A
Anonymous
Apr 06, 2026
Rating: 5/5
Fast Delivery
Needed M10 shoulder bolts urgently. Arrived on time and well packaged to prevent rust.
Description
Grade 12.9 Hex Socket Shoulder Bolts Screws Equal Height Shaft Collar Bolts M5 M6 M8 M10 M12 M13 M16 M20
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Head Style | Hex Socket |
| Drive Type | Internal Hex |
| Thread Size | M5, M6, M8, M10, M12, M13, M16, M20 |
| Surface Finish | Black Oxide |
| Shank Design | Equal-Length Shoulder |
| Standard Compliance | DIN 912 / ISO 4762 |
| Hardness Rating | 39-44 HRC |
| Packaging | Bulk Box |
5 reviews
A
Anonymous
Mar 30, 2026
Rating: 4/5
Good Bulk Pack
Solid screws. One had a slightly stripped socket but the rest were fine for the price.
A
Anonymous
Mar 26, 2026
Rating: 5/5
High Tensile Strength
Perfect for my CNC project. The 12.9 grade holds up well under tension without stripping.
A
Anonymous
Mar 08, 2026
Rating: 5/5
Professional Grade
Using these for automotive assembly. No issues with shearing under high torque settings.
A
Anonymous
Feb 14, 2026
Rating: 5/5
Precise Dimensions
Measured the M8 bolts and they are spot on. Great quality control on the shoulder length.
5 FAQ
Q: Is the thread pitch standard coarse?
A: Yes, these feature standard metric coarse threading.
Q: What hex key size is needed for M10?
A: Typically an 8mm hex key is required for M10 socket heads.
Q: Are these suitable for outdoor use?
A: Black oxide offers limited corrosion resistance. We recommend oiling for outdoor environments.
Q: Can these be welded?
A: Welding high-strength steel may alter hardness. Consult a specialist before welding.
Q: Do you offer mill certificates?
A: Yes, contact support before ordering for certification details.
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