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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, and size 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.
| Thread Size  | OD | Wd. | No. of Thread Starts | Hardness | Each | |
Right-Hand Threaded | ||||||
|---|---|---|---|---|---|---|
Black-Oxide 1215 Carbon Steel | ||||||
| 1/4"-16 | 5/8" | 9/32" | 1 | Brinell 167 | 0000000 | 00000 |
| 3/8"-16 | 7/8" | 11/32" | 1 | Brinell 167 | 0000000 | 0000 |
| 5/8"-10 | 1 5/16" | 7/16" | 1 | Brinell 167 | 0000000 | 00000 |
| 3/4"-10 | 1 1/2" | 1/2" | 1 | Brinell 167 | 0000000 | 00000 |
| 1"-4 | 1 3/4" | 1/2" | 1 | Brinell 167 | 0000000 | 00000 |
| 1"-10 | 1 3/4" | 1/2" | 1 | Brinell 167 | 0000000 | 00000 |
Black-Oxide 12L14 Carbon Steel | ||||||
| 3/8"-12 | 1 1/8" | 1/2" | 1 | Brinell 163 | 0000000 | 00000 |
| 7/16"-12 | 1 1/8" | 1/2" | 1 | Brinell 163 | 0000000 | 00000 |
| 1/2"-10 | 1 5/16" | 1/2" | 1 | Brinell 163 | 0000000 | 00000 |
| 5/8"-8 | 1 5/8" | 1/2" | 1 | Brinell 163 | 0000000 | 00000 |
| 3/4"-6 | 2" | 5/8" | 1 | Brinell 163 | 0000000 | 00000 |
| 7/8"-6 | 2 1/8" | 5/8" | 1 | Brinell 163 | 0000000 | 00000 |
| 1"-5 | 2 1/4" | 5/8" | 1 | Brinell 163 | 0000000 | 00000 |
| 1 1/8"-5 | 2 3/8" | 3/4" | 1 | Brinell 163 | 0000000 | 00000 |
| 1 1/4"-5 | 2 1/2" | 3/4" | 1 | Brinell 163 | 0000000 | 00000 |
| 1 1/2"-4 | 2 3/4" | 3/4" | 1 | Brinell 163 | 0000000 | 00000 |
| 2"-4 | 3 1/2" | 1" | 1 | Brinell 163 | 0000000 | 00000 |
| 2 1/2"-3 | 4" | 1" | 1 | Brinell 163 | 0000000 | 000000 |
303 Stainless Steel | ||||||
| 1/4"-16 | 5/8" | 9/32" | 1 | Brinell 228 | 0000000 | 00000 |
| 3/8"-12 | 7/8" | 11/32" | 1 | Brinell 228 | 0000000 | 00000 |
| 3/8"-16 | 7/8" | 11/32" | 1 | Brinell 228 | 0000000 | 00000 |
| 1/2"-10 | 1 1/8" | 7/16" | 1 | Brinell 228 | 0000000 | 00000 |
| 5/8"-8 | 1 5/16" | 7/16" | 1 | Brinell 228 | 0000000 | 00000 |
| 5/8"-10 | 1 5/16" | 7/16" | 1 | Brinell 228 | 0000000 | 00000 |
| 3/4"-6 | 1 1/2" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
| 3/4"-10 | 1 1/2" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
| 1"-4 | 1 3/4" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
| 1"-5 | 1 3/4" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
| 1"-10 | 1 3/4" | 1/2" | 1 | Brinell 228 | 0000000 | 00000 |
Left-Hand Threaded | ||||||
Black-Oxide 12L14 Carbon Steel | ||||||
| 1/2"-10 | 1 5/16" | 1/2" | 1 | Brinell 163 | 0000000 | 00000 |
| 3/4"-6 | 2" | 5/8" | 1 | Brinell 163 | 0000000 | 00000 |
| 1"-5 | 2 1/4" | 5/8" | 1 | Brinell 163 | 0000000 | 00000 |