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Stainless UNC Button Heads

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You are here - Home > Fixings > Socket Screws > UNC Stainless Steel Button Head Screws
 

The lists below show our range of UNC Stainless Steel Button Head socket screws.

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.

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

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

We also stock button head screws in UNC HT Steel, Metric HT Steel and stainless steel - please use the buttons above to go to these pages.

Button heads have a smaller socket size and shallower depth socket than the equivalent sized cap screw and so more care should be taken not to over-torque, especially on the very small sizes, to avoid rounding of the socket edges.
It's also crucial to ensure that your hex key of driver is completely inserted before applying significant torque.
If your application is for a high torque connection or the screws will be regularly removed and re-used, we would suggest that a socket cap screw is considered.

UNC Button Head Dimensions 'D' & 'AF' in mm (see dimension drawing below)
Thread 2-56 4-40 6-32 8-32 10-24
Head Dia 'D'* 3.9 5.2 6.4 7.8 9.0
Socket Size 'AF' 1.27 1.6 2.0 2.4 3.2
*Head dimensions are nominal and may vary marginally from batch to batch.
 
Please scroll down this page to the thread size you require,
or click on the links below
2 UNC
(2-56)		   4 UNC
(4-40)		   6 UNC
(6-32)		   8 UNC
(8-32)		   10 UNC
(10-24)		   1/4 UNC
(1/4-20)

All prices include 20% VAT  Click here for details

Button Head Socket Screws

UNC Threads - A2 Stainless Steel 
Thread

Length L*

 Socket size Pack Qty

MF Ref

 Price You can enter/change the number of items on the order form
  Inches mm AF        
               
2 UNC              
           
2-56 1/4 6.35 5 MF-BH101S £0.85

25 MF-BH101S/25 £3.60

               
2-56 3/8 9.5 5 MF-BH102S £0.85

25 MF-BH102S/25 £3.60

               
2-56 1/2 12.7 5 MF-BH103S £0.85

25 MF-BH103S/25 £3.60

               
2-56 3/4 19.05 5 MF-BH105S £1.15

25 MF-BH105S/25 £4.60

               
Driving Tools for 2 - 56 UNC Socket Button Head 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 6.35 5 MF-BH110S £1.00

25 MF-BH110S/25 £4.50

               
4-40 3/8 9.5 5 MF-BH111S £1.00

25 MF-BH111S/25 £4.50

               
4-40 1/2 12.7 5 MF-BH112S £1.00

25 MF-BH112S/25 £4.50

               
4-40 3/4 19.05 5 MF-BH114S £1.15

25 MF-BH114S/25 £4.60

               
4-40 1 25.4 5 MF-BH115S £1.15

25 MF-BH115S/25 £4.60

               
Driving Tools for 4 - 40 UNC Socket Button Head 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 3/16 4.75 5 MF-BH119S £0.85

25 MF-BH119S/25 £3.60

               
6-32 1/4 6.35 5 MF-BH120S £0.85

25 MF-BH120S/25 £3.60

               
6-32 3/8 9.5 5 MF-BH121S £0.85

25 MF-BH121S/25 £3.60

     
6-32 1/2 12.7 5 MF-BH122S £0.85

25 MF-BH122S/25 £3.60

               
6-32 5/8 15.9 5 MF-BH123S £0.85

25 MF-BH123S/25 £3.60

             
6-32 3/4 19 5 MF-BH124S £0.85

25 MF-BH124S/25 £3.60

               
6-32 1 25.4 5 MF-BH125S £0.85

25 MF-BH125S/25 £3.60

               
Driving Tools for 6 - 32 UNC Socket Button Head 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 9.5 5 MF-BH131S £0.85

25 MF-BH131S/25 £3.60

     
8-32 1/2 12.7 5 MF-BH132S £0.85

25 MF-BH132S/25 £3.60

     
8-32 5/8 15.9 5 MF-BH133S £0.85

25 MF-BH133S/25 £3.60

               
8-32 3/4 19.05 5 MF-BH135S £0.85

25 MF-BH135S/25 £3.60

               
Driving Tools for 8 - 32 UNC Socket Button Head 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 9.5 5 MF-BH141S £0.85

25 MF-BH141S/25 £3.60

               
10-24 1/2 12.7 5 MF-BH142S £0.85

25 MF-BH142S/25 £3.60

               
10-24 3/4 19.05 5 MF-BH144S £0.85

25 MF-BH144S/25 £3.60

               
10-24 1 25.4 5 MF-BH145S £0.85

25 MF-BH145S/25 £3.60

               
Driving Tools for 10 - 24 UNC Socket Button Head 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 9.5 5 MF-BH147S £0.85

25 MF-BH147S/25 £3.60

               
  Sorry - this item is temporarily out of stock  
1/4 - 20 1/2 12.7 5 MF-BH148S £0.85

25 MF-BH148S/25 £3.60

               
1/4 - 20 3/4 19.05 5 MF-BH149S £0.85

25 MF-BH149S/25 £3.60

               
1/4 - 20 1 25.4 5 MF-BH150S £0.85

25 MF-BH150S/25 £3.60

               
Driving Tools for 8 - 32 UNC Socket Button Head Screws
               
4.0mm Hex/Allen Key MF-HK-40 £0.60

4.0mm Hex/Ball Driver MF-BD-40 £3.45

4.0mm T Handle Driver MF-TH-40 £5.95

4mm Swivel Wrench MF-BSHW4 £7.40

               
               

* Metric dimensions have been converted from inch dimensions
 

This page was last modified on : October 12, 2023

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