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UNF Cap Screws

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You are here - Home > Fixings > Socket Screws > UNF Steel Cap Screws
 

On this page you will find our current range of No 0, No 3, No 4, No5, No 6, No 8, No10 and 1/4 UNF socket cap screws.

UNF = Unified Fine thread

UNC and UNF threads are designated with a size ref followed by the threads per inch

i.e. 0-80 = No 0 size with 80 threads per inch
4-48 = No 4 size with 48 threads per inch

For more data on UNC, UNF and many other types of thread - please click here

Other sizes are available, so if the size you need is not listed then please e mail us for a quotation.

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

UNF screws are primarily sized in inches, but metric equivalents are given (to 2 decimal places).

 

To order, click on the 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.
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.
Tools and ancillary items for each size are also listed at the bottom of each size section.
All dimensions are in millimetres.
Please note that the overall shank length is the measurement from the underside of the head to the end of the screw shank.

 

Please scroll down this page to the thread size you require, or click on the links below
0 UNF
(0-80)		   3 UNF
(3-56)		   4 UNF
(4-48)		   5 UNF
(5-44)		   6 UNF
(6-40)		   8 UNF
(8-36)		   10 UNF
(10-32)		   1/4 UNF
(1/4-28)

All prices include 20% VAT  Click here for details

UNF Socket Cap Screws

High Tensile Steel.    Black Finish
Thread

Overall Length 

Thread Length
(Approx)

Socket
size 

 Pack
Qty

MF Ref

 Pack
Price

You can enter/change the number of items on the order form
L TL A/F
Inches mm Inches mm mm
0 UNF                  
               
0-80 1/8 3.18 1/8 3.18 5 MF-SC220F £1.00

0-80 3/16 4.76 3/16 4.76 5 MF-SC221F £1.00

  Sorry, this item is currently out of stock    
0-80 1/4 6.35 1/4 6.35 5 MF-SC222F £1.00

0-80 3/8 9.5 3/8 9.5 5 MF-SC223F £1.10

0-80 1/2 12.7 1/2 12.7 5 MF-SC224F £1.20

0-80 3/4 19 3/4 19 5 MF-SC225F £1.50

 
Driving Tools for 0 - 80 UNF Socket Cap Screws
1.27mm (0.05") Hex/Allen Key   MF-HK-13 £0.60

1.27mm Hex/Ball Driver   MF-BD-13 £2.75

                   
3 UNF                  
               
3-56 1/4 6.35 1/4 6.35 5 MF-SC272F £1.00

3-56 3/8 9.5 3/8 9.5 5 MF-SC273F £1.00

3-56 1/2 12.7 1/2 12.7 5 MF-SC274F £1.00

3-56 3/4 19 3/4 19 5 MF-SC275F £1.00

                   
Driving Tools for 3 - 56 UNF Socket Cap Screws
2.0mm Hex/Allen Key   MF-HK-20 £0.50

2mm Hex/Ball Driver   MF-BD-20 £2.75

2mm T Handle Driver   MF-TH-20 £4.95

                   
4 UNF                  
               
4-48 1/2 12.7 1/2 12.7 5 MF-SC232F £1.00

4-48 5/8 15.9 5/8 15.9 5 MF-SC233F £1.00

4-48 3/4 19 3/4 19 5 MF-SC234F £1.00

 
Driving Tools for 4 - 48 UNF Socket Cap 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

                   
5 UNF                  
               
5-44 1/4 6.35 1/4 6.35 5 MF-SC260F £1.00

5-44 1/2 12.7 1/2 12.7 5 MF-SC262F £1.00

5-44 3/4 19 3/4 19 5 MF-SC264F £1.00

5-44 1 25.4 3/4 19 5 MF-SC265F £1.00

Driving Tools for 5 - 44 UNF Socket Cap 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

                   
6 UNF                  
               
6-40 3/8 9.5 3/8 9.5 5 MF-SC241F £1.20

6-40 1/2 12.7 1/2 12.7 5 MF-SC242F £1.00

6-40 5/8 15.9 5/8 15.9 5 MF-SC243F £1.00

6-40 3/4 19 3/4 19 5 MF-SC244F £1.00

6-40 1 25.4 1 25.4 5 MF-SC245F £1.00

 
Driving Tools for 6 - 40 UNF Socket Cap Screws
2.8mm (7/64") Hex/Allen Key   MF-HK-28 £0.60

2.8mm (7/64") Hex/Ball Driver   MF-BD-68 £3.45

2.8mm (7/64") T Handle Driver   MF-TH-764 £4.95

                   
8 UNF                  
               
8-36 1/4 6.35 1/4 6.35 5 MF-SC251F £1.00

8-36 3/8 9.5 3/8 9.5 5 MF-SC252F £1.00

8-36 1/2 12.7 1/2 12.7 5 MF-SC253F £1.00

8-36 5/8 15.9 5/8 15.9 5 MF-SC258F £1.00

8-36 3/4 19 3/4 19 5 MF-SC259F £1.00

8-36 1 25.4 1 25.4 5 MF-SC255F £1.00

Driving Tools for 8 - 36 UNF Socket Cap Screws
3.6mm (9/64") Hex/Allen Key   MF-HK-36 £0.60

3.6mm (9/64") Hex/Ball Driver   MF-BD-70 £3.45

3.6mm (9/64") T Handle Driver   MF-TH-964 £4.95

                   
10 UNF                  
               
10-32 1/2 12.7 1/2 12.7 5 MF-SC210F £1.00

10-32 5/8 15.9 5/8 15.9 5 MF-SC211F £1.00

10-32 3/4 19 3/4 19 5 MF-SC212F £1.00

10-32 1 25.4 1 25.4 5 MF-SC213F £1.00

10-32 1 1/4 31.8 1 25.4 5 MF-SC214F £1.00

10-32 1 1/2 38.1 1 25.4 5 MF-SC215F £1.00

10-32 1 3/4 38.1 1 25.4 5 MF-SC216F £1.50

10-32 2 50.8 1 25.4 2 MF-SC217F £1.00

10-32 2 1/2 63.5 1 25.4 2 MF-SC219F £1.00

                 
Driving Tools for 10 - 32 UNF Socket Cap Screws
4mm (5/32") Hex/Allen Key   MF-HK-40 £0.60

4mm (5/32") Hex/Ball Driver   MF-BD-72 £3.65

4mm (5/32) T Handle Driver   MF-TH-532 £4.95

4mm Swivel Wrench   MF-BSHW4 £8.25

                   
1/4" UNF                  
               
1/4"-28 3/4 19 3/4 19 4 MF-SC289F £0.95

1/4"-28 1 25.4 1 25.4 4 MF-SC291F £0.95

1/4"-28 1 1/4 31.8 1 1/4 31.8 4 MF-SC292F £0.95

1/4"-28 1 1/2 38.1 1 25.4 4 MF-SC293F £0.95

1/4"-28 2 50.8 1 25.4 4 MF-SC295F £1.15

                   
Driving Tools for 1/4 - 28 UNF Socket Cap Screws
4.75mm (3/16") Hex/Allen Key   MF-HK-475 £0.60

4.75mm (3/16") T Handle Driver   MF-TH-316 £5.65

                   
                   

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

 

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