Part Number
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE UNTHREADED PORTION IS OF A SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001) OF AN INCH (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS ONE INCH (25 MM) OR LESS IN DIAMETER. ITEMS OVER ONE INCH (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN-THOUSANDTHS (0.0015) OF AN INCH (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001) OF AN INCH (0.025 MM) BELOW THE MINIMUM SHANK DIAMETER, BUT NOT BELOW THE MINIMUM MAJOR DIAMETER FOR APPLICABLE CLASS OF FIT, AS SHOWN IN THE SCREW THREAD STANDARDS, FED STD H28 AND/OR OTHER NATIONALLY RECOGNIZED STANDARDS. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER, NOR IS IT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS HAVING CLOSE TOLERANCE, AND FABRICATED FROM MATERIAL HAVING 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH, SEE BOLT, SHEAR. FOR ITEMS FABRICATED FROM MATERIAL HAVING LESS THAN 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH AND NOT HAVING A CLOSE TOLERANCE, SEE BOLT, MACHINE.
CAGE Information
| Code | Company |
|---|---|
| 78286 | SIKORSKY AIRCRAFT CORPORATION |
Federal Supply Class
Title
BOLTS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 6150 OVERALL |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 6150 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-83050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.240 INCHES MINIMUM FIRST HOLE AND 2.270 INCHES MAXIMUM FIRST HOLE |
| AASB | FASTENER LENGTH | 2.355 INCHES MINIMUM AND 2.375 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| AAUR | GRIP DIAMETER | 0.3108 INCHES MINIMUM AND 0.3117 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| CSYM | SURFACE FINISH | 63.0 MICROINCHES GRIP |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| ANEE | GRIP LENGTH | 1.875 INCHES MINIMUM AND 1.891 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASU | HEAD HEIGHT | 0.157 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| AASK | HEAD STYLE | CROWNED HEXAGON |
| 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 |
| AATB | WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| CQBC | MINIMUM TENSILE STRENGTH | 95000 POUNDS PER SQUARE INCH |
| AASA | THREAD LENGTH | 0.313 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| AAUM | LOCKING FEATURE | DETENT BALL GRIP |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |