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UNC HT Countersunks

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You are here - Home > Fixings > Socket Screws > UNC HT Steel Countersunk Screws
   
 

This page lists our range of High Tensile* UNC Countersunk (sometimes called 'flat head') Screws with socket heads. 

*Some sizes also available and indicated below in stainless steel

We stock various lengths in 2-56, 4-40, 6-32 and 8-32 thread (2, 4, 6 and 8 UNC)
And now more rare sizes in 3-48 and 5-40 (3 and 5 UNC)

All our UNC socket drive countersunk screws are 82 degree head angle
We do now stock an example of 100 degree head in 8UNC x 1/2 Torx drive listed below

To order, click on the 'Add to Order' button alongside the item of your choice. You can select the quantity on the order form (default is 1).
To continue ordering other items, use the 'Continue Shopping' button on the order form.

You can review and edit your order, or submit your order at any time by using the button at the bottom of each list.

All dimensions are inches

For a guide to suitable washers, please scroll to the bottom of the page or click here

Socket sizes are stated in millimetres (imperial sizes have been converted to metric). If you need a key, click on the symbol in the tables below and you will be taken to the allen key and ball driver page.

Alternatively,

Please click here

Note that the length of countersunk screws is the length including the screw head and all our UNC countersunk screws are fully threaded.

Many more sizes are available - if the size you require isn't listed please e mail us for a no-obligation quotation.

For thread data, click here  (this will open in a new browser window)

Please scroll down this page to the thread size you require, or click on the links below
2 UNC
(2-56)		   3 UNC
(3-48)		   4 UNC
(4-40)		   5 UNC
(5-40)		   6 UNC
(6-32)		   8 UNC
(8-32)		   10 UNC
(10-24)		   1/4 UNC
(1/4-20)

The links below take you to our other countersunk socket screws listed on other pages
  Metric
Steel		   Metric
Stainless		   Metric
Nylon		   UNC
Stainless		   UNF
Steel		  

All prices include 20% VAT  Click here for details

Countersunk Socket Screws 

UNC - High Tensile Steel    Black finish 
Thread

Length
L
(inches)

 Socket
Size
(A/F)		 Pack
Qty

MF Ref

 Price

You can enter/change the number of items on the order form
             
2UNC            
         
2-56  3/16 5 MF-CS100 £0.85

25 MF-CS100/25 £3.60

             
2-56  1/4 5 MF-CS101 £0.85

25 MF-CS101/25 £3.60

             
2-56 3/8 5 MF-CS102 £0.85

25 MF-CS102/25 £3.60

             
2-56 1/2 5 MF-CS103 £0.85

25 MF-CS103/25 £3.60

Driving Tools for 2-56 UNC Socket Countersunk Screws
1.27mm (0.05") Hex/Allen Key MF-HK-13 £0.60

1.27mm Hex/Ball Driver MF-BD-13 £2.75

           
3 UNC            
         
3-48  3/16 5 MF-CS105 £0.85

25 MF-CS105/25 £3.60

             
3-48 1/4 5 MF-CS106 £0.85

25 MF-CS106/25 £3.60

Driving Tools for 3-48 UNC Socket Countersunk Screws
1.27mm (0.05") Hex/Allen Key MF-HK-13 £0.60

1.27mm Hex/Ball Driver MF-BD-13 £2.75

           
4 UNC            
         
4 -40 1/4 5 MF-CS110 £0.85

25 MF-CS110/25 £3.60

             
4-40 3/8 5 MF-CS111 £0.85

25 MF-CS111/25 £3.60

             
4-40 1/2 5 MF-CS112 £0.85

25 MF-CS112/25 £3.60

             
4-40
(4 UNC)		 3/4 5 MF-CS114 £0.85

25 MF-CS114/25 £3.60

             
4 -40 1 5 MF-CS115 £0.85

25 MF-CS115/25 £3.60

Driving Tools for 4-40 UNC Socket Countersunk Screws
1.6mm (1/16") Hex/Allen Key MF-HK-16 £0.60

1/16" Hex/Ball Driver MF-BD-62 £2.75

           
5 UNC            
         
5-40 1/4 5 MF-CS116 £0.85

25 MF-CS116/25 £3.60

             
5-40 3/8 5 MF-CS117 £0.85

25 MF-CS117/25 £3.60

             
5-40 1/2 5 MF-CS118 £0.85

25 MF-CS118/25 £3.60

             
5-40 3/4 5 MF-CS119 £0.85

25 MF-CS119/25 £3.60

Driving Tools for 5-40 UNC Socket Countersunk Screws
1.6mm (1/16") Hex/Allen Key MF-HK-16 £0.60

1/16" Hex/Ball Driver MF-BD-62 £2.75

           
6 UNC            
         
6-32 1/4 5 MF-CS120 £0.85

25 MF-CS120/25 £3.60

             
6-32 3/8 5 MF-CS121 £0.85

25 MF-CS121/25 £3.60

             
6-32 1/2 5 MF-CS122 £0.85

25 MF-CS122/25 £3.60

             
6-32 5/8 5 MF-CS123 £0.85

25 MF-CS123/25 £3.60

             
6-32 3/4 5 MF-CS124 £0.85

25 MF-CS124/25 £3.60

             
6-32 1 5 MF-CS125 £1.15

25 MF-CS125/25 £4.60

             
6-32 1 1/2 5 MF-CS127 £1.15

25 MF-CS127/25 £4.60

Driving Tools for 6-32 UNC Socket Countersunk Screws
2.0mm Hex/Allen Key MF-HK-20 £0.50

2.0mm Hex/Ball Driver MF-BD-20 £2.75

           
8 UNC            
         
8-32 3/8 5 MF-CS131 £0.85

25 MF-CS131/25 £3.60

             
8-32 1/2 5 MF-CS132 £0.85

25 MF-CS132/25 £3.60

             
8-32
100 degree head with 6 lobe Torx drive.
Stainless Steel		 1/2 5 MF-CS132TS £1.25

25 MF-CS132TS/25 £5.65

             
8-32 3/4 5 MF-CS133 £0.85

25 MF-CS133/25 £3.60

             
8-32 1 5 MF-CS134 £0.85

25 MF-CS134/25 £3.60

Driving Tools for 8-32 UNC Socket Countersunk Screws
2.4mm (3/32) Hex/Allen Key MF-HK-24 £0.60

2.4mm (3/32") Hex/Ball Driver MF-BD-66 £3.25

2.4mm (3/32") T Handle Driver MF-TH-332 £4.95

           
10 UNC            
         
10-24 3/8 5 MF-CS141 £0.85

25 MF-CS141/25 £3.60

             
10-24 1/2 5 MF-CS142 £0.85

25 MF-CS142/25 £3.60

             
10-24 3/4 5 MF-CS143 £0.85

25 MF-CS143/25 £3.60

             
10-24 1 5 MF-CS144 £0.85

25 MF-CS144/25 £3.60

             
10-24 1 1/4 5 MF-CS145 £1.25

25 MF-CS145/25 £5.30

             
10-24 1 1/2 5 MF-CS146 £1.50

25 MF-CS146/25 £6.35

Driving Tools for 10-24 UNC Socket Countersunk Screws
3.2mm (1/8") Hex/Allen Key MF-HK-32 £0.60

3.2mm (1/8") Hex/Ball Driver MF-BD-69 £3.45

           
1/4 UNC            
         
1/4-20 3/8 5 MF-CS151 £1.00

25 MF-CS151/25 £4.25

             
1/4-20 1/2 5 MF-CS152 £1.00

25 MF-CS152/25 £4.25

             
1/4-20 3/4 5 MF-CS154 £1.00

25 MF-CS154/25 £4.25

             
1/4-20 1 5 MF-CS156 £1.00

25 MF-CS156/25 £4.25

             
1/4-20 1 1/4 5 MF-CS157 £1.25

25 MF-CS157/25 £5.30

Driving Tools for 1/4-20 UNC Socket Countersunk Screws
4.0mm (5/32") Hex/Allen Key MF-HK-40 £0.60

4.0mm (5/32") Hex/Ball Driver MF-BD-72 £3.65

4.0mm (5/32") T Handle Driver MF-TH-532 £4.95

             

 

 

For UNC nuts - click here

For flat and spring washers - click here

We do not stock specific UNC washers, but the following metric equivalents can be used for general applications :-

UNC / UNF Screw size 2 3 4 5 6 8 10 1/4
Suitable Metric Washer Size M2 M2.5 M3 M3 M3.5 M4 M5 M6

 

If the size you require isn't listed please e mail us for a no-obligation quotation.

This page was last modified on : October 12, 2023

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