3.5 mm Wrenches | McMaster-Carr

Turn nuts and bolts in tight spaces. These wrenches are up to 50% shorter than others to squeeze into spots without enough clearance to make full turns, such as engine compartments. However, you may need longer wrenches for higher-leverage jobs.

6-Point Opening—Avoid rounding off the corners of hex fasteners. These wrenches won't slip, even when nuts and bolts are rusted or damaged, since they grip the sides rather than the corners.

Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.

Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.

			Box End		Open End
	Drive Size, mm	Overall Lg.	Head Offset Angle	Head Thick.	Opening Angle	Head Thick.	Appearance		Each
6-Point Opening







				Chrome-Plated Steel

				3.5	2 3/4"	15°	3/32"	22.5°	3/32"	Polished	5314A36	000000

Precise-Control Screwdriver Sets

Make fine-tuned adjustments on a variety of small, delicate components, such as electronics, miniature models, and microscopes. These screwdriver sets give you better control than a standard screwdriver to avoid stripping tiny screws or cracking fragile materials. Press the end of the handle with your palm to apply constant pressure while turning the body of the screwdriver with your fingertips. They are also known as precision and miniature screwdrivers.

	Includes	Grip Style	Material	Container Type		Each
Phillips, Slotted, Hex, and Torx



	50	5 3/4" Lg. Chip Lifter Hex Screwdrivers: 0.028", 0.035", 0.050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32" Hex Screwdrivers: 1.27 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm Nutdrivers: 1.5 mm, 1.8 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm Phillips Screwdrivers: No. 000, No. 00, No. 0, No. 1 Slotted Screwdrivers: 1/32", 0.039", 3/64", 1/16", 0.070", 5/64", 3/32", 1/8", 9/64", 5/32" Torx Screwdrivers: T1, T2, T3, T4, T5, T6, T7, T8, T9, T10	Plain	Chrome-Plated Steel	Metal Stand	52985A94	0000000

Angled-Drive Ball-Tip L-Key Sets


	Plastic Caddy

Reach corners and tight spaces with the sizes you use most. These L-keys turn screws at an angle when you can’t access them head on. They have a ball tip on the long leg that engages the drive with less contact than a straight tip. Ball tips are handy for corners and tightly-packed areas, such as control panels and junction boxes. However, they don’t grip as tightly as straight tips, and may strip the drive of the fastener if you crank them too hard. These L-keys are precision manufactured to tight tolerances.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

Extra Long—Reach deep fasteners with the extra-long leg on these L-keys. Flip them around and grip the long leg with two hands for extra leverage to loosen stubborn screws.

				Ball
	No. of Pieces	Drive Size, mm	Relative Lg.	Location	Shape	Max. Access Angle	Finish	Container Type		Each
Alloy Steel







				Hex

				15	1.27, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10	Long	Single Ball	Round	25°	Black Phosphate Coated	Plastic Caddy	5709A45	000000


				15	1.27, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10	Long	Single Ball	Round	25°	Blue Painted	Plastic Caddy	5786A1	00000
				15	1.27, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10	Long	Single Ball	Round	25°	Gold Painted	Plastic Caddy	7813A15	00000
				15	1.27, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10	Extra Long	Single Ball	Round	25°	Chrome Plated	Plastic Caddy	5888A45	00000

L-Key Sets

Plastic

Caddy

Keep the most common L-key sizes in one portable set so the right size is always ready. These L-keys are precision manufactured to tight tolerances for an exact fit.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

	Finish	Container Type		Each
Alloy Steel







	Hex

	15	1.27, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10	Long	Black Phosphate Coated	Plastic Caddy	7158A7	000000

Static-Control Precise-Control Screwdriver Sets

Protect delicate microelectronics from harmful static shocks. Also known as ESD-safe screwdrivers, these meet IEC requirements to drain static away from your workpiece before it causes damage. Precise-control screwdrivers allow for nimble, fine-tuned adjustments. Press the end of the handle with your palm to apply constant pressure while turning the body of the screwdriver with your fingertips.

Warning: These screwdrivers conduct electricity. Do not use them near active power sources.

	Includes	Grip Style	Material	Static Control Rating	Surface Resistivity	Specs. Met	Container Type		Each
Phillips, Slotted, Hex, and Torx



	50	5 3/4" Lg. Chip Lifter Hex Screwdrivers: 1/16", 3/32", 7/64", 1/8" Hex Screwdrivers: 0.7 mm, 0.9 mm, 1.3 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm Nutdrivers: 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 1/8", 5/32", 3/16", 1/4" Phillips Screwdrivers: No. 000, No. 00, No. 0, No. 1 Slotted Screwdrivers: 0.031", 0.039", 0.047", 0.059", 0.079", 0.098", 0.118", 0.138", 0.157" Torx Screwdrivers: T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T15, T20	Plain	Chrome-Plated Steel	Static Dissipative	1× 10^6Ω⋅cm to 1× 10^9Ω⋅cm	IEC 61340-5-1	Metal Stand	7440A95	0000000

Bolt-Through 6-Point Socket Sets

Pair the sockets in these sets with the bolt-through ratchet wrench to reach nuts at the bottom of a long threaded rod or bolt. The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points. For use with hand-drive tools only.

Chrome-Plated Steel

Components Included	Includes	Container Type	Socket Shape	Drive Size	For Max. Bolt Dia.		Each



27	23 Sockets 1 Adapter 1 Drive Tool 2 Extensions	Inch: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 3/8", 7/16", 1/2", 9/16" Metric: 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm 6 1/2" Long Ratchet Wrench 3" Long Extension 6" Long Extension Adapter for 1/4" Square Drive Sockets	Plastic Case	6-Point	5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 3/8", 7/16", 1/2", 9/16", 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm	1/4"	54485A101	0000000


46	39 Sockets 2 Drive Tools 2 Extensions 3 Adapters	1/4" Drive Inch: 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 3/8", 7/16", 1/2" 1/4" Drive Metric: 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm 3/8" Drive Inch: 3/8”, 7/16”, 1/2”, 9/16”, 5/8”, 11/16” 3/4”, 3/8” Drive Metric: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm 6 1/2" Long Ratchet Wrench 8" Long Ratchet Wrench 3" Long 1/4" Square Drive Extension 3" Long 3/8" Square Drive Extension Adapter for 1/2" Square Drive Sockets Adapter for 1/4" Square Drive Sockets Adapter for 3/8" Square Drive Sockets	Plastic Case	6-Point	5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm	3/8"	54485A102	000000

6-Point Sockets

The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points. For use with hand-drive tools only.

Chrome-Plated Steel


Standard Clearance	6-Point Socket

						Standard Clearance
	Drive Size, mm	OD	Specs. Met	Socket Shape	For Drive Style	Overall Lg.		Each
1/4" Square Drive



		3.5	27/64"	ASME B107.5M, DIN 3124, EN 3709, ISO 2725-1	6-Point	External Hex	15/16"	7195A75	00000

Angled-Drive Ball-Tip L-Keys

Turn screws at an angle when you can’t access them head on. These L-keys have a ball tip on the long leg that engages the drive with less contact than a straight tip. Ball tips are handy for corners and tightly packed areas, such as control panels and junction boxes. However, they don’t grip as tightly as straight tips and may strip the drive of the fastener if you crank them too hard. These L-keys are precision manufactured to tight tolerances.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

		Length				Ball
	Drive Size, mm	Overall	Relative	Long Leg	Short Leg	Location	Shape	Finish	Max. Access Angle		Each
Alloy Steel







				Hex

				3.5	4 1/8"	Long	3 15/16"	7/8"	Single Ball	Round	Black Phosphate Coated	25°	5503A41	00000

L-Keys

The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

Extra Long—Reach deep fasteners with the extra-long leg on these L-keys. Flip them around and grip the long leg with two hands for extra leverage to loosen stubborn screws.

		Length						Each		Package
	Drive Size, mm	Overall	Relative	Long Leg	Short Leg	Finish	Specs. Met		Each	Pkg. Qty.		Pkg.
Alloy Steel







				Hex

				3.5	2 11/16"	Short	2 9/16"	13/16"	Chrome Plated	DIN 911, ISO 2936	9766N36	00000	50	9766N737	000000


				3.5	2 11/16"	Short	2 9/16"	7/8"	Black Oxide	—	7289A51	0000	25	7289A511	0000
				3.5	4 1/8"	Long	4"	7/8"	Black Oxide	—	6958A51	0000	25	6958A511	00000
				3.5	5 3/8"	Extra Long	5 1/4"	13/16"	Chrome Plated	DIN 911, ISO 2936	9766N41	0000	50	9766N742	000000
				3.5	6 1/8"	Extra Long	6"	7/8"	Black Oxide	—	7122A735	0000	25	7122A148	00000

Ball-End Driver Shafts


		Hex

Create your own tool by attaching these shafts to a handle, or use with socket wrenches and power tools. They have a ball end that allows angled entry to make good contact with the recess when a standard-tip shaft can’t.

	Overall Lg.	Max. Access Angle	Material		Each
For Hex Drives



	3.5	4 13/16"	25°	Black Phosphate-Coated Steel	6972A48	00000

Ball-Tip Screwdrivers

Image of ProductInUse. Front orientation. Contains Annotated.

Turn screws even when you can't access them head on. These screwdrivers are handy in corners and underneath machinery because their ball tip can engage fasteners at an angle. While they're great for most fastening jobs, the tip makes less contact with fastener recesses than standard, straight tips and may snap off under extremely high torque.

The handle on these drivers has a rubberized, cushioned grip over a hard plastic core for comfort and control.

Standard Length—The most common screwdriver length for a specific drive size.

Long—An extended shaft turns screws in deep recesses other screwdrivers can't reach.

Premium—The best screwdrivers available, with tips machined to tight tolerances for the tightest possible fit in fastener recesses. The snug fit means they'll turn screws quickly without wearing screw heads and the driver's tip.

				Shaft
	Drive Size, mm	Relative Lg.	Overall Lg.	Lg.	Overall Wd.	Max. Access Angle	Material	Mfr.		Each
Hex







				Premium

				3.5	Standard	6 15/16"	3 1/2"	1/8"	25°	Phosphate-Coated Steel	Bondhus	5497A55	00000


				3.5	Long	10"	6 7/16"	1/8"	25°	Phosphate-Coated Steel	Bondhus	5497A66	0000