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 |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR ASTM B633,TYPE 1,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR ASTM B633,TYPE 1,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL |
| CQFM | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM OVERALL AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| AASK | HEAD STYLE | UNDERCUT HEXAGON |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A449,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR GM 300-M MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| ZZZK | SPECIFICATION/STANDARD DATA | 81349-MIL-B-45912 GOVERNMENT SPECIFICATION AND 96906-MS35764 REV D/INACTIVE/ GOVERNMENT STANDARD |
| AASA | THREAD LENGTH | 1.594 INCHES MINIMUM AND 1.750 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AATB | WIDTH BETWEEN FLATS | 0.985 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| AAUM | LOCKING FEATURE | DISTORTIONS BEARING SURFACE OF HEAD |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASU | HEAD HEIGHT | 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 16 |
| AAJD | THREAD CLASS | 2A |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL OR ZINC OVERALL |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | B COMPOSITION |
| CQBC | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| AASB | FASTENER LENGTH | 1.670 INCHES MINIMUM AND 1.750 INCHES MAXIMUM |
| ZZZW | DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY OPTIONAL ZINC COATED SURF. TREAT. |