UNC, 1/4", Hex-Bolt and Hex-Set Screw (8.8), Self-Colour.

UNC, 1/4", Fully Threaded Hex-Sets and Shouldered Bolts, High Tensile (S/ 8.8), Self-Colour. UNC 1/4" has 20 T. P. I (Threads Per Inch) Fixaball sells all lengths of UNC, 1/4", Hex Bolts...
£1.49

UNC, 1/4", Fully Threaded Hex-Sets and Shouldered Bolts, High Tensile (S/ 8.8), Self-Colour.

UNC 1/4" has 20 T. P. I (Threads Per Inch)

Fixaball sells all lengths of UNC, 1/4", Hex Bolts and Hex-Sets at the best internet prices with free, first class delivery.

Orders placed before 2pm are usually dispatched same day (Mon-Fri).

Availaball Lengths In Stock:

FIXABALL.CO.UK – Specialist Fixings and Fasteners Suppliers

UNC 1/4” Hex Bolts and Hex Sets

Length

Type of Fastener

Threads Per Inch

(T.P.I)

½”

Hex Set (FT)

20 T.P.I

5/8”

Hex Set (FT)

1”

Hex Set (FT)

1.1/4”

Hex Bolt (PT)

1.1/2”

Hex Bolt (PT)

1.3/4”

Hex Bolt (PT)

2”

Hex Bolt (PT)

2.1/4”

Hex Bolt (PT)

2.1/2

Hex Bolt (PT)

3.1/4”

Hex Bolt (PT)

3.1/2”

Hex Bolt (PT)

4”

Hex Bolt (PT)

4.1/2”

Hex Bolt (PT)

5”

Hex Bolt (PT)

6”

Hex Bolt (PT)

Please make your size and pack quantity selection from the drop down menus at the top of the page.

Bolt vs Set

A Hex Bolt (Shoulder 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. 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!

Table to show the different listing sizes. Please make inquiries for special sizes.

UNC ½” Sizes (13 TPI)

7 1/2"

7"

6 1/2"

6"

5 1/2"

5"

4 1/2"

4"

3 1/2"

3 1/4"

2 1/2"

2 1/4"

2”

1 1/2"

1 1/4"

¾”

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.

  

Please choose from the following for technical and/ or sales enquiries.

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  • Call: 01242 522244
  • Email: sam@fixaball.co.uk