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Part Number

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
98897 LOCKHEED MARTIN CORPORATION DBA LOCK

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CRSQ COUNTERSINK ANGLE 100.0 DEGREES NOMINAL
AASA THREAD LENGTH 0.276 INCHES MINIMUM
AASB FASTENER LENGTH 0.386 INCHES MINIMUM AND 0.416 INCHES MAXIMUM
CYBE SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE II
AAJF THREAD DIRECTION RIGHT-HAND
CYBA SCREW SURFACE TREATMENT CADMIUM AND CHROMATE
AASK HEAD STYLE FLAT COUNTERSUNK
CQFM HARDNESS RATING 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
CYAU SCREW MATERIAL STEEL COMP 4037 OR STEEL COMP 8630
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
CQBC MINIMUM TENSILE STRENGTH 125000 POUNDS PER SQUARE INCH
AASL HEAD DIAMETER 0.231 INCHES MINIMUM AND 0.279 INCHES MAXIMUM
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION AMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE
CMLP THREAD QUANTITY PER INCH 32
AHYM NOMINAL THREAD DIAMETER 0.138 INCHES

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