UNF 3/8" Socket Screw Countersunk High Tensile 10.9 DIN7991

UNF 3/8" (24 T.P.I.), Fine Pitch, High Tensile (Grade 10.9), Self Colour. Allen (hex) Socket, Countersunk Head, Allen Screw/ Bolt, ISO 10642, B18.3, BS 2470 Fixaball sells all lengths of 3/8", UNF, countersunk socket screw bolts. Hex/ Allen Socket Countersunk Screw/ Bolts Countersunk fasteners are designed to fit flush on the connecting surface when fully tightened. They are tightened and loosened with an allen/ hex key drive. How to measure a countersunk fixing/ fastener The length of a countersunk fixing/ fastener is always from tip to the top. 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. UNF, 3/8" Allen Socket, Countersunk Screw/ Bolt lengths at Fixaball: FT - Fully Threaded PT - Partially Threaded 3/8"-24x5/8",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x3/4",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x7/8",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x1",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x1 1/4",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x1 1/2",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x1 3/4",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x2",(FT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x2 1/4",(PT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x2 1/2",(PT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR 3/8"-24x3",(PT) SOCKET COUNTERSUNK HEAD SCREWS UNF ALLOY SELF COLOUR High Tensile – 10.9 Grade. Available Finish: Plain/ Black/ Self Colour Fixaball – Specialist Fixings and Fasteners UNC/ UNF Countersunk Socket Screw/ Bolt Diameters and T.P.I.'s Conforming to ISO 10642, B18.3, BS 2470 Thread Pitch (Threads Per Inch/ T.P.I.) Diameter UNC UNF No. 4 40 48 No. 5 40 44 No. 6 32 40 No. 8 32 36 No. 10 24 32 ¼ 20 28 5/16 18 24 3/8 16 24 7/16 14 20 ½ 13 20 5/8 11 18 ¾ 10 16 7/8 9 14 1 8 12 1.1/4 7 12 1.1/2 6 12 Self Colour, High Tensile 10.9 Material Properties Material/ Finish Appearance Level of Corrosion Resistance Typical Application High Tensile Steel (10.9) Self-Colour (black) Low, without further surface treatment · No exposure to moisture · Often Greased/ Oiled 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.