M8, Hex Bolt, A4/ 316 Stainless Steel, DIN 931.
M8 Bolts, Hexagon Head, A4/ 316 Stainless Steel, DIN 931
Fixaball.co.uk sell all sizes of A4 hex bolts at great prices, with free, 1st class 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.
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.
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Metric Threads/ Pitches |
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Fixaball.co.uk – Specialists in Fixings and Fasteners |
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Pitch / Thread Types |
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Size |
Standard/ Coarse |
Fine |
Super Fine |
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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 |
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M10 |
1.5 |
1.25 |
1.0 |
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M12 |
1.75 |
1.5 |
1.25 |
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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 |
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M20 |
2.5 |
2.0 |
1.5 |
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M22 |
2.5 |
2.0 |
1.5 |
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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 |
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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.
Please choose from the following for technical and/ or sales enquiries.
- Fill out the website enquiry form
- Click on the CHAT icon on the website
- Call: 01242 522244
- Email: sam@fixaball.co.uk
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