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This page lists our current range of Metric High Tensile (Grade 12.9) Carbon Steel Socket Cap Screws from M3 to M6.
For smaller diameters (M1.6, M2, M2.5 and M2.6) please go to our miniature cap screw page.

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 also listed at the bottom of each size section.

To order, click on the 'Add to Order' button alongside the item of your choice. You can select the number of packs 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.

Longer sizes can be ordered complete with nuts - this will include 1 x Nyloc nut and 2 flat washers per cap screw. The nuts and washers are supplied in BZP (Bright Zinc Plated) finished steel
which are silver in colour. If you prefer black nuts and washers then please order the screws only on this page  and black nuts and washers seperately.

Boxed Kits We can now offer boxed kits of our most popular M2, M2.5, M3, M4 and M5 HT (black) and Stainless Steel cap screws. Please click on the image to go to the boxed kits page

All prices include 20% VAT  Click here for details

Socket Cap Screws Metric Threads - High Tensile Steel grade 12.9. Black finish ISO 4762 / Din 912

M3	Please scroll down to the bottom of this M3 section for related ancillaries and tools
Thread	Overall  Length (mm)	Thread Length (mm)	Socket Size A/F	Pack Qty	MF Ref	Price Screws Only	Price With Nuts & washers	You can change the number of packs on the order form
	L	TL
	Where L and TL values are equal, the shank is fully threaded
M3	4	4		10	MF-SC77	£0.85
				50	MF-SC77/50	£3.80
M3	5	5		10	MF-SC88	£0.85
				50	MF-SC88/50	£3.80
M3	6	6		10	MF-SC01	£0.85
				50	MF-SC01/50	£3.80
M3	8	8		10	MF-SC02	£0.85
				50	MF-SC02/50	£3.80
M3	10	10		10	MF-SC11	£0.85
				50	MF-SC11/50	£3.80
	Sorry - this item is currently unavailable
M3	10	10		5	MF-SC11F	£2.20
'Fine' thread (0.6mm)
M3	12	12		10	MF-SC03	£0.85
				50	MF-SC03/50	£3.80
	Sorry - this item is currently unavailable
M3	12	12		5	MF-SC03F	£2.20
'Fine' thread (0.6mm)
M3	14	14		10	MF-SC28	£1.30
				50	MF-SC28/50	£5.85
M3	15	15		10	MF-SC89	£1.30
				50	MF-SC89/50	£5.85
M3	16	16		10	MF-SC12	£0.90
				50	MF-SC12/50	£4.05
M3	18	18		10	MF-SC41	£1.10
				50	MF-SC41/50	£4.95
M3	20	20		10	MF-SC04	£1.00	£1.35
				50	MF-SC04/50	£4.50
M3	22	22		10	MF-SC83	£1.00	£1.35
				50	MF-SC83/50	£4.50
M3	25	18		10	MF-SC16	£1.25	£1.60
				50	MF-SC16/50	£5.60
M3	30	18		5	MF-SC08	£0.75	£0.90
				25	MF-SC08/25	£3.35
M3	35	18		5	MF-SC14	£0.85	£1.00
				25	MF-SC14/25	£3.80
M3	40	18		5	MF-SC05	£1.00	£1.15
				25	MF-SC05/25	£4.50
M3	40	18		5	MF-SC05ZP	£0.85
Bright Zinc Plated Finish				25	MF-SC05ZP/25	£3.80
M3	50	18		5	MF-SC24	£1.80	£1.95
				25	MF-SC24/25	£8.10
M3	60	18		5	MF-SC26	£2.50	£2.65
				25	MF-SC26/25	£11.25
New & rare Size		18		2	MF-SC84	£4.50	£4.55
M3	80			10	MF-SC84/10	£20.25
Driving Tools for M3 Socket Cap Screws
2.5mm Hex/Allen Key				1	MF-HK-25	£0.50
2.5mm Hex/Ball Driver				1	MF-BD-25	£2.75
2.5mm T Handle Driver				1	MF-TH-25	£4.95

Popular ancillary items often ordered with M2 Steel Socket Cap Screws

Description

Pack Qty

Pack Price

Description

Pack Qty

Pack Price

M3 Steel BZP Hex Nuts

10

£0.60

M3 BZP Steel Flat Washers

20

£0.60

M3 Steel BZP Nyloc Nuts

10

£0.80

M3 BZP Steel Spring Washers

20

£0.50

To see our full range of nuts and/or order larger quantities, please click here

To see our full range of washers and/or order larger quantities, please click here

M3.5	Please scroll down to the bottom of this M3.5 section for related ancillaries and tools
Thread	Overall  Length (mm)	Thread Length (mm)	Socket Size A/F	Pack Qty	MF Ref	Price Screws Only		You can change the number of packs on the order form
	L	TL
	Where L and TL values are equal, the shank is fully threaded
M3.5	8	8		5	MF-SC27	£2.00
M3.5	12	12		5	MF-SC35	£2.00
M3.5	16	16		5	MF-SC30	£2.25
M3.5	20	20	**	5	MF-SC31	£2.50
Sorry - this item is currently unavailable
M3.5	25	25		5	MF-SC32	£2.50
Sorry - this item is currently unavailable
M3.5	30	30		5	MF-SC33	£2.50
M3.5	50	30	**	5	MF-SC36	£3.50
M3.5 is a rare thread form in cap screw form and so available lengths and stock can be limited. If you are looking for M3.5 cap screws for use in clearance holes together with M3.5 nuts, you may want to consider No 6 UNC. The diameter is only nominally 0.005mm larger (1/5th of 1 thousandth of an inch) than metric M3.5 and the choice of lengths is wider. Our UNC HT cap screws are listed here *Please note that the 20mm & 50mm long M3.5 cap screws require a 2.8mm (7/64") key
Driving Tools for M3.5 Socket Cap Screws with 2.5mm A/F socket (8, 12, 16, 25 & 30mm lg)
2.5mm Hex/Allen Key				1	MF-HK-25	£0.50
2.5mm Hex/Ball Driver				1	MF-BD-25	£2.75
2.5mm T Handle Driver				1	MF-TH-25	£4.95
Driving Tools for M3.5 Socket Cap Screws with 2.8mm (7/64") A/F socket (20 & 50mm lg)
2.8mm (7/64") Hex Key				1	MF-HK-28	£0.60
7/64" Hex/Ball Driver				1	MF-BD-68	£3.45
7/64" T Handle Driver				1	MF-TH-764	£4.95

Popular ancillary items often ordered with M3.5 Steel Socket Cap Screws
	Description	Pack Qty	Pack Price				Description	Pack Qty	Pack Price
	M3.5 Steel BZP Hex Nuts	10	£0.60				M3.5 S/Steel Flat Washers	20	£0.80
	M3.5 Steel BZP Nyloc Nuts	10	£3.25				M3.5 S/Steel Spring Washers	20	£0.50
To see our full range of nuts and/or order larger quantities, please click here						To see our full range of washers and/or order larger quantities, please click here

M4	Please scroll down to the bottom of this M4 section for related ancillaries and tools
Thread	Overall  Length (mm)	Thread Length (mm)	Socket Size A/F	Pack Qty	MF Ref	Price Screws Only	Price With Nuts & washers	You can change the number of packs on the order form
	L	TL
	Where L and TL values are equal, the shank is fully threaded
M4	6	6		10	MF-SC37	£0.85
				50	MF-SC37/50	£3.80
M4	8	8		10	MF-SC23	£0.85
				50	MF-SC23/50	£3.80
M4	10	10		10	MF-SC60	£0.85
				50	MF-SC60/50	£3.80
M4	12	12		10	MF-SC42	£0.85
				50	MF-SC42/50	£3.80
M4	14	14		10	MF-SC64	£1.20
				50	MF-SC64/50	£5.40
M4	16	16		10	MF-SC06	£1.20	£1.50
				50	MF-SC06/50	£5.40
M4	18	18		10	MF-SC38	£1.20	£1.50
				50	MF-SC38/50	£5.40
M4	20	20		10	MF-SC07	£1.20	£1.50
				50	MF-SC07/50	£5.40
M4	25	25		10	MF-SC19	£1.20	£1.50
				50	MF-SC19/50	£5.40
M4	30	20		5	MF-SC17	£0.85	£1.00
				25	MF-SC17/25	£3.80
M4	35	20		5	MF-SC53	£0.95	£1.10
				25	MF-SC53/25	£4.25
M4	40	20		5	MF-SC09	£1.05	£1.20
				25	MF-SC09/25	£4.70
M4	45	20		5	MF-SC45	£1.05	£1.20
				25	MF-SC45/25	£4.70
M4	50	20		5	MF-SC22	£1.20	£1.35
				25	MF-SC22/25	£5.40
M4	60	20		5	MF-SC10	£1.50	£1.80
				25	MF-SC10/25	£6.75
M4	70	20		2	MF-SC4070	£1.00	£1.10
				10	MF-SC4070/10	£4.50
M4	80	20		2	MF-SC04080	£1.20	£1.30
				10	MF-SC04080/10	£5.40
M4	90	20		2	MF-SC04090	£1.20	£1.30
				10	MF-SC04090/10	£5.40
M4	100	20		2	MF-SC04100	£1.50	£1.60
				10	MF-SC04100/10	£6.75
Driving Tools for M4 Socket Cap Screws
3mm Hex/Allen Key				1	MF-HK-30	£0.50
3mm Hex/Ball Driver				1	MF-BD-30	£2.95
3mm T Handle Driver				1	MF-TH-30	£4.95
3mm Swivel wrench				1	MF-BSHW3	£7.45

Popular ancillary items often ordered with M4 Steel Socket Cap Screws
	Description	Pack Qty	Pack Price				Description	Pack Qty	Pack Price
	M4 Steel BZP Hex Nuts	10	£0.60				M4 Steel BZP Flat Washers	20	£0.60
	M4 Steel BZP Nyloc Nuts	10	£0.80				M4 Steel BZP Spring Washers	20	£0.50
To see our full range of nuts and/or order larger quantities, please click here						To see our full range of washers and/or order larger quantities, please click here

M5	Please scroll down to the bottom of this M5 section for related ancillaries and tools
Thread	Overall  Length (mm)	Thread Length (mm)	Socket Size A/F	Pack Qty	MF Ref	Price Screws Only	Price With Nuts & washers	You can change the number of packs on the order form
	L	TL
	Where L and TL values are equal, the shank is fully threaded
M5	6	6		4	MF-SC68	£0.50
				20	MF-SC68/20	£2.25
M5	10	10		4	MF-SC69	£0.50
				20	MF-SC69/20	£2.25
M5	12	12		4	MF-SC50	£0.50	£0.85
				20	MF-SC50/20	£2.25
M5	16	16		4	MF-SC65	£0.50	£0.85
				20	MF-SC65/20	£2.25
M5	20	20		4	MF-SC13	£0.50	£0.85
				20	MF-SC13/20	£2.25
M5	25	25		4	MF-SC48	£0.60	£0.95
				20	MF-SC48/20	£2.70
M5	30	22		4	MF-SC34	£0.75	£1.10
				20	MF-SC34/20	£3.35
M5	40	22		4	MF-SC15	£0.80	£1.15
				20	MF-SC15/20	£3.60
M5	50	22		4	MF-SC51	£1.00
				20	MF-SC51/20	£4.50
M5	60	22		4	MF-SC29	£1.20
				20	MF-SC29/20	£5.40
M5	70	22		4	MF-SC55	£1.20
				20	MF-SC55/20	£5.40
M5	80	22		2	MF-SC25	£1.00
				10	MF-SC25/10	£4.50
M5	90	22		2	MF-SC56	£1.00
				10	MF-SC56/10	£4.50
M5	100	22		2	MF-SC47	£1.00
				10	MF-SC47/10	£4.50
M5	110	22		2	MF-SC05110	£1.20
				10	MF-SC05110/10	£5.40
M5	120	22		2	MF-SC61	£1.20
				10	MF-SC61/10	£5.40
M5	130	22		2	MF-SC63	£1.20
				10	MF-SC63/10	£5.40
M5	150	22		1	MF-SC80	£1.50
				5	MF-SC80/5	£6.75
Driving Tools for M5 Socket Cap Screws
4mm Hex/Allen Key				1	MF-HK-40	£0.60
4mm Hex/Ball Driver				1	MF-BD-40	£3.45
4mm T Handle Driver				1	MF-TH-40	£5.95
4mm Swivel Wrench				1	MF-BSHW4	£7.75

Popular ancillary items often ordered with M5 Steel Socket Cap Screws
	Description	Pack Qty	Pack Price				Description	Pack Qty	Pack Price
	M5 Steel BZP Hex Nuts	10	£0.70				M5 Steel BZP Flat Washers	20	£0.60
	M5 Steel BZP Nyloc Nuts	10	£0.80				M5 Steel BZP Spring Washers	20	£0.50
To see our full range of nuts and/or order larger quantities, please click here						To see our full range of washers and/or order larger quantities, please click here

M6	Please scroll down to the bottom of this M6 section for related ancillaries and tools
Thread	Overall  Length (mm)	Thread Length (mm)	Socket Size A/F	Pack Qty	MF Ref	Price Screws Only	Price With Nuts & washers	You can change the number of packs on the order form
	L	TL
	Where L and TL values are equal, the shank is fully threaded
M6	6	6		4	MF-SC57	£0.75
				20	MF-SC57/20	£3.35
M6	10	10		4	MF-SC78	£0.75
				20	MF-SC78/20	£3.35
M6	12	12		4	MF-SC58	£0.75
				20	MF-SC58/20	£3.35
M6	16	16		4	MF-SC66	£0.75
				20	MF-SC66/20	£3.35
M6	20	20		4	MF-SC18	£0.75	£1.10
				20	MF-SC18/20	£3.35
M6	25	25		4	MF-SC62	£0.75	£1.10
				20	MF-SC62/20	£3.35
M6	30	30		4	MF-SC49	£0.95	£1.30
				20	MF-SC49/20	£4.25
M6	40	25		4	MF-SC20	£0.95	£1.30
				20	MF-SC20/20	£4.25
M6	50	25		4	MF-SC21	£1.00	£1.35
				20	MF-SC21/20	£4.50
M6	60	25		4	MF-SC67	£1.00	£1.35
				20	MF-SC67/20	£4.50
M6	70	25		2	MF-SC82	£1.00	£1.10
				10	MF-SC82/10	£4.50
	Sorry - this item is currently unavailables item is currently unavailable
M6	70	70		2	MF-SC82F	£1.20	£1.30
Fully Threaded				10	MF-SC82F/10	£5.40
M6	80	25		2	MF-SC81	£1.00	£1.10
				10	MF-SC81/10	£4.50
M6	90	25		2	MF-SC79	£1.00	£1.10
				10	MF-SC79/10	£4.50
M6	100	25		2	MF-SC54	£1.00	£1.10
				10	MF-SC54/10	£4.50
M6	120	25		2	MF-SC06120	£1.00	£1.10
				10	MF-SC06120/10	£4.50
Driving Tools for M6 Socket Cap Screws
5mm Hex/Allen Key				1	MF-HK-50	£0.60
5mm Hex/Ball Driver				1	MF-BD-50	£3.50
5mm T Handle Driver				1	MF-TH-50	£6.25
5mm Swivel wrench				1	MF-BSHW5	£7.95

Popular ancillary items often ordered with M6 Steel Socket Cap Screws
	Description	Pack Qty	Pack Price				Description	Pack Qty	Pack Price
	M6 Steel BZP Hex Nuts	10	£0.70				M6 Steel BZP Flat Washers	20	£0.60
	M6 Steel BZP Nyloc Nuts	10	£0.80				M6 Steel BZP Spring Washers	20	£0.60
To see our full range of nuts and/or order larger quantities, please click here						To see our full range of washers and/or order larger quantities, please click here