COUNTERSINK ANGLE | 82.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
FASTENER LENGTH | 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
HARDNESS RATING | 80.0 ROCKWELL SUPERFICIAL 15-N MINIMUM OVERALL |
HEAD DIAMETER | 0.445 INCHES MINIMUM AND 0.475 INCHES MAXIMUM |
HEAD STYLE | FLAT COUNTERSUNK |
INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
LOCKING FEATURE | LOCKING TEETH SIDES OF HEAD |
MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
MATERIAL | STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OVERALL |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | G-6047-M(240),FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | PHOSPHATE OVERALL |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.528 INCHES MINIMUM AND 0.633 INCHES MAXIMUM |
THREAD SERIES DESIGNATOR | UNRC |
THREAD QUANTITY PER INCH | 20 |