THREAD SERIES DESIGNATOR | UNC |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
THREAD QUANTITY PER INCH | 13 |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
MATERIAL | STEEL OVERALL |
SURFACE TREATMENT | CADMIUM OR |
| ZINC OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR |
| QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
STYLE DESIGNATOR | SPRING-WING, SHEET METAL, MACHINE SCREW |
WING SPREAD WIDTH | 3.500 INCHES NOMINAL |
LENGTH | 4.000 INCHES NOMINAL |
SPECIAL FEATURES | WING MATERIAL THICKNESS 0.046-0.065 INCHES AS THIS IS HOW MUCH VARIANCE IS ALLOWED IN THE SHEET METAL INDUSTRY. |
NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND |
| A CLASS AND |
| 1 STYLE |
SPEC/STD CONTROLLING DATA | |
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FF-S-92 TY 1 ST 1S |
MANUFACTURERS CODE | 81348 |
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | FFB588 |