A
Anonymous
Apr 22, 2026
Rating: 5/5
Fast delivery
Arrived quickly and packaged well to prevent rust. The protective oil coating was just right.
Description
Grade 12.9 Shoulder Screw with Hex Socket, M5-M16 Equal Height
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Alloy Steel |
| Strength Grade | 12.9 |
| Head Style | Hex Socket Head |
| Drive Type | Metric Hex Key |
| Available Sizes | M5, M6, M8, M10, M12, M16 |
| Shoulder Finish | Precision Ground |
| Surface Treatment | Black Oxide |
| Hardness | 39-44 HRC |
| Application | Mold Making, Jigs, Fixtures |
| Standard | ISO 7379 / DIN 7984 |
5 reviews
A
Anonymous
Apr 12, 2026
Rating: 5/5
Accurate shoulder length
Critical for my alignment project. The shoulder length was consistent across all bolts in the pack.
A
Anonymous
Apr 11, 2026
Rating: 5/5
Perfect for mold bases
Used these for a new stamping die setup. The shoulder tolerance is excellent and the hex socket did not strip under high torque.
A
Anonymous
Mar 03, 2026
Rating: 5/5
High quality steel
Very impressed with the hardness. These are genuine 12.9 grade and hold up well in high vibration environments.
A
Anonymous
Feb 03, 2026
Rating: 5/5
Great value
Better pricing than my local supplier with comparable quality. Will be ordering more sizes soon.
5 FAQ
Q: Do you stock M14 size?
A: Currently we only stock the sizes listed in the attributes section.
Q: What is the shoulder tolerance?
A: The shoulder diameter generally follows h6 tolerance standards.
Q: Is the thread full length?
A: No, these are shoulder screws with a specific unthreaded shoulder section.
Q: Are these heat treated?
A: Yes, grade 12.9 indicates they are heat treated for high strength.
Q: What is the lead time for bulk orders?
A: Standard orders ship within 48 hours. Bulk orders may take 3-5 business days.
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