Klein Tools 631M Magnetic Nut Driver Set 7-piece

Product Description

The KLEIN TOOLS 631M is a 7-piece magnetic nut driver set built for electricians, HVAC technicians, and other trade professionals who need fast, reliable fastener work across a wide range of applications. The set includes the most commonly used nut driver sizes on 3-inch full hollow shafts, allowing the driver to slide over long bolts and threaded studs without obstruction. Rare-Earth magnetic tips hold fasteners securely during placement. Cushion-Grip handles deliver improved torque transfer and comfort during extended use, with internal flanges providing a solid, twist-resistant shaft anchor. Each handle features Klein's Tip-Ident color-coded end caps, making it easy to identify the correct size by sight or feel in a crowded tool bag or pouch.

This set is suited for residential and commercial electrical, HVAC, and general mechanical service work where quick nut driver changes and long-bolt clearance are routine. The 7 included sizes cover the most frequently encountered hex fastener dimensions in panel work, equipment installation, and control-box servicing. Individual drivers in this set correspond to Klein catalog numbers 630-3/16M, 630-1/4M, 630-5/16M, 630-11/32M, 630-3/8M, 630-7/16M, and 630-1/2M. Note that the 3/16-inch driver does not include a hollow shaft.

Key Features

• Rare-Earth magnetic tips hold fasteners securely for single-hand placement on long bolt and stud applications
• Full hollow shafts on 6 of 7 drivers slide freely over extended bolts and threaded rod
• Tip-Ident color-coded handle ends allow fast size identification by sight or feel
• Cushion-Grip handles provide enhanced torque transfer and reduced hand fatigue
• Internal handle flanges create a solid, twist-resistant shaft anchor under load
• Manufactured in the USA

Compatibility

Designed for use with standard hex-head fasteners in electrical, HVAC, and mechanical service applications. Individual drivers in this set are Klein Tools catalog numbers 630-3/16M, 630-1/4M, 630-5/16M, 630-11/32M, 630-3/8M, 630-7/16M, and 630-1/2M.

Installation Notes

Intended for use by qualified trade professionals including licensed electricians and HVAC technicians. De-energize all circuits and follow applicable NFPA 70 lockout/tagout procedures before working inside electrical panels or equipment enclosures. Inspect magnetic tips periodically and remove accumulated metal debris to maintain holding force. Do not use nut drivers as pry bars or impact drivers.