Selecting Compatible Lead Screws and Nuts
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Acme Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
Carbon steel components are easier to machine than alloy steel components. Zinc-plated carbon steel components have mild corrosion resistance. Alloy steel components are harder and stronger than carbon steel components. Cast iron components have good machinability and high strength. 360 brass components have excellent machinability and good corrosion resistance. 932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair corrosion resistance. 18-8 stainless steel components have good corrosion resistance. 316 stainless steel components have excellent corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size  | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Specifications Met | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 12" | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 00000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B61 | 53,000 | ASTM A108 | 000000000 | 00000 |
| 3/8"-12 | 12 ft. | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 000000000 | 00000 |
Alloy Steel | |||||||||||
| 3/8"-12 | 6" | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 12" | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 2 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
| 3/8"-12 | 12 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
18-8 Stainless Steel | |||||||||||
| 3/8"-12 | 12" | 1 | 1:1 | 0.083" | Class 2G | __ | Rockwell B96 | Not Rated | __ | 000000000 | 00000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | Class 2G | __ | Rockwell B96 | Not Rated | __ | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | Class 2G | __ | Rockwell B96 | Not Rated | __ | 000000000 | 000000 |
| 3/8"-12 | 12 ft. | 1 | 1:1 | 0.083" | Class 2G | __ | Rockwell B96 | Not Rated | __ | 000000000 | 000000 |
316 Stainless Steel | |||||||||||
| 3/8"-12 | 12" | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 000000000 | 000000 |
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Specifications Met | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B61 | 53,000 | ASTM A108 | 000000000 | 000000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | Class 2G | Grade 2 | Rockwell B61 | 53,000 | ASTM A108 | 000000000 | 00000 |
Alloy Steel | |||||||||||
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 000000000 | 000000 |
Hex head screws fasten heavy loads. They’re generally shorter than lead screws and can be tightened with a wrench. Length is measured from under the head.
Head | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Lg. | Wd. | Ht. | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Each | |
Carbon Steel | |||||||||||||
| 3/8"-12 | 3" | 1 | 1:1 | 0.083" | 2 1/2" to 3" | 9/16" | 15/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 000000 |
| 3/8"-12 | 4" | 1 | 1:1 | 0.083" | 3 1/2" to 4" | 9/16" | 15/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
| 3/8"-12 | 6" | 1 | 1:1 | 0.083" | 5 1/2" to 6" | 9/16" | 15/64" | Class 2G | Grade 5 | Rockwell C19 | 105,000 | 000000000 | 00000 |
Coupling nuts connect two lead screws.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Carbon Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 1 7/8" | 1/2" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | 000000000 | 000000 |
Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.
Flange | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Ht. | Dia. | Dia. | Thick. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
932 Bearing Bronze | |||||||||||
| 3/8"-12 | 7/8" | 1/2" | 1" | 1/8" | 1 | 1:1 | 0.083" | Class 2G | Not Rated | 000000000 | 0000000 |
Round nuts move objects along the length of a lead screw.
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
Zinc-Plated Carbon Steel | ||||||||||
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
360 Brass | ||||||||||
| 3/8"-12 | 3/8" | 3/4" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||||
| 3/8"-12 | 23/64" | 11/16" | 1 | 1:1 | 0.083" | Class 2G | Not Rated | __ | 000000000 | 00000 |
Hex nuts fasten and position lead screw components.
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
360 Brass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3/8" | 3/4" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B55 | ASTM B16 | 000000000 | 00000 |
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
360 Brass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3/8" | 3/4" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B55 | ASTM B16 | 000000000 | 00000 |
Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Cast Iron | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 1 1/8" | 9 1/2" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B72 | 000000000 | 000000 |
Handles fasten and position lead screw components. Handles are easy to grip and tighten by hand for quick assembly and disassembly.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Cast Iron | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 1 3/4" | 4 1/4" | 1 | 1:1 | 0.083" | Class 2G | Rockwell B67 | 000000000 | 000000 |
Precision Acme Lead Screws and Nuts
Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won’t unexpectedly move when the lead screw is at rest. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
Carbon steel lead screws and flanges have good machinability. Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance and a dark surface color. 303 and 304 stainless steel lead screws and flanges have good corrosion resistance.
932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance. Cast iron nuts have good machinability and high strength. PET plastic nuts are lightweight and corrosion resistant.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
1018 Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 18" | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Not Rated | Not Rated | 000000000 | 000000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Not Rated | Not Rated | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Not Rated | Not Rated | 000000000 | 00000 |
Black-Oxide 4140 Alloy Steel | ||||||||||
| 3/8"-12 | 18" | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 00000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 000000 |
304 Stainless Steel | ||||||||||
| 3/8"-12 | 18" | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Not Rated | Not Rated | 000000000 | 00000 |
| 3/8"-12 | 3 ft. | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 150 | 72,000 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 150 | 72,000 | 000000000 | 000000 |
| Thread Size | Lg. | Lg., ft. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
Black-Oxide 4140 Alloy Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3 ft. | 3 | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 000000 |
| 3/8"-12 | 6 ft. | 6 | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 271 | 125,000 | 000000000 | 00000 |
304 Stainless Steel | |||||||||||
| 3/8"-12 | 3 ft. | 3 | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 150 | 72,000 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 6 | 1 | 1:1 | 0.083" | ±0.009" per ft. | Class 2C | Brinell 150 | 72,000 | 000000000 | 00000 |
Right-hand-and-left-hand threaded lead screws have right-hand threads on one end and left-hand threads on the other. Use them where you want to drive nuts in opposite directions at the same time, such as for widening and narrowing chutes on packing and assembly lines. Note: A short length of threading at the center of the lead screw is not usable.
Usable Thread Lg. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Lg., ft. | Right Hand | Left Hand | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
Black-Oxide 4140 Alloy Steel | |||||||||||||
| 3/8"-12 | 3 ft. | 3 | 17" | 17" | 1 | 1:1 | 0.083" | ±0.0003" per in. | Class 2C | Brinell 200 | 95,000 | 000000000 | 0000000 |
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
Cast Iron | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Brinell 217 | Not Rated | __ | 000000000 | 000000 |
932 Bearing Bronze | |||||||||||
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Brinell 65 | 700 | __ | 00000000 | 00000 |
PET Plastic | |||||||||||
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
Cast Iron | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Brinell 217 | Not Rated | __ | 000000000 | 000000 |
932 Bearing Bronze | |||||||||||
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Brinell 65 | 700 | __ | 00000000 | 00000 |
PET Plastic | |||||||||||
| 3/8"-12 | 3/4" | 1.344" | 1 | 1:1 | 0.083" | Class 2C | Not Rated | 350 | 15° to 175° | 00000000 | 00000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Temperature Range, °F | Each | |
673 Bronze | |||||||||||||
| 3/8"-12 | 5/8" | 0.688" | 1 | 1:1 | 0.083" | 9/16"-18 | 3/8" | Class 2C | Brinell 70 | Not Rated | __ | 000000000 | 000000 |
PET Plastic | |||||||||||||
| 3/8"-12 | 5/8" | 0.688" | 1 | 1:1 | 0.083" | 9/16"-18 | 3/8" | Class 2C | Not Rated | 350 | 15° to 175° | 000000000 | 00000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
673 Bronze | ||||||||||||
| 3/8"-12 | 5/8" | 0.688" | 1 | 1:1 | 0.083" | 9/16"-18 | 3/8" | Class 2C | Brinell 70 | Not Rated | 000000000 | 000000 |
Thread onto an externally threaded acme nut to create a custom flange nut.
Carbon steel flanges have good machinability. However, they will rust when exposed to moisture. Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color. 303 stainless steel flanges have good corrosion resistance.
Fast-Travel Precision Acme Lead Screws and Nuts
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. The threads have a tight thread fit for accurate, repeatable starts and stops. Pair with a motor in automated motion and positioning applications. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
Carbon steel lead screws and flanges have good machinability. 303 and 304 stainless steel lead screws and flanges have good corrosion resistance.
932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
1018 Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 18" | 2 | 2:1 | 0.167" | ±0.009" per ft. | Class 2C | Not Rated | Not Rated | 000000000 | 000000 |
| 3/8"-12 | 3 ft. | 2 | 2:1 | 0.167" | ±0.009" per ft. | Class 2C | Brinell 126 | 64,000 | 000000000 | 00000 |
| 3/8"-12 | 6 ft. | 2 | 2:1 | 0.167" | ±0.009" per ft. | Class 2C | Brinell 126 | 64,000 | 000000000 | 00000 |
| Thread Size | Lg., ft. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Thread Fit | Hardness | Tensile Strength, psi | Each | |
1018 Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 3 | 2 | 2:1 | 0.167" | ±0.009" per ft. | Class 2C | Brinell 126 | 64,000 | 000000000 | 000000 |
| 3/8"-12 | 6 | 2 | 2:1 | 0.167" | ±0.009" per ft. | Class 2C | Brinell 126 | 64,000 | 000000000 | 00000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
673 Bronze | ||||||||||||
| 3/8"-12 | 5/8" | 0.688" | 2 | 2:1 | 0.167" | 9/16"-18 | 3/8" | Class 2C | Brinell 70 | Not Rated | 000000000 | 000000 |
Combine externally threaded nuts with a flange to create a custom flange nut.
External Thread | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Size | Lg. | Thread Fit | Hardness | Dynamic Thrust Load Cap., lbs. | Each | |
673 Bronze | ||||||||||||
| 3/8"-12 | 5/8" | 0.688" | 2 | 2:1 | 0.167" | 9/16"-18 | 3/8" | Class 2C | Brinell 70 | Not Rated | 000000000 | 000000 |
Thread onto an externally threaded acme nut to create a custom flange nut.
Carbon steel flanges have good machinability. However, they will rust when exposed to moisture. Black-oxide carbon steel flanges have mild corrosion resistance in dry environments and a dark surface color. 303 stainless steel flanges have good corrosion resistance.
Fast-Travel Ultra-Precision Lead Screws and Nuts
Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start. Operating with less backlash (play) than Precision Acme Lead Screws and Nuts, these lead screws and nuts provide increased nut life and more reliable movement in automated systems. All components are corrosion resistant for use in harsh environments. To ensure compatibility, select components that have the same thread type, thread size, and number of thread starts.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Lg. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn | Accuracy for Travel Distance per Turn | Hardness | Tensile Strength, psi | Each | |
303 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/8"-12 | 6ft. | 3 | Rounded Acme | 3:1 | 0.25" | ±0.0006" per in. | Brinell 160 | 90,000 | 00000000 | 0000000 |
Flange nuts with wear-compensating internal O-ring or wear-compensating spring maintain a tight fit even when their threads begin to wear. They resist backlash to maintain accuracy over time, which is important in applications such as 3D printing and robotics.
Flange | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Dia. | Dia. | Thick. | No. of Thread Starts | Thread Type | Speed Ratio | Travel Distance per Turn | Bolt Circle Dia. | Tensile Strength, psi | Dynamic Thrust Load Cap., lbs. | Each | ||
Acetal Plastic | ||||||||||||||
| B | 3/8"-12 | 1" | 0.625" | 1 7/64" | 3/16" | 3 | Rounded Acme | 3:1 | 0.25" | 7/8" | 9,700 | 75 | 00000000 | 000000 |
Acetal Plastic with Wear-Compensating Spring | ||||||||||||||
| C | 3/8"-12 | 1 29/32" | 0.703" | 1 1/2" | 3/16" | 3 | Rounded Acme | 3:1 | 0.25" | 1 1/8" | 9,700 | 10 | 00000000 | 00000 |
Clamping Acme Lead Screw Collars
Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance. 303 stainless steel collars have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Two-Piece Clamping Acme Lead Screw Collars
Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or as an end stop to limit travel. Tighten the clamping screw to secure.
To ensure compatibility, please select a collar that has the same thread type, direction, size, and number of thread starts as your lead screw.
Black-oxide carbon steel collars have mild corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Thread Size | OD | Wd. | No. of Thread Starts | Hardness | Each | |
Right-Hand Threaded | ||||||
|---|---|---|---|---|---|---|
Black-Oxide 12L14 Carbon Steel | ||||||
| 3/8"-12 | 1 1/8" | 1/2" | 1 | Brinell 163 | 0000000 | 000000 |