• Ko-ken 3/8" Z-Series Universal NUT GRIP Socket Set (6-Piece) Front View
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Ko-ken 3/8" Z-Series Universal NUT GRIP Socket Set (6-Piece)

$328
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SKU: RS3441MZ/6

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    Ko-ken 3/8" Z-Series Universal NUT GRIP Socket Set (6-Piece) Front View

    Ko-ken 3/8" Z-Series Universal NUT GRIP Socket Set (6-Piece)
    Pinless Universal + Non-Magnetic Nut Holding

    Pinless Universal + Non-Magnetic Nut Holding

    A pro-grade 3/8" drive universal socket set built for tight access and fast, secure fastener handling. The Z-Series pinless universal design spreads load around the socket for durability, while NUT GRIP technology holds nuts/bolts in place without magnets—helpful when you’re working over engine bays, bellhousings, frames, or anywhere dropping hardware is a nightmare.

    Specs

    Spec

    Detail

    Type

    Z-Series Universal NUT GRIP Socket Set

    Drive Size

    3/8" square

    Output Type

    6-point

    Measurement System

    Metric

    Why Z-Series + NUT GRIP Matters

    • Pinless universal joint design helps distribute load around the circumference for durability (vs traditional pin-type universal designs).
    • NUT GRIP holds nuts/bolts without magnets using a spring ring + opposing ball bearings—reduces dropped hardware and speeds up assembly/disassembly in awkward positions.

    In the Box (6 Sockets)

    • 3441MZ-8 — 8mm (x1)
    • 3441MZ-10 — 10mm (x1)
    • 3441MZ-12 — 12mm (x1)
    • 3441MZ-13 — 13mm (x1)
    • 3441MZ-14 — 14mm (x1)
    • 3441MZ-17 — 17mm (x1)

    Best Use Cases

    • Starting nuts/bolts in blind spots (NUT GRIP helps retain the fastener).
    • Working at angles where a straight socket won’t seat (universal design).
    • Jobs where dropping hardware creates rework (engine bays, shields, brackets, tight housings).

    Quick Tips

    • Seat the socket fully on the fastener before loading the joint.
    • Use steady pressure (avoid sudden impacts) to keep the universal aligned.
    • If a fastener is heavily seized, break it loose with the best-supported setup you can (shortest extension possible), then switch back to the universal for access.