Proto 3/4'' Drive, 21mm Af Socket Standard 12 Points, Steel Polish Chrome 5521M

• Proto® 12 Point Sockets are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials.
• The TorquePlus™ design is a high performance drive configuration which allows for quick and easy socket engagement to the fastener flats, not the corners.
• The TorquePlus™ configuration employs a radius-corner design, shifting contact area and stress away from the fastener corners and distributing contact stresses over a large area of the socket, minimizing slippage.
• The TorquePlus™ internal design minimizes fastener rounding, helps to extend fastener life, and allows the user to more easily turn worn, rounded, or rusted fasteners.
• Ball detent design.

Specifications

SIZE [MM]21

NUT END OUTSIDE DIAMETER [IN]1-17/64

DRIVE END OUTSIDE DIAMETER [IN]1-19/64

NUT DEPTH [IN]9/16

BOLT CLEARANCE DEPTH [IN]1-5/16

OVERALL LENGTH [IN]2

WEIGHT [LBS]0.40

DRIVE SIZE [IN]3/4

POINT SIZE 12

FINISH Satin

LENGTH TYPE Standard

UNIT OF MEASURE Metric

SPECIFICATION ASME ASME B107.110-2012

SPECIFICATION AS SAE AS955