Electro Hardware MMF1311M0321M25 Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MMF1311M0321M25 is a male-female hex circuit board standoff designed to create precise separation between stacked PCBs and mounting surfaces in electronic assemblies. This fastener features an M2.5 x 0.45 metric thread on both the male and female ends, with an overall length of 13.97 mm and a body length of 10.00 mm. The hex body measures 4.50 mm across flats for secure tool engagement. Constructed from brass and finished with zinc plating to ASTM B633 Type 1 and QQ-B-626 Comp 22 standards, this standoff delivers corrosion resistance suitable for industrial electronic enclosures, control boards, and commercial equipment assemblies. Electronics technicians and panel builders are the typical installers.

This standoff is suited for metric circuit board mounting applications in HVAC control panels, electrical enclosures, industrial equipment, and commercial electronics where PCB layering or board-to-chassis spacing is required. The male-female configuration allows for modular stacking, making it appropriate for multi-board assemblies where consistent spacing and secure mechanical registration are critical. The metric M2.5 x 0.45 thread pitch is common in compact control board and sensor module mounting scenarios found across HVAC, electrical, and light industrial equipment platforms.

Key Features

• M2.5 x 0.45 metric thread on both male and female ends for modular stacking capability
• Brass construction with zinc plating meets ASTM B633 Type 1 and QQ-B-626 Comp 22 standards
• Hex body at 4.50 mm across flats allows wrench or socket installation without slippage
• Overall length of 13.97 mm with a thread depth of 4.80 mm for reliable thread engagement
• Length tolerance held to -0.150 to 0.150 mm for consistent PCB stack height
• Minimum order quantity of 10 units suits professional service and assembly applications

Compatibility

Designed as an OEM-style metric standoff for circuit board mounting applications requiring M2.5 x 0.45 male-female hex fasteners in electronic assemblies and control panel builds.

Installation Notes

Installation is typically performed by electronics technicians or panel builders. Always de-energize and discharge any control board or enclosure before servicing PCB hardware. Use an appropriately sized hex wrench or nut driver on the 4.50 mm flats to avoid rounding the body. Do not overtighten, as brass standoffs can be damaged by excessive torque, especially in thin PCB mounting holes.