Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , EXTERNALLY RELIEVED BODY
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, AND WHOSE UNTHREADED PORTION HAS BEEN MACHINED OR GROUND IN ONE OR MORE PLACES OR OVER ITS ENTIRE LENGTH TO A MAXIMUM DIAMETER LESS THAN THE MINIMUM PITCH DIAMETER OF THE THREAD (EXCLUDES UNDERCUT FOR THREAD RELIEF). IT IS NO. 0 (0.060 IN.) (1.5 MM) OR LARGER, AND IS DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR INSERTED DRIVER (EXCLUDING INTERNAL SOCKET AND MULTIPLE SPLINE TYPES) OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET AND MULTIPLE SPLINE TYPES) BUT MAY ALSO BE DESIGNED FOR EXTERNAL WRENCHING. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. SEE ALSO BOLT, EXTERNALLY RELIEVED BODY AND BOLT, INTERNAL WRENCHING.
CAGE Information
| Code |
Company |
| 78286 |
SIKORSKY AIRCRAFT CORPORATION |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AAWJ |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER |
0.770 INCHES MINIMUM AND 0.810 INCHES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| MATT |
MATERIAL |
STEEL COMP 8630 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 8740 OVERALL |
| AASB |
FASTENER LENGTH |
0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| AAWD |
SECOND DIAMETER FROM HEAD |
0.090 INCHES MINIMUM AND 0.095 INCHES MAXIMUM |
| AAJD |
THREAD CLASS |
3A |
| AASK |
HEAD STYLE |
BINDING |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASU |
HEAD HEIGHT |
0.078 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM |
| CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
2 |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| FEAT |
SPECIAL FEATURES |
CADMIUM PLATE 0.00015 IN. THK |
| AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| AASA |
THREAD LENGTH |
0.180 INCHES MINIMUM AND 0.240 INCHES MAXIMUM |
| AAWC |
FIRST DIAMETER FROM HEAD |
0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
| AHYM |
NOMINAL THREAD DIAMETER |
0.138 INCHES |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |
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