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System of Measurement System of Measurement |
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Thread Type Thread Type |
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Length Length | Show |
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Length Length | Hide |
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Component Component |
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![]() | Lead Screw |
Hardness Hardness |
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Material Material |
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Thread Direction Thread Direction |
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Threading Threading |
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![]() | Fully Threaded |
Number of Thread Starts Number of Thread Starts |
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Speed Ratio Speed Ratio |
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Finish Finish |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Tensile Strength Tensile Strength |
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Thread Fit Thread Fit |
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Specifications Met Specifications Met |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Selecting Compatible Lead Screws and Nuts
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Metric 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, size, and pitch. Class 7E and 7H components are compatible.
Black-oxide carbon steel components have mild corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Lead Screws—Right-Hand Threaded

Thread Size | Thread Pitch, mm | Lg., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Fastener Strength Grade/Class | Hardness | Specifications Met | Each | |
Black-Oxide Carbon Steel | |||||||||||
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M12 | 3 | 2,000 | 1 | 1:1 | 3 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 0000000 |
M16 | 4 | 2,000 | 1 | 1:1 | 4 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
M20 | 4 | 2,000 | 1 | 1:1 | 4 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
M26 | 5 | 2,000 | 1 | 1:1 | 5 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |
M40 | 7 | 2,000 | 1 | 1:1 | 7 | Class 7E | Grade 2 | Rockwell B72 | ASTM A108 | 000000000 | 000000 |