#8-32 x 5/8" Phillips Drive Pan Head Zinc Finish Steel Machine Screw / THREAD LENGTH: 0.625 INCHES NOMINAL FASTENER LENGTH: 0.625 INCHES NOMINAL HEAD STYLE: A23 PAN INTERNAL DRIVE STYLE: B1 CROSS RECESS TYPE 1 END ITEM IDENTIFICATION: 3655-01-556-1083, N2 - NITROGEN GENERATING SYSTEM NOMINAL THREAD DIAMETER: 0.164 INCHES THREAD QUANTITY PER INCH: 32 PART NAME ASSIGNED BY CONTROLLING AGENCY: SCREW, 8-32 X 5/8 INCH SPECIAL FEATURES: NHA FILTER ASSY, 800-550 THREAD SERIES DESIGNATOR: UNC