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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
55974 HONEYWELL INTL INC DEFENSE AVIONICS

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
ABQZ INTERNAL DRIVE STYLE SLOT
MATT MATERIAL STEEL COMP 303 OVERALL
AAWH DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
CSNG EXTERNALLY RELIEVED BODY DIAMETER QUANTITY 1
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
AASU HEAD HEIGHT 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM
AASA THREAD LENGTH 0.210 INCHES NOMINAL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AAWC FIRST DIAMETER FROM HEAD 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM
AASB FASTENER LENGTH 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CMLP THREAD QUANTITY PER INCH 20
SFTT SURFACE TREATMENT PASSIVATE OVERALL
AASL HEAD DIAMETER 0.440 INCHES NOMINAL

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