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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.
Lead Screws—Right-Hand Thread
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Carbon Steel—Carbon steel components are easier to machine than alloy steel components.
Zinc-Plated Carbon Steel—Zinc-plated carbon steel components have mild corrosion resistance and are easier to machine than alloy steel components.
Alloy Steel—Alloy steel components are harder and stronger than carbon steel components.
18-8 Stainless Steel—18-8 stainless steel components have good corrosion resistance.
316 Stainless Steel—316 stainless steel components have excellent corrosion resistance.
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.
Thread Size | Thread Type | Lg. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Tensile Strength, psi | Specs. Met | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Carbon Steel | ||||||||||||||
| 1/4"-16 | Acme | 12" | 1 | 1:1 | 0.063" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A703 | 00000 | ||
| 3/8"-8 | Stub Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A706 | 00000 | ||
| 3/8"-12 | Acme | 12" | 1 | 1:1 | 0.083" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A712 | 0000 | ||
| 1/2"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A715 | 0000 | ||
| 1/2"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A718 | 0000 | ||
| 5/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A721 | 0000 | ||
| 5/8"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A724 | 0000 | ||
| 3/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A728 | 00000 | ||
| 3/4"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A732 | 0000 | ||
| 3/4"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A736 | 0000 | ||
| 7/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A739 | 00000 | ||
| 1"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A741 | 00000 | ||
| 1"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A744 | 00000 | ||
| 1"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A748 | 00000 | ||
| 1"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A751 | 00000 | ||
| 1"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A754 | 00000 | ||
| 1 1/8"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A757 | 00000 | ||
| 1 1/4"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A761 | 00000 | ||
| 1 1/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A764 | 00000 | ||
| 1 3/8"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A767 | 00000 | ||
| 1 1/2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A771 | 00000 | ||
| 1 1/2"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A774 | 00000 | ||
| 2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A779 | 00000 | ||
| 2 1/2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 64,000 | ASTM A108 | 98935A785 | 00000 | ||
Zinc-Plated Carbon Steel | ||||||||||||||
| 3/8"-8 | Stub Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A730 | 00000 | ||
| 1/2"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A735 | 00000 | ||
| 5/8"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A740 | 00000 | ||
| 3/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A745 | 00000 | ||
| 3/4"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A750 | 00000 | ||
| 1"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A755 | 00000 | ||
| 1"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A760 | 00000 | ||
| 1 1/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 53,000 | ASTM A108 | 93255A487 | 00000 | ||
| 1 1/2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | SAE Grade 2 | Rockwell B61 | 68,000 | ASTM A108 | 98941A770 | 00000 | ||
Alloy Steel | ||||||||||||||
| 1/4"-16 | Acme | 12" | 1 | 1:1 | 0.063" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A904 | 00000 | ||
| 3/8"-8 | Stub Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A908 | 00000 | ||
| 3/8"-10 | Stub Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A912 | 00000 | ||
| 3/8"-12 | Acme | 12" | 1 | 1:1 | 0.083" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A916 | 00000 | ||
| 1/2"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A920 | 00000 | ||
| 1/2"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A924 | 00000 | ||
| 5/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A928 | 00000 | ||
| 5/8"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A932 | 00000 | ||
| 3/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A936 | 00000 | ||
| 3/4"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A940 | 00000 | ||
| 3/4"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A944 | 00000 | ||
| 7/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A948 | 00000 | ||
| 1"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A952 | 00000 | ||
| 1"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A956 | 00000 | ||
| 1"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A960 | 00000 | ||
| 1"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A964 | 00000 | ||
| 1"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A968 | 00000 | ||
| 1 1/8"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A975 | 00000 | ||
| 1 1/4"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A976 | 00000 | ||
| 1 1/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93420A650 | 00000 | ||
| 1 1/2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93420A750 | 000000 | ||
| 1 1/2"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A990 | 00000 | ||
| 2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | ASTM Grade B7 | Rockwell C35 | 125,000 | ASTM A193 | 93410A993 | 000000 | ||
18-8 Stainless Steel | ||||||||||||||
| 1/4"-16 | Acme | 12" | 1 | 1:1 | 0.063" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A601 | 00000 | ||
| 3/8"-8 | Stub Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A603 | 00000 | ||
| 3/8"-10 | Stub Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A606 | 00000 | ||
| 3/8"-12 | Acme | 12" | 1 | 1:1 | 0.083" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A609 | 00000 | ||
| 1/2"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A612 | 00000 | ||
| 1/2"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A615 | 00000 | ||
| 5/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A618 | 00000 | ||
| 5/8"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A621 | 00000 | ||
| 3/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A624 | 00000 | ||
| 3/4"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A627 | 00000 | ||
| 3/4"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A630 | 00000 | ||
| 7/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A633 | 00000 | ||
| 1"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A636 | 00000 | ||
| 1"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | — | Rockwell B96 | Not Rated | — | 95061A639 | 00000 | ||
316 Stainless Steel | ||||||||||||||
| 1/4"-16 | Acme | 12" | 1 | 1:1 | 0.063" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A631 | 00000 | ||
| 3/8"-8 | Stub Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A590 | 00000 | ||
| 3/8"-12 | Acme | 12" | 1 | 1:1 | 0.083" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A634 | 00000 | ||
| 1/2"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A595 | 00000 | ||
| 5/8"-8 | Acme | 12" | 1 | 1:1 | 0.125" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A600 | 00000 | ||
| 3/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A605 | 00000 | ||
| 3/4"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A610 | 00000 | ||
| 7/8"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A637 | 00000 | ||
| 1"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A641 | 00000 | ||
| 1"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A615 | 00000 | ||
| 1"-6 | Acme | 12" | 1 | 1:1 | 0.167" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A620 | 00000 | ||
| 1"-10 | Acme | 12" | 1 | 1:1 | 0.1" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A644 | 000000 | ||
| 1 1/4"-5 | Acme | 12" | 1 | 1:1 | 0.2" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A625 | 000000 | ||
| 1 1/2"-4 | Acme | 12" | 1 | 1:1 | 0.25" | Acme Class 2G | ASTM Grade B8M | Rockwell B97 | 75,000 | ASTM A193 | 97014A630 | 000000 | ||
