#1 X 1" Square Insert Bit - 1/4" Hex - 10 Pack

Benchmark Abrasives #1 x 1" Square Insert Bits are professional-grade driver bits built for accurate engagement, dependable torque transfer, and repeated fastening work in construction, maintenance, assembly, woodworking, fabrication, and general shop applications. Each bit is manufactured from heat-treated S2 shock-resistant tool steel hardened to HRc 60 for the strength, toughness, and wear resistance required in demanding screwdriving work.

The #1 square tip is CNC precision-ground to exact dimensions for a tight, consistent fit with compatible #1 square-recess fasteners. Precise tip geometry helps improve contact inside the fastener recess, transfer torque efficiently, and reduce unnecessary slipping or premature wear. A standard 1/4" hex shank makes these compact 1" insert bits easy to use with compatible bit holders, screwdrivers, drills, and other properly equipped driving tools.

Features

• Industrial-quality construction for professional fastening applications
• Heat-treated S2 shock-resistant tool steel for strength and durability
• HRc 60 hardness for dependable wear resistance
• CNC precision-ground #1 square tip for accurate fastener engagement
• Designed for compatible #1 square-recess fasteners
• Precision geometry promotes efficient torque transfer and helps reduce slipping
• Standard 1/4" hex shank for broad holder and driver compatibility
• Compact 1" insert-bit design for controlled screwdriving
• Convenient 10-piece pack for shop, maintenance, assembly, and jobsite use

Applications & Performance

Designed for driving and removing compatible #1 square-recess screws and fasteners in construction, maintenance, assembly, woodworking, fabrication, repair, equipment service, and other professional or DIY fastening applications.

For best performance, match the #1 square tip to the correct fastener recess and keep the bit square to the screw during operation. Proper engagement improves torque transfer and helps reduce fastener damage, slipping, and accelerated bit wear.

Machine Compatibility

Compatible examples include:

• DEWALT® DCD800B drill/driver with a compatible 1/4" insert-bit holder
• DEWALT® DCD805B hammer drill/driver with a compatible 1/4" insert-bit holder; use with hammer action off
• DEWALT® DCF601B screwdriver
• Milwaukee® Models: 3403-20, 2903-20 with a compatible 1/4" insert-bit holder
• Makita® XFD13Z with a compatible 1/4" insert-bit holder
• Bosch® Models: GSR12V-300, GSB12V-300N, GSR12V-300HXN with a compatible 1/4" insert-bit holder; use the GSB12V-300N with hammer action off
• RYOBI® PBLDD01B drill/driver with a compatible 1/4" insert-bit holder

Always make sure the bit or bit holder is fully seated and securely retained before use.

Safety Tips

• Always wear appropriate eye protection and other PPE required for the application.
• Match the #1 square tip to the correct fastener size before applying torque.
• Keep the bit aligned squarely with the fastener to reduce slipping and tip damage.
• Make sure the bit or bit holder is fully seated and securely retained before operating the tool.
• Use controlled speed and torque appropriate for the fastener and work material.
• Inspect bits before use and replace any that are cracked, excessively worn, rounded, or otherwise damaged.
• Follow all operating and safety instructions supplied with the power tool or hand tool.