Part Number
Definition:
A HIGH STRENGTH, 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH EXTERNALLY THREADED FASTENER DESIGNED FOR USE IN APPLICATIONS INVOLVING GREAT SHEAR STRESS. THE HEAD IS DESIGNED TO ACCOMMODATE AN EXTERNAL WRENCH OR DRIVER. 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. THE UNTHREADED PORTION IS OF SPECIFIC 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. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. SEE BOLT, MACHINE AND BOLT, CLEVIS.
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 4140 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 8740 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| AASU | HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | NICKEL OVERALL AND CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SS8488 CAGE 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL OR AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| CQBC | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
| AASA | THREAD LENGTH | 0.594 INCHES MINIMUM AND 0.644 INCHES MAXIMUM |
| AATD | EXTENDED WASHER THICKNESS | 0.091 INCHES MINIMUM AND 0.101 INCHES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| AASB | FASTENER LENGTH | 1.229 INCHES MINIMUM AND 1.259 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AAUR | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.644 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| AATB | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
| AASK | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| ANEE | GRIP LENGTH | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |