Description
UNF 7/16″ – 20tpi x 2.1/2″, High Tensile 8.8, Zinc plated, fully threaded heagon set screw
UNF 7/16″ has 20 T. P. I (Threads Per Inch)
Fixabal sells UNF 7/16″ Hexagon Sets (FT-Fully threaded Bolts).
Bolt vs Set
A HexBolt(Part Plain Shank Bolt)is the term used for apartially threadedfastener, with a hexagon head; designed to be used with a nut and washer. A HexSet (Screw Bolt)is the same, except it isfully threaded.
Bolt vs Set Screw
A screw screws into something, a bolt joinsseveral things together from both sides of materials joined. A screw is fully threaded from underneath the head and a bolt is partially threaded (has a part-plain shank/ shoulder). There are exceptions to the rules!
Orders placed before 2pm are dispatchedsame day (Mon-Fri) and free shipping is Royal Mail, 2nd Class (2-5 days). Postage upgrades available at checkout.
Please make your, ‘No. of Items in Pack‘, ‘Length‘ and, ‘Quantity‘ of packs selection from the drop down menus.
UNF 7/16″, 20 T. P. I (Threads Per Inch) Lengths Available:
| 7/16″-20×2 1/2″,(FT) HEXAGON BOLT GRADE 5 UNF MED. CARBON ZINC CR+3 |
UNIFIED THREAD STANDARDS
Thread standards agreed upon by standard bodies of Canada, the United Kingdom, and the United States.
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.
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.
