Hex Keys


E Mail : info@modelfixings.com Tel 0115 8548791 More Contact info Search our site

You are here : Home > Tools

You are here -

Please refer to the table below for the hexagon key sizes for metric cap screws, countersunk socket screws and grub screws. Please scroll down the page if you wish to purchase a correct size key, or a hexagon ball-end driver (screw driver with ground ball/hexagon end allowing fast off centre driving). Metric and inch sizes are listed

It is essential to use the correct key size for driving cap screws and grub screws etc. In particular, when tightening the smaller sizes of grub screws, using an incorrect key (which may appear to be the correct size before higher torques are applied ) can lead to rounding off of the hexagon socket making removal or further tightening extremely difficult if not impossible.

This information is supplied in good faith and is correct to the best of our knowledge.

Inch size keys for our BA and UNC socket cap screws range are also available below.

PLUS TOP QUALITY NUT SPINNERS FOR FAST TIGHTENING OF HEXAGON BOLT HEADS AND NUTS - SEE BOTTOM OF THIS PAGE

TEE HANDLE DRIVERS AND FOLD-UP ALAN KEY SETS ALSO NOW STOCKED IN A SELECTION OF SIZES

PIN-VICES (sometimes known as hand vices or hand chucks) - EXCELLENT FOR FINE HAND DRILLING, HOLDING SOLDER WIRE AND HOLDING BINDING WIRE ETC.

Looking for our large range of drill bits and new range of 'Snappy' quick change drill bits?
These are listed in our Taps, Dies and Drills section - please click here.

Quick Links to item on this page
Click on the images to go direct to each item list. Images are indicative only and exact forms may vary.
		Hexagon Keys Metric and Inch sizes	Fold-up key Sets Metric and Inch sizes

		Ball Drivers Metric and Inch sizes	Ball Driver Sets Metric and Inch sizes

		Tee Handle Hex Drivers Metric and Inch sizes	Nut Spinners

		Telescopic Magnetic Pick Up 'pen'	Pin Vices

			Combination Spanners

	Our new range of Swann Morton craft scalpels, knives and blades

		Individual Stanley 'Fatmax' Screwdrivers and Precision Screw driver sets

A/F is the dimension across opposite flat sides of the hexagon key in millimetres and is the nominal key size.

Socket Cap Screws		Grub Screws		Socket Countersunk & Button Head Screws
(Metric)		(Metric)		(Metric)
Thread	A/F (mm)	Thread	A/F (mm)	Thread	A/F (mm)

M1.6	1.5	M1.6	0.7	-	-
M2	1.5	M2	0.9	M2 / M2.3	1.3
M2.5/ 2.6	2	M2.5	1.3	M2.5	1.5
M3	2.5	M3	1.5	M3	2
M3.5*	2.5
M4	3	M4	2.0	M4	2.5
M5	4	M5	2.5	M5	3
M6	5	M6	3	M6	4
M8	6	M8	4	M8	5
M10	8	M10	5	M10	6
* M3.5x50mm cap screws require a 2.8mm A/F hex key.

Sizes for BA and UNC below have been converted from inches

Socket Cap Screws

Grub Screws

Socket Cap Screws

Socket Countersunk & Button Head Screws

Grub Screws

(BA)

(UNC)

(UNC & UNF)

Thread

A/F (mm)

Thread

A/F (mm)

Thread

A/F (mm)

Thread

A/F (mm)

2BA

4.0 (5/32")

2BA

2.4 (3/32")

No 2

2.0 (5/64")

No 2

1.3(0.05")

No 2

0.9

4BA

2.4 (3/32")

3BA

2.0 (5/64")

No 3

2.0 (5/64")

6BA

2.0 (5/64")

4BA

1.6 (1/16")

No 4

2.4 (3/32")

No 4

1.6 (1/16")

No 4

1.3(0.05")

8BA

1.6 (1/16")

6BA

1.3 (0.05")

No 5

2.4 (3/32")

No 5

1.6 (1/16")

No 6

2.8 (7/64")

No 6

2.0 (5/64")

No 6

1.6 (1/16")

No 8

3.6 (9/64")

No 8

2.4 (3/32")

No 8

2.0 (5/64")

No 10

4.0 (5/32")

No 10

3.2 (1/8")

No 10

2.4 (3/32")

1/4

4.75 (3/16")

1/4

4.0 (5/32")

1/4

3.2 (1/8")

We can supply hexagon keys to suit the above sizes :- or scroll down the page for hex-ball drivers

All prices include 20% VAT Click here for details

	Single Hexagon Keys Hardened steel 'L' form wrenches - black finish Orders of 50 keys (of the same size) are automatically discounted at -10%
	See below for Hexagon Key Sets

A/F dim	Length (mm)	Pack Qty	MF Ref	Price	You can enter/change the number of items on the order form
(nom key size)	Length (mm)	Pack Qty	MF Ref	Price	You can enter/change the number of items on the order form

0.7 (0.027")	30	1	MF-HK-07	£0.60
0.9 (0.035")	38	1	MF-HK-09	£0.60
1.3 (0.05")	41	1	MF-HK-13	£0.60
1.5	45	1	MF-HK-15	£0.50
1.6 (1/16")	45	1	MF-HK-16	£0.60
2.0*	50	1	MF-HK-20	£0.50
2.4 (3/32")	50	1	MF-HK-24	£0.60
2.5	56	1	MF-HK-25	£0.50
2.8 (7/64")	56	1	MF-HK-28	£0.60
3	63	1	MF-HK-30	£0.50
3.2 (1/8")	63	1	MF-HK-32	£0.60
3.6 (9/64")	63	1	MF-HK-36	£0.60
4	70	1	MF-HK-40	£0.60
4.75 (3/16")	80	1	MF-HK-475	£0.60
5	80	1	MF-HK-50	£0.60
6.35 (1/4")	90	1	MF-HK-635	£0.70

* For 2mm A/F sockets, we also stock 85mm long reach allen keys, hexagon ball-end screwdrivers, and bit inserts for electric and manual socket screw drivers.

For these items please go to our servo screw page.

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

Imperial (inch) sizes also available on application

All prices include 20% VAT Click here for details

	Metric & Inch sizes Fold-Up Hexagon ('Allen') key sets
	Bondhus high quality fold up allen keys mounted in a soft feel ergonomic case.
	Keys can be opened through a full 180 degree arc, which enables continuous driving in tight spots without the need to continuously re-insert the key.

Type	Hex sizes included	MF Ref	Price	You can enter/change the number of items on the order form
Type	Hex sizes included	MF Ref	Each	You can enter/change the number of items on the order form

Metric	1.5,2,2.5,3,4,5,6mm	MF-BFK-10	£6.45
(Red handle)	1.5,2,2.5,3,4,5,6mm	MF-BFK-10	£6.45

Inch	0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16"	MF-BFK-20	£6.45
(Yellow handle)	0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16"	MF-BFK-20	£6.45

Twin Set Deal	Order both the above sets and save 10%	MF-BFK-30	£11.60

All prices include 20% VAT Click here for details

Metric Hexagon Ball-Drivers

Bondhus high quality tools for fast off-centre driving of Metric grub and cap screws

Please note that the sizes below are the A/F dimension, the across flats dimension of the socket they fit. This is not the metric screw size they are used to tighten. As an example, an M2 metric cap screw requires a 1.5mm A/F driver, not a 2mm driver. If in doubt of the size you require, please scroll further up this page where you will find a table of driver sizes for various screw types and sizes.
A/F dim	Blade	Handle	MF Ref	Price	You can enter/change the number of items on the order form
(mm)	length (mm)	Length (mm)	MF Ref	Each	You can enter/change the number of items on the order form

1.5	65	55	MF-BD-15	£2.60

2.0	70	55	MF-BD-20	£2.75

2.5	80	60	MF-BD-25	£2.75

3.0	85	85	MF-BD-30	£2.95

4.0	95	105	MF-BD-40	£3.45

5.0	110	110	MF-BD-50	£3.50

			Set of 6 (1.5, 2.0, 2.5, 3, 4, and 5mm A/F)
			Supplied in a tough plastic pouch with reinforced hanging eyelet
			MF-BD-MS6	£16.50

Imperial (Inch sizes) Hexagon Ball-Drivers
Bondhus high quality tools for fast off-centre driving of UNC and BA grub screws and cap screws

A/F dim	Blade	Handle	MF Ref	Price	You can enter/change the number of items on the order form
inches (mm)	length (mm)	Length (mm)	MF Ref	Each	You can enter/change the number of items on the order form

0.05" (1.27)	60	44	MF-BD-60	£2.60

1/16" (1.6)	64	54	MF-BD-62	£2.60

5/64" (1.98)	68	54	MF-BD-64	£2.75

3/32" (2.4)	70	62	MF-BD-66	£2.75

7/64" (2.8)	75	62	MF-BD-68	£2.75

1/8" (3.2)	75	62	MF-BD-69	£3.15

9/64" (3.6)	82	88	MF-BD-70	£3.15

5/32" (4.0)	90	108	MF-BD-72	£3.35

			Set of 8 (0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64 & 5/32 inch A/F)
			Supplied in a tough plastic pouch with reinforced hanging eyelet
			MF-BD-IS8	£19.50

	Tee Handle Hex Drivers
	Bondhus high quality tee handle hexagon drivers
	Soft feel handles with steel core

Metric Sizes (Red handle)
Hex`size (A/F)	Shaft	Handle	MF Ref	Price	You can enter/change the number of items on the order form
mm	length (mm)	Length (mm)	MF Ref	Each	You can enter/change the number of items on the order form

2.0	135	80	MF-TH-20	£4.95

2.5	155	80	MF-TH-25	£4.95

3.0	185	80	MF-TH-30	£4.95

Set of 3	See above	80	MF-TH-60	£13.35
2, 2.5 & 3.0mm	See above	80	MF-TH-60	£13.35

4.0*	220	80	MF-TH-40	£5.95

5.0*	225	80	MF-TH-50	£5.95

* 4.0 and 5.0 sizes are ball ended allowing slightly off-line driving. Smaller sizes are straight hex shaft.

Imperial (Inch) Sizes (Yellow handle)
Hex`size (A/F)	Shaft	Handle	MF Ref	Price	You can enter/change the number of items on the order form
Inch (mm)	length (mm)	Length (mm)	MF Ref	Each	You can enter/change the number of items on the order form

3/32" (2.4mm)	140	80	MF-TH-332	£4.95

7/64" (2.8mm)	160	80	MF-TH-764	£4.95

9/64" (3.6mm)	140	80	MF-TH-964	£4.95

5/32" (3.97mm)	140	80	MF-TH-532	£4.95

3/16" (4.75mm)	135	100	MF-TH-316	£4.95

Magnetic Pick-up 'Pen'

Extendable, for retrieving small fixings from those hard to reach places. retracts to the size of a ball point pen

Sorry - this item is currently unavailable
Extends to 25" (625mm), retracts to 5" (127mm)	Price each only £1.85

	Nut Spinners 'King Dick' professional quality socket ended drivers for hexagon bolt heads and nuts. Large grip soft feel handles with chrome vanadium shafts. Handle has through hole for storage on a tool rack.
	Not the cheapest, but probably the best. These are top quality tools that will last for years and should not be compared with 'market stall quality' tools.

A/F dim	For metric	Overall	MF Ref	Price	You can enter/change the number of items on the order form
(mm)	size	Length (mm)	MF Ref	Each	You can enter/change the number of items on the order form

4	M2 (inc nylocs)	210	MF-NS04	£8.85
4	8BA	210	MF-NS04	£8.85

5	M2.5	220	MF-NS05	£9.65
	6BA
	2UNC


5.5	M3	220	MF-NS055	£10.25

6	M3.5	220	MF-NS06	£10.25

7	M4	220	MF-NS07	£10.25

8	M5	230	MF-NS08	£10.50
8	5UNC	230	MF-NS08	£10.50

10	M6	230	MF-NS10	£10.95

Combination Spanners

Finding good quality miniature spanners can be a challenge and so we're now pleased to be able to offer a range of excellent quality slimline combination spanners to suit our range of metric hexagon form nuts.
Open ended at one end and with a ring at the other, these tools will give years of service.

Jaw width	For metric	Approx Overall	MF Ref	Price	You can enter/change the number of items on the order form
(mm)	size	Length (mm)	MF Ref	Each	You can enter/change the number of items on the order form


5.5	M3	93	MF-PX055	£4.10

6	M3.5	100	MF-PX06	£4.10

7	M4	110	MF-PX07	£4.30

8	M5	120	MF-PX08	£4.40

10	M6	140	MF-PX10	£4.60

	Pin Vices
	A set of 4 all steel construction pin vices giving an overall clamping range of 0 to 4.5mm diameter
	These tools are excellent for clamping small drills for hand drilling of small holes where access is difficult and a power tools isn't practical.
	Shafts are hollow so wire etc can pass all the way through.

Clamping Range in the set (mm)	Approx Length (mm)	MF Ref	Price per set	You can enter/change the number of items on the order form
0-1 mm	85	MF-PVS4	£10.25
0.75-1.5 mm	88
1.5-3.0 mm	88
3.0 - 4.5 mm	102

Swann Morton Craft Knives and Hobby Scalpels

Below is our new range of top quality British Made craft knives and Scalpels.
We stock a selection of traditional steel scalpel handles, c/w blades, Acrylic scalpel handles, and retractable scalpel handles plus a selection of spare blades.
All blades are non sterile


Product Description	Item ref	Price	You can enter/change the number of items on the order form

	MF-SM03	£4.15
No 3 Traditional Steel handle for No 10 and No 10A Blades Supplied with 5 No10a Blades. 134mm long as shown	MF-SM03	£4.15

	MF-SM04	£4.15
No 4 Traditional Steel handle for No 22 and No 26 Blades Supplied with 5 No26 Blades. 155mm long as shown	MF-SM04	£4.15

	MF-SM05	£8.10
No 5a Acrylic handle for No 10 and No 10A Blades Supplied with 5 No10a Blades. 144mm long as shown	MF-SM05	£8.10

	MF-SM06 .	£8.10
No 6a Acrylic handle for No 22 and No 26 Blades Supplied with 5 No26 Blades. 162mm long as shown	MF-SM06 .	£8.10

	MF-SMRA1	£5.60
New 'Retractaway Premium' Steel handle for No 10 and No 10A Blades 156mm long as shown with 10a blade fitted. Available as a handle only - please select blades from 10 & 10A below	MF-SMRA1	£5.60

Swann Morton Scalpel Blades (non sterile)
	Blade No	Suitable Handles	O/all Blade Length (mm)	Qty	Price	You can enter/change the number of items on the order form
			(for scale)
	10	No 3, No 5a, and Retractaway	41	5	£1.05
				20	£3.40
				100	£13.60

	10a	No 3, No 5a, and Retractaway	41	5	£1.05
				20	£3.40
				100	£13.60

	22	No 4 and No 6a	57	5	£1.05
				20	£3.40
				100	£13.60

	26	No 4 and No 6a	57	5	£1.05
				20	£3.40
				100	£13.60
Please note that these are non-sterile surgical blades and are extremely sharp. Always follow the guidance on the packaging regarding safe opening of blade packs (note the direction arrows on the foil sleeves), blade removal and re-fittings and do not allow access to these tools by children. Further to the package instructions, always replace blades when they become blunt - accidents are far more likely to occur when using a blunt blade and excessive pressure. We also recommend that eye protection be used to avoid injury in the event of blade breakage (particularly important when using the point end blades).

These drivers are especially suitable for use with our miniature self tapper and countersunk panel screw range (these are also listed on our self tapper page) Phillips and slot tipped drivers quality 'Fatmax' Stanley screw drivers with soft feel grips for comfortable use.
	Tip Style	Suitable for	MF Ref	Price Each	You can enter/change the number of items on the order form
	Phillips/Cross	No 0 and 1cross drive self tappers. No 0 and 1 countersunk panel screws	65-204	£5.65
	Phillip/Cross	No 2,4 and 6 cross drive No 2 countersunk panel screws	65-206	£5.95
	Slot	No 0 and 1 slot drive self tappers and brass wood screws	65-006	£4.95
	Slot	No 2 and 4 slot drive self tappers	64-978	£5.95

New product - Draper Precission Screwdriver sets
Click for larger image	We've used a set of these 6 Draper Screwdrivers in our own workshop for many years and so can vouch for their quality and usefulness. Comprises 6 soft-feel rubberised handles with swivel end caps for easy driving. Tempered steel tips for Pozi, Philips and Slot screws - this set is particularly useful with our range of No 0, 1, 2 and 4 self tapping screws. Each screwdriver is 13cm long witha 4cm blade. The case measures 18x10.8x2.7cm making it perfect for either the workshop or field tool box.	£14.75

This page was last modified on : August 15, 2017

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.

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

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

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