Selecting Compatible Lead Screws and Nuts
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About Copper, Brass, and Bronze
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About Ball and Roller Bearings
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Set Screw Collar Ball Bearings
Slip these bearings onto a shaft and secure with the included set screws, no special tools required. All have an extended inner ring for additional shaft support.
Bearings with a black-oxide steel ring have some corrosion resistance.
Sealed bearings block out dust and other contaminants better than shielded bearings.
Bearings with a retaining ring have a removable retaining ring that holds the bearing inside a housing.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bearing Trade Number  | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | ABEC Rating | Each | |
Sealed (Lubricated) | ||||||||||||||
Black-Oxide Steel—With Retaining Ring | ||||||||||||||
| ER36 | 2 1/4" | 4.331" | 1 1/4" | 2.9844" | 2.5625" | 4 37/64" | 0.09375" | 11,750 | 8,150 | 3,000 | -20° to 220° | ABEC-1 | 0000000 | 0000000 |
| ER38 | 2 3/8" | 4.331" | 1 1/4" | 2.9844" | 2.5625" | 4 37/64" | 0.09375" | 11,750 | 8,150 | 3,000 | -20° to 220° | ABEC-1 | 0000000 | 000000 |
| ER39 | 2 7/16" | 4.331" | 1 1/4" | 2.9844" | 2.5625" | 4 37/64" | 0.09375" | 11,750 | 8,150 | 3,000 | -20° to 220° | ABEC-1 | 0000000 | 000000 |
Needle-Roller Bearings
Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.
Open bearings dissipate heat more efficiently than sealed bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Specifications Met | Each | |
Open | ||||||||||||
| 1 1/2" | 1 7/8" | 1 1/4" | Steel | 10,600 | 19,300 | 6,700 | Required | 8 | -20° to 280° | DIN 281, ISO 76 | 0000000 | 000000 |
| 1 5/8" | 2" | 1 1/4" | Steel | 11,400 | 21,800 | 6,000 | Required | 8 | -20° to 280° | DIN 281, ISO 76 | 00000000 | 00000 |
Precision Needle-Roller Bearings
Install these bearings directly onto hardened and ground shafts. They have higher load capacity, speed, and accuracy than standard needle-roller bearings.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants.
Shaft liners allow you to use the bearing on unhardened and unground shafts.
For technical drawings and 3-D models, click on a part number.
Bearings | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Radial Load Cap., lbs. | Optional Shaft Liners | |||||||||||||
| For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range., °F | Each | For Shaft Dia. | Each | ||
Open | ||||||||||||||
| 2" | 2 9/16" | 1 1/4" | Steel | 13,300 | 29,900 | 6,700 | Required | 16 | 0° to 245° | 00000000 | 000000 | __ | 000000 | 00 |
Sealed | ||||||||||||||
| 1 1/8" | 1 5/8" | 1 1/4" | Steel | 8,700 | 12,200 | 3,400 | Lubricated | 12 | -30° to 250° | 0000000 | 00000 | 7/8" | 0000000 | 000000 |
| 1 1/4" | 1 3/4" | 1 1/4" | Steel | 9,000 | 13,100 | 3,000 | Lubricated | 12 | -30° to 250° | 0000000 | 00000 | 1" | 0000000 | 00000 |
| 1 1/2" | 2 1/16" | 1 1/4" | Steel | 10,300 | 15,500 | 2,500 | Lubricated | 12 | -30° to 250° | 0000000 | 00000 | 1 1/4" | 0000000 | 00000 |
| 1 3/4" | 2 5/16" | 1 1/4" | Steel | 9,900 | 19,700 | 2,200 | Required | 16 | -30° to 250° | 00000000 | 00000 | 1 1/2" | 00000000 | 00000 |
Oversized Weldable 954 Bearing Bronze Bars
- Yield Strength: 29,000 psi
- Hardness: Rockwell B85 (Medium)
- Temper: M07
- Heat Treatable: Yes
- Specifications Met: ASTM B505
Thickness and width are oversized to allow for finishing. 954 bronze contains a minimum of 10% aluminum for strength and weldability. It is also known as aluminum bronze. It's widely used for bearings, bushings, valve bodies, and worm gears.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
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. 360 brass components have excellent machinability and good corrosion resistance. 18-8 stainless steel components have good 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.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 7/8"-6 | 2 1/2" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | 000000000 | 000000 |
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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
Zinc-Plated Carbon Steel | ||||||||||
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
360 Brass | ||||||||||
| 3/4"-5 | 3/4" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||||
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Not Rated | __ | 000000000 | 00000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Specifications Met | Each | |
Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
Zinc-Plated Carbon Steel | |||||||||||
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
360 Brass | |||||||||||
| 3/4"-5 | 3/4" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
| 3/4"-6 | 3/4" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 00000 |
18-8 Stainless Steel | |||||||||||
| 3/4"-5 | 47/64" | 1 1/4" | 1 | 1:1 | 0.2" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 3/4"-6 | 47/64" | 1 1/4" | 1 | 1:1 | 0.167" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
| 3/4"-8 | 47/64" | 1 1/4" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B97 | __ | 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.
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.
Tapered Shims
Ridges keep these shims from sliding apart when stacked. Use them to align cabinets, doors, and windows, or for other rough leveling.
Shims are made of plastic to resist moisture and prevent rot. Polypropylene shims are rigid. PVC shims are flexible.
For technical drawings and 3-D models, click on a part number.
Shims for Hinges
Slide these shims behind your door’s hinge to align it in the jamb. To select the correct shim, measure your door hinge leaf height. Shims have a universal hole pattern and can be cut with a knife. Shims are made of plastic to resist moisture and prevent rot.
For technical drawings and 3-D models, click on a part number.
| For Hinge Leaf Ht. | Wd. | Thick. | Thick. Tolerance | Color | Material | Temperature Range, °F | Pkg. Qty. | Pkg. | |
| 4" | 1 1/4" | 0.027" | -0.023" to 0.023" | Gray | ABS Plastic | -30° to 170° | 15 | 0000000 | 00000 |