No. 4 Screwdrivers | McMaster-Carr

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Electrically Insulating

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48 Products

Screwdrivers

These standard screwdrivers can be found in every tool box.

For technical drawings and 3-D models, click on a part number.

Phillips

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Finish	Handle Material		Each
No. 4	13 1/4"	8"	3/8"	Steel	Black Oxide	Plastic	0000000	000000

Pozidriv®

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Color; Finish	Handle Material		Each
No. 4	12 3/4"	8 1/4"	5/16"	Steel	Black Oil Coated	Plastic	0000000	000000

Ultra-Grip Screwdrivers

These screwdrivers have a soft, contoured handle that provides comfort and the best possible grip for achieving maximum torque.

Square drivers are also known as Robertson screwdrivers.

For technical drawings and 3-D models, click on a part number.

Phillips

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Finish	Handle Material		Each
No. 4	10 11/16"	5 7/8"	3/8"	Steel	Chrome Plated	Plastic	0000000	000000

Square

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Finish	Handle Material		Each
No. 4	12 1/4"	8"	5/16"	Steel	Chrome Plated	Plastic	0000000	000000

Heavy Duty Screwdrivers for Chiseling and Demolition

Phillips

A shaft that extends through the handle and a steel end cap gives these drivers the strength to absorb hammer blows. The ultra-grip handle is contoured to provide comfort and the best possible grip.

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Handle Material		Each
Phillips
No. 4	12 1/2"	8"	3/8"	Chrome-Plated Steel	Plastic	0000000	000000

Screwdrivers with Tether Ring

Shown with Tool Lanyard (Not Included)

Phillips

When working at heights, secure a lanyard to the ring on these tools and prevent drops. The ring rotates around the shaft so the driver turns freely. Use with Tool Lanyards that have a 1/4" minimum tool opening (not included).

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Handle Material	Ring ID		Each
Phillips
No. 4	10 3/4"	6"	3/8"	Chrome-Plated Steel	Plastic	1/4"	0000000	000000

Electrical-Insulating Screwdrivers

An insulated handle and shaft protect against shock from accidental contact with live electrical circuits. These tools are tested to 1,000 volts to meet EN, IEC, or ASTM standards.

Ultra-grip drivers have a soft, contoured handle that provides comfort and the best possible grip for achieving maximum torque.

For technical drawings and 3-D models, click on a part number.

Phillips

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Shaft Type	Material	Handle Material	Grip Style	Specifications Met		Each
No. 4	12 1/4"	8"	15/32"	Standard	Plastic-Coated Steel	Plastic	Ultra Grip	EN 60900	0000000	000000

Electrical-Insulating Screwdriver Sets

Phillips

The assorted screwdrivers in these sets have an insulated handle and shaft that protect against shock from accidental contact with live electrical circuits. They are tested to 1,000 volts to meet IEC, EN, or ASTM standards. Drivers have a contoured ultra-grip handle that provides comfort and the best possible grip for achieving maximum torque.

For technical drawings and 3-D models, click on a part number.

Number of Pieces	Includes	Shaft Type	Material	Handle Material	Specifications Met		Each
5	No. 0 Phillips Screwdriver—6 3/8" O'all Lg. No. 1 Phillips Screwdriver—7" O'all Lg. No. 2 Phillips Screwdriver—8 1/4" O'all Lg. No. 3 Phillips Screwdriver—10 1/4" O'all Lg. No. 4 Phillips Screwdriver—12 1/4" O'all Lg.	Standard	Plastic-Coated Steel	Plastic	EN 60900	0000000	000000

Nonsparking Screwdrivers

Phillips

Made of beryllium copper that is FM approved, these nonmagnetic screwdrivers help meet OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Warning: Do not use these tools in direct contact with acetylene.

		Shaft
Drive Size	Overall Lg.	Lg.	O'all Wd.	Material	Handle Material	Specifications Met		Each
Phillips
No. 4	13"	8"	3/8"	Beryllium Copper	Plastic	FM Approved	000000	000000

Bit Screwdrivers

With Plain Grip

Insert a bit into the shaft and a magnet holds it in place.

Tamper-resistant hex are also known as pin-in-hex.

Tamper-resistant Torx are also known as pin-in-Torx.

			Shaft		Material
No. of Sizes	Sizes Included	O'all Lg.	Lg.	O'all Wd.	Shaft	Bit	Handle	Grip Style	Features		Each
For 1/4" Bit Hex Shank Size
26	Drilled Spanner: No. 4, No. 6, No. 8, No. 10 Tamper-Resistant Hex: 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 2mm, 2.5mm, 3mm, 5mm Tamper-Reistant Torx: T7, T8, T10, T15, T20, T25, T27, T30, T40 Torq Set®: No. 6, No. 8, No. 10	8 1/2"	3 3/8"	5/16"	Stainless Steel	Steel	Plastic	Plain	Bit storage inside tool	0000000	000000

Phillips Bits

Hex Shank

Hex Shank for Power Tools

Phillips

Strong and durable, these multipurpose bits are often used with power tools to install sheet metal screws.

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

Hex shank bits for power tools have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.

For technical drawings and 3-D models, click on a part number.

1/4" Hex Shank Size
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	5/16", 3/8", 7/16", 1/2"	1 1/4"	Steel	0000000	00000
1/4" Hex Shank Size for Power Tools
No. 4	5/16", 3/8", 7/16", 1/2"	2"	Steel	0000000	0000
No. 4	5/16", 3/8", 7/16", 1/2"	12"	Steel	0000000	00000
5/16" Hex Shank Size
No. 4	5/16", 3/8", 7/16", 1/2"	1 1/4"	Steel	0000000	0000

High-Torque Phillips Bits

Hex Shank

Phillips

Less likely to crack or break apart under high torque than standard bits, these are often used with power tools to install machine screws.

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

For technical drawings and 3-D models, click on a part number.

1/4" Hex Shank Size
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	5/16", 3/8", 7/16", 1/2"	1 1/4"	Steel	0000000	00000
5/16" Hex Shank Size
No. 4	5/16", 3/8", 7/16", 1/2"	1 1/4"	Steel	0000000	0000

Slip-Resistant Phillips Bits

Hex Shank

Phillips

Ribs forged into the wings of these bits grip the screw recess to reduce slipping and stripping. They're also known as ACR® bits.

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

5/16" Hex Shank Size
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	5/16", 3/8", 7/16", 1/2"	1 1/4"	Steel	0000000	00000

Square Bits

Hex Shank

Hex Shank for Power Tools

Designed for screws with a square recess in the head, these are also known as Robertson bits.

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

1/4" Hex Shank Size
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	5/16", 3/8", 7/16", 1/2"	1"	Steel	0000000	00000
1/4" Hex Shank Size for Power Tools
No. 4	5/16", 3/8", 7/16", 1/2"	2"	Steel	0000000	0000
No. 4	5/16", 3/8", 7/16", 1/2"	2 7/8"	Steel	0000000	0000
No. 4	5/16", 3/8", 7/16", 1/2"	3 1/2"	Steel	0000000	0000
No. 4	5/16", 3/8", 7/16", 1/2"	6"	Steel	0000000	00000
No. 4	5/16", 3/8", 7/16", 1/2"	12"	Steel	0000000	00000

Square Bits for Stainless Steel Screws

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk. Designed for screws with a square recess in the head, they are also known as Robertson bits. Also called insert bits, use in hand drivers or with a bit adapter in power tools.

1/4" Hex Shank Size
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	5/16", 3/8", 7/16", 1/2"	1"	Stainless Steel	0000000	00000

Pozidriv® Bits

Hex Shank

Pozidriv®

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

1/4" Hex Shank Size
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	1/4"	1 1/4"	Steel	0000000	00000

Tri-Wing® Bits

Hex Shank for Power Tools

A three-winged tip fits triangular slotted screw recesses.

For technical drawings and 3-D models, click on a part number.

1/4" Hex Shank Size for Power Tools
Drive Size	For Screw Size	Overall Lg.	Material		Each
No. 4	No. 8	1 1/4"	Steel	000000000	00000

Hi-Torque Bits

Also known as insert bits, these are used in hand drivers or with a bit adapter in power tools.

For technical drawings and 3-D models, click on a part number.

1/4" Hex Shank Size
Drive Size	Overall Lg.	Material		Each
No. 4	1 1/4"	Steel	0000000	000000

Bit Assortments

These assortments contain general-purpose bits.

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.


Hex	Tamper-Resistant Hex	Phillips	Slotted	Torx	Square
Drilled Spanner	Pozidriv®	Tamper-Resistant Torx	Torq-Set®	Tri-Wing®

1/4" Hex Shank Size—Steel
No. of Pieces	Components Included	Bits Included	Adapters Included	Drive Tools Included		Each
30	26 Bits 3 Adapters 1 Drive Tool	Drilled Spanner: No. 6, No. 8 No. 10 (1" O'all Lg.) Pozidriv®: No. 2 (1" O'all Lg.) Square: No. 1, No. 2 (1" O'all Lg.) Tamper-Resistant Hex: 3/32", 7/64", 1/8", 9/64" T25, T27, T30, T40 (1" O'all Lg.) 5/32", 3/16", 7/32", 1/4" (1" O'all Lg.) Tamper-Resistant Torx: T9, T10, T15, T20 Torq-Set®: No. 5, No. 8 (1" O'all Lg.) Tri-Wing®: No. 4, No. 5 (1" O'all Lg.)	1/8" Male Square Drive × 1/8" Hex Shank Adapter 1/4" Male Square Drive × 1/4" Hex Shank Adapter 2 1/8" Lg. Bit Adapter for Power Tools	8 3/4" Lg. Bit Screwdriver	000000	000000
39	36 Bits 2 Adapters 1 Drive Tool	Drilled Spanner: No. 4, No. 6, No. 8, No. 10 (1" O'all Lg.) Phillips: No. 1, No. 2 (1" O'all Lg.) Pozidriv®: No. 0, No. 1, No. 2, No. 3 (1" O'all Lg.) Slotted: 1/4", 5/16" (1" O'all Lg.) Square: No. 1, No. 2, No. 3 (1" O'all Lg.) T25, T27, T30, T40 (1" O'all Lg.) Tamper-Resistant Hex: 5/64", 3/32", 7/64" 1/8", 9/64", 5/32" (1" O'all Lg.) Tamper-Resistant Torx: T8, T10, T15, T20 Torq-Set®: No. 6, No. 8, No. 10 (1" O'all Lg.) Tri-Wing®: No. 1, No. 2, No. 3, No. 4 (1" O'all Lg.)	1/4" Female Square Drive × 1/4" Female Hex Adapter 2 1/4" Lg. Bit Adapter for Power Tools	Screwdriver Handle	0000000	00000
100	96 Bits 4 Adapters	Drilled Spanner: No. 4, No. 6, No. 8, No. 10 No. 12, 1/4" (1" O'all Lg.)—1 ea. Hex (Inch): 0.050", 1/16", 5/64", 3/32", 7/64" 1/8", 9/64", 5/32", 3/16", 7/32", 1/4" 5/16", 3/8" (1" O'all Lg.)—1 ea. Hex (Metric): 1.5 mm, 2 mm, 2.5 mm, 3 mm 4 mm, 5 mm, 6 mm, 7 mm, 8 mm (1" O'all Lg.)—1 ea. Phillips: No. 0 (1" O'all Lg.)—1 ea. Phillips: No. 1, No. 3 (1" O'all Lg.)—2 ea. Phillips: No. 2 (1" O'all Lg.)—4 ea. Pozidriv®: No. 1, No. 2, No. 3 (1" O'all Lg.)—1 ea. Screw-In Hook Driver Bit—1 ea. Slotted: 3/32", 1/8", 5/32", 3/16", 7/32", 1/4" 9/32", 5/16", 3/8" (1" O'all Lg.)—1 ea. Square: No. 0, No. 1, No. 2, No. 3, No. 4 (1" O'all Lg.)—1 ea. Tamper-Resistant Hex (Inch): 3/32" 7/64", 1/8", 9/64", 5/32", 3/16", 7/32" 1/4", 5/16" (1" O'all Lg.)—1 ea. Tamper-Resistant Hex (Metric): 2.5 mm, 3 mm 4 mm, 5 mm, 6 mm, 8 mm (1" O'all Lg.)—1 ea. Tamper-Resistant Torx: T6, T7, T8, T9, T10, T15 T20, T25, T27, T30, T40 (1" O'all Lg.)—1 ea. Torx: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27 T30, T40, T45, T50, T55 (1" O'all Lg.)—1 ea.	1/4" Male Square Drive × 1/4" Hex Shank Adapter (1" O'all Lg.) 1/4" Male Square Drive × 1/4" Hex Shank Adapter (2" O'all Lg.) 2 1/2" Lg. Bit Adapter for Power Tools Bit Adapter for Square Drive Tools	__	000000	00000
1/4" Hex Shank Size for Power Tools—Steel
50	50 Bits	Hex (Inch): 0.050", 1/16", 5/64", 3/32", 7/64", 1/8" 9/64", 3/16", 7/32", 1/4" (2" O'all Lg.)—1 ea. Hex (Inch): 5/32" (2" O'all Lg.)—2 ea. Hex (Metric): 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm 6 mm, 8 mm (2" O'all Lg.)—1 ea. Phillips: No. 0, No. 1, No. 2, No. 3, No. 4 (2" O'all Lg.)—1 ea. Slotted: 1/8", 9/64", 5/32", 3/16", 7/32", 1/4" 9/32", 5/16" (2" O'all Lg.)—1 ea. Square: No. 0, No. 1, No. 2, No. 3 No. 4 (2" O'all Lg.)—1 ea. Torx: T25 (2" O'all Lg.)—2 ea. Torx: T5, T6, T7, T8, T9, T10, T15, T20, T27 T30, T40 (2" O'all Lg.)—1 ea.	__	__	000000	000000

Tri-Wing® Bit Sets

A three-winged tip fits triangular slotted screw recesses. Also known as insert bits, use these in hand drivers or with a bit adapter in power tools.

1/4" Hex Shank Size
Components Included	Bits Included	Material	Container Type		Each
6 Bits	Tri-Wing®: No. 0, No. 1, No. 2, No. 3, No. 4, No. 5 (1" O'all Lg.)	Steel	Plastic Caddy	0000000	000000

Torq-Set® Bit Sets

Hex Shank

Hex Shank for Power Tools

These bits have an offset cross shape.

Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

For technical drawings and 3-D models, click on a part number.

1/4" Hex Shank Size
Components Included	Bits Included	Material	Container Type		Each
10 Bits	Torq-Set®: No. 4, No. 6, No. 8, No. 10, 1/4" (1" O'all Lg.)—2 ea.	Steel	__	00000000	000000
1/4" Hex Shank Size for Power Tools
10 Bits	Torq-Set®: No. 4, No. 6, No. 8, No. 10, 1/4" (1 1/4" O'all Lg.)—2 ea.	Steel	Plastic Caddy	00000000	00000

Impact Screwdrivers


	Phillips
	Slotted

Break stuck screws free using screwdriver bits. Strike the end of the handle with a hammer to turn the bit and tighten or loosen fasteners. Use these tools as an impact wrench without the bit adapter.

3/8" Square Drive Size
Number of Sizes	Sizes Included	Drive Size	For Bit Hex Shank Size	Overall Lg.	Material	Finish	Bit Material		Each
5	Phillips: No. 1, No. 2, No. 3, No. 4 Slotted: 3/8"	No. 1, No. 2, No. 3, No. 4, 3/8"	5/16"	5 1/4"	Steel	Black Oxide	Steel	000000	000000
1/2" Square Drive Size
5	Phillips: No. 1, No. 2, No. 3, No. 4 Slotted: 3/8"	No. 1, No. 2, No. 3, No. 4, 3/8"	5/16"	5 1/4"	Steel	Black Oxide	Steel	0000000	00000

Dual-Drive Phillips Bit Socket Sets

When vertical space is tight or you need an extra twist on your socket, use one of the dual-drive Phillips bit sockets in this set. They work with a standard square-drive tool and a box or open-end wrench. Tighten them with your square-drive tool and give them an additional turn with the leverage from your open-end or box wrench. Or just use a box or open-end wrench when you can’t fit your square-drive tool. Pair them with hand-drive tools only. The sockets in these sets come with a clip rail to make sure they stay put and organized when not in use.

1/4" Square Drive, 7/16" Hex Drive
No. of Pieces	Includes	Overall Lg.	Material		Each
10	Bit Sockets: No. 1 (3/4" O'all Lg.)—2 ea. Bit Sockets: No. 2 (3/4" O'all Lg.)—4 ea Bit Sockets: No. 3 (3/4" O'all Lg.)—3 ea Bit Sockets: No. 4 (3/4" O'all Lg.)—1 ea.	3/4"	Titanium-Nitride (TiN) Coated Steel	0000000	000000

Tri-Groove Socket Sets

Grip the indentations around the outside of tri-groove fasteners.

1/4" Square Drive—Steel
No. of Pieces	Components Included	Includes	Finish		Each
4	3 Sockets 1 Drive Tool	Standard Socket: No. 4 (For No. 4 Standard Screws and No. 6 Countersunk Screws) Standard Socket: No. 6 (For Nos. 6 and 8 Standard Screws and Nos. 8 and 10 Countersunk Screws) Standard Socket: No. 10 (For Nos. 10, 12, and 1/4" Standard Screws; 1/4" Countersunk Screws; and Nos. 6 and 8 Nuts) 8" Long Socket Screwdiver Handle	Black Oxide	0000000	000000

Slotted Bit Sockets

For technical drawings and 3-D models, click on a part number.

3/8" Square Drive
Drive Size	Overall Lg.	Material	Finish	Bit Replaceable		Each
No. 4	1 11/16"	Steel	Chrome Plated	No	000000000	000000

Phillips Bit Sockets

For technical drawings and 3-D models, click on a part number.

Sockets						Replacement Bits
Drive Size	Overall Lg.	Material	Bit Replaceable		Each		Each
1/4" Square Drive
No. 4	1 3/4"	Chrome-Plated Steel	Yes	000000000	00000	000000000	00000
3/8" Square Drive
No. 4	2 1/16"	Chrome-Plated Steel	Yes	00000000	00000	00000000	0000
1/2" Square Drive
No. 4	2 3/16"	Chrome-Plated Steel	No	00000000	00000	000000	00

Stubby Phillips Bit Sockets

The short bit on these sockets fits in spaces that screwdrivers can’t and where height clearance is limited. For use with hand-drive tools only.

For technical drawings and 3-D models, click on a part number.

1/4" Square Drive
Drive Size	Overall Lg.	Material	Bit Replaceable		Each
No. 4	1 1/8"	Chrome-Plated Steel	No	00000000	000000

Extended-Reach Phillips Bit Sockets

An extra-long Phillips bit allows these sockets to reach far-away fasteners. Use them where standard or stubby sockets can’t reach. For use with hand-drive tools only.

For technical drawings and 3-D models, click on a part number.

3/8" Square Drive
Drive Size	Overall Lg.	Material	Bit Replaceable		Each
No. 4	5 7/8"	Chrome-Plated Steel	No	000000000	00000

Pozidriv® Bit Sockets

For technical drawings and 3-D models, click on a part number.

1/2" Square Drive
Drive Size	Overall Lg.	Material	Bit Replaceable	Specifications Met		Each
No. 4	2 3/8"	Chrome-Plated Steel	No	ISO 1174, ISO 8764-1	00000000	000000

Tri-Groove Sockets

Square Drive

Grip the indentations around the outside of tri-groove fasteners. These sockets are for hand-driven use only.

1/4" Square Drive
Drive Size	Overall Lg.	OD	For Fastener Type	For Screw Size (Head Dia.)	Material		Each
No. 4	1"	31/64"	Screws	No. 4 Standard (0.13") No. 6 Countersunk (0.268")	Black-Oxide Steel	0000000	000000