M2 Allen/ Hexagon Socket, Cap Head, Screw/ Bolt, A2/ 304 Stainless Steel, DIN 912, ISO 4762 Cap Screw, Allen Bolt Fixaball sells lengths of M2, A2/ 304 stainless steel, socket cap screw/ bolts. Descrcription: M2 socket cap screw/ bolts.Material: A2/ 304 Stainess SteelCoating/ Finish: None.Thread: Threads are metric coarse M2 x 0.4mm pitch.Head diameter: 3.8mm.Head height: 2mm.Allen key size: 1.5mm.Standard: DIN 912.Note: Bolt lengths do not include the head. What is a socket cap screw/ bolt? The, ‘Socket Cap Screw/ Allen Bolt,’ term is used to describe a fastener that is either fully or partially threaded. A screw is fully threaded and a bolt is partialy threaded. Some engineers may call them screws if the person uses the shorter length range of sizes. The thread stays the same length as the fastener gets longer and the maximum length of thread is equal to 2.5 times the diameter (or thereabouts). ‘Socket,’ refers to the hexagon shaped indentation found on the top of the fasteners’ head. Here, you can use a hexagon key (Allen Key) to tighten and loosen the fastener. 'Cap' refers to the cylindrical shaped head.   Orders placed before 2pm are 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 'No. of Items in Pack', 'Length' and 'Quantity' of packs, selection from the drop down menus.   M2 Allen/ Hex Socket, Cap Screw/ Bolt lengths at Fixaball: M2 X 3 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 4 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 5 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 8 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 10 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 12 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 14 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 16 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 18 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 20 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 22 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 25 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL M2 X 30 SOCKET CAP SCREW DIN 912 / ISO 4762 A2 STAINLESS STEEL   Red = request lengths Material: A2/ 304 Stainless Steel. Material/ Finish Appearance Level of Corrosion Resistance Typical Application A2/ 304 Stainless Steel Dull Shine External Intermittent weathering   Metric Coarse and Metric Fine threads 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. Coarse threads are the, 'normal', most common versions.  Image is for illustrative purposes only.