Truss head screw (トラス小ねじ) has a rounded head shape. Compared with a pan head screw (ナベ小ねじ), the head height is lower while the head diameter is larger — this is its main characteristic.
Because the outside diameter of the truss head is larger than that of other small screws, the contact area with the material is also greater, resulting in better anti-loosening performance.
※ Applicable standards currently supplied by our company:
JIS B 1111 付属書JA、GB406、ANSI/ASME B18.6.3
Available Materials
Available Surface Treatments
