Electro Hardware P521M01F21-832 Round Female Standoff 8-32

Product Description

The ELECTRO HARDWARE P521M01F21-832 is a round, fully threaded female standoff used to create fixed spacing between panels, PCBs, enclosures, and structural assemblies. It features an 8-32 thread size with a 1 inch thread depth, an overall length of 0.375 inches, and an outside diameter of 0.25 inches. The standoff is machined from brass and finished with zinc plating in accordance with ASTM B633 Type 1 and QQ-B-626 Comp 22, providing corrosion resistance suitable for indoor electrical and mechanical assemblies. Electricians, panel builders, and electronics technicians commonly install these standoffs when mounting components inside control panels, junction boxes, and equipment enclosures.

This standoff is suited for light-duty fastening applications in residential and commercial electrical enclosures, industrial control panels, and electronic equipment assemblies. The inch-system 8-32 thread is one of the most common thread sizes in North American panel and electronics work, making this standoff a standard hardware item for board-level mounting and component spacing tasks. Its compact 0.375-inch body fits in tight enclosure layouts where space between mounting surfaces is limited.

Key Features

• Fully threaded female interior accepts 8-32 fasteners with a 1 inch thread depth
• Brass construction provides good machinability and moderate corrosion resistance
• Zinc-plated finish meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Round body with 0.25 inch outside diameter fits standard clearance holes
• Length tolerance of -0.005 to +0.005 inches supports precision panel layouts
• Inch-system dimensions for compatibility with standard North American fastener tooling

Compatibility

Designed as a standard inch-system female standoff for use with 8-32 threaded fasteners in PCB mounting, electrical enclosure assembly, and mechanical panel spacing applications.

Installation Notes

Installation is typically performed by electricians or electronics technicians during panel assembly or equipment build. Power down all circuits and de-energize the enclosure before installing standoffs in live panels. Use a hex driver or appropriately sized wrench to seat the standoff without over-torquing, which can crack the brass body or strip threads. Verify clearance hole diameter and mating fastener thread class before assembly to ensure a secure, properly spaced fit.