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The WILLIAMS M-604 is a 6-point standard socket designed for 1/4 inch drive ratchets and extensions. It accepts a 1/8 inch fastener and features a 6-point internal geometry that distributes torque evenly across fastener flats, reducing the risk of rounding under load. At 0.02 pounds, it is a lightweight tool suited for precision work in tight spaces. Electricians, plumbers, HVAC technicians, and general trade professionals reach for this size when working with small fasteners on equipment panels, covers, and fixtures.
This socket fits standard 1/4 inch drive tool sets and is appropriate for light-duty fastening tasks encountered in residential and commercial service work. The 1/8 inch size is commonly used on small set screws, machine bolts, and access panel hardware found across HVAC equipment, electrical enclosures, and plumbing fixtures. It is sold individually, making it a practical replacement or addition to an existing socket set.
Designed for use with any standard 1/4 inch drive ratchet, extension bar, or torque wrench. Compatible with 1/8 inch hex fasteners in general trade and service applications.
This socket is installed and removed by hand using a 1/4 inch drive ratchet or extension. Always de-energize electrical equipment before loosening or tightening fasteners on panels or enclosures. Ensure the socket is fully seated on the fastener before applying torque to avoid rounding. Use only within the torque range appropriate for 1/4 inch drive tools.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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