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M12, Hex Bolt, A4/ 316 Stainless Steel. DIN 931.

M12 Bolts, Hexagon Head, A4/ 316 Stainless Steel, DIN 931. Fixaball sells all lengths of M12, A4 hex bolts at great prices Standard, Free Delivery is Royal Mail, 2nd Class (2-5...
£4.23

M12 Bolts, Hexagon Head, A4/ 316 Stainless Steel, DIN 931.

Fixaball sells all lengths of M12, A4 hex bolts at great prices

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. Packs weighing under 250grams are upgraded to 1st class as much as possible,

Please make your size and pack quantity selection from the drop down menus.

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 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.

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

Fixaball – Specialists in Fixings and Fasteners

Pitch / Thread Types

Size

Standard/ Coarse

Fine

Super Fine

M1.6

0.35

M2

0.4

M2.5

0.45

M3

0.5

M4

0.7

M5

0.8

M6

1.0

M7

1.0

M8

1.25

1.0

M10

1.5

1.25

1.0

M12

1.75

1.5

1.25

M14

2.0

1.5

M16

2.0

1.5

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

M27

3.0

2.0

M30

3.5

2.0

M33

3.5

M36

4.0

M39

4.0

M45

4.5

M52

5.0

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.