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This page lists our range of Whitworth (BSW) Thread High Tensile Steel Socket Cap screws.
We currently stock 1/8", 3/16" and 1/4" diameter in a choice of lengths but other diameters are also available- please e mail is with your requirements.

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 - the order form will retain the information until you are ready to submit your order.

Key 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 for each size are now also listed at the bottom of each size section.

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 prices include 20% VAT  Click here for details

Socket Cap Screws Whitworth (BSW) Threads - High Tensile Steel

Thread	Overall  Length Inches (mm)	Surface Finish	Socket size	Pack Qty	MF Ref	Price	You can enter/change the number of items on the order form
1/8" BSW
1/8" (1/8-40)	1/2" (12.7)	Black		5	MF-SC301W	£1.00
				25	MF-SC301W/25	£4.00
1/8" (1/8-40)	3/4" (19)	Black		5	MF-SC302W	£1.00
				25	MF-SC302W/25	£4.00
	Sorry - this item is currently out of stock
1/8" (1/8-40)	1" (25)	Black		5	MF-SC303W	£1.00
				25	MF-SC303W/25	£4.00
Driving Tools for 1/8" BSW 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
3/16" BSW
3/16" (3/16-24)	1/4" (6.35)	Black		5	MF-SC304W	£0.75
				25	MF-SC304W/25	£3.00
3/16" (3/16-24)	3/8"(9.5)	Black		5	MF-SC305W	£0.75
				25	MF-SC305W/25	£3.00
3/16" (3/16-24)	1/2"(12.7)	Black		5	MF-SC306W	£0.75
				25	MF-SC306W/25	£3.00
3/16" (3/16-24)	3/4"(19)	Black		5	MF-SC308W	£0.75
				25	MF-SC308W/25	£3.00
3/16" (3/16-24)	1"(25.4)	Black		5	MF-SC309W	£0.75
				25	MF-SC309W/25	£3.00
Driving Tools for 3/16" BSW Socket Cap Screws
4.0mm Hex/Allen Key					MF-HK-40	£0.60
4mm Hex/Ball Driver					MF-BD-40	£3.95
4mm T Handle Driver					MF-TH-40	£5.95
4mm Swivel Wrench					MF-BSHW4	£8.25
1/4" BSW
1/4" (1/4-20)	1/4" (6.35)	Black		5	MF-SC310W	£0.75
				25	MF-SC310W/25	£3.00
1/4" (1/4-20)	3/8" (9.5)	Black		5	MF-SC311W	£0.75
				25	MF-SC311W/25	£3.00
	Sorry - this item is temporarily out of stock
1/4" (1/4-20)	1/2"(12.7)	Black		5	MF-SC312W	£0.75
				25	MF-SC312W/25	£3.00
1/4" (1/4-20)	3/4" (19)	Black		5	MF-SC314W	£1.00
				25	MF-SC314W/25	£4.00
1/4" (1/4-20)	1" (25)	Black		5	MF-SC315W	£1.00
				25	MF-SC315W/25	£4.00
Driving Tools for 1/4" BSW 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

 

This page was last modified on : June 06, 2026

 

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