Part Number
Part Number:
NSN:
NIIN:
Item Name:
BOLT , MACHINE
Definition:
AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION THROUGH HOLES IN ASSEMBLED PARTS AND NORMALLY INTENDED TO BE TIGHTENED OR RELEASED BY TORQUING A NUT. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF ONE NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER OR BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. FOR ITEMS HAVING A GRIP LENGTH PORTION MACHINED TO A TOLERANCE OF 0.0015 INCH (0.038 MM) OR LESS, BOLT, SHEAR. SEE ALSO SCREW, CAP, HEXAGON HEAD AND SCREW, MACHINE.
CAGE Information
| Code | Company |
|---|---|
| 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASU | HEAD HEIGHT | 0.313 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.6232 INCHES MINIMUM AND 0.6241 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| AASB | FASTENER LENGTH | 3.911 INCHES MINIMUM AND 3.931 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| AAJD | THREAD CLASS | 3A |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES GRIP |
| AASA | THREAD LENGTH | 0.456 INCHES MINIMUM AND 0.749 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 41.0 ROCKWELL C MAXIMUM OVERALL |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| CQBC | MINIMUM TENSILE STRENGTH | 9500 POUNDS PER SQUARE INCH |
| AATB | WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM |
| AASK | HEAD STYLE | DISHED HEXAGON |
| ANEE | GRIP LENGTH | 3.062 INCHES MINIMUM AND 3.078 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |