| FASTENER LENGTH | 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.178 INCHES MINIMUM AND 0.196 INCHES MAXIMUM |
| HEAD STYLE | SQUARE |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OR SAE J403 UNS G10100 THRU G10200 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1010 OR STEEL COMP 1020 OVERALL |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 4 STYLE AND 1/4.IN SIZE AND 1/2IN. LENGTH AND 4 TABLE |
| POINT STYLE | CUP |
| SPECIFICATION/STANDARD DATA | 81348-FF-S-210 GOVERNMENT SPECIFICATION AND 80204-ANSI B18.6.2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 24617-102870 MANUFACTURERS STANDARD AND 11757-500568 MANUFACTURERS STANDARD |
| WIDTH BETWEEN FLATS | 0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| SUPPLEMENTARY FEATURES | NATURAL FIN. UNPLATED/UNCOATED |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNC |