| FASTENER LENGTH | 0.430 INCHES NOMINAL |
| HEAD HEIGHT | 0.107 INCHES MAXIMUM AND 0.088 INCHES MINIMUM |
| HEAD STYLE | ROUND |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL | CAPTIVE SCREW: STEEL; SADDLE WASHER: STEEL AND HEX NUT: BRASS |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | HEX EXTENDER KIT |
| III SUPPLEMENTARY FEATURES | COMPRISED OF CAPTIVE SCREW, SADDLE WASHER AND HEX NUT |
| NOMINAL THREAD DIAMETER | CAPTIVE SCREW: 0.112 INCHES; HEX NUT: 0.112 INCHES |
| WIDTH BETWEEN FLATS | 0.197 INCHES NOMINAL |
| SURFACE TREATMENT | CAPTIVE SCREW: ZINC; SADDLE WASHER: ZINC AND HEX NUT: NICKEL PLATED |
| THREAD CLASS | CAPTIVE SCREW: 2A; HEX NUT: 2B |
| THREAD QUANTITY PER INCH | CAPTIVE SCREW: 40THREADS PER INCH; HEX NUT: 40 THREADS PER INCH |
| THREAD SERIES DESIGNATOR | CAPTIVE SCREW: UNC AND HEX NUT: UNC |