DIN 607:2010 Round Head Nib Bolt uses a nib below the head for anti-rotation and locating support. The round head provides a safe and clean exposed surface, making it useful where one-side tightening is required or the head cannot be held easily.
The nib can seat into wood, metal plate, or prepared slots to stabilize the bolt during tightening. Applications include woodworking structures, vehicle body components, guardrails, machinery covers, and light-to-medium bracket joints.
The nib dimensions should match the base material or slot to avoid slipping or surface damage during installation. Different strength classes, materials, and coatings can be supplied for indoor and outdoor assembly requirements.

Dimensions unit: mm
| Thread size d | M8 | M10 | M12 | M16 | |
| P | Pitch | 1.25 | 1.5 | 1.75 | 2 |
| b | L≤125 | 22 | 26 | 30 | 38 |
| 125<L≤200 | 28 | 32 | 36 | 44 | |
| L>200 | / | / | / | 57 | |
| dk | Max. | 16.55 | 19.65 | 24.65 | 30.65 |
| Min. | 15.45 | 18.35 | 23.35 | 29.35 | |
| ds | Max. | 8 | 10 | 12 | 16 |
| Min. | 7.42 | 9.42 | 11.3 | 15.3 | |
| g | Max. | 3 | 3.2 | 3.6 | 4.2 |
| Min. | 2.6 | 2.72 | 3.12 | 3.72 | |
| i | Min. | 2.3 | 2.7 | 3.2 | 3.5 |
| k | Max. | 6.38 | 7.45 | 9.65 | 11.75 |
| Min. | 5.62 | 6.55 | 8.75 | 10.65 | |
| r1 | ≈ | 8.9 | 10.5 | 13.3 | 15.8 |
| r2 | Max. | 0.5 | 0.5 | 1 | 1 |
| Thousand pieces of steel weigh ≈kg | - | - | - | - | |
ABOUT US
Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.
The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.
With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.
Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery
NEWS