THREAD SERIES DESIGNATOR | UNRC |
NOMINAL THREAD DIAMETER | 0.086 INCHES |
THREAD QUANTITY PER INCH | 56 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.250 INCHES NOMINAL |
FASTENER LENGTH | 0.250 INCHES NOMINAL |
MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURE |
| STEEL FASTENER |
MATERIAL DOCUMENT AND CLASSIFICATION | FF-S-86E FED SPEC 2ND MATERIAL RESPONSE FASTENER |
SURFACE TREATMENT | CADMIUM FASTENER |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TY2CL2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
HARDNESS RATING | 38.0 ROCKWELL C MINIMUM AND |
| 45.0 ROCKWELL C MAXIMUM OVERALL |
MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
SINGLE SHEAR STRENGTH | 665 POUNDS PER SQUARE INCH |
HEAD STYLE | FLAT CHAMFER |
HEAD DIAMETER | 0.134 INCHES MINIMUM AND |
| 0.140 INCHES MAXIMUM |
HEAD HEIGHT | 0.083 INCHES MINIMUM AND |
| 0.086 INCHES MAXIMUM |
INTERNAL DRIVE STYLE | HEXAGON |
WIDTH ACROSS FLATS | 0.078 INCHES NOMINAL |
LOCKING FEATURE | PELLET THREADS |
SPECIFICATION/STANDARD DATA | 80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |