E Mail : info@modelfixings.com      Tel 0115 8548791     More Contact info     Search our site      New! - Part Number Index

Can't find what you are looking for ? - then please let us know by e mail  or give us a call and we'll do our best to help

UNC Button Heads

Home Up Miniature Cap Screws H.T Steel Cap Screws Stainless Steel Cap Screws UNC Cap Screws Stainless Steel UNC Cap Screws UNF Cap Screws Stainless Steel UNF Cap Screws BA Cap Screws BSW Cap Screws Cap Screw Boxed Kits HT Button heads Stainless Button Heads UNC Button Heads Stainless UNC Button Heads UNF Steel Button Heads HT Metric Countersunks Stainless Metric Countersunks UNC HT Countersunks Stainless UNC Countersunks UNF HT Countersunks

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

The lists below show our range of UNC HT 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 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.

We do not recommend the use of T handle drivers on socket button head screws below 8 UNC size due to the ease of inadvertent over-tightening with this style tool.

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 1/4-20
Head Dia 'D'* 3.9 5.2 6.4 7.8 9.0 10.8
Socket Size 'AF' 1.3 1.6 2.0 2.4 3.2 4.0
*Head dimensions are nominal and may vary marginally from batch to batch.

All prices include 20% VAT  Click here for details

Button Head Socket Screws

UNC Threads - High Tensile 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 3/16 4.76 5 MF-BH100 £0.85

25 MF-BH100/25 £3.60

               
2-56 1/4 6.35 5 MF-BH101 £0.85

25 MF-BH101/25 £3.60

               
2-56 3/8 9.5 5 MF-BH102 £0.85

25 MF-BH102/25 £3.60

               
2-56 1/2 12.7 5 MF-BH103 £0.85

25 MF-BH103/25 £3.60

               
2-56 3/4 19.05 5 MF-BH105 £1.15

25 MF-BH105/25 £4.60

               
Driving Tools for 2 - 56 UNC Socket Button Head Screws
               
1.3mm (0.05") Hex/Allen Key MF-HK-13 £0.60

0.05" Hex/Ball Driver MF-BD-60 £2.75

               
             
4 UNC              
             
4-40 1/4 6.35 5 MF-BH110 £0.85

25 MF-BH110/25 £3.60

               
4-40 3/8 9.5 5 MF-BH111 £0.85

25 MF-BH111/25 £3.60

               
4-40 1/2 12.7 5 MF-BH112 £0.85

25 MF-BH112/25 £3.60

               
4-40 3/4 19.05 5 MF-BH114 £1.15

25 MF-BH114/25 £4.60

               
4-40 1 25.4 5 MF-BH115 £1.15

25 MF-BH115/25 £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 1/4 6.35 5 MF-BH120 £0.85

25 MF-BH120/25 £3.60

               
6-32 3/8 9.5 5 MF-BH121 £0.85

25 MF-BH121/25 £3.60

               
6-32 1/2 12.7 5 MF-BH122 £0.85

25 MF-BH122/25 £3.60

               
6-32 5/8 15.9 5 MF-BH123 £0.85

25 MF-BH123/25 £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-BH131 £0.85

25 MF-BH131/25 £3.60

               
8-32 1/2 12.7 5 MF-BH132 £0.85

25 MF-BH132/25 £3.60

     
8-32 5/8 15.9 5 MF-BH133 £0.85

25 MF-BH133/25 £3.60

               
8-32 3/4 19.05 5 MF-BH135 £0.85

25 MF-BH135/25 £3.60

               
8-32 1 25.4 5 MF-BH136 £0.95

25 MF-BH136/25 £3.80

               
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 £2.75

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

               
               
10 UNC              
             
10-24 3/8 9.5 5 MF-BH141 £0.85

25 MF-BH141/25 £3.60

               
10-24  1/2 12.7 5 MF-BH142 £0.85

25 MF-BH142/25 £3.60

               
10-24 3/4 19.05 5 MF-BH144 £0.85

25 MF-BH144/25 £3.60

               
10-24  1 25.4 5 MF-BH145 £0.95

25 MF-BH145/25 £3.80

               
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 £3.15

               
               
1/4" UNC              
             
1/4-20 3/8 9.5 5 MF-BH147 £1.00

25 MF-BH147/25 £4.00

               
1/4-20 1/2 12.7 5 MF-BH148 £1.00

25 MF-BH148/25 £4.00

               
1/4-20 3/4 19.05 5 MF-BH149 £1.15

25 MF-BH149/25 £4.60

               
1/4-20 1 25.4 5 MF-BH150 £1.25

25 MF-BH150/25 £5.00

               
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 : September 12, 2019

 
Send mail to webmaster@modelfixings.com with questions or comments about this web site.
General & Sales Information: info@modelfixings.com

All Trademarks and Trade names acknowledged.

Privacy Policy

Model Fixings Ltd trading as Modelfixings.co.uk, Modelfixings.com, Modelbearings.co.uk

Registered in England and Wales, Company No 8887251. Vat No GB917415524

Modelfixings is registered and fully compliant with PCI DSS (Payment Card Industry Data Security Standard) requirements