3/8 Inch Drive x 19 mm Deep 6-Point Impact Socket BoltsandNuts.com Size #4-40

Size #4-40

Part Number: 100ESRSS

US Patent #D514771 | #D7287285

Part Number: BIT-DMS04-1102

Tekton Universal Joint Shallow 6-Point Impact Sockets have a compact design for tight spaces

3/8 Inch Drive x 19 mm Deep 6-Point Impact Socket BoltsandNuts.com Size #4-40Size is marked both with a high visibility laser marking and a permanent stamped marking that won't wear off Deep 6 point socket opening provides an exact fit for hex fasteners Radiused corners prevent fastener round off by applying force to a fastener's flat sides, rather than its corners Interior socket well extends far into the socket, which allows for better fastener engagement in more situations Meets a minimum of 1. 3 times the ANSI ASME