✅ Product Details
Engineered for strength, precision, and reliability, these 12.9 grade countersunk hexagon screws are made from DIN912 alloy steel and heat-treated to a hardness of 39–44 HRC. Trusted by major international brands like ESEEKnives and Karambit.com for their premium machetes, these screws offer outstanding performance for handle assembly, repair, or customization. Perfect for both professional knife makers and DIY enthusiasts.
✅ Specification
• Name: 12.9 Grade Countersunk Hexagon Screw Rivets Bolts Fasteners DIY Gold Handle Nail
• Material: DIN912 Alloy Steel
• Heat-Treated Hardness: 39–44 HRC
• Compatible With: ESEEKnives, Karambit.com special machetes, and similar handle hole sizes
• Includes: 10 Pcs 12.9 Grade Countersunk Hexagon Screw (knife not included)
• Available Variations:
- 5 mm Handle Hole — Sizes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
- 6 mm Handle Hole — Sizes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
• Specifications per size: Total length, screw length, screw diameter, nut diameter, countersunk thickness, and thread (M4) — see table below for full details.
5 MM Handle Hole – Sizes
| Size | Total Length (mm) | Screw Length (mm) | Screw Diameter (mm) | Nut Diameter (mm) | Countersunk Thickness (mm) | Thread |
|---|---|---|---|---|---|---|
| 1 | 19.2 | 14 | 5 | 7.8 | 2.6 | M4 |
| 2 | 21.2 | 16 | 5 | 7.8 | 2.6 | M4 |
| 3 | 22.2 | 17 | 5 | 7.8 | 2.6 | M4 |
| 4 | 25.2 | 20 | 5 | 7.8 | 2.6 | M4 |
| 5 | 14.2 | 9 | 5 | 7.8 | 2.6 | M4 |
| 6 | 17.2 | 12 | 5 | 7.8 | 2.6 | M4 |
| 7 | 30.2 | 25 | 5 | 7.8 | 2.6 | M4 |
| 8 | 35.2 | 30 | 5 | 7.8 | 2.6 | M4 |
| 9 | 40.2 | 35 | 5 | 7.8 | 2.6 | M4 |
| 10 | 45.2 | 40 | 5 | 7.8 | 2.6 | M4 |
6 MM Handle Hole – Sizes
| Size | Total Length (mm) | Screw Length (mm) | Screw Diameter (mm) | Nut Diameter (mm) | Countersunk Thickness (mm) | Thread |
|---|---|---|---|---|---|---|
| 1 | 19.2 | 14 | 6 | 7.8 | 2.6 | M4 |
| 2 | 21.2 | 16 | 6 | 7.8 | 2.6 | M4 |
| 3 | 22.2 | 17 | 6 | 7.8 | 2.6 | M4 |
| 4 | 25.2 | 20 | 6 | 7.8 | 2.6 | M4 |
| 5 | 14.2 | 9 | 6 | 7.8 | 2.6 | M4 |
| 6 | 17.2 | 12 | 6 | 7.8 | 2.6 | M4 |
| 7 | 30.2 | 25 | 6 | 7.8 | 2.6 | M4 |
| 8 | 35.2 | 30 | 6 | 7.8 | 2.6 | M4 |
| 9 | 40.2 | 35 | 6 | 7.8 | 2.6 | M4 |
| 10 | 45.2 | 40 | 6 | 7.8 | 2.6 | M4 |
