8" | 11/16" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
Inch-to-Inch Female Hex Thread Adapters
Connect two differently sized male-threaded parts, such as threaded rods, and tighten with a standard wrench. The threads on these adapters have various sizes and spacing, so you can increase or decrease thread size or adapt from coarse to fine threading. You can also use them to change the gender of a connection from male to female. Small adapters can work as threaded standoffs, which position and separate circuit boards and other components in assemblies.
18-8 stainless steel adapters withstand wet environments but will corrode when exposed to salt water and other chloride solutions.
316 stainless steel adapters are ideal in wet environments and will not corrode when exposed to salt water or harsh chemicals.
Aluminum adapters are about one third of the weight of steel adapters and resist corrosion in wet environments.
Adapters that meet ASTM specifications are made from or plated with materials that adhere to standards for chemical and physical properties, such as hardness.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Hardness | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||||||
| 10-24 | 5/16"-32 | 5/16" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 10-32 | 5/16"-32 | 5/16" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 0000 | 0000 |
| 1/4"-20 | 5/16"-32 | 1/2" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 0000 | 0000 |
| 1/4"-28 | 5/16"-32 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 5/16"-32 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 5/16"-18 | 5/16"-32 | 5/16" | 5/16" | Class 2B | Class 2B | 13/16" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 5/16"-24 | 5/16"-32 | 5/16" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 5/16"-32 | 3/8"-16 | 5/16" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 5/16"-32 | 3/8"-24 | 5/16" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 5/16"-32 | 3/8"-32 | 5/16" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 5/16"-32 | 1/2"-13 | 5/16" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | 1/2"-20 | 5/16" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | 1/2"-28 | 5/16" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
316 Stainless Steel | ||||||||||||
| 1/4"-20 | 5/16"-32 | 1/2" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A276 | Rockwell B83 | 000000000 | 0000 | 0000 |
| 5/16"-32 | 3/8"-16 | 5/16" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | 1/2"-13 | 5/16" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | 1/2"-20 | 5/16" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
Aluminum | ||||||||||||
| 5/16"-32 | 3/8"-16 | 5/16" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM B211 | Rockwell B56 | 000000000 | 0000 | 0000 |
| 5/16"-32 | 1/2"-13 | 5/16" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM B211 | Rockwell B56 | 000000000 | 0000 | 0000 |
Inch-to-Metric Female Hex Thread Adapters
Adapt threaded rods from inch to metric. These adapters connect two male-threaded fasteners, so you can change the gender of a mating part or increase or decrease its thread size. The hex-shaped body fits into the head of a standard wrench. Small adapters can also be used as standoffs, positioning and separating circuit boards and other components in assemblies.
18-8 stainless steel adapters resist corrosion caused by water. They're good for wet and damp environments but will corrode when exposed to salt water and other chloride solutions.
316 stainless steel adapters have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel adapters, but unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and harsh chemicals.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Pitch (B), mm | (A) | (B), mm | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||||||||
| 5/16"-32 | M5 | 0.5 | 5/16" | 5 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 000000 | 000000 |
| 5/16"-32 | M5 | 0.8 | 5/16" | 5 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M6 | 0.75 | 5/16" | 6 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M6 | 1 | 5/16" | 6 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M8 | 1 | 5/16" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M8 | 1.25 | 5/16" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M10 | 1 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M10 | 1.25 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M10 | 1.5 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M12 | 1.25 | 5/16" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M12 | 1.5 | 5/16" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M12 | 1.75 | 5/16" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
316 Stainless Steel | ||||||||||||||
| 5/16"-32 | M5 | 0.8 | 5/16" | 5 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M6 | 1 | 5/16" | 6 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M8 | 1 | 5/16" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M8 | 1.25 | 5/16" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M10 | 1 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M10 | 1.25 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M10 | 1.5 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M12 | 1.25 | 5/16" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M12 | 1.5 | 5/16" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 5/16"-32 | M12 | 1.75 | 5/16" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
Aluminum | ||||||||||||||
| 5/16"-32 | M5 | 0.8 | 5/16" | 5 | Class 2B | Class 6H | 16mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 | 0000 |
| 5/16"-32 | M6 | 1 | 5/16" | 6 | Class 2B | Class 6H | 16mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 | 0000 |
| 5/16"-32 | M8 | 1.25 | 5/16" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 | 0000 |
| 5/16"-32 | M10 | 1.5 | 5/16" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 | 0000 |
Inch-to-Metric Male Hex Thread Adapters
One side inch, one side metric, and a hex in the middle—these handy fasteners connect two female-threaded parts, such as coupling nuts, adapting from inch threads to metric. Tighten with a standard wrench.
You can also use these adapters to change the gender of a mating part or increase or decrease its thread size. The small sizes work as standoffs, positioning and separating circuit boards and other components in assemblies.
18-8 stainless steel adapters resist corrosion caused by water. They're good for wet and damp environments but will corrode when exposed to salt water and other chloride solutions.
316 stainless steel adapters have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel adapters, but unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and harsh chemicals.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Pitch (B), mm | (A) | (B), mm | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | |||||||||||||
| 5/16"-32 | M5 | 0.5 | 5/8" | 9.5 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 000000 |
| 5/16"-32 | M5 | 0.8 | 5/8" | 9.5 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M6 | 0.75 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M6 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M8 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M8 | 1.25 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M10 | 1 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M10 | 1.25 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M10 | 1.5 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M12 | 1.25 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M12 | 1.5 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | M12 | 1.75 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | |||||||||||||
| 5/16"-32 | M5 | 0.8 | 5/8" | 9.5 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M6 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M8 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M8 | 1.25 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M10 | 1.25 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M10 | 1.5 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M12 | 1.25 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | M12 | 1.75 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
Aluminum | |||||||||||||
| 5/16"-32 | M5 | 0.8 | 5/8" | 9.5 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
| 5/16"-32 | M6 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
| 5/16"-32 | M8 | 1.25 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
| 5/16"-32 | M10 | 1.5 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
Inch-to-Inch Male Hex Thread Adapters
Need to join two female-threaded parts, such as coupling nuts, with dissimilar inch thread sizes? Attach them to these adapters and tighten the exterior hex nut for a secure connection. You can also use these adapters to change the gender of a mating part from female to male, increase or decrease the thread size, or convert the threads from fine to coarse (and vice versa). The smaller adapters act as threaded standoffs, positioning and separating circuit boards and other components in assemblies.
Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
18-8 stainless steel adapters resist corrosion caused by water. They're good for wet and damp environments but will corrode when exposed to salt water and other chloride solutions.
316 stainless steel adapters have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel adapters, but unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and harsh chemicals.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | ||||||||||||
| 10-24 | 5/16"-32 | 3/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 10-32 | 5/16"-32 | 3/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-20 | 5/16"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-28 | 5/16"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-18 | 5/16"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-24 | 5/16"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 3/8"-16 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 3/8"-24 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 3/8"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-13 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-20 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-28 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | ||||||||||||
| 1/4"-20 | 5/16"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 3/8"-16 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-13 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 5/16"-32 | 1/2"-20 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
Aluminum | ||||||||||||
| 5/16"-32 | 3/8"-16 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 0000 |
| 5/16"-32 | 1/2"-13 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |