THE DESTACO STRAIGHT-LINE ACTION CLAMP, MODEL 603-SS, FEATURES A 5/16 INCH THREAD SIZE AND A PLUNGER DIAMETER OF 0.47 INCHES. THE OVERALL DIMENSIONS INCLUDE AN OVERALL HEIGHT OF 3.43 INCHES, AN OVERALL LENGTH OF 4.69 INCHES, AND AN OVERALL WIDTH/DEPTH OF 1.88 INCHES. THE HEIGHT UNDER THE ARM MEASURES 0.97 INCHES (OR 31/32 INCHES), AND THE ARM LENGTH IS 1.28 INCHES. THE FASTENER THREAD SIZE IS 5/16 INCHES.