Socket Screws - Countersunk - UNF

A countersunk head is usually used when no part of the fastener head is required to be protruding above the level of the substrate. Countersunk heads can also be recessed and filled over if a hidden fixing is required. Usually abbreviated to CSK.

UNF (Unified National Fine)

UNF stands for Unified National Fine. It is a common imperial thread type with more threads per axial distance than its UNC equivalent.

Unified thread types (UNF and UNC) were introduced at the beginning of World War 2 to enable the interchangeability of machinery manufacturing between the USA, Canada and Great Britain. Still commonly found on a vast array of old machines and vehicles in the UK, UNF and UNC threads continue to be the standard thread in the USA and Canada.

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10 Items

Code Product Name Info Pack Size Price Qty
5/16 SKUFA20310075 5/16" UNF x 3/4" - Socket Screw Countersunk - A2 Stainless Steel - Pack of 5
5
£45.86 £55.03
5/16 SKUFA20310075
5/16" UNF x 3/4" - Socket Screw Countersunk - A2 Stainless Steel - Pack of 5
5
£45.86 £55.03
No10 UNF x 3/8 SKUFSC0100037 No10 UNF x 3/8" - Socket Screw Countersunk Grade 10.9 BS 2470 - Self Colour - Pack of 25
25
£14.63 £17.56
No10 UNF x 3/8 SKUFSC0100037
No10 UNF x 3/8" - Socket Screw Countersunk Grade 10.9 BS 2470 - Self Colour - Pack of 25
25
£14.63 £17.56
No10 UNF x 3/8 SKUFSC0100100 No10 UNF x 1" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 25
25
£24.81 £29.77
No10 UNF x 3/8 SKUFSC0100100
No10 UNF x 1" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 25
25
£24.81 £29.77
No10 UNF x 3/8 SKUFSC0100150 No10 UNF x 1 1/2" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 10
10
£26.94 £32.33
No10 UNF x 3/8 SKUFSC0100150
No10 UNF x 1 1/2" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 10
10
£26.94 £32.33
No10 UNF x 3/8 SKUFSC0250037 1/4" UNF x 3/8" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 25
25
£18.91 £22.69
No10 UNF x 3/8 SKUFSC0250037
1/4" UNF x 3/8" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 25
25
£18.91 £22.69
No10 UNF x 3/8 SKUFSC0250100 1/4" UNF x 1" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 25
25
£23.81 £28.57
No10 UNF x 3/8 SKUFSC0250100
1/4" UNF x 1" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 25
25
£23.81 £28.57
No10 UNF x 3/8 SKUFSC0310075 5/16" UNF x 3/4" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 10
10
£25.75 £30.90
No10 UNF x 3/8 SKUFSC0310075
5/16" UNF x 3/4" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 10
10
£25.75 £30.90
No10 UNF x 3/8 SKUFSC0500100 1/2" UNF x 1" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 5
5
£20.26 £24.31
No10 UNF x 3/8 SKUFSC0500100
1/2" UNF x 1" - Socket Screw Countersunk BS 2470 - Self Colour - Pack of 5
5
£20.26 £24.31
No10 UNF x 3/8 SKUFSC0620200 5/8" UNF x 2" - Socket Screw Countersunk BS 2470 - Self Colour
1
£15.15 £18.18
No10 UNF x 3/8 SKUFSC0620200
5/8" UNF x 2" - Socket Screw Countersunk BS 2470 - Self Colour
1
£15.15 £18.18
3/8 SKUFZP0370100 3/8" UNF x 1" - Socket Screw Countersunk BS 2470 - BZP - Pack of 25
25
£45.94 £55.13
3/8 SKUFZP0370100
3/8" UNF x 1" - Socket Screw Countersunk BS 2470 - BZP - Pack of 25
25
£45.94 £55.13
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10 Items