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 |
|---|---|
| 78286 | SIKORSKY AIRCRAFT CORPORATION |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AATC | EXTENDED WASHER DIAMETER | 0.745 INCHES NOMINAL |
| CBBL | FEATURES PROVIDED | FINISHED HEAD |
| AAJD | THREAD CLASS | 3A |
| AATD | EXTENDED WASHER THICKNESS | 0.055 INCHES NOMINAL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASA | THREAD LENGTH | 0.835 INCHES MINIMUM |
| CQFM | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| AASU | HEAD HEIGHT | 0.325 INCHES NOMINAL |
| ANEE | GRIP LENGTH | 2.535 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.438 INCHES |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-7838A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| CQHQ | MINIMUM YIELD STRENGTH | 180000 POUNDS PER SQUARE INCH |
| AATB | WIDTH BETWEEN FLATS | 0.576 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| AASK | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| AASB | FASTENER LENGTH | 3.370 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |