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 |
|---|---|
| 19204 | ARMY UNITED STATES DEPARTMENT OF THE |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.188 INCHES MINIMUM FIRST HOLE AND 0.219 INCHES MAXIMUM FIRST HOLE |
| AASA | THREAD LENGTH | 1.125 INCHES MINIMUM |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| AASB | FASTENER LENGTH | 9.830 INCHES MINIMUM AND 9.840 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UN |
| CQFM | HARDNESS RATING | 28.0 ROCKWELL C MINIMUM OVERALL AND 33.0 ROCKWELL C MAXIMUM OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| FEAT | SPECIAL FEATURES | 0.125 IN. W BY 1.000 IN. UNDERCUT LOCATED SURFACE OF HEAD |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 9.630 INCHES MINIMUM FIRST HOLE AND 9.640 INCHES MAXIMUM FIRST HOLE |
| SFTT | SURFACE TREATMENT | CHROMIUM OVERALL |
| AASU | HEAD HEIGHT | 0.840 INCHES NOMINAL |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | HEXAGON |
| MATT | MATERIAL | STEEL COMP 1045 OVERALL OR STEEL COMP 8630 OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 12 |
| AHYM | NOMINAL THREAD DIAMETER | 1.750 INCHES |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | A322 ASSN STD 3RD MATERIAL RESPONSE OVERALL OR ASTM A304 ASSN STD 2ND MATERIAL RESPONSE OVERALL OR ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR A331 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| AATB | WIDTH BETWEEN FLATS | 2.250 INCHES NOMINAL |