Button Head Screw
WhatsApp us the size, grade, finish and quantity. We reply within one working day (Mon to Sat, 10 am to 8 pm).
WhatsApp us Get a Quote +91 90333 11425 Download catalogue (PDF)JMIKS Fasteners supplies button head screws (hexagon socket button head screws) in SS 304, SS 316 and SS 202, and in mild steel grade 4.6 and high tensile grades 8.8, 10.9 and 12.9. Sizes run from M3 to M36 and ¼” to 1-1/4″ BSW, in lengths from 6 mm to 250 mm.
Standard : DIN / IS
Size : Metric : M3 To M36 / BSW : ¼” to 1-1/4”
Material Grade: SS304 | SS316 | SS202
Mild Steel Grade : 4.6
High Tensile Grade : 8.8 | 10.9 | 12.9
Length : 6mm to 250mm
The low, rounded head gives a neat finish and has no sharp edges, so it is safe where people touch the surface. The hexagon socket takes an Allen key. The common standard is ISO 7380.
Key dimensions of ISO 7380 hexagon socket button head screws in common sizes, in mm.
| Size | Thread pitch | Head diameter | Head height | Allen key |
|---|---|---|---|---|
| M3 | 0.5 | 5.7 | 1.65 | 2 |
| M4 | 0.7 | 7.6 | 2.2 | 2.5 |
| M5 | 0.8 | 9.5 | 2.75 | 3 |
| M6 | 1.0 | 10.5 | 3.3 | 4 |
| M8 | 1.25 | 14.0 | 4.4 | 5 |
| M10 | 1.5 | 17.5 | 5.5 | 6 |
| M12 | 1.75 | 21.0 | 6.6 | 8 |
| M16 | 2.0 | 28.0 | 8.8 | 10 |
Typical dimensions as per ISO 7380; refer to the standard for tolerances.
Less than an Allen cap screw, because the head and socket are smaller. Use them for light to medium loads, and choose an Allen cap screw for heavy joints.
To ISO 7380, M3 takes a 2 mm Allen key, M4 2.5 mm, M5 3 mm, M6 4 mm, M8 5 mm, M10 6 mm and M12 8 mm. This is one size smaller than for an Allen cap screw of the same thread.
A button head screw sits on top of the surface with a low, rounded head. An Allen CSK screw sits flush in a countersunk hole. Choose the CSK screw when nothing should stand above the surface.
Send the size, grade, finish and quantity on WhatsApp. We reply with the rate and stock position within one working day.
