| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.265 INCHES MINIMUM AND |
| 0.315 INCHES MAXIMUM |
| FASTENER LENGTH | 0.740 INCHES NOMINAL |
| MATERIAL | STEEL LOCKING FEATURE |
| ALUMINUM GRIP |
| STEEL CORROSION RESISTING SPRING |
| STEEL CORROSION RESISTING FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | HEAT TREATED CARBON STEEL MFR REF SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| 300 SERIES STAINLESS STEEL MFR REF SINGLE MATERIAL RESPONSE SPRING |
| 400 SERIES STAINLESS STEEL MFR REF SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | NICKEL AND |
| COPPER LOCKING FEATURE |
| PASSIVATE FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BRIGHT NICKEL OVER COPPER FLASH PER ASTM B689 ASSN STD SINGLE TREATMENT RESPONSE LOCKING FEATURE |
| NATURAL FINISH MFR REF SINGLE TREATMENT RESPONSE GRIP |
| ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE FASTENER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL ACCOMMODATED THICKNESS | 0.036 INCHES MINIMUM |
| SPECIAL FEATURES | SHEET METAL, ENGAGED .060, RETRACTED .290;KNURLED CAP;SLOTTED NO.2 PHILLIPS SCREW;FOR USE IN SHEET HARDNESS OF ROCKWELL B 80 OR LESS/BRINELL HARDNESS OF 150 OR LESS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LARGE KNOB,SPRING LOADED CAPTIVE PANEL SCREW |