ISO 7380Button head (low dome)Hexagon socket
ISO 7380 M3 × 30 Button head (low dome)
ISO 7380 M3 × 30 is a button head socket screw with a 30 mm nominal length, on a M3 × 0.5 mm metric thread. A low dome head with internal hex drive. Chosen when you want a finished look without machining a countersink.
Diameter3 mm
Length30 mm
Pitch0.5 mm
Socket size s2 mm
Head Ø dk5.7 mm
HeadButton head (low dome)
DriveHexagon socket
Dimensions
- Standard
- ISO 7380
- Type
- Button head socket screw
- Size
- M3 × 30
- Thread
- M3 × 0.5
- Length L
- 30 mm
- Socket size s
- 2 mm
- Head diameter dk
- 5.7 mm
- Head height k
- 1.65 mm
- Drive
- Hexagon socket
- Head
- Button head (low dome)
Nominal values in millimetres as published in ISO 7380. Estimated weight 1.995 g per piece in steel (2.008 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M3 thread pageDesignationM3 × 0.5
Pitch0.5 mm
Major Ø3 mm
Pitch Ø2.68 mm
Minor Ø ext2.39 mm
Tap drillØ 2.5 mm