Value Collection MSTX08080-025BX M8x1.25 Truss Head Screw

Product Description

The VALUE COLLECTION MSTX08080-025BX is a metric machine screw with a truss head and slotted drive, manufactured from 18-8 stainless steel to grade A2. The truss head profile offers a wide, low-profile bearing surface that distributes clamping load across a larger area compared to a standard pan or round head. At M8x1.25 thread size and 80 mm length under head, this fastener suits medium- to heavy-duty assembly work where corrosion resistance is a requirement. The bright, uncoated finish preserves the natural surface of the 18-8 alloy. These screws are sold in a minimum order quantity of 25 and conform to NFE 27128, the French national standard for slotted truss head machine screws.

This screw is used in general mechanical assembly, electrical enclosure fabrication, HVAC equipment mounting, and plumbing fixture installation where metric fasteners and stainless steel corrosion resistance are specified. The slotted drive makes it compatible with standard flat-blade screwdrivers and slotted power bits. The absence of a washer means it installs directly against the mating surface. Truss head geometry is commonly specified where countersinking is not practical and a low head height is preferred over a hex or socket cap style.

Key Features

• M8x1.25 metric thread with 80 mm length measured under the head
• Truss head profile provides wide bearing surface without a separate washer
• Slotted drive accepts standard flat-blade screwdrivers and power bits
• 18-8 stainless steel, grade A2 — suitable for corrosive or wet environments
• Bright, uncoated finish — no plating to flake or contaminate the assembly
• Conforms to NFE 27128 fastener standard

Compatibility

Designed as an NFE 27128-compliant slotted truss head machine screw for metric M8x1.25 threaded assemblies requiring 18-8 A2 stainless steel fasteners. No additional model-specific compatibility data was provided with this SKU.

Installation Notes

Install using a flat-blade screwdriver or slotted bit sized to the M8 head slot to avoid cam-out and head damage. Verify that the mating thread is M8x1.25 before driving; forcing an incorrect thread pitch will gall the stainless steel threads and damage the receiving component. When assembling stainless fasteners into stainless threaded holes, apply an anti-seize compound to reduce the risk of galling. Torque to the value specified in the assembly drawing or equipment service manual — do not exceed the rated clamp load for the joint material.