Electro Hardware MP441M19F16M2.5 Female Hex Standoff M2.5

Product Description

The ELECTRO HARDWARE MP441M19F16M2.5 is a female hex circuit board standoff designed to space and secure printed circuit boards within electronic enclosures and control panels. Made from nylon with a plain, uncoated finish, this standoff uses an M2.5 x 0.45 thread size and measures 21.0 mm in overall length with a 4.5 mm width across flats. The partially threaded design includes a 4.8 mm thread depth. Its lightweight nylon construction resists corrosion and prevents electrical conduction between fastened assemblies, making it a reliable choice for PCB mounting in HVAC control boards, electrical panels, and similar low-voltage electronics applications.

This standoff is suited for metric fastener applications where a nylon, electrically non-conductive spacer is required. Common installation scenarios include mounting control boards in residential and commercial HVAC equipment, securing PCBs inside electrical enclosures, and general electronics assembly. The hex body shape allows for wrench engagement during installation and removal. It conforms to MIL-P-17091B, making it appropriate for applications requiring a documented material and dimensional standard. Sold individually, with a minimum order quantity of 10 units.

Key Features

• M2.5 x 0.45 female thread for metric fastener compatibility
• 21.0 mm overall length with 4.8 mm partial thread depth
• 4.5 mm width across flats — hex body accepts standard wrenching tools
• Nylon construction provides electrical isolation and corrosion resistance
• Plain, uncoated finish suitable for standard indoor PCB mounting environments
• Meets MIL-P-17091B fastener standard
• Tensile strength rated at 16,500 psi

Compatibility

Designed for use with M2.5 x 0.45 metric hardware in PCB standoff applications requiring a nylon female hex spacer conforming to MIL-P-17091B.

Installation Notes

Installation is typically performed by electronics technicians or controls specialists working on PCB assemblies. Power down and de-energize all circuits before installing or removing circuit board standoffs. Use an appropriately sized hex driver or nutdriver that fits the 4.5 mm across-flats dimension to avoid stripping the nylon body. Do not overtighten, as nylon standoffs have lower yield strength than metal equivalents and can crack under excessive torque.