UNF, 3/8", Hex Bolt/ Hex Set Screw, A2/ 304 Stainless Steel, DIN 931.

UNF 3/8", Hex Bolts and Hex Sets in A2/ 304 Stainless Steel, DIN 931 Fixaball sells all lengths of A2/ 304 Stainless Steel, 3/8" UNF Bolts (unthreaded shoulder) and Hex Set...
£1.81

UNF 3/8", Hex Bolts and Hex Sets in A2/ 304 Stainless Steel, DIN 931

Fixaball sells all lengths of A2/ 304 Stainless Steel, 3/8" UNF Bolts (unthreaded shoulder) and Hex Set Screws (fully threaded) at the best internet prices.

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. Packs weighing under 250grams are upgraded to 1st class as much as possible.

If the size you need isn't shown, please make inquires.

A2/ 304 Stainless Steel

A2, otherwise known as 304 Stainless Steel is the regular stainless standard. It can resist intermittent weathering without corroding and loosing it's metallic finish.

Bolt vs Set

A Hex Bolt is the term used for a partially threaded fastener, with a hexagon head; designed to be used with a nut and washer. A Hex Set (Screw Bolt) is the same, except it is fully threaded.

Bolt vs Screw

A screw screws into something, a bolt joins several things together from both sides of materials joined.  Both a screw and bolt's length is measured from the underside of the head to the end of the fastener.

 

 

Table to show the different listing sizes and if they are hex-sets or hex-bolts

Fixaball – Specialists in Fixings and Fasteners

UNC 3/8”” Sizes (24 TPI)

1"

Fully Threaded

1.1/2"

Partially Threaded

1.3/4"

Partially Threaded

3"

Partially Threaded

3.1/2”

Partially Threaded

 

UNIFIED THREAD STANDARDS 

Thread standards agreed upon by standard bodies of Canada, the United Kingdom, and the United States.  

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 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 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 (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.