Robertson Screwdrivers | McMaster-Carr

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	For Drive Style For Drive Style	Show

	Square

	For Drive Style For Drive Style	Hide


Slotted	Phillips

Torx	Hex

External Hex	Square

Pozidriv®	Tamper- Resistant Torx

JIS/JCIS	Drilled Spanner

Tamper- Resistant Hex	Torx Plus

Torq-Set®	Tri-Wing®

One Way	Pozidriv® Terminal Screw

Tri-Lobe	Clutch

Triangle	Phillips Terminal Screw

Tamper- Resistant Pentalobe	Six-Flute Spline

Microstix	Pentalobe

Double Square	Tri-Groove

Frearson	Hi-TORQUE

Pentagon	Triple Square

Asymmetrical	Four-Flute Spline

Square Phillips	Tamper- Resistant Square

Tamper- Resistant Phillips	External Torx Plus

RIBE	Hex with Pilot Recess

Mortorq®	Mortorq® Super

	Driver Style Driver Style


Driver	Bit

	System of Measurement System of Measurement

Inch

Metric

in.-lbs.

	Size Size

	Individual/Set Individual/Set

Individual

Set

	Overall Length Overall Length

	Tip Style Tip Style


Standard	Ball

	Grip Style Grip Style


Plain	Ultra Grip

Cushion

	For Bit Hex Shank Size For Bit Hex Shank Size

1/4"

5/16"

	Power Source Power Source

Manual

	Driver Type Driver Type

Standard

Torque

	Number of Pieces Number of Pieces

100

	Number of Sizes Number of Sizes

	For Bit Shank Type For Bit Shank Type

	Hex
	Hex for Power Tools

	Bit-Holding Mechanism Bit-Holding Mechanism

Magnet

Ball Detent

	Torque Adjustability Torque Adjustability

Adjustable

	Maximum Torque Maximum Torque

36 in.-lbs.

4 Nm

	Minimum Torque Minimum Torque

2 in.-lbs.

20 cNm

	Torque Driver Type Torque Driver Type

Torque Limiting

	Shaft Length Shaft Length

	Shaft Material Shaft Material

Steel

Aluminum

	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

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108 Products

Screwdrivers

Ultra-Grip Screwdrivers

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

Ultra-Grip Screwdriver Sets

Sets include an assortment of drivers with soft, contoured handles that provide comfort and the best possible grip for achieving maximum torque.

Ball-End Screwdrivers

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.

Ball-End Screwdriver Sets

The assorted drivers in these sets have a ball end that allows angled entry to turn screws in hard-to-reach areas.

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 IEC, EN, or ASTM standards.

Electrical-Insulating Screwdriver Sets

Sets include assorted drivers with 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.

Screwdrivers for Stainless Steel Screws

Protect your stainless steel screws by using a stainless steel driver. If steel flakes off a standard tool and into the recess, it can lead to rust and contamination. These drivers eliminate that risk.

Bit Screwdrivers

Tight-Clearance Ratcheting Bit Screwdrivers

A ratchet mechanism allows you to drive fasteners when there's little space to move the handle.

Ratcheting Bit Screwdrivers

A ratchet mechanism turns fasteners more quickly than a standard bit driver. Insert a bit into the shaft and a magnet holds it in place.

Electrical-Insulating Bit 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 60900 and IEC 60900.

Reversible-Bit Screwdriver/Nutdrivers

Bits have a different tip at each end and snap into the shaft, which is also a nutdriver.

Adjustable-Length Screwdriver Sets

Press down on the handle’s collar to either adjust the shaft length or remove the shaft and replace it for a different tip. Sets include a handle and multiple reversible shafts.

Screwdriver Bits and Adapters

Square Bits

Strong and durable, these multipurpose bits are for use with bit screwdrivers. They're designed for screws with a square recess in the head and are also known as Robertson bits.

Square Bits for Impact Drivers

The toughest bits available, these withstand the shock and twisting force of impact drivers. Designed for screws with a square recess in the head, they are also known as Robertson bits.

Depth-Limiting Square Bits

An exterior stop collar prevents fasteners from being driven too deep. Use with soft materials such as drywall, wood, and fiberboard.

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.

Reversible Square Bits

Bits have a different size at each end.

Bit Assortments

Assortments contain bits with multiple drive styles.

Square Bit Sets

Also known as Robertson bits these are designed for screws with a square recess in the head.

Torque Screwdriver and Bit Sets

These sets include an adjustable torque driver, bits for different drive styles, and a socket adapter.

Tight-Clearance Screw Starters

The slim body reaches into tight spots to grip and turn screws that are hard to reach or too small to hold by hand.

Square Bit Sockets

These sockets are also known as Robertson bits.