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. 932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair corrosion resistance. 360 brass components have excellent machinability and good corrosion resistance.

Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

3D CAD models availableFor 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

M10 2 500 1 1:1 2 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A751 $23.20

M10 2 1,000 1 1:1 2 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A752 42.13

M12 3 500 1 1:1 3 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A741 28.38

M12 3 1,000 1 1:1 3 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A742 55.95

M12 3 2,000 1 1:1 3 7e Grade 2 Rockwell B72 ASTM A108 97048A711 104.23

M16 4 500 1 1:1 4 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A743 35.86

M16 4 1,000 1 1:1 4 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A744 71.38

M16 4 2,000 1 1:1 4 7e Grade 2 Rockwell B72 ASTM A108 97048A715 120.24

M20 4 1,000 1 1:1 4 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A745 82.95

M20 4 2,000 1 1:1 4 7e Grade 2 Rockwell B72 ASTM A108 97048A719 164.71

M26 5 1,000 1 1:1 5 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A746 78.69

M26 5 2,000 1 1:1 5 7e Grade 2 Rockwell B72 ASTM A108 97048A725 143.15

M40 7 1,000 1 1:1 7 7e Grade 2 Not Rated ASTM A108, ASTM A193, DIN 103 97048A747 213.00

M40 7 2,000 1 1:1 7 7e Grade 2 Rockwell B72 ASTM A108 97048A739 327.07

Flange Nuts—Right-Hand Threaded

Flange nuts move objects along the length of a lead screw. They have a wide machinable flange for custom mounting.

Flange

Thread

Size Thread

Pitch, mm Ht.,

mm Dia.,

mm Dia.,

mm Thick.,

mm No. of

Thread Starts Speed

Ratio Travel Distance

per Turn, mm Thread

Fit Hardness Each

932 Bearing Bronze

M10 2 35 28 48 12 1 1:1 2 7H Not Rated 94353A321 $119.83

M12 3 35 28 48 12 1 1:1 3 7H Not Rated 94353A322 78.44

M16 4 35 28 48 12 1 1:1 4 7H Not Rated 94353A323 87.00

M20 4 44 32 55 12 1 1:1 4 7H Not Rated 94353A324 100.98

M26 5 46 38 62 14 1 1:1 5 7H Not Rated 94353A325 119.83

M40 7 66 63 98 16 1 1:1 7 7H Not Rated 94353A326 239.67

Hex Nuts—Right-Hand Threaded

Hex nuts fasten and position lead screw components.

Thread

Size Thread

Pitch, mm Ht.,

mm Wd.,

mm No. of

Thread Starts Speed

Ratio Travel Distance

per Turn, mm Thread

Fit Fastener Strength

Grade/Class Hardness Each

Carbon Steel

M12 3 12 22.2 1 1:1 3 7H Grade 2 Not Rated 94353A120 $30.27

M16 4 16 27 1 1:1 4 7H Grade 2 Not Rated 94353A160 32.10

M20 4 20 31.75 1 1:1 4 7H Grade 2 Not Rated 94353A200 36.35

M26 5 25.4 41.3 1 1:1 5 7H Grade 2 Not Rated 94353A260 51.99

M40 7 39.9 60.33 1 1:1 7 7H Grade 2 Not Rated 94353A400 89.32

Square Nuts—Right-Hand Threaded

Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.

Thread

Size Thread

Pitch, mm Ht.,

mm Wd.,

mm No. of

Thread Starts Speed

Ratio Travel Distance

per Turn, mm Thread

Fit Hardness Each

360 Brass

M10 2 20 19 1 1:1 2 7H Not Rated 94353A311 $43.56

M12 3 25 25 1 1:1 3 7H Not Rated 94353A312 55.20

M16 4 35 28 1 1:1 4 7H Not Rated 94353A313 42.12

M20 4 50 38 1 1:1 4 7H Not Rated 94353A314 74.78