M3, Socket Screw, Button Head, A2/ 304 Stainless Steel, ISO 7380, DIN 9427, BS 4168, ASME B18.3.4M.
M3, Button Head, Socket Screw/ Allen Bolt, A2/ 304 Stainless Steel, DIN 7380
Fixaball.co.uk sells all lengths of M3 socket, button screws at the best internet prices and free delivery.
Orders placed before 2pm are usually dispatched same day (Mon-Fri).
Please make your size and pack quantity selection from the drop down menus at the top of the page.
Material
Manufactured from A2/ 304 Stainless Steel (STANDARD) for weathering resistance
Button Socket Description
A socket screw with a button head is usually applied to fasten components where aesthetics (looks) are more important. The domed shaped or 'half spherical' shape of the head softens it's appearance and touch.
Chart to show the important dimensions of button sockets, DIN 7380
( LENGTHS: All bolts and set screws are always measured from the underside of the head)
|
Fixaball.co.uk Dimensions Chart Socket Screw Button Head Fasteners |
|||||
|
Size |
Thread Diameter |
Pitch (Standard Coarse) |
Head Diameter |
Head Height |
Allen/ Hex Key Size |
|
M3 |
3mm |
0.5mm |
5.7mm |
1.65mm |
2 |
|
M4 |
4mm |
0.7mm |
7.6mm |
2.2mm |
2.5 |
|
M5 |
5mm |
0.8mm |
9.5mm |
2.75mm |
3 |
|
M6 |
6mm |
1.0mm |
10.5mm |
3.3mm |
4 |
|
M8 |
8mm |
1.25mm |
14mm |
4.4mm |
5 |
They are available in the following materials (please note; not every head type is available in every material):
|
Material/ Finish |
Appearance |
Level of Corrosion Resistance |
Typical Application |
|
High Tensile Steel |
Self-Colour (black with no surface treatment) |
Low, without further surface treatment |
- No exposure to moisture - Often Greased/ Oilied |
|
High Tensile Steel - Zinc |
Bright Shine – Blue to Yellow |
Internal |
- Low exposure to moisture |
|
A2 Stainless Steel |
Dull Shine |
External |
- Intermittent weathering - Hygiene |
|
A4 Stainless Steel |
Dull Shine |
External |
- Constant Weathering - Chemical exposure |
METRIC THREAD
Metric Coarse and Metric Fine
Are in Millimetre (mm) units and were developed to simplify the imperial systems. Europe moved to this system but the Americans choose Imperial as their default. A coarse thread has less helical coils per mm and a fine one has more. Coarse is used for heavier loads and fine is used for lighter loads prone to vibrations.
Image is for illustrative purposes only.
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Alternative Names:
- Button, Socket Screw
- Button, Socket Screws
- Button, Allen Socket Screw
- Button, Allen Socket Screws
- Button, Allan Socket Screw
- Button, Allan Socket Screws
- Button Bolt
- Button Bolts
- Socket, Button Screw
- Socket, Button Screws
- Allen Socket, Button Screw
- Allen Socket, Buttons Screws
- Allan Socket, Button Screw
- Allan Socket, Buttons Screws
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