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About Nuts, Materials, and Finishes
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About Socket Head Screws
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Mil. Spec. 18-8 Stainless Steel Socket Head Screws
Choose these screws for their adherence to strict military standards for material and construction. Dimensions meet Fed. Spec. FF-S-86 specifications. Screws may be mildly magnetic. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
2-56 | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 80,000 | MS16995-2, NAS1352C02-4, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 00000 |
4-40 | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-9, NAS1352C04-4, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
3/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 3/32" | 80,000 | MS16995-10, NAS1352C04-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
6-32 | |||||||||||
5/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | NAS1352C06-5, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
7/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 80,000 | NAS1352C06-7, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
8-32 | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | NAS1352C08-4, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-25, NAS1352C08-6, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 80,000 | MS16995-26, NAS1352C08-8, NASM16995, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
10-32 | |||||||||||
1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 80,000 | MS16996-10, NAS1351C3-8, NASM16996, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 80,000 | MS16996-11, NAS1351C3-10, NASM16996, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 80,000 | MS16996-12, NAS1351C3-12, NASM16996, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
7/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 80,000 | MS16996-13, NAS1351C3-14, NASM16996, Fed. Spec. FF-S-86 | 10 | 000000000 | 0000 |
1/4"-20 | |||||||||||
5/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-49, NAS1352C4-10, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-50, NAS1352C4-12, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
7/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 80,000 | MS16995-51, NAS1352C4-14, NASM16995, Fed. Spec. FF-S-86 | 5 | 000000000 | 0000 |
5/16"-18 | |||||||||||
2 1/4" | Partially Threaded | 1 1/8" | Coarse | 15/32" | 5/16" | 1/4" | 80,000 | MS16995-71, NAS1352C5-36, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
5/16"-24 | |||||||||||
1" | Fully Threaded | __ | Fine | 15/32" | 5/16" | 1/4" | 80,000 | MS16996-32, NAS1351C5-16, NASM16996, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
3/8"-16 | |||||||||||
1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-81, NAS1352C6-16, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
2" | Partially Threaded | 1 1/2" | Coarse | 9/16" | 3/8" | 5/16" | 80,000 | MS16995-85, NAS1352C6-32, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
3/8"-24 | |||||||||||
1" | Fully Threaded | __ | Fine | 9/16" | 3/8" | 5/16" | 80,000 | MS16996-40, NAS1351C6-16, NASM16996, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
1 1/2" | Fully Threaded | __ | Fine | 9/16" | 3/8" | 5/16" | 80,000 | MS16996-42, NAS1351C6-24, NASM16996, Fed. Spec. FF-S-86 | 1 | 000000000 | 0000 |
1/2"-13 | |||||||||||
1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 3/8" | 80,000 | MS16995-96, NAS1352C8-24, NASM16995, Fed. Spec. FF-S-86 | 1 | 000000000 | 00000 |
High-Strength A286 Stainless Steel Socket Head Screws
Often used to fasten parts in engines and turbines, these are our strongest stainless steel screws. They are comparable in strength to alloy steel with the corrosion resistance of 18-8 stainless steel. Screws are nonmagnetic. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch.
Screws that meet Fed. Spec. FF-S-86 and ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Yield Strength, psi | Specifications Met | Each | |
A286 Stainless Steel | |||||||||||
3/8"-16 | |||||||||||
3 1/2" | Partially Threaded | 1 1/2" | Coarse | 9/16" | 3/8" | 5/16" | 160,000 | 120,000 | ASME B18.3, NAS1352N6-56, SAE AMS5731, SAE AMS5737 | 000000000 | 000000 |
M5 × 0.8mm | |||||||||||
18mm | Fully Threaded | __ | Coarse | 8.7mm | 5mm | 4 mm | 160,000 | 120,000 | DIN 912, ISO 4762, SAE AMS5731, SAE AMS5737 | 000000000 | 0000 |
Mil. Spec. Stainless Steel Pan Head Phillips Screws
Choose these pan head screws for their adherence to strict military standards for material and construction. Made from 18-8 stainless steel, they are chemical resistant and may be mildly magnetic. Length is measured from under the head.
Passivated screws meet Fed. Spec. QQ-P-35 for added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
Lg. | Threading | Head Dia. | Head Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
1/4"-20 | |||||||||
---|---|---|---|---|---|---|---|---|---|
3/8" | Fully Threaded | 0.492" | 0.175" | No. 3 | 80,000 | Fed. Spec. FF-S-92, Fed. Spec. QQ-P-35, MS51957-77 | 25 | 000000000 | 000000 |
High-Strength Steel Hex Head Screws with Material Certification
These screws come with a traceable lot number and a physical and chemical test report. Made from Grade 8 steel, they can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The zinc yellow-chromate plating resists corrosion in wet environments. Material meets SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||||
1/4"-20 | ||||||||||
1/2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 50 | 000000000 | 00000 |
5/8" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 50 | 000000000 | 00000 |
3/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 50 | 000000000 | 00000 |
1" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 50 | 000000000 | 00000 |
1 1/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 25 | 000000000 | 00000 |
1 1/2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 25 | 000000000 | 00000 |
2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
5/16"-18 | ||||||||||
3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 150,000 | ASME B18.2.1, SAE J429 | 50 | 000000000 | 00000 |
1" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 150,000 | ASME B18.2.1, SAE J429 | 25 | 000000000 | 0000 |
1 1/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
1 1/2" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
3/8"-16 | ||||||||||
3/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 25 | 000000000 | 00000 |
1" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
1 3/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
2" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
2 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
3" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
1/2"-13 | ||||||||||
1" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
1 3/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
2" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
2 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
3" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
3 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
5/8"-11 | ||||||||||
1 1/2" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
2" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
2 1/2" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 25/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
3" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 25/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
3/4"-10 | ||||||||||
1 1/2" | Fully Threaded | __ | Coarse | 1 1/8" | 15/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
2" | Fully Threaded | __ | Coarse | 1 1/8" | 15/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
2 1/2" | Fully Threaded | __ | Coarse | 1 1/8" | 15/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
3" | Partially Threaded | 1 3/4" | Coarse | 1 1/8" | 15/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
These Grade B8 screws are made from 18-8 stainless steel and have good chemical resistance. They may be mildly magnetic. Also known as pressure bolts, these screws meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges. Length is measured from under the head. Screws should be used with ASTM A194 Grade 8 nuts.
Partially threaded screws come with precise threaded and unthreaded portions, allowing you to place only the stronger unthreaded portion (grip) in joints subjected to sideways forces.
For technical drawings and 3-D models, click on a part number.
Screws | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | 18-8 Stainless Steel Hex Nuts | ||||||||||||
Lg. | Threading | Thread Spacing | Thread Lg. | Grip Lg. | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Each | Pkg. Qty. | Pkg. | ||
ASTM Grade B8 18-8 Stainless Steel | |||||||||||||
3/8"-16 | |||||||||||||
7" | Partially Threaded | Coarse | 1 1/4" | 5 3/4" | 9/16" | 15/64" | 75,000 | ASTM A193 | 000000000 | 000000 | 10 | 000000000 | 000000 |
1/2"-13 | |||||||||||||
2 3/4" | Partially Threaded | Coarse | 1 1/4" | 1 1/2" | 7/8" | 5/16" | 75,000 | ASTM A193 | 000000000 | 0000 | 10 | 000000000 | 00000 |
7" | Partially Threaded | Coarse | 1 1/2" | 5 1/2" | 7/8" | 5/16" | 75,000 | ASTM A193 | 000000000 | 00000 | 10 | 000000000 | 00000 |
5/8"-11 | |||||||||||||
2 1/2" | Partially Threaded | Coarse | 1 1/2" | 1" | 1 1/16" | 25/64" | 75,000 | ASTM A193 | 000000000 | 0000 | 5 | 000000000 | 00000 |
3 1/2" | Partially Threaded | Coarse | 1 1/2" | 2" | 1 1/16" | 25/64" | 75,000 | ASTM A193 | 000000000 | 0000 | 5 | 000000000 | 00000 |
8" | Partially Threaded | Coarse | 1 3/4" | 6 1/4" | 1 1/16" | 25/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 5 | 000000000 | 00000 |
3/4"-10 | |||||||||||||
1" | Fully Threaded | Coarse | __ | __ | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
1 1/4" | Fully Threaded | Coarse | __ | __ | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
3 1/2" | Partially Threaded | Coarse | 1 3/4" | 1 3/4" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
3 3/4" | Partially Threaded | Coarse | 1 3/4" | 2" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
4 1/4" | Partially Threaded | Coarse | 1 3/4" | 2 1/2" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
7/8"-9 | |||||||||||||
1 1/4" | Fully Threaded | Coarse | __ | __ | 1 7/16" | 35/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
1 3/4" | Fully Threaded | Coarse | __ | __ | 1 7/16" | 35/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
3 1/4" | Partially Threaded | Coarse | 2" | 1 1/4" | 1 7/16" | 35/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
4 3/4" | Partially Threaded | Coarse | 2" | 2 3/4" | 1 7/16" | 35/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
5" | Partially Threaded | Coarse | 2" | 3" | 1 7/16" | 35/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
Super-Corrosion-Resistant 316 Stainless Steel Heavy
Hex Head Screws for High-Pressure Applications
Made from 316 stainless steel, these Grade B8M screws are more corrosion resistant than 18-8 stainless steel screws and have excellent resistance to chemicals and salt water. They may be mildly magnetic. Also known as pressure bolts, these screws meet the high-pressure and high-temperature regulations of ASTM A193 and are used to secure pressure tanks, valves, and flanges. Length is measured from under the head. Screws should be used with Grade 8M nuts.
Partially threaded screws come with precise threaded and unthreaded portions, allowing you to place only the stronger unthreaded portion (grip) in joints subjected to sideways forces.
For technical drawings and 3-D models, click on a part number.
Screws | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | 316 Stainless Steel Hex Nuts | ||||||||||||
Lg. | Threading | Thread Spacing | Thread Lg. | Grip Lg. | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Each | Pkg. Qty. | Pkg. | ||
ASTM Grade B8M 316 Stainless Steel | |||||||||||||
3/8"-16 | |||||||||||||
4" | Partially Threaded | Coarse | 1" | 3" | 9/16" | 15/64" | 75,000 | ASTM A193 | 000000000 | 000000 | 5 | 000000000 | 00000 |
1/2"-13 | |||||||||||||
1 1/2" | Partially Threaded | Coarse | 1 1/4" | 1/4" | 7/8" | 5/16" | 75,000 | ASTM A193 | 000000000 | 0000 | 5 | 000000000 | 0000 |
1 3/4" | Partially Threaded | Coarse | 1 1/4" | 1/2" | 7/8" | 5/16" | 75,000 | ASTM A193 | 000000000 | 0000 | 5 | 000000000 | 0000 |
2 3/4" | Partially Threaded | Coarse | 1 1/4" | 1 1/2" | 7/8" | 5/16" | 75,000 | ASTM A193 | 000000000 | 0000 | 5 | 000000000 | 0000 |
8" | Partially Threaded | Coarse | 1 1/2" | 6 1/2" | 7/8" | 5/16" | 75,000 | ASTM A193 | 000000000 | 00000 | 5 | 000000000 | 0000 |
5/8"-11 | |||||||||||||
1 3/4" | Partially Threaded | Coarse | 1 1/2" | 1/4" | 1 1/16" | 25/64" | 75,000 | ASTM A193 | 000000000 | 0000 | 1 | 000000000 | 0000 |
3" | Partially Threaded | Coarse | 1 1/2" | 1 1/2" | 1 1/16" | 25/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
3 3/4" | Partially Threaded | Coarse | 1 1/2" | 2 1/4" | 1 1/16" | 25/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
3/4"-10 | |||||||||||||
2" | Fully Threaded | Coarse | __ | __ | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
4 1/2" | Partially Threaded | Coarse | 1 3/4" | 2 3/4" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
4 3/4" | Partially Threaded | Coarse | 1 3/4" | 3" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
5" | Partially Threaded | Coarse | 1 3/4" | 3 1/4" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
5 3/4" | Partially Threaded | Coarse | 1 3/4" | 4" | 1 1/4" | 15/32" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
7/8"-9 | |||||||||||||
4 1/2" | Partially Threaded | Coarse | 2" | 2 1/2" | 1 7/16" | 35/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
1"-8 | |||||||||||||
5" | Partially Threaded | Coarse | 2 1/4" | 2 3/4" | 1 5/8" | 39/64" | 75,000 | ASTM A193 | 000000000 | 00000 | 1 | 000000000 | 0000 |
Alloy Steel Shoulder Screws with Material Certification
These shoulder screws come with a traceable lot number and material test report. Comparable to Grade 8 steel, they are the strongest shoulder screws we offer. They have a standard shoulder with an undersized tolerance to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point.
For technical drawings and 3-D models, click on a part number.
Each | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Finish | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
1/4" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | |||||||||||
1/4" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 00000 | 00000 |
3/8" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1/2" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
5/8" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/4" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/4" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/2" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
2" | 10-24 | 3/8" | 3/8" | 3/16" | Black Oxide | 140,000 | 1/8" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
5/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | |||||||||||
1/4" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/8" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1/2" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
5/8" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/4" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/4" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/2" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
2" | 1/4"-20 | 7/16" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/8" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | |||||||||||
1/4" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/8" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1/2" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
5/8" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/4" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/4" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/2" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
2" | 5/16"-18 | 1/2" | 9/16" | 1/4" | Black Oxide | 140,000 | 3/16" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1/2" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | |||||||||||
1/4" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/8" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1/2" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
5/8" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
3/4" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/4" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
1 1/2" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
2" | 3/8"-16 | 5/8" | 3/4" | 5/16" | Black Oxide | 140,000 | 1/4" | ASME B18.3, ASTM A574 | 000000000 | 0000 | 0000 |
18-8 Stainless Steel Precision Shoulder Screws with Material Certification
These shoulder screws come with a traceable lot number and material test report. Made of 18-8 stainless steel, they have good corrosion resistance and may be mildly magnetic. All are passivated for added protection against oxidation and corrosion. With a shoulder diameter that is twice as precise as our general purpose shoulder screws, these screws provide smooth, accurate movement. Use them where precision matters, such as in measuring devices, optical fixtures, and laboratory equipment.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
1/8" Shoulder Dia.—Precise Fit (-0.001" to 0" Dia. Tolerance) | ||||||||||
1/8" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | MS51576-1, NASM51576 | 000000000 | 00000 | 00000 |
3/16" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | MS51576-2, NASM51576 | 000000000 | 0000 | 0000 |
1/4" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | MS51576-3, NASM51576 | 000000000 | 0000 | 0000 |
5/16" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | MS51576-4, NASM51576 | 000000000 | 0000 | 0000 |
3/8" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | MS51576-5, NASM51576 | 000000000 | 0000 | 0000 |
3/16" Shoulder Dia.—Precise Fit (-0.001" to 0" Dia. Tolerance) | ||||||||||
1/8" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-6, NASM51576 | 000000000 | 0000 | 0000 |
3/16" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-7, NASM51576 | 000000000 | 0000 | 0000 |
1/4" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-8, NASM51576 | 000000000 | 0000 | 0000 |
5/16" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-9, NASM51576 | 000000000 | 0000 | 0000 |
3/8" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-10, NASM51576 | 000000000 | 0000 | 0000 |
1/2" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-11, NASM51576 | 000000000 | 0000 | 0000 |
5/8" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-12, NASM51576 | 000000000 | 0000 | 0000 |
3/4" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-13, NASM51576 | 000000000 | 0000 | 0000 |
1" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-14, NASM51576 | 000000000 | 0000 | 0000 |
1 1/4" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | MS51576-15, NASM51576 | 000000000 | 0000 | 0000 |
1/4" Shoulder Dia.—Precise Fit (-0.001" to 0" Dia. Tolerance) | ||||||||||
3/16" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-16, NASM51576 | 000000000 | 0000 | 0000 |
1/4" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-17, NASM51576 | 000000000 | 0000 | 0000 |
5/16" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-18, NASM51576 | 000000000 | 0000 | 0000 |
3/8" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-19, NASM51576 | 000000000 | 0000 | 0000 |
1/2" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-20, NASM51576 | 000000000 | 0000 | 0000 |
5/8" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-21, NASM51576 | 000000000 | 0000 | 0000 |
3/4" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-22, NASM51576 | 000000000 | 0000 | 0000 |
1" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-23, NASM51576 | 000000000 | 0000 | 0000 |
1 1/4" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-24, NASM51576 | 000000000 | 0000 | 0000 |
1 1/2" | 10-32 | 1/4" | 3/8" | 3/16" | 70,000 | 1/8" | MS51576-25, NASM51576 | 000000000 | 0000 | 0000 |
5/16" Shoulder Dia.—Precise Fit (-0.001" to 0" Dia. Tolerance) | ||||||||||
1/2" | 1/4"-20 | 7/16" | 1/2" | 7/32" | 70,000 | 5/32" | MS51576-26, NASM51576 | 000000000 | 0000 | 0000 |
5/8" | 1/4"-20 | 7/16" | 1/2" | 7/32" | 70,000 | 5/32" | MS51576-27, NASM51576 | 000000000 | 0000 | 0000 |
3/4" | 1/4"-20 | 7/16" | 1/2" | 7/32" | 70,000 | 5/32" | MS51576-28, NASM51576 | 000000000 | 0000 | 0000 |
3/8" Shoulder Dia.—Precise Fit (-0.001" to 0" Dia. Tolerance) | ||||||||||
5/8" | 5/16"-18 | 1/2" | 9/16" | 1/4" | 70,000 | 3/16" | MS51576-32, NASM51576 | 000000000 | 0000 | 0000 |
1/2" Shoulder Dia.—Precise Fit (-0.001" to 0" Dia. Tolerance) | ||||||||||
5/8" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 70,000 | 1/4" | MS51576-37, NASM51576 | 000000000 | 00000 | 0000 |
3/4" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 70,000 | 1/4" | MS51576-38, NASM51576 | 000000000 | 00000 | 0000 |
1" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 70,000 | 1/4" | MS51576-39, NASM51576 | 000000000 | 00000 | 00000 |