FF-S-200A, FEDERAL SPECIFICATION: SETSCREWS: HEXAGON SOCKET AND SPLINE SOCKET, HEADLESS (24 OCT 1969)
FF-S-200A, FEDERAL SPECIFICATION: SETSCREWS: HEXAGON SOCKET AND SPLINE SOCKET, HEADLESS (24 OCT 1969)., This specification covers hexagon socket and spline socket headless setscrews.