These are 0.375 (3/8) inch truss head screws designed in U.S.A. by CKK Industries, Inc. They are black oxide coated with TORX T-15 drive. These screws are commonly used in holster attachment mountings, but are excellent for most general uses. They are heavy-duty, well finished, and are very hard to find in US conforming lengths and measurements.
Specifications
Head Type = Truss
Length = 0.375 Inch (from under head)
Overall Length = 0.465 Inch (including head thickness)
Head Diameter = 0.370 Inch
Drive: TORX (T-15)
Coating: Black Oxide
Sold Individually
(1) QTY = (1) Screw