Electro Hardware MMF1317M0916M25 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MMF1317M0916M25 is a male-female hex circuit board standoff designed to separate and support printed circuit boards in electronic assemblies. Machined from grade 303 stainless steel with a bright uncoated finish, it meets the QQ-S-763 fastener standard. The M2.5 x 0.45 metric thread runs on both the male pin end and the female threaded bore, allowing boards to be stacked or mounted with consistent spacing. Overall length is 16.97 mm (0.668 inches) with a hex body measuring 13.00 mm (0.512 inches) and a width across flats of 4.50 mm (0.177 inches). Electronics assemblers, PCB technicians, and industrial maintenance electricians use this standoff wherever corrosion resistance and dimensional precision are required.

This standoff is suited for use in electronic control panels, HVAC control boards, industrial enclosures, and similar low-voltage circuit board assemblies that require reliable board-to-board or board-to-chassis spacing. The metric M2.5 x 0.45 thread size is common in compact PCB layouts. Its stainless steel construction makes it appropriate for environments where mild corrosion resistance is a factor. Thread depth on the female end is 4.80 mm (0.189 inches) and thread length on the male end is 3.97 mm (0.156 inches), providing defined engagement depth for consistent torque and pull-out resistance during assembly.

Key Features

• Grade 303 stainless steel construction meets QQ-S-763 fastener standard
• M2.5 x 0.45 metric thread on both male pin and female bore ends
• Hex body shape allows standard hex driver or wrench installation
• Bright uncoated finish for bare metal corrosion resistance without added coating thickness
• Length tolerance of -0.150 mm to +0.150 mm ensures consistent board spacing
• Overall weight of approximately 0.012 pounds per piece - negligible panel load

Compatibility

Designed as a metric M2.5 x 0.45 male-female hex standoff for use in circuit board assemblies and electronic enclosures requiring QQ-S-763 compliant stainless steel hardware.

Installation Notes

Installation is typically performed by electronics assemblers or electricians working on control board assemblies. Power down and de-energize all circuits before installing or removing standoffs from live control boards. Use an appropriately sized hex driver or nut driver matched to the 4.50 mm width across flats to avoid rounding the hex body. Verify female thread engagement depth against the mating fastener to ensure full thread capture without bottoming out.