DIN 913HeadlessHexagon socket
DIN 913 M8 × 40 Headless
DIN 913 M8 × 40 is a socket set screw, flat point with a 40 mm nominal length, on a M8 × 1 mm metric thread. A flat ended grub screw used where the shaft must not be marked, or for adjustment applications such as levelling screws.
Diameter8 mm
Length40 mm
Pitch1 mm
Socket size s4 mm
HeadHeadless
DriveHexagon socket
Dimensions
- Standard
- DIN 913
- Type
- Socket set screw, flat point
- Size
- M8 × 40
- Thread
- M8 × 1
- Length L
- 40 mm
- Socket size s
- 4 mm
- Drive
- Hexagon socket
- Head
- Headless
Nominal values in millimetres as published in DIN 913. Estimated weight 15.783 g per piece in steel (15.884 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M8 thread pageDesignationM8 × 1 fine
Pitch1 mm
Major Ø8 mm
Pitch Ø7.35 mm
Minor Ø ext6.77 mm
Tap drillØ 7 mm