Part Number
Part Number:
NSN:
NIIN:
Item Name:
BOLT , SHEAR
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 |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| CMLP |
THREAD QUANTITY PER INCH |
24 |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
5.059 INCHES MINIMUM FIRST HOLE AND 5.069 INCHES MAXIMUM FIRST HOLE |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
AMS2501-3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING OR AMS5678 ASSN STD SINGLE MATERIAL RESPONSE SPRING |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| MATT |
MATERIAL |
STEEL COMP 4340 OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-8844,CLASS I MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AASU |
HEAD HEIGHT |
0.189 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE LOCKING FEATURE |
| SFTT |
SURFACE TREATMENT |
PASSIVATE LOCKING FEATURE |
| FEAT |
SPECIAL FEATURES |
FOR USE IN CRITICAL APPLICATIONS; USED AS: BOLT, SELF-RETAINING,IMPEDANCE TYPE, 95KSI FSU, HEX HEAD, 450F; USE MS21244 NUTS WITH THESE BOLTS |
| AAJD |
THREAD CLASS |
3A |
| CQFM |
HARDNESS RATING |
56.0 ROCKWELL C MINIMUM LOCKING FEATURE AND 60.0 ROCKWELL C MAXIMUM LOCKING FEATURE |
| ANEE |
GRIP LENGTH |
4.625 INCHES MINIMUM AND 4.641 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL CORROSION RESISTING LOCKING FEATURE |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AGAV |
END ITEM IDENTIFICATION |
HH-3F HELICOPTER |
| SFTT |
SURFACE TREATMENT |
PASSIVATE SPRING |
| AASK |
HEAD STYLE |
CROWNED HEXAGON |
| AASB |
FASTENER LENGTH |
5.164 INCHES MINIMUM AND 5.184 INCHES MAXIMUM |
| CQFM |
HARDNESS RATING |
36.0 ROCKWELL C MINIMUM OVERALL AND 41.0 ROCKWELL C MAXIMUM OVERALL |
| AAUR |
GRIP DIAMETER |
0.120 INCHES MINIMUM AND 0.166 INCHES MAXIMUM |
| CQBC |
MINIMUM TENSILE STRENGTH |
11540 POUNDS PER SQUARE INCH |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.106 INCHES MINIMUM FIRST HOLE AND 0.116 INCHES MAXIMUM FIRST HOLE |
| AHYM |
NOMINAL THREAD DIAMETER |
0.373 INCHES |
| CRTL |
CRITICALITY CODE JUSTIFICATION |
FEAT |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-B-83050 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| AASA |
THREAD LENGTH |
0.377 INCHES MINIMUM AND 0.419 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL COMP 304 SPRING OR STEEL COMP 302 SPRING OR STEEL COMP 631 SPRING |
| AATB |
WIDTH BETWEEN FLATS |
0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |
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