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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
88044 AERONAUTICAL STANDARDS GROUP DEPT OF

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
CYBE SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE
AAJD THREAD CLASS 3A
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
AASA THREAD LENGTH 0.250 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT COUNTERSUNK
CRSQ COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNF
CQFM HARDNESS RATING 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
AASL HEAD DIAMETER 0.327 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
CYAU SCREW MATERIAL STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8740
CQBC MINIMUM TENSILE STRENGTH 125000 POUNDS PER SQUARE INCH
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-6098 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 4TH MATERIAL RESPONSE
AASB FASTENER LENGTH 0.406 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
CYBA SCREW SURFACE TREATMENT CADMIUM
CMLP THREAD QUANTITY PER INCH 32

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