UNC, 5/8", Socket Screw, Cap Head, High Tensile/ 12.9, Self Colour, ISO 4762, DIN 912, BS 2470.

UNC, 5/8" (11 T.P.I.), Coarse Pitch, High Tensile (Grade 'S'/ 12.9), Self Colour DIN 912. Allen (hex) Socket, Cap Head, Allen Bolt, ISO 4762, BS 2470

Fixaball sells all lengths of 5/8", UNC, cap-screws at the best internet prices with free delivery (Royal Mail 2nd Class). Postage upgrades available at checkout.

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UNC, 5/8" Allen Socket, Cap Head Screw/ Bolt lengths at Fixaball:

Allen/ Hexagon Socket, Cap Head Screw/ Bolts

Socket Screw is short for, 'Allen Socket Screw' or 'Hexagan Socket Screw' and is a generic term including the 'bolt' version. The, ‘Screw', term is used to describe a fastener that is fully threaded in lengths up to and around (depending on the gauge/ diameter) 1 inch (from the underside of the head). Over, around 1 inch in length the fastener will have a, 'shoulder,' or unthreaded, plain shank under the head. This space of unthreaded area confirms that the fastener is now a bolt (cap head, bolt in the case of this listing). A little confusing, no? Some engineers may call them screws if the person only uses the shorter length range of sizes, under an inch or so. Some people might simply call them, 'Allen bolts,' if they've never seen it written down in association with the Allen, Hexagonal Key. So, ‘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. The 'Cap' refers to the head which houses the hexagon socket.

High Tensile – 12.9 Grade.

Available Materials: Plain/ Black/ Self Colour 

UNC - UNF Capscrew Dimensions

UNIFIED THREAD STANDARDS 

The basic American standards for fastening screw threads as agreed upon by standard bodies of Canada, the United Kingdom, and the United States. They are a complete and integrated system of threads for fastening purposes. Their outstanding characteristic is general interchangeability of threads achieved through the standardization of thread form, diameter-pitch combinations, and limits of size

Unified National Coarse (UNC) is a thread form with a 60 degree flank angle rounded roots and flat crests. For a given diameter it has a larger thread pitch than an equivalent diameter UNF thread. The unified thread is based on inch sizes and was first standardised in 1948 unifying the Whitworth and American standard thread forms.

Unified National Fine (UNF) is a thread form with a 60 degree flank angle rounded roots and flat crests. For a given diameter it has a smaller thread pitch than an equivalent diameter UNC thread.

Unified National Extra Fine (UNEF) is a Unified thread form with a very fine (small) pitch that are typically used on instruments and parts requiring a fine adjustment.

Unified National (UN) thread form with a rounded root contour, applies only to external threads. (The UN thread form has a flat, or optionally, a rounded root contour.) The majority of fasteners with a Unified thread form (UNC UNF) have a rounded root contour i.e. are UNR threads.

Image is for illustrative purposes only.