SHOULDER BOLT – SOCKET HEAD
ISO 7379 / ASME B18.3
Thread Type : A straight shank fastener with external threads designed to travel through a hole or nut that’s pre-tapped to make a mating thread for the screw.
Tensile Strength : Compared to Grade 12.9
Tolerance Grade ：Commercial / Precision
| CODE | SPEC (THREAD DIA) | SPEC (SHOULDER LENGTH) | SHOULDER DIA | HEAD DIA | HEAD HEIGHT | DRIVE | MATERIAL | FINISHING |
| STSLDSOC | M5 | 8 / 10 / 12 / 16 / 20 / 22 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 | 6 | 9.78-10.22 | 4.32-4.5 | hex socket | Alloy Steel / Stainless Steel A2 | Plain / Oxide / Passivated |
| STSLDSOC | M6 | 8 / 10 / 12 / 16 / 20 / 22 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 | 8 | 12.73-13.27 | 5.32-5.5 | hex socket | ||
| STSLDSOC | M8 | 10 / 12 / 16 / 20 / 22 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 / 110 / 120 / 130 / 140 / 150 / 160 | 10 | 15.73-16.27 | 6.78-7 | hex socket | ||
| STSLDSOC | M10 | 12 / 16 / 20 / 22 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 / 230 / 240 | 12 | 17.73-18.27 | 8.78-9 | hex socket | ||
| STSLDSOC | M12 | 16 / 20 / 22 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 / 230 / 240 / 250 / 260 | 16 | 23.67-24.33 | 10.73-11 | hex socket | ||
| STSLDSOC | M16 | 20 / 22 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 / 210 / 220 / 230 / 250 | 20 | 29.67-30.33 | 13.73-14 | hex socket | ||
| STSLDSOC | M20 | 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 70 / 75 / 80 / 85 / 90 / 95 / 100 / 110 / 120 / 130 / 140 / 150 / 160 / 170 / 180 / 190 / 200 / 210 / 220 / 230 / 240 / 250 / 260 / 270 | 25 | 35.61-36.39 | 15.73-16 | hex socket | ||
| STSLDSOC | #3/16 | 3/8″ / 1/2″ / 5/8″ / 3/4″ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ / 2-1/4″ / 2-1/2″ / 2-3/4″ / 3″ | #1/4 | 9.07-9.52 | 4.62-4.76 | hex socket | ||
| STSLDSOC | #1/4 | 5/8″ / 3/4″ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ / 2-1/4″ / 2-1/2″ / 2-3/4″ / 3″ / 3-1/4″ | #5/16 | 10.64-11.12 | 5.41-5.56 | hex socket | ||
| STSLDSOC | #5/16 | 5/8″ / 3/4″ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ / 2-1/4″ / 2-1/2″ / 3″ / 3-1/4″ / 3-1/2″ / 4″ | #3/8 | 13.79-14.3 | 6.2-6.35 | hex socket | ||
| STSLDSOC | #3/8 | 3/4″ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ / 2-1/4″ / 2-1/2″ / 3″ / 3-1/4″ / 3-1/2″ / 4″ / 4-1/4″ / 4-1/2″ / 5″ / 5-1/2″ / 6″ | #1/2 | 18.52-19.05 | 7.77-7.95 | hex socket | ||
| STSLDSOC | #1/2 | 1″ / 1-1/4″ / 1-1/2″ / 2″ / 2-1/4″ / 2-1/2″ / 3″ / 3-1/2″ / 4″ / 4-1/2″ / 5″ / 6″ | #5/8 | 21.67-22.22 | 9.35-9.52 | hex socket |