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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
0K292 NCMI-BRUEGGEMANN INC. DBA L R M B

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CMLP THREAD QUANTITY PER INCH 24
ABQZ INTERNAL DRIVE STYLE SLOT
AAJD THREAD CLASS 3A
AASU HEAD HEIGHT 0.344 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 3RD MATERIAL RESPONSE
AASL HEAD DIAMETER 0.491 INCHES MINIMUM AND 0.501 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNF
AASB FASTENER LENGTH 0.281 INCHES NOMINAL
AASA THREAD LENGTH 0.198 INCHES MINIMUM
CQFM HARDNESS RATING 70.5 ROCKWELL A MINIMUM AND 72.0 ROCKWELL A MAXIMUM
CYAU SCREW MATERIAL STEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 4140
CYBA SCREW SURFACE TREATMENT CADMIUM
AHYM NOMINAL THREAD DIAMETER 0.312 INCHES

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