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 |
|---|---|
| 81348 | FEDERAL SPECIFICATIONS PROMULGATED B |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASL | HEAD DIAMETER | 1.000 INCHES NOMINAL |
| AASL | HEAD DIAMETER | 1.000 INCHES NOMINAL |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| CQFM | HARDNESS RATING | 286.0 BRINELL STANDARD MINIMUM OVERALL AND 321.0 BRINELL STANDARD MAXIMUM OVERALL |
| AAJD | THREAD CLASS | 3A |
| MATT | MATERIAL | STEEL COMP 8640 OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.188 INCHES NOMINAL FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASU | HEAD HEIGHT | 0.281 INCHES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASA | THREAD LENGTH | 0.875 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 3.250 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.110 INCHES NOMINAL FIRST HOLE |