Electro Hardware THN5007M01F16 Brass Knurled Thumb Nut 1/4-20

Product Description

The ELECTRO HARDWARE THN5007M01F16 is a round knurled thumb nut machined from Grade B633 brass with a 1/4-20 UNC thread. The knurled head profile allows hand-tightening without tools, making it well suited for panel fastening, fixture adjustment, and equipment assembly applications where frequent removal is required. At 0.375 inches overall height and a 0.5625 inch head diameter, this is a compact fastener with a clean, uncoated bright finish. Electricians, HVAC technicians, plumbers, and general trade professionals use this style of thumb nut wherever a hand-operated fastener is preferred over a hex or slotted fastener.

This thumb nut is intended for use in light-duty mechanical assembly where hand-adjustment access is a priority. Typical applications include control panel covers, instrumentation enclosures, equipment access doors, and fixture mounting points across residential and commercial trade environments. The 1/4-20 UNC thread is one of the most common unified coarse thread sizes in North American trade work, and the brass construction makes this nut appropriate for environments where corrosion resistance or non-magnetic properties are needed.

Key Features

• Grade B633 brass construction provides corrosion resistance and non-sparking characteristics
• Round knurled head profile allows secure hand-tightening without tools
• 1/4-20 UNC thread is compatible with standard unified coarse thread fastener systems
• Bright uncoated finish with 0.5625 inch head diameter and 0.375 inch overall height
• Meets QQ-B-626B Comp 22 standard for brass fastener material
• Compact profile suits panel, enclosure, and fixture assembly in tight clearance situations

Compatibility

Designed as a standard 1/4-20 UNC thread thumb nut for use in mechanical assemblies, control enclosures, and equipment panels requiring a hand-operated brass fastener.

Installation Notes

Installation does not require specialized tools; hand-tighten the nut onto any 1/4-20 UNC threaded stud or bolt. De-energize and lock out electrical panels or equipment before accessing enclosures where this fastener is used. Avoid over-torquing by hand, as brass is softer than steel and the thread can be damaged by excessive force. Verify mating thread condition before installation to avoid cross-threading.