2797921-2: BOLT,EXTERNALLY RELIEVED BODY.
The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440F OVERALL, head_style: HEXAGON, head_height: 0.223 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.372 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN, fastener_length: 1.387 INCHES MINIMUM AND 1.403 INCHES MAXIMUM IN. This part is cataloged in the U.S.
Government catalog under NSN 5306-01-185-5857, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| material | STEEL COMP 440F OVERALL |
| head_style | HEXAGON |
| head_height | 0.223 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN |
| thread_class | 2A A |
| thread_length | 0.372 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN |
| fastener_length | 1.387 INCHES MINIMUM AND 1.403 INCHES MAXIMUM IN |
| hardness_rating | 55.0 ROCKWELL C MINIMUM OVERALL |
| special_features | PAINT ONE COAT OF PRIMER TO MIL-P-23377 OR MMS 425 AND ONE COAT OF LUSTERLESS MATT BLACK NO. 3708 FED STD 595 TO TTE 527 ON HEAD OF SCREW ONLY |
| thread_direction | RIGHT-HAND |
| surface_treatment | PASSIVATE OVERALL |
| width_between_flats | 0.555 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| nominal_thread_diameter | 0.312 INCHES IN |
| NSN | 5306-01-185-5857 |
| HEAD HEIGHT | 0.223 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN |
| FASTENER LENGTH | 1.387 INCHES MINIMUM AND 1.403 INCHES MAXIMUM IN |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD LENGTH | 0.372 INCHES MINIMUM AND 0.408 INCHES MAXIMUM IN |
| HARDNESS RATING | 55.0 ROCKWELL C MINIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| FIRST DIAMETER FROM HEAD | 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| NOMINAL THREAD DIAMETER | 0.312 INCHES IN |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.303 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| HEAD STYLE | HEXAGON |
No substitute or cross-reference records for this part.