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M20, Socket Screw, Cap Head, Self-Colour, High Tensile/ 12.9, DIN 912.

M20 x 2.5mm Pitch (Standard Coarse Thread), Allen/ Hexagonal Socket, Cap Head, Screw/ Bolt, High Tensile (Grade 12.9), DIN 912. Fixaball sells all lengths of M20 x 2.5mm, standard coarse thread, cap head,...
£6.17 £9.86

M20 x 2.5mm Pitch (Standard Coarse Thread), Allen/ Hexagonal Socket, Cap Head, Screw/ Bolt, High Tensile (Grade 12.9), DIN 912.

Fixaball sells all lengths of M20 x 2.5mm, standard coarse thread, cap head, allen screw/ bolts at the best internet prices with free post.

Orders placed before 2pm are dispatched same day (Mon-Fri).

M20 Socket Cap Head Screw/ Bolt lengths at Fixaball:


Allen/ Hexagonal Socket, Cap Head, Screw/ Bolt

Allen/ Hexagonal, Socket Cap Screw/ Bolts come as 'sets' and 'bolts'. The, ‘SET’, term is used to describe a fastener that is fully threaded in lengths up to and around 1 inch (from the underside of the head), depending on the diameter. As the diameter increases the set length will increase. Over around 1 inch (depending on the diameter) in length the fastener will have a, 'shoulder,' or unthreaded area (plain shank) under the head. This space of unthreaded area confirms that the fastener is now a bolt (cap head, bolt in this case). Some people might simply call them Allen or, 'Allan bolts,' in association with the Allen, Hexagonal Key which is used to tighten and loosen the fastener. So, ‘Socket,’ refers to the hexagon shaped indentation found on the top of the fasteners’ head. 

Material: 12.9 Grade Steel, Black/ Self Colour

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/ Oiled

High Tensile Steel/ ZINC

Shiny Metallic

Resistant to light moisture, occasionally (not for external use)

Low moisture environments

    Metric Threads.

    Metric Coarse and Metric Fine threads are in millimetre (mm) units and referes to the distance between the helical coils. The Metric measurement system was 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. Standard (most commonly used) Coarse Threads are used for heavier loads e.g. Fabricating the Eiffel Tower and Fine Threads are used for lighter loads prone to vibrations e.g. motor and machine applications. Coarse threads are the, 'normal', most common versions.

     Image is for illustrative purposes only.