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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)

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

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.

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.

	We also stock a range of nylon countersunk screws screws including some UNC sizes. These are listed in the nylon screw section. Click here to go to the relevant web page.
	For stainless steel and HT steel Metric and UNF countersunks, please use the buttons at the top of this page.

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

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	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	£2.75
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	£3.15
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
	Sorry - this item is temporarily out of stock
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 8-32 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	£3.35
4.0mm (5/32") T Handle Driver				MF-TH-532	£4.95

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

This page was last modified on : March 26, 2021

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