8.0 mm Drill Bits | McMaster-Carr

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Hex	Slotted	Phillips

Torx	Square	External Hex

Pozidriv®	Tamper- Resistant Torx	Drilled Spanner

Tamper- Resistant Hex

	System of Measurement System of Measurement

Inch

Metric

	Size Size	Show

8 mm

	Size Size	Hide

	Hex Shank Size Hex Shank Size

1/4"

5/16"

	Driver Style Driver Style


Bit	Shaft

	Shank Type Shank Type

	Hex
	Quick- Change Hex

	Number of Pieces Number of Pieces

100

	Tip Style Tip Style


Standard	Ball

	Individual/Set Individual/Set

Individual

Set

	Overall Length Overall Length

	Material Material

Steel

	Container Type Container Type

Plastic Caddy

Plastic Case

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

RoHS Compliant

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

REACH Compliant

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Access Angle Maximum Access Angle

25°

	Bolt Clearance Bolt Clearance

1/8"

9/16"

	Bit Material Bit Material

High-Speed Steel

	Fastener-Holding Mechanism Fastener-Holding Mechanism

Magnet

	Overall Diameter Overall Diameter

1/2"

	Finish Finish

Phosphate Coated

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19 Products

Hex Bits

Hex Shank

Hex Shank for Power Tools

These multipurpose bits are strong and durable.

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	Overall Lg.	Material		Each
8 mm	1"	Steel	0000000	00000
1/4" Hex Shank Size for Power Tools
8 mm	2"	Steel	0000000	0000
5/16" Hex Shank Size
8 mm	1 1/4"	Steel	0000000	0000

Ball-End Hex Bits

Hex Shank

Hex Shank for Power Tools

When you don't have exact alignment between the fastener and the tool, the ball end allows angled entry to turn screws in hard-to-reach areas.

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	Overall Lg.	Max. Access Angle	Material		Each
8 mm	1 1/2"	25°	Steel	0000000	00000
1/4" Hex Shank Size for Power Tools
8 mm	3"	25°	Steel	0000000	0000

Tamper-Resistant Hex Bits

Hex Shank

Hex Shank for Power Tools

An opening at the tip accommodates the pin in the recess of tamper-resistant hex screws. These are also known as pin-in-hex or pin-in-socket bits.

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	Overall Lg.	Material		Each
8 mm	1"	Steel	0000000	00000
1/4" Hex Shank Size for Power Tools
8 mm	2"	Steel	0000000	0000

Fastener-Holding Nutdriver Bits

Hex Shank

Hex Shank for Power Tools

External Hex

A mechanism inside the bit holds hex nuts and cap screws in place.

Bits with magnet hold steel fasteners.

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.

		Overall
Size	Bolt Clearance	Lg.	OD	Fastener-Holding Mechanism	Material		Each
1/4" Hex Shank Size
8 mm	1/8"	1 1/8"	0.5"	Magnet	Steel	00000000	00000
1/4" Hex Shank Size for Power Tools
8 mm	1/8"	1 5/8"	0.5"	Magnet	Steel	0000000	0000

Nutdriver Bits

Hex Shank for Power Tools

External Hex

Also known as nut setters, these bits turn hex nuts and cap screws.

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

		Overall
Size	Bolt Clearance	Lg.	OD	Material		Each
1/4" Hex Shank Size for Power Tools
8 mm	9/16"	2 5/8"	0.5"	Steel	0000000	00000

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

1/4" Hex Shank Size—Steel
No. of Pieces	Components Included	Bits Included	Adapters Included	Drive Tools Included		Each
29	26 Bits 2 Adapters 1 Drive Tool	Phillips: No. 1, No. 3 (1" O'all Lg.)—1 ea. Phillips: No. 2 (1" O'all Lg.)—2 ea. Slotted: 3/16", 1/4", 9/32" (1" O'all Lg.)—1 ea. Hex (Inch): 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): 2 mm, 2.5 mm, 3 mm, 4 mm 5 mm, 6 mm, 8 mm (1" O'all Lg.)—1 ea.	1/4" Male Square Drive × 1/4" Hex Shank Adapter 2 1/8" Lg. Bit Adapter for Power Tools	7 3/4" Lg. Bit Screwdriver	00000000	000000
100	96 Bits 4 Adapters	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. 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. 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. 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. Torx: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27 T30, T40, T45, T50, T55 (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. Square: No. 0, No. 1, No. 2, No. 3, No. 4 (1" O'all Lg.)—1 ea. Pozidriv®: No. 1, No. 2, No. 3 (1" O'all Lg.)—1 ea. Drilled Spanner: No. 4, No. 6, No. 8, No. 10 No. 12, 1/4" (1" O'all Lg.)—1 ea. Screw-In Hook Driver Bit—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	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. 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. Torx: T5, T6, T7, T8, T9, T10, T15, T20, T27 T30, T40 (2" O'all Lg.)—1 ea. Torx: T25 (2" O'all Lg.)—2 ea. Square: No. 0, No. 1, No. 2, No. 3 No. 4 (2" O'all Lg.)—1 ea.	__	__	000000	000000

Hex Bit Sets

Hex Shank

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		Each
7 Bits	Hex: 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm (1" O'all Lg.)	Steel	0000000	000000

Ball-End Hex Bit Sets

Hex Shank

Hex Shank for Power Tools

When you don't have exact alignment between the fastener and the tool, the ball end allows angled entry to turn screws in hard-to-reach areas.

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	Max. Access Angle	Material	Container Type		Each
9 Bits	Hex: 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm (1" O'all Lg.) Hex: 8 mm, 10 mm, 12 mm (1 1/2" O'all Lg.)	25°	Steel	Plastic Caddy	0000000	000000
1/4" Hex Shank Size for Power Tools
9 Bits	Hex: 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm (3" O'all Lg.)	25°	Steel	__	0000000	00000

Tamper-Resistant Hex Bit Sets

Hex Shank

Hex for Power Tools

An opening at the tip accommodates the pin in the recess of tamper-resistant hex screws. These are also known as pin-in-hex or pin-in-socket bits

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
6 Bits	Tamper-Resistant Hex: 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm (1" O'all Lg.)	Steel	Plastic Caddy	0000000	000000
1/4" Hex Shank Size for Power Tools
6 Bits	Tamper-Resistant Hex: 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm (2" O'all Lg.)	Steel	Plastic Caddy	0000000	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.

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

Hex
Drive Size	Overall Lg.	Max. Access Angle	Material	Finish		Each
8 mm	7 13/16"	25°	Steel	Black Phosphate Coated	0000000	00000