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 |
| 13688 |
MARTIN MARIETTA CORP ELECTRONICS LAB |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AHYM |
NOMINAL THREAD DIAMETER |
0.190 INCHES |
| AASK |
HEAD STYLE |
KNURLED NO. 1 |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| AASB |
FASTENER LENGTH |
1.080 INCHES NOMINAL |
| AASU |
HEAD HEIGHT |
0.300 INCHES NOMINAL |
| AAWD |
SECOND DIAMETER FROM HEAD |
0.139 INCHES MINIMUM AND 0.149 INCHES MAXIMUM |
| AAWC |
FIRST DIAMETER FROM HEAD |
0.300 INCHES NOMINAL |
| AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
0.080 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| MATT |
MATERIAL |
STEEL COMP 303 OVERALL OR STEEL COMP 303SE OVERALL |
| AASL |
HEAD DIAMETER |
0.560 INCHES NOMINAL |
| CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
2 |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| FEAT |
SPECIAL FEATURES |
CONE POINT 90 DEG OF ANGLE |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AAWJ |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER |
0.620 INCHES NOMINAL |
| AAJD |
THREAD CLASS |
2A |
| AASA |
THREAD LENGTH |
0.365 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
| SFTT |
SURFACE TREATMENT |
PASSIVATE OVERALL |
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