Product Description
M20 × 1.5 Grade 10.9 Part-Threaded Hexagon Bolts – DIN 960
M20 × 1.5mm high tensile steel hexagon head bolts in Grade 10.9, with a plain self colour finish. These DIN 960 bolts feature a partially threaded body with an unthreaded shank.
The 1.5mm pitch is finer than the standard M20 coarse thread. Match both the diameter and pitch to the mating nut or tapped hole before fitting.
Specifications
| Product type | Part-threaded hexagon head bolt |
|---|---|
| Nominal thread diameter | M20 — 20mm |
| Thread pitch | 1.5mm |
| Thread type | Metric fine, right-hand |
| Thread coverage | Part threaded, with an unthreaded shank |
| Material | High tensile steel |
| Property class | 10.9 |
| Finish | Plain / self colour |
| Head style | External hexagon |
| Spanner size | 30mm across flats |
| Nominal head height | 12.5mm |
| Dimensional standard | DIN 960 |
Length and Thread Coverage
Bolt length is measured from beneath the hexagon head to the tip. Threaded and unthreaded lengths depend on the selected bolt length. Confirm these dimensions where the position of the thread runout is critical to the assembly.
Key Features
- Grade 10.9 high tensile steel construction.
- M20 × 1.5mm fine thread.
- Part-threaded body with an unthreaded shank.
- 30mm hexagon head for a suitable spanner or socket.
- Plain self colour finish.
Typical Applications
Machinery, equipment assembly, maintenance and engineering repairs where an M20 × 1.5mm Grade 10.9 bolt with an unthreaded shank is specified.
Installation
Check the mating thread carefully: M20 × 1.5mm bolts will not fit M20 coarse-thread nuts or tapped holes. Select a length that provides sufficient thread engagement and allows the joint to clamp fully without binding on the unthreaded shank.
Use a compatible nut of the required property class and tighten to the torque specified for the assembly. Apply corrosion protection where required for the operating environment.
Ordering
Select the required bolt length and pack quantity from the available options before adding to your basket.
Standards
- DIN 960 — hexagon head bolts with a shank and metric fine thread.
- ISO 8765 — corresponding metric fine-thread hexagon bolt reference.
- ISO 898-1 — mechanical property classification for Class 10.9 steel fasteners.
