Home / Proto / Proto J4990-4M 3/8" Hex Bit Socket - 4 mm

Proto J4990-4M 3/8" Hex Bit Socket - 4 mm

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  • Detail

    Proto J4990-4M Includes

    • (1) 3/8" HEX BIT SOCKET - 4 MM

    Proto J4990-4M Features

    • Made using a heat treated alloy for wear-resistance which helps minimize distortion for a long life.
    • Hex opening holds the bit allowing the bit holder to take the torque load.

    Proto J4990-4M Specifications

    SIZE 4 mm
    BIT LENGTH 1-5/8"
    OVERALL LENGTH 2-23/32"
    WEIGHT 0.12 lbs
    DRIVE SIZE 3/8"
    FINISH Full Polish
    LENGTH TYPE Standard
    UNIT OF MEASURE Metric
    TIPS Hex
    SPECIFICATION AS SAE AS4984A
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