Electro Hardware THN5001M01F16 Brass Knurled Thumb Nut

Product Description

The ELECTRO HARDWARE THN5001M01F16 is a round knurled thumb nut machined from Grade B-633 brass with a 2-56 UNC thread. It is designed for hand-tightening applications where tools are not practical or desired, making it a common choice in enclosure panels, instrument assemblies, and light-duty fastening situations. The uncoated bright finish exposes the natural brass surface, which offers inherent corrosion resistance in non-harsh environments. The nut measures 0.25 inches in overall height and 0.25 inches in head diameter, with a base diameter of 0.187 inches. Electricians, electronics technicians, and panel builders install this type of hardware during equipment assembly and field service work.

This thumb nut suits residential and commercial applications where frequent manual adjustment or removal is required. Common use cases include instrument panels, electronic enclosures, test fixtures, and small mechanical assemblies that use 2-56 UNC threaded fasteners. The knurled outer surface provides a secure finger grip during installation and removal without the need for tools. Its compact 0.25-inch head diameter fits in tight panel layouts where standard hex nuts would not be practical.

Key Features

• Grade B-633 brass construction for natural corrosion resistance and machinability
• 2-56 UNC thread standard for compatibility with fine-thread instrument hardware
• Round knurled head profile for positive hand grip and tool-free operation
• Bright uncoated finish with no added plating or coating
• Compact head diameter of 0.25 inches suitable for tight panel layouts
• Meets QQ-B-626B Comp 22 standard

Compatibility

Designed as an OEM-style replacement or standard hardware item for assemblies using 2-56 UNC threaded fasteners requiring a hand-adjustable thumb nut.

Installation Notes

This thumb nut is installed by hand and does not require power tools. Before installing or removing thumb nuts on live electrical enclosures or panels, de-energize the equipment in accordance with applicable NFPA 70 (NEC) lockout/tagout procedures. Avoid overtightening, as brass threads can be damaged by excessive torque. Confirm the mating thread is clean and free of debris before installation.