Aircraft Truss Head Machine Screws Guide

Truss heads are typically wider than the heads on other screws and have a slightly rounded surface.

You’ll usually need truss heads when working with sheet metal and other projects that require large holes because the wide head prevents the truss screw from going through the hole. Truss head screws are well suited for sheet metal and other material with large diameter holes due to their wide head. Additionally, because of their low-dome shaped head, these screws make tampering with or removing the head difficult.</p>

AN526 TRUSS HEAD MACHINE SCREWS

Part Number Logic

AN526{Material Type}{Thread}{Drive Type}{Length}

• Material Type
  • ​'-' Denotes Steel - Cadmium Plated 55,000 PSI Tensile Strength.
  • 'C' Deontes Corrosion Resistant (Stainless) Steel.
• Thread
  • ​Standard Thread Sizes - #4-40 = 440, #10-32 = 1032
• Drive Types
  • ​'R' =Cross Recessed (Phillips) Head.
• Length​
  • Denotes 1/6'' per number.  Threfore, 4 = 4/16'' or 1/4'', 48 = 48/16'' or 3''