M20x250 Hex Set Screw Zinc Class 8.8
Internal Reference:
SET20M250ZP8.8
M20x250 Hex Set Screw Zinc Class 8.8
- ISO 4017 / AS1111.2
- Hexagon Head
- Fully Threaded
- Metric Coarse
- Steel Zinc Plated CR+3
- High Tensile Class 8.8 Steel
Minimum | Maximum | ||
Thread Pitch | 2.5mm | ||
Body diameter | D | 19.69mm | 20.00mm |
Width across flats | f | 29.67mm | 30.00mm |
Across corners | h | 33.53mm | |
Head thickness | T | 12.28mm | 12.72mm |
Overall length | L | 250mm |
Hex Set Screws is the term used for what is effectively a fully threaded hexagon head bolt which doesn't contain a shank (plain or unthreaded section). Although set screws can be used with a nut, typically they will be used in applications where they are threaded directly into something containing a matching pre-threaded hole such as a machinery component. The hex head set screw is designed to be tightened/removed with a suitably fitted wrench, spanner, socket or other hex driver.