Value Collection MS51958-81B 1/4-28 Pan Head Phillips Machine Screw

Product Description

The VALUE COLLECTION MS51958-81B is a 1/4-28 unified fine thread machine screw designed for secure fastening in applications that demand corrosion resistance and consistent dimensional accuracy. Built from 18-8 stainless steel with a black oxide finish, this pan head screw measures 3/4 inches in length under head and is driven with a Phillips driver. The MS51958 fastener standard governs its geometry, making it a recognized choice for aerospace, military, and industrial maintenance applications. At 0.0144 pounds per piece, it is a lightweight component suited for assemblies where weight and finish matter.

This screw is used in a wide range of commercial and industrial settings, including equipment enclosures, control panel assembly, HVAC component mounting, and general metal fabrication. The pan head profile provides a low-profile clamping surface with a wide bearing area. The black oxide coating adds mild corrosion resistance while reducing light reflection in exposed assemblies. Technicians and assemblers across mechanical, electrical, and HVAC trades commonly specify this fastener type. It ships in a minimum order quantity of 10 pieces.

Key Features

• 1/4-28 unified fine thread for higher thread engagement in thin materials
• Pan head geometry delivers broad bearing surface without sharp edges
• Phillips drive compatible with standard hand and power drivers
• 18-8 stainless steel construction resists corrosion in moderate environments
• Black oxide finish reduces reflectivity and adds surface protection
• Conforms to MS51958 fastener standard for dimensional consistency

Compatibility

Designed as an OEM-style replacement or service fastener for any assembly specifying a 1/4-28 x 3/4-inch pan head Phillips machine screw to the MS51958 standard.

Installation Notes

Installation should be performed by a qualified technician or mechanic familiar with the assembly being serviced. Power down or de-energize any equipment before fastener replacement in electrical or control panel environments. Use a correctly sized Phillips driver bit to avoid cam-out and head damage on stainless fasteners. Do not exceed the recommended clamp load for the mating material, as stainless steel fasteners have different galling characteristics than carbon steel hardware.