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Part Number:
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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
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
FEAT SPECIAL FEATURES TORQUE IN LBS MIN 140; GRIP LENGTH 0.1875 IN
THSD THREAD SERIES DESIGNATOR UNJF
AASK HEAD STYLE FILLISTER COUNTERSUNK
ABQZ INTERNAL DRIVE STYLE TORQUE SET
AAJD THREAD CLASS 3A
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE
AAJF THREAD DIRECTION RIGHT-HAND
CRSQ COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
CYAU SCREW MATERIAL TITANIUM ALLOY UNS R56400
AASA THREAD LENGTH 0.425 INCHES NOMINAL
AASU HEAD HEIGHT 0.015 INCHES MAXIMUM
AASL HEAD DIAMETER 0.464 INCHES MINIMUM AND 0.506 INCHES MAXIMUM
CXCY PART NAME ASSIGNED BY CONTROLLING AGENCY BOLT, 100 DEG FLUSH HEAD 160,000 PSI UTS
AASB FASTENER LENGTH 0.637 INCHES MINIMUM AND 0.667 INCHES MAXIMUM

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