Stainless Steel Metal Shoulder Screws M5 Hexagonal Cup Socket Head
Shoulder Bolt
Cup head Shoulder Screw is made in a hexagonal socket and chamfer
on the head , machine fine threads and flat point and different
diameters from head to point .
Shoulder Screw is also known as Shoulder bolt , the diameter under
head with two a shaft and a thread section , the shaft diameter is
more bigger than the thread diameter and make a role of axis that
close-fitting moving pieces operation .
Shoulder screws are made from stainless steel with polished surface
for high heavy load . Besides ,
Shoulder screw can be made from alloy steel and brass material for
different load requests .
Specification for shoulder screws from M3 to M6 for the popular
applicaitons .
| d | M5 |
| d1 | 6.2 |
| D | 8 |
| L | 25 |
| H | 4 |
| S | 4 |
| L1 | 15 |
| L2 | 10 |
| t | 2.5 |
| P | 0.8 |
More sizes
| Size Metric | Thread length | Head Height | Head diameter | Shoulder Length | Shoulder diameter |
| d | L2 | H | D | L1 | d1 |
| M3X8 | 4 | 3.2 | 6 | 4 | 3.2 |
| M3X10 | 4 | 3.2 | 6 | 6 | 3.2 |
| M3X12 | 4 | 3.2 | 6 | 8 | 3.2 |
| M3X15 | 4 | 3.2 | 6 | 11 | 3.2 |
| M3.5X8 | 4.8 | 3.2 | 7 | 3.2 | 4 |
| M3.5X10 | 4.8 | 3.2 | 7 | 5.2 | 4 |
| M3.5X12 | 4.8 | 3.2 | 7 | 6.8 | 4 |
| M3.5X15 | 4.8 | 3.2 | 7 | 9.8 | 4 |
| M3.5X16 | 4.8 | 3.2 | 7 | 10.8 | 4 |
| M3.5X18 | 4.8 | 3.2 | 7 | 12.8 | 4 |
| M3.5X20 | 4.8 | 3.2 | 7 | 14.8 | 4 |
| M4X10 | 4.8 | 4 | 8 | 5.8 | 4.8 |
| M4X12 | 4.8 | 4 | 8 | 6.8 | 4.8 |
| M4X15 | 4.8 | 4 | 8 | 9.8 | 4.8 |
| M4X16 | 4.8 | 4 | 8 | 9.8 | 4.8 |
| M4X19 | 4.8 | 4 | 8 | 13.8 | 4.8 |
| M4X20 | 4.8 | 4 | 8 | 14.8 | 4.8 |
| M4X25 | 4.8 | 4 | 8 | 19.8 | 4.8 |
| M4X30 | 4.8 | 4 | 8 | 24.8 | 4.8 |
| M5X12 | 6.3 | 4.8 | 10 | 5.7 | 6.35 |
| M5X15 | 6.3 | 4.8 | 10 | 8.7 | 6.35 |
| M5X20 | 6.3 | 4.8 | 10 | 13.7 | 6.35 |
| M5X25 | 6.3 | 4.8 | 10 | 18.7 | 6.35 |
| M5X30 | 6.3 | 4.8 | 10 | 23.7 | 6.35 |
| M5X35 | 6.3 | 4.8 | 10 | 28.7 | 6.35 |
| M6X15 | 9 | 5.5 | 11 | 6 | 9.5 |
| M6X18 | 9 | 5.5 | 11 | 9 | 9.5 |
| M6X20 | 9 | 5.5 | 11 | 11 | 9.5 |
| M6X25 | 9 | 5.5 | 11 | 16 | 9.5 |
| M6X30 | 9 | 5.5 | 11 | 21 | 9.5 |
| M6X35 | 9 | 5.5 | 11 | 26 | 9.5 |
| M6X40 | 9 | 5.5 | 11 | 31 | 9.5 |
Tolerance for Shoulder Screws
The tolerances and sizes for shoulder screw are very strict for
special application , especially the shoulder diameter must to be
controlled as small as possible .
We take advanced machine to processed shoulder screw , the
dimensions tolerances can be 0.01mm .
Finish for Shoulder Screws
| Finish | Characteristics |
| Zinc | Various color can be choosed and perfect on anti-corrosion |
| Nickel | Make the surface of the screws more bright and hardened and the
performance of screws will be improved |
| Polish | Improving the brightness of surface but is inferior is not as zinc
in anti-corrosion |
| Tin | It is very perfect to be anti-rust , and widely used to components |
| Brass | It is usually used with Nickel for more good anti-corrrosion. |
| Dacromet | Is used for screws with big sizes and can stop screws to be rusted
long time even under bad surroundings . |
Features for Shoulder Screws
1 , High tensile strenth
2 , No Magnet
3 , Corrosion resistance
4 , Long service
5 , Easy to be operated
Package for Shoulder Screws
Packages are assorted and strong , we can arrange special packages
according to your requirements , all Packed in Seaworthy or
airworthy for Export .
In addition to , we supply more sizes with customzied designs for
shoulder screws , and material covers carbon steel , Alloy steel
etc , property class from 4.6 to 12.9 .
