Part Number
Part Number:
NSN:
NIIN:
Item Name:
BOLT , EXTERNALLY RELIEVED BODY
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, AND WHOSE UNTHREADED PORTION HAS BEEN MACHINED OR GROUND IN ONE OR MORE PLACES OR OVER ITS ENTIRE LENGTH TO A MAXIMUM DIAMETER LESS THAN THE MINIMUM PITCH DIAMETER OF THE THREAD (EXCLUDES UNDERCUTS FOR THREAD RELIEF). IT IS NO. 10 (0.190 IN.) (5 MM) OR LARGER IN SIZE AND HAS A HEAD WHICH IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER OR DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, INTERNAL WRENCHING AND THUMBSCREW. SEE ALSO SCREW, EXTERNALLY RELIEVED BODY.
CAGE Information
| Code | Company |
|---|---|
| 80254 | TEXTRON LYCOMING INC WILLIAMSPORT PL |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| AASA | THREAD LENGTH | 0.414 INCHES MINIMUM |
| AAWC | FIRST DIAMETER FROM HEAD | 0.381 INCHES MINIMUM AND 0.382 INCHES MAXIMUM |
| AAWF | FOURTH DIAMETER FROM HEAD | 0.316 INCHES MINIMUM AND 0.321 INCHES MAXIMUM |
| AAWD | SECOND DIAMETER FROM HEAD | 0.316 INCHES MINIMUM AND 0.321 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| SFTT | SURFACE TREATMENT | COPPER HEAD |
| AASK | HEAD STYLE | FLAT CHAMFER |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| AASB | FASTENER LENGTH | 2.076 INCHES MINIMUM AND 2.080 INCHES MAXIMUM |
| AAWK | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| AAWL | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 0.850 INCHES MINIMUM AND 0.890 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| AAWM | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIFTH DIAMETER | 1.460 INCHES MINIMUM AND 1.480 INCHES MAXIMUM |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-I-6868 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AAWE | THIRD DIAMETER FROM HEAD | 0.381 INCHES MINIMUM AND 0.382 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| AASU | HEAD HEIGHT | 0.173 INCHES MINIMUM AND 0.178 INCHES MAXIMUM |