Value Collection 91601 4-40 Unc Brass Hex Nut

Product Description

The VALUE COLLECTION 91601 is a 4-40 UNC threaded hex nut manufactured from brass for use with machine screws in light-duty fastening applications. The nut features a right-hand thread direction and an uncoated finish. It measures 0.25 inches across the flats and stands 0.09375 inches (3/32 inches) high. Brass construction provides natural corrosion resistance and good electrical conductivity, making this nut a common choice in electrical panels, instrumentation enclosures, and plumbing fixture assemblies where galling with steel fasteners is a concern. These are sold individually per package, with a minimum order quantity of 100 units.

This hex nut is suited for use in residential and light commercial applications requiring a 4-40 UNC thread engagement. Typical install scenarios include control board standoffs, instrument panel assembly, low-voltage electrical enclosures, and small-diameter plumbing or HVAC component mounting where a brass fastener is specified. Installers in electrical, HVAC, and plumbing trades commonly stock 4-40 hardware for terminal block and sensor bracket work.

Key Features

• 4-40 UNC thread standard with right-hand thread direction
• Brass material offers corrosion resistance and non-sparking properties
• Uncoated finish — no plating to chip or delaminate in service
• Compact profile: 0.25 inches across flats, 3/32 inches high
• Sold in multiples of 100 — suitable for bench stock and bulk fastener inventory

Compatibility

Designed for use with 4-40 UNC machine screws in standard hex nut applications across electrical, HVAC, and instrumentation assemblies.

Installation Notes

Installation requires a wrench or nut driver sized for a 0.25-inch hex flat. Always ensure the mating screw thread standard matches 4-40 UNC before assembly to avoid cross-threading. Brass is softer than steel — do not overtighten, as the threads can strip under excessive torque. Verify that brass is appropriate for the service environment, particularly where dissimilar-metal corrosion could be a concern.