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Part Number:
NSN:
NIIN:
Item Name:
SCREW , MACHINE

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN./1.5 MM) OR LARGER, DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), IN SIZES BELOW NO. 10 (0.190 IN./5 MM). NO. 10 AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET OR INTERNAL 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. EXCLUDES BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; AND SCREW, ASSEMBLED WASHER. SEE ALSO, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; AND SCREW, CAP SOCKET HEAD.

CAGE Information

Code Company
81349 MILITARY SPECIFICATIONS PROMULGATED

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASB FASTENER LENGTH 0.750 INCHES NOMINAL
AASB FASTENER LENGTH 0.750 INCHES NOMINAL
ABQZ INTERNAL DRIVE STYLE SLOT
AASK HEAD STYLE FILLISTER
CQBC MINIMUM TENSILE STRENGTH 80000 POUNDS PER SQUARE INCH
CMLP THREAD QUANTITY PER INCH 18
ZZZT NONDEFINITIVE SPEC/STD DATA 3 TYPE AND 4C STYLE
CYBA SCREW SURFACE TREATMENT PASSIVATE
AAJF THREAD DIRECTION RIGHT-HAND
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASU HEAD HEIGHT 0.194 INCHES MINIMUM AND 0.211 INCHES MAXIMUM
CYBE SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
AASA THREAD LENGTH 0.639 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.312 INCHES
CYAU SCREW MATERIAL STEEL CORROSION RESISTING
AASL HEAD DIAMETER 0.490 INCHES MINIMUM AND 0.518 INCHES MAXIMUM
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION 66 FED STD SINGLE MATERIAL RESPONSE

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