Electro Hardware MP445M09F16M3 Female Hex Standoff M3x0.5

Product Description

The ELECTRO HARDWARE MP445M09F16M3 is a female hex circuit board standoff designed to space and mount printed circuit boards within electronic enclosures and control panels. Machined from 303 stainless steel with a plain, bright uncoated finish, this standoff accepts an M3 x 0.5 thread and provides a secure threaded female receiver for board-mounting fasteners. The overall length is 23.0 mm (approximately 0.906 inches), with a thread depth of 6.4 mm (approximately 0.252 inches) and a hex body measuring 4.5 mm (approximately 0.177 inches) across flats. The partially threaded design and hex profile allow easy installation and torque application with standard hex drivers or wrenches. This hardware meets QQ-S-763 stainless steel fastener standards.

This standoff is used in residential and commercial control panel assemblies, HVAC equipment circuit boards, industrial enclosures, and any application requiring a rigid, corrosion-resistant spacer between a PCB and a mounting surface. The M3 x 0.5 metric thread is common in light-duty electronic mounting applications. Electricians, controls technicians, and electronics assembly professionals typically install this component during panel builds or board replacements. Minimum order quantity is 10 pieces.

Key Features

• Female hex body with M3 x 0.5 internal thread for standard metric fasteners
• 303 stainless steel construction meets QQ-S-763 fastener standard for corrosion resistance
• Overall length of 23.0 mm (approximately 0.906 inches) with a 6.4 mm (approximately 0.252 inches) thread depth
• 4.5 mm (approximately 0.177 inches) hex width across flats for wrench or driver engagement
• Plain, bright uncoated finish — no coating to interfere with tight tolerances
• Length tolerance of -0.13 mm to +0.13 mm for consistent board spacing

Compatibility

Designed as an OEM-style metric standoff for circuit board mounting applications requiring an M3 x 0.5 female threaded hex spacer in stainless steel.

Installation Notes

Installation is performed by electricians or controls technicians during panel assembly or board service. De-energize all circuits before installing or removing circuit board hardware in any control enclosure. A hex driver or small open-end wrench sized to 4.5 mm across flats is appropriate for seating this standoff. Follow applicable NEC or equipment manufacturer guidelines for circuit board mounting clearances and fastener torque in control panel assemblies.