M8, Hex Bolt, A4/ 316 Stainless Steel, DIN 931.
M8 Hex Bolt A4/ 316 Stainless Steel, DIN 931
Fixaball sell all sizes of A4 hex bolts at great prices
Orders placed before 2pm are usually dispatched same day (Mon-Fri).
Standard, Free Delivery is Royal Mail, 2nd Class (2-5 days, most likely 2 days). For a faster delivery time, select 1st class or courier at checkout.
Please make your size and pack quantity selection from the drop down menus.
Lengths available: 40mm, 45mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm.
Bolt
Bolt is the term used for a partially threaded fastener (shoulder bolt/ plain shank bolt), with a head; designed to be used with a nut and washer. They come with the following formed heads:
Material:
A4 Stainless Steel (marine) also known as 316. Marine grade stainless has a very high resistance to corrosion
Thread
Metric Coarse Thread - measured in Millimeter (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.
Bolt Thread
The thread length of a shoulder bolt/ plain shank bolt tends to be 2.5 times the diameter of the fastener. Please ask for exact measurements if the shoulder is crucial.
Metric Threads/ Pitches |
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Fixaball – Specialists in Fixings and Fasteners |
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Pitch / Thread Types |
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Size |
Standard/ Coarse |
Fine |
Super Fine |
M1.6 |
0.35 |
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M2 |
0.4 |
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M2.5 |
0.45 |
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M3 |
0.5 |
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M4 |
0.7 |
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M5 |
0.8 |
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M6 |
1.0 |
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M7 |
1.0 |
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M8 |
1.25 |
1.0 |
|
M10 |
1.5 |
1.25 |
1.0 |
M12 |
1.75 |
1.5 |
1.25 |
M14 |
2.0 |
1.5 |
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M16 |
2.0 |
1.5 |
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M18 |
2.5 |
2.0 |
1.5 |
M20 |
2.5 |
2.0 |
1.5 |
M22 |
2.5 |
2.0 |
1.5 |
M24 |
3.0 |
2.0 |
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M27 |
3.0 |
2.0 |
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M30 |
3.5 |
2.0 |
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M33 |
3.5 |
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M36 |
4.0 |
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M39 |
4.0 |
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M45 |
4.5 |
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M52 |
5.0 |
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M56 |
5.5 |
Bolt vs Screw
A screw screws into something, a bolt joins several things together from both sides of materials joined. A screw is fully threaded from underneath the head and a bolt is partially threaded (has a part-plain shank)
Image is for illustrative purposes only.