Bolts and Machine Screws – Metric

Hex Head Bolts ISO 4014 (DIN 931)

The hex head bolt is the most common type of fastener, and is designed to be tightened with a standard spanner or ratchet and socket. A standard hex bolt is a staple across the world and used in most assemblies.

Hex Head Setscrews ISO 4017 (DIN 933)

Commonly referred to as a setscrew or simply as a bolt. The fully threaded ISO 4017 or DIN 933 should not be confused with it’s DIN 931 equivalent. A standard spanner or ratchet is typically used to fit this product. Used for decades on all types of assembly throughout the world. As with the DIN 931 hex bolt, the hex drive allows a higher torque to be applied.

Hex Head Flange Bolts ISO 1665 (DIN 6921)

The DIN 6721 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex driven counterparts. Typically used where The flange offers protection for the bolted component where the driving tool may otherwise scratch it’s surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank.

Slotted Hex Head Setscrews (DIN 933)

Hexagon Head Set Screw with Slot. Manufactured similar to ISO 4017 (DIN 933) and always fully threaded. Perfect for use where a spanner or socket are unable to be utilised.

Socket Head Cap Screws ISO 4762 (DIN 912)

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ISO 4762 or DIN 912, the contact surfaces of this screw or bolt are protected from external damage. Generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination. A guaranteed fully threaded variant is also available.
M1.6 M2 M2.5 M3 M4 M5 M6 M8
M10 M12 M14 M16 M20

Socket Head Cap Screws With Fine Thread ISO 4762 (DIN 912)

Fine Pitch Socket Head Cap Screws made in the UK and with a material grade of A4-80, suitable for use in salt water conditions. Fine pitch screws are used in conjunction with fine pitch nuts which are also available on this website. The extra thread engagement gained from the finer pitch gives a more secure and stronger fitment. Used where high levels of strength are required – a fine pitch bolt has a larger stress area creating better tension than its coarse pitch counterpart, also they are less inclined to loosening through vibration due to the thread incline being smaller.

Socket Head Cap Screws With Full Thread ISO 4762 (DIN 912)

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ISO 4762 or DIN 912, the contact surfaces of this screw or bolt are protected from external damage. This variant is supplied fully threaded regardless of length of screw.

M5 M6 M8 M10 M12

Socket Head Button Screws ISO 7380 part 1

A popular and attractive socket head screw, typically used where aesthetics are important, or where a lower profile domed finish is required. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced. Manufactured to ISO 7380, and almost always fully threaded.

M2.5 M3 M4 M5 M6 M8 M10 M12

Pozi Pan Machine Screws ISO 7045 (DIN 7985Z)

A Machine screw with a pozi drive, designed to be tightened with a screwdriver. Typically found on consumer electronics and other small machinery where high torque fasteners are not necessary. Conforms with ISO 7045 or DIN 7985.

M2.5 M3 M4 M5 M6 M8 M10 M12

Slotted Cheese Head Machine Screws ISO 1207 (DIN 84)

A machine screw with a traditional slot drive and a flat topped near cylindrical shaped head. Manufactured to ISO 1207 or DIN 84.

M2.5 M3 M4 M5 M6 M8 M10 M12

Socket Head Countersunk Screws ISO 10642 (DIN 7991)

A countersunk headed screw conforming with ISO 10642 or DIN 7991, requiring a hex key (otherwise known as an Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. The head diameter is slightly larger than that of the equivalent DIN 965 Phillips or Pozi driven screw.

M2.5 M3 M4 M5 M6 M8 M10 M12

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