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Acme Screw Jacks
Broad, strong Acme threads make these screw jacks better than ball screw jacks for heavy loads, intermittent positioning applications, and where vibration is present. Screw jacks come assembled, threaded, and ready for hookup. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads.
Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.
For technical drawings and 3-D models, click on a part number.
Upright
Inverted
Top View
Keyway | Body | Tube | Attachment Thread | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel Lg. | Lifting Screw Thread Size  | Travel Distance per Turn | Shaft Dia. | Lg. | Wd. | Dp. | Lg. | Wd. | Dp. | Lg. | Dia. | Bearing Thick. | Lg. | Size | Input Starting Torque | Each | |
Upright | |||||||||||||||||
250-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 3" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 3 7/16" | 27/32" | __ | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 0000000 |
| 6" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 6 7/16" | 27/32" | __ | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 9 7/16" | 27/32" | __ | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 12 7/16" | 27/32" | __ | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
500-lbs. Capacity—304 Stainless Steel Lifting Screw | |||||||||||||||||
| 3" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 3 7/16" | 27/32" | __ | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 6 7/16" | 27/32" | __ | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 9 7/16" | 27/32" | __ | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 12 7/16" | 27/32" | __ | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
1,000-lbs. Capacity—304 Stainless Steel Lifting Screw | |||||||||||||||||
| 3" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 3 3/8" | 7/8" | __ | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 6 3/8" | 7/8" | __ | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 9 3/8" | 7/8" | __ | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 12 3/8" | 7/8" | __ | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
2,000-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 4" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 3 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 5" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 4 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 6" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 5 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 8" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 7 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 10" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 9 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 12" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 11 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 14" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 13 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 16" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 15 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 18" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 17 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 20" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 19 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 24" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 23 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 30" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 29 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 36" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 35 7/8" | 1 5/16" | __ | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
4,000-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 4" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 3 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 6" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 5 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 8" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 7 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 10" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 9 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 12" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 11 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 14" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 13 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 16" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 15 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 18" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 17 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 20" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 19 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 24" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 23 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 30" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 29 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 36" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 4 1/8" | 7" | 5" | 35 3/4" | 1 21/32" | __ | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
10,000-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 4" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 3 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 000000 |
| 5" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 4 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 8" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 7 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 10" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 9 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 12" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 11 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 14" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 13 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 16" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 15 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 18" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 17 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 20" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 19 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 24" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 23 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 30" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 29 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 36" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 35 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 72" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5 1/2" | 6" | 8" | 71 3/4" | 2 3/8" | __ | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
Inverted | |||||||||||||||||
250-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 3" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 3 7/16" | 27/32" | 1/4" | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 6 7/16" | 27/32" | 1/4" | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 9 7/16" | 27/32" | 1/4" | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 1/2"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 12 7/16" | 27/32" | 1/4" | 1 5/8" | 1/2"-20 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
500-lbs. Capacity—304 Stainless Steel Lifting Screw | |||||||||||||||||
| 3" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 3 7/16" | 27/32" | 1/4" | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 6 7/16" | 27/32" | 1/4" | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 9 7/16" | 27/32" | 1/4" | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 12 7/16" | 27/32" | 1/4" | 1 1/2" | 1/2"-20 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
1,000-lbs. Capacity—304 Stainless Steel Lifting Screw | |||||||||||||||||
| 3" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 3 3/8" | 7/8" | 1/4" | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 6 3/8" | 7/8" | 1/4" | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 9 3/8" | 7/8" | 1/4" | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 12 3/8" | 7/8" | 1/4" | 1" | 3/8"-24 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
2,000-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 4" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 3 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 6" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 5 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 8" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 7 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 10" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 9 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 12" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 11 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 14" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 13 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 16" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 15 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 18" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 17 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 20" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 19 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 24" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 23 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 30" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 29 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 36" | 3/4"-5 | 0.04" | 1/2" | 1" | 1/8" | 1/16" | 3 5/16" | 5" | 3 31/32" | 35 7/8" | 1 5/16" | 1/4" | 3/4" | 1/2"-13 | 76 in.-lbs. @ 500 rpm | 000000000 | 000000 |
4,000-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 4" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 3 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 6" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 5 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 8" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 7 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 10" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 9 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 12" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 11 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 14" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 13 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 16" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 15 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 18" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 17 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 20" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 19 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 24" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 23 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 30" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 29 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
| 36" | 1"-4 | 0.042" | 1/2" | 1 3/16" | 1/8" | 1/16" | 3 3/4" | 7" | 5" | 35 3/4" | 1 21/32" | 5/16" | 1 1/16" | 5/8"-18 | 164 in.-lbs. @ 500 rpm | 000000000 | 000000 |
10,000-lbs. Capacity—Carbon Steel Lifting Screw | |||||||||||||||||
| 4" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 3 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 000000 |
| 6" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 5 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 8" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 7 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 10" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 9 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 12" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 11 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 14" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 13 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 16" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 15 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 18" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 17 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 20" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 19 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 24" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 23 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 30" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 29 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
| 36" | 1 1/2"-2 2/3 | 0.063" | 3/4" | 1 7/16" | 3/16" | 3/32" | 5" | 6" | 8" | 35 3/4" | 2 3/8" | 1/2" | 1 1/2" | 1"-14 | 650 in.-lbs. @ 300 rpm | 000000000 | 00000000 |
Mounting Plates
Add a flat mounting surface to a screw jack to support loads. Plates rotate in unison with the lifting screw.
Eyelet End Fittings
Attach these fittings to the end of a screw jack to create pivoting connections with clevis rod ends and other linkages. Fittings rotate in unison with the lifting screw.
Acme Screw Jacks with Mounting Plate
Upright
Inverted
Top View
The mounting plate provides a flat surface for supporting loads. Broad, strong Acme lead screw threads make these screw jacks good for heavy loads, intermittent positioning applications, and where vibration is present. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads. Screw jacks come assembled, threaded, and ready for hookup.
Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.
For technical drawings and 3-D models, click on a part number.
Keyway | Body | Tube | Mounting Plate Mounting Holes | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel Lg. | Lifting Screw Thread Size | Travel Distance per Turn | Shaft Dia. | Lg. | Wd. | Dp. | Lg. | Wd. | Dp. | Lg. | Dia. | Bearing Thick. | Ctr.-to-Ctr. | Dia. | No. of | Input Starting Torque | Each | |
Upright | ||||||||||||||||||
250-lbs. Capacity—Carbon Steel Lifting Screw | ||||||||||||||||||
| 3" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 3 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 0000000 |
| 6" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 6 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 9 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 12 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
500-lbs. Capacity—304 Stainless Steel Lifting Screw | ||||||||||||||||||
| 3" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 3 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 6 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 9 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 12 7/16" | 27/32" | __ | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
1,000-lbs. Capacity—304 Stainless Steel Lifting Screw | ||||||||||||||||||
| 3" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 3 3/8" | 7/8" | __ | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 6 3/8" | 7/8" | __ | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 9 3/8" | 7/8" | __ | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 3/8" | 4" | 2 27/32" | 12 3/8" | 7/8" | __ | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
Inverted | ||||||||||||||||||
250-lbs. Capacity—Carbon Steel Lifting Screw | ||||||||||||||||||
| 3" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 3 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 6 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 9 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 12 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 7 in.-lbs. @ 500 rpm | 0000000 | 000000 |
500-lbs. Capacity—304 Stainless Steel Lifting Screw | ||||||||||||||||||
| 3" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 3 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 6 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 9 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-4 | 0.05" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 12 7/16" | 27/32" | 1/4" | 1 1/2" | 9/32" | 4 | 21 in.-lbs. @ 500 rpm | 0000000 | 000000 |
1,000-lbs. Capacity—304 Stainless Steel Lifting Screw | ||||||||||||||||||
| 3" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 3 3/8" | 7/8" | 1/4" | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 6" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 6 3/8" | 7/8" | 1/4" | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 9" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 9 3/8" | 7/8" | 1/4" | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
| 12" | 5/8"-8 | 0.025" | 3/8" | 3/4" | 1/8" | 1/16" | 2 5/16" | 4" | 2 27/32" | 12 3/8" | 7/8" | 1/4" | 1 1/2" | 9/32" | 4 | 30 in.-lbs. @ 500 rpm | 0000000 | 000000 |
Mounting Plates for Acme Screw Jacks
Add a flat mounting surface to a screw jack to support loads. Plates rotate in unison with the lifting screw.
For technical drawings and 3-D models, click on a part number.
Eyelet End Fittings for Acme Screw Jacks
Attach these fittings to the end of a screw jack to create pivoting connections with clevis rod ends and other linkages. Fittings rotate in unison with the lifting screw.
For technical drawings and 3-D models, click on a part number.
Ball Screw Jacks
Low-friction ball bearings allow these screw jacks to use half the power required by an Acme screw jack to lift the same load. Typically used as actuators, they run at higher speeds than Acme screw jacks. They come assembled, threaded, and ready for hookup. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads.
Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.
For technical drawings and 3-D models, click on a part number.
Upright
Inverted
Top View
Keyway | Body | Tube | Attachment Thread | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel Lg. | Lifting Screw Dia. | Travel Distance per Turn | Shaft Dia. | Lg. | Wd. | Dp. | Lg. | Wd. | Dp. | Lg. | Dia. | Lg. | Size | Input Starting Torque | Each | |
Upright | ||||||||||||||||
4,000-lbs. Capacity—Alloy Steel Lifting Screw | ||||||||||||||||
| 3" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 3 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 000000000 |
| 6" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 6 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 9" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 9 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 12" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 12 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 18" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 18 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 24" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 24 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
Inverted | ||||||||||||||||
4,000-lbs. Capacity—Alloy Steel Lifting Screw | ||||||||||||||||
| 3" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 3 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 6" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 6 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 9" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 9 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 12" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 12 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 18" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 18 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
| 24" | 1" | 0.042" | 1/2" | 1" | 1/8" | 1/16" | 5 5/8" | 4 1/8" | 6 1/4" | 24 3/4" | 1 21/32" | 1 1/8" | 3/4"-16 | 50 in.-lbs. @ 1,750 rpm | 00000000 | 00000000 |
Mounting Plates
Add a flat mounting surface to a ball screw jack to support loads. Plates rotate in unison with the lifting screw.
Mounting Plate | Mounting Holes | |||||||
|---|---|---|---|---|---|---|---|---|
| For Screw Jack Capacity, lbs. | Thread Size | Dia. | Thick. | Ctr.-to-Ctr. | Dia. | No. of | Each | |
| 4,000 | 3/4"-16 | 4 1/4" | 7/16" | 3" | 13/32" | 4 | 0000000 | 0000000 |
Eyelet End Fittings
Attach these fittings to the end of a ball screw jack to create pivoting connections with clevis rod ends and other linkages. Fittings rotate in unison with the lifting screw.
| For Screw Jack Capacity, lbs. | Thread Size | For Jaw Opening Wd. | For Pin Dia. | Lg. | Each | |
| 4,000 | 3/4"-16 | 1" | 1/2" | 3" | 0000000 | 0000000 |
Mounting Plates for Ball Screw Jacks
Add a flat mounting surface to a ball screw jack to support loads. Plates rotate in unison with the lifting screw.
For technical drawings and 3-D models, click on a part number.
Mounting Plate | Mounting Holes | |||||||
|---|---|---|---|---|---|---|---|---|
| For Screw Jack Capacity, lbs. | Thread Size | Dia. | Thick. | Ctr.-to-Ctr. | Dia. | No. of | Each | |
| 4,000 | 3/4"-16 | 4 1/4" | 7/16" | 3" | 13/32" | 4 | 0000000 | 0000000 |
Eyelet End Fittings for Ball Screw Jacks
Attach these fittings to the end of a ball screw jack to create pivoting connections with clevis rod ends and other linkages. Fittings rotate in unison with the lifting screw.
For technical drawings and 3-D models, click on a part number.
| For Screw Jack Capacity, lbs. | Thread Size | For Jaw Opening Wd. | For Pin Dia. | Lg. | Each | |
| 4,000 | 3/4"-16 | 1" | 1/2" | 3" | 0000000 | 0000000 |