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Acme Lead Screws and Nuts
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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.
Hex-Head Screws—Right-Hand Thread
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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.
Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
Travel Distance per Turn—Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
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Thread Size | Thread Type | 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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/4"-16 | Acme | 4" | 1 | 1:1 | 0.063" | 3" to 4" | 7/16" | 5/32" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A120 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8"-12 | Acme | 4" | 1 | 1:1 | 0.083" | 3 1/2" to 4" | 9/16" | 15/64" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A150 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/2"-10 | Acme | 4" | 1 | 1:1 | 0.1" | 3 1/2" to 4" | 3/4" | 5/16" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A180 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 5/8"-8 | Acme | 4" | 1 | 1:1 | 0.125" | 3 1/2" to 4" | 15/16" | 25/64" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A220 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/4"-6 | Acme | 4" | 1 | 1:1 | 0.167" | 3 1/2" to 4" | 1 1/8" | 15/32" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A250 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 7/8"-6 | Acme | 4" | 1 | 1:1 | 0.167" | 3 1/2" to 4" | 1 5/16" | 35/64" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A280 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1"-5 | Acme | 4" | 1 | 1:1 | 0.2" | 3 1/2" to 4" | 1 1/2" | 39/64" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A320 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/4"-5 | Acme | 4" | 1 | 1:1 | 0.2" | 3 1/2" to 4" | 1 7/8" | 25/32" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A350 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/2"-4 | Acme | 4" | 1 | 1:1 | 0.25" | 3 1/2" to 4" | 2 1/4" | 15/16" | Acme Class 2G | SAE Grade 5 | Rockwell C19 | 105,000 | 93097A380 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
