Impact Screwdriver Bits | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Square Drive Size Square Drive Size

1/4"

3/8"

1/2"

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Number of Pieces Number of Pieces

	Drive Type Drive Type

Impact

Nonimpact Power

	Socket Retainer Style Socket Retainer Style

Ball Detent

	Bolt Clearance Bolt Clearance

1/16"

1/8"

3/16"

	For Bit Shank Type For Bit Shank Type

	Hex
	Hex for Power Tools

	For Use With For Use With

Impact Wrenches

Impact Drivers

	Overall Diameter Overall Diameter

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89 Products

Phillips Bits for Impact Drivers

Hex Shank

Hex Shank for Power Tools

Phillips

The toughest bits available, these withstand the shock and twisting force of impact drivers.

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.

Diamond-coated bits have added wear resistance.

No. 2 reduced bits have a reduced diameter that fits deeper into the screw head than standard bits. They are often used with drywall screws.

1/4" Hex Shank Size
Size	For Screw Size	Overall Lg.	Material		Each
No. 1	No. 2, No. 3, No. 4	1"	Diamond-Coated Steel	0000000	00000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	1"	Diamond-Coated Steel	0000000	0000
No. 2 Reduced	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	1"	Zinc-Plated Steel	00000000	000
No. 3	No. 12, 1/4"	1"	Diamond-Coated Steel	0000000	0000
1/4" Hex Shank Size for Power Tools
No. 1	No. 2, No. 3, No. 4	2"	Steel	0000000	0000
No. 1	No. 2, No. 3, No. 4	2 3/4"	Zinc-Plated Steel	00000000	0000
No. 1	No. 2, No. 3, No. 4	3 1/2"	Zinc-Plated Steel	00000000	0000
No. 1	No. 2, No. 3, No. 4	4"	Zinc-Plated Steel	00000000	0000
No. 1	No. 2, No. 3, No. 4	6"	Zinc-Plated Steel	00000000	0000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	2"	Diamond-Coated Steel	0000000	0000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	2 3/4"	Zinc-Plated Steel	00000000	0000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	3 1/2"	Zinc-Plated Steel	00000000	0000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	4"	Zinc-Plated Steel	00000000	0000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	6"	Zinc-Plated Steel	00000000	0000
No. 3	No. 12, 1/4"	2"	Diamond-Coated Steel	0000000	0000
No. 3	No. 12, 1/4"	2 3/4"	Zinc-Plated Steel	00000000	0000
No. 3	No. 12, 1/4"	3 1/2"	Zinc-Plated Steel	00000000	0000
No. 3	No. 12, 1/4"	4"	Zinc-Plated Steel	00000000	0000
No. 3	No. 12, 1/4"	6"	Zinc-Plated Steel	00000000	0000

Hex Bits for Impact Drivers

Hex Shank

Hex Shank for Power Tools

The toughest bits available, these withstand the shock and twisting force of impact drivers.

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.

Diamond-coated bits have added wear resistance.

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

1/4" Hex Shank Size
Size	Overall Lg.	Material		Each
1/8"	1"	Steel	0000000	00000
9/64"	1"	Steel	0000000	0000
5/32"	1"	Steel	0000000	0000
3/16"	1"	Steel	0000000	0000
7/32"	1"	Steel	0000000	0000
1/4"	1"	Steel	0000000	0000
3 mm	1"	Diamond-Coated Steel	0000000	0000
4 mm	1"	Diamond-Coated Steel	0000000	0000
5 mm	1"	Diamond-Coated Steel	0000000	0000
6 mm	1"	Diamond-Coated Steel	0000000	0000
1/4" Hex Shank Size for Power Tools
1/8"	2"	Steel	0000000	0000
9/64"	2"	Steel	0000000	0000
5/32"	2"	Steel	0000000	0000
3/16"	2"	Steel	0000000	0000
7/32"	2"	Steel	0000000	0000
1/4"	2"	Steel	0000000	0000
3 mm	2"	Steel	0000000	0000
4 mm	2"	Diamond-Coated Steel	0000000	0000
5 mm	2"	Diamond-Coated Steel	0000000	0000
6 mm	2"	Diamond-Coated Steel	0000000	0000

Torx Bits for Impact Drivers

Hex Shank

Hex Shank for Power Tools

Torx Drive

The toughest bits available, these withstand the shock and twisting force of impact drivers.

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

Diamond-coated bits have added wear resistance.

1/4" Hex Shank Size
Size	Overall Lg.	Material		Each
T10	1"	Diamond-Coated Steel	0000000	00000
T15	1"	Diamond-Coated Steel	0000000	0000
T20	1"	Diamond-Coated Steel	0000000	0000
T25	1"	Diamond-Coated Steel	0000000	0000
T27	1"	Steel	0000000	0000
T30	1"	Diamond-Coated Steel	0000000	0000
T40	1"	Diamond-Coated Steel	0000000	0000
1/4" Hex Shank Size for Power Tools
T10	2"	Steel	0000000	0000
T15	2"	Steel	0000000	0000
T20	2"	Diamond-Coated Steel	0000000	0000
T25	2"	Diamond-Coated Steel	0000000	0000
T27	2"	Steel	0000000	0000
T30	2"	Diamond-Coated Steel	0000000	0000
T40	2"	Diamond-Coated Steel	0000000	0000

Pozidriv® Bits for Impact Drivers

Hex Shank

Hex Shank for Power Tools

The toughest bits available, these withstand the shock and twisting force of impact drivers.

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

Diamond-coated bits have added wear resistance.

1/4" Hex Shank Size
Size	For Screw Size	Overall Lg.	Material		Each
No. 1	No. 2, No. 3, No. 4	1"	Diamond-Coated Steel	0000000	00000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	1"	Diamond-Coated Steel	0000000	0000
No. 3	No. 12, 1/4"	1"	Diamond-Coated Steel	0000000	0000
1/4" Hex Shank Size for Power Tools
No. 1	No. 2, No. 3, No. 4	2"	Steel	0000000	0000
No. 2	No. 5, No. 6, No. 7, No. 8, No. 9, No. 10	2"	Diamond-Coated Steel	0000000	0000
No. 3	No. 12, 1/4"	2"	Diamond-Coated Steel	0000000	0000

Square Bits for Impact Drivers

Hex Shank

Hex Shank for Power Tools

The toughest bits available, these withstand the shock and twisting force of impact drivers. They're designed for screws with a square recess in the head and 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.

Diamond-coated bits have added wear resistance.

1/4" Hex Shank Size
Size	For Screw Size	Overall Lg.	Material		Each
No. 1	No. 5, No. 6, No. 7	1"	Steel	0000000	00000
No. 2	No. 8, No. 10	1"	Diamond-Coated Steel	0000000	0000
No. 3	No. 12, No. 14, 1/4"	1"	Diamond-Coated Steel	0000000	0000
1/4" Hex Shank Size for Power Tools
No. 1	No. 5, No. 6, No. 7	2"	Steel	0000000	0000
No. 2	No. 8, No. 10	2"	Diamond-Coated Steel	0000000	0000
No. 3	No. 12, No. 14, 1/4"	2"	Diamond-Coated Steel	0000000	0000

Fastener-Holding Nutdriver Bits for Impact Drivers

External Hex

The toughest bits available, these withstand the shock and twisting force of impact drivers. They have a magnet that holds steel hex nuts and cap screws in place. The groove in the shank fits directly into power tools.

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

		Overall
Size	Bolt Clearance	Lg.	OD	Fastener-Holding Mechanism	Material		Each
1/4" Hex Shank Size for Power Tools
3/16"	1/16"	1 5/8"	0.438"	Magnet	Steel	0000000	00000
1/4"	1/8"	1 5/8"	0.438"	Magnet	Steel	0000000	0000
5/16"	1/8"	1 5/8"	0.5"	Magnet	Steel	0000000	0000
3/8"	1/8"	1 3/4"	0.563"	Magnet	Steel	0000000	0000
7/16"	3/16"	1 3/4"	0.625"	Magnet	Steel	0000000	0000

Bit Assortments for Impact Drivers

Phillips

Torx

Hex

Pozidriv®

The toughest bits available, these withstand the shock and twisting force of impact drivers. Also known as insert bits, use with a bit adapter in power tools.

1/4" Hex Shank Size
No. of Pieces	Components Included	Bits Included	Adapters Included	Bit-Holding Mechanism	Material	Container Type		Each
10	9 Bits 1 Adapter	Phillips: No. 2 (1" O'all Lg.)—3 ea. Phillips: No. 3 (1" O'all Lg.)—1 ea. Torx: T25 (1" O'all Lg.)—3 ea. Torx: T30, T40 (1" O'all Lg.)—1 ea.	1/4" Female Hex × 1/4" Male Hex for Power Tools	__	Diamond-Coated Steel	Plastic Case	0000000	000000
30	29 Bits 1 Adapter	Phillips: No. 1 (1" O'all Lg.)—2 ea. Phillips: No. 2 (1" O'all Lg.)—3 ea. Phillips: No. 3 (1" O'all Lg.)—2 ea. Hex: 3 mm, 4 mm, 5 mm, 6 mm (1" O'all Lg.)—1 ea. Torx: T10, T15 (1" O'all Lg.)—1 ea. Torx: T20, T30, T40 (1" O'all Lg.)—2 ea. Torx: T25 (1" O'all Lg.)—3 ea. Pozidriv®: No. 2 (1" O'all Lg.)—3 ea. Pozidriv®: No. 1, No. 3 (1" O'all Lg.)—2 ea.	1/4" Female Hex × 1/4" Male Hex for Power Tools	Magnet, Retaining Ring	Diamond-Coated Steel	Plastic Case	0000000	000000

Bit Adapters for Impact Wrenches

Designed to withstand high torque and force, these adapters fit the square drive on impact wrenches. They accept hex-shank bits (also known as insert bits).

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

With Retaining Ring
Square Drive Size	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
1/4"	Hex	1/4"	1"	Steel	0000000	00000
3/8"	Hex	1/4"	1 3/16"	Steel	0000000	0000
1/2"	Hex	1/4"	1 3/8"	Steel	0000000	00000

Bit Adapters for Impact Drivers

These adapters are designed to withstand the high torque of impact drivers. They have a groove in the shank to fit in the tool’s chuck and accept hex-shank bits (also known as insert bits) as well as hex-shank bits for power tools.

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

With Magnet
Hex Shank Size	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
1/4"	Hex, Hex for Power Tools	1/4"	3"	Steel	0000000	000000

Hex Shank to Power Socket Square Drive and Impact Square Drive Adapters

Ball Detent Socket Retainer

Pin Socket Retainer

Use sockets with tools that accept hex shanks, such as impact drivers and power drills. Made for durability, these sockets are for use with nonimpact power tools in high-volume production and assembly. They are also made to withstand the high torque and force of impact tools.

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

1/4" Square Drive
Hex Shank Size	Overall Lg.	Material	Finish	Socket Retainer Style		Each
1/4"	2"	Steel	__	Ball Detent	00000000	00000
1/4"	3"	Steel	__	Ball Detent	00000000	0000
1/4"	3 7/8"	Steel	__	Ball Detent	00000000	0000
1/4"	4"	Steel	Black	Pin	0000000	0000
1/4"	6"	Steel	Black	Pin	0000000	0000
3/8" Square Drive
1/4"	2"	Steel	__	Ball Detent	00000000	0000
1/4"	2"	Steel	Black	Pin	0000000	0000
1/4"	4"	Steel	Black	Pin	0000000	0000
1/4"	6"	Steel	Black	Pin	0000000	0000
7/16"	2 3/4"	Steel	Black	Pin	0000000	00000
1/2" Square Drive
7/16"	2 3/4"	Steel	Black	Pin	00000000	0000
7/16"	5"	Steel	Black	Pin	0000000	00000
5/8"	2 3/4"	Steel	Black	Pin	00000000	00000