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UNC Cap Screws

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

On this page you will find our range of No 2, No 3, No 4, No 5,No 6, No 8, No 10  and 1/4" UNC socket cap screws.

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

i.e. 2-56 = No 2 size with 56 threads per inch
4-40 = No 4 size with 40 threads per inch

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

To go to our UNF range, please click here.

Looking for 0-80? This is a UNF size and listed 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

Many other sizes are available, so if the size you need is not listed then please e mail us for a quotation via the fixings enquiry page.

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 'Back' button on your browser, or the continue shopping button on the order form - the order form will retain the information until you are ready to submit your order.

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

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

All prices include 20% VAT  Click here for details

UNC 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 AF        
Inches mm Inches mm mm
                     
2-56 1/8 3.18 1/8 3.18 5 MF-SC220 £0.95

25 MF-SC220/25 £4.25

                     
2-56 3/16 4.76 3/16 4.76 5 MF-SC221 £0.95

25 MF-SC221/25 £4.25

                     
  2-56 1/4 6.35 1/4 6.35 5 MF-SC222 £0.95

25 MF-SC222/25 £4.25

                     
  2-56 3/8 9.53 3/8 9.53 5 MF-SC223 £0.95

25 MF-SC223/25 £4.25

                     
  2-56 1/2 12.7 1/2 12.7 5 MF-SC224 £0.95

25 MF-SC224/25 £4.25

                     
2-56 3/4 19 3/4 19 5 MF-SC225 £1.25

25 MF-SC225/25 £5.65

                     
2-56 1 25.4 3/4 19 5 MF-SC226 £1.90

25 MF-SC226/25 £8.55

                     
    Sorry - this item is temporarily out of stock  
2-56 1 1/4 32 1/2 12.7 2 MF-SC227 £1.90

10 MF-SC227/10 £8.55

                     
    Sorry - this item is temporarily out of stock  
2-56 1 1/2 38 1/2 12.7 2 MF-SC228 £1.90

10 MF-SC228/10 £8.55

   
  3-48 3/16 4.76 3/16 4.76 5 MF-SC271 £1.00

25 MF-SC271/25 £4.10

                     
  3-48 1/4 6.35 1/4 6.35 5 MF-SC272 £1.00

25 MF-SC272/25 £4.10

                     
  3-48 3/8 9.53 3/8 9.53 5 MF-SC273 £1.00

25 MF-SC273/25 £4.10

                     
  3-48 1/2 12.7 1/2 12.7 5 MF-SC274 £1.00

25 MF-SC274/25 £4.10

                     
  3-48 3/4 19 3/4 19 5 MF-SC275 £1.00

25 MF-SC275/25 £4.00

                     
  3-48 1 25.4 3/4 19 5 MF-SC276 £1.00

25 MF-SC276/25 £4.00

   
4-40 1/4 6.35 1/4 6.35 5 MF-SC230 £0.85

25 MF-SC230/25 £3.50

                     
  4-40 3/8 9.53 3/8 9.53 5 MF-SC231 £0.85

25 MF-SC231/25 £3.50

                     
(2mm A/F
Socket
Version)
4-40 3/8 9.53 3/8 9.53 5 MF-SC231SH £0.75

25 MF-SC231SH/25 £3.00

                     
4-40 1/2 12.7 1/2 12.7 5 MF-SC232 £0.85

25 MF-SC232/25 £3.50

                     
4-40 5/8 15.88 5/8 15.88 5 MF-SC233 £0.85

25 MF-SC233/25 £3.50

                     
4-40 3/4 19 3/4 19 5 MF-SC234 £0.85

25 MF-SC234/25 £3.50

                     
4-40 1 25.4 3/4 19 5 MF-SC235 £0.85

25 MF-SC235/25 £3.50

                     
(2mm A/F
Socket
Version)
4-40 1 25.4 1 25.4 5 MF-SC235SH £0.75

25 MF-SC235SH/25 £3.00

                     
4-40 1 1/4 31.8 1 25.4 5 MF-SC236 £0.85

25 MF-SC236/25 £3.50

                     
4-40 1 1/2 38.1 3/4 19 5 MF-SC237 £1.35

25 MF-SC237/25 £5.50

                     
4-40 1 3/4 44.5 3/4 19 2 MF-SC239 £1.00

10 MF-SC239/10 £4.00

                     
4-40 2 50.8 3/4 19 2 MF-SC238 £1.50

10 MF-SC238/10 £6.10

                   
  5-40 1/4 6.35 1/4 6.35 5 MF-SC260 £1.00

  5-40 3/8 9.53 3/8 9.53 5 MF-SC261 £1.20

  5-40 1/2 12.7 1/2 12.7 5 MF-SC262 £1.40

  5-40 5/8 15.9 5/8 15.9 5 MF-SC263 £1.40

  5-40 3/4 19 3/4 19 5 MF-SC264 £1.50

  5-40 1 25.4 1 25.4 5 MF-SC265 £1.60

  5-40 1 1/4 31.8 3/4 19 5 MF-SC266 £1.60

  5-40 1 1/2 38.1 3/4 19 5 MF-SC267 £1.70

  5-40 1 3/4 44.5 1 25.4 5 MF-SC268 £1.80

  5-40 2 50.8 3/4 19 5 MF-SC269 £1.80

                     
6-32 1/4 6.35 1/4 6.35 5 MF-SC240 £0.85

25 MF-SC240/25 £3.50

                     
  6-32 3/8 9.53 3/8 9.53 5 MF-SC241 £0.85

25 MF-SC241/25 £3.50

                     
  6-32 1/2 12.7 1/2 12.7 5 MF-SC242 £0.85

25 MF-SC242/25 £3.50

                     
6-32 5/8 15.88 5/8 15.88 5 MF-SC243 £0.85

25 MF-SC243/25 £3.50

                     
6-32 3/4 19 3/4 19 5 MF-SC244 £0.85

25 MF-SC244/25 £3.50

       
6-32 1 25.4 1 25.4 5 MF-SC245 £0.85

25 MF-SC245/25 £3.50

         
  6-32 1 1/4 31.8 7/8 22.2 5 MF-SC246 £1.00

25 MF-SC246/25 £4.00

  This size is now also available in stainless steel          
                     
6-32 1 1/2 38.1 7/8 22.2 5 MF-SC247 £1.15

25 MF-SC247/25 £4.50

                     
6-32 2 50.8 1 25.4 2 MF-SC248 £1.15

10 MF-SC248/10 £4.50

     
6-32 2 1/4 57.1 1 25.4 2 MF-SC249 £1.30

10 MF-SC249/10 £5.10

                   
6-32 2 1/2 63.5 1 25.4 2 MF-SC250 £1.55

10 MF-SC250/10 £6.60

     
6-32 3 76.2 1 25.4 2 MF-SC251 £1.90

10 MF-SC251/10 £7.50

                     
  8-32 1/2 12.7 1/2 12.7 5 MF-SC252 £0.85

  8-32 5/8 15.9 5/8 15.9 5 MF-SC253 £0.85

  8-32 3/4 19 3/4 19 5 MF-SC254 £0.85

  8-32 1 25.4 1 25.4 5 MF-SC255 £0.85

  8-32 1 1/4 31.8 1 25.4 5 MF-SC256 £0.85

  8-32 1 1/2 38 1 25.4 5 MF-SC257 £0.85

  8-32 2 50.8 1 25.4 5 MF-SC258 £1.40

  8-32 2 1/2 63.5 1 25.4 5 MF-SC259 £2.00

  8-32 3 76 1 25.4 5 MF-SC259-2 £2.25

                     
  10-24 1/2 12.7 1/2 12.7

5 MF-SC210 £0.85

  10-24 3/4 19 3/4 19 5 MF-SC211 £0.85

  10-24 1 25.4 1 25.4 5 MF-SC213 £0.85

  10-24 1 1/2 38.1 1 1/8 28.5 2 MF-SC215 £0.85

  10-24 2 50.8 1 1/8 28.5 2 MF-SC217 £1.00

                     
  1/4"-20 3/8 9.5 3/8 9.5 4 MF-SC286 £0.95

  1/4"-20 1/2 12.7 1/2 12.7 4 MF-SC287 £0.95

  1/4"-20 3/4 19 3/4 19 4 MF-SC289 £0.95

  1/4"-20 1 25.4 1 25.4 4 MF-SC291 £0.95

  1/4"-20 1 1/4 31.8 1 1/4 31.8 4 MF-SC292 £0.95

  1/4"-20 1 1/2 38.1 1 25.4 4 MF-SC293 £0.95

  1/4"-20 2 50.8 1 25.4 4 MF-SC295 £1.15

  1/4"-20 2 1/4 57.1 1 25.4 4 MF-SC296 £1.15

  1/4"-20 2 1/2 63.5 1 25.4 4 MF-SC297 £1.25

                     

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 :-

No 2 UNC use M2 washers

No 4 UNC use M3 washers

No 6 UNC use M4 washers

No 8 UNC use M4 washers

 

This page was last modified on : June 04, 2019

 
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