Technical details

• MS51957 Revision D Table I identifies dash 1 as a cross-recessed pan-head machine screw with 0.0860-56 UNC Class 2A threads and 0.125 in nominal length (+0/-.031 in).
• The table lists 0.1550-0.1670 in head diameter, 0.0530-0.0620 in head height, driver size 1 and 300 lbf minimum tensile load for this nominal size.
• Material code S316 restricts the dated design to Type 316 or 316L corrosion-resistant steel. With no finish code, the drawing specifies passivation.
• These are byte-hashed Revision D design requirements. Current-edition changes, stocked-unit conformity, certification, installation approval and airworthiness were not verified.