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 |
| 57712 |
TELEMECHANICS INC |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| AASB |
FASTENER LENGTH |
0.391 INCHES NOMINAL |
| AASB |
FASTENER LENGTH |
0.391 INCHES NOMINAL |
| AAWC |
FIRST DIAMETER FROM HEAD |
0.214 INCHES NOMINAL |
| THSD |
THREAD SERIES DESIGNATOR |
UNEF |
| AAJD |
THREAD CLASS |
3A |
| CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
1 |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE 1 |
| SFTT |
SURFACE TREATMENT |
CHROMATE ZINC OVERALL |
| AASU |
HEAD HEIGHT |
0.094 INCHES NOMINAL |
| AASL |
HEAD DIAMETER |
0.344 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT CHAMFER |
| MATT |
MATERIAL |
STEEL OVERALL |
| AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
0.031 INCHES NOMINAL |
| CBBL |
FEATURES PROVIDED |
CASEHARDENED |
| FEAT |
SPECIAL FEATURES |
UNTHREADED PORTION BEYOND END OPPOSITE HEAD MACHINED TO 0.187 INCHES DIAMETER AND 0.172 INCHES LENGTH NOT PLATED |
| AASA |
THREAD LENGTH |
0.188 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
32 |
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