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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , SOCKET HEAD

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. THE HEAD HAS AN INTERNAL SOCKET OR MULTIPLE SPLINE FOR USE WITH AN INSERTED DRIVER. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES ITEMS WITH BEVEL (CONICAL) HEADS. SEE BOLT, INTERNAL WRENCHING. EXCLUDES SCREW, SHOULDER; AND SCREW, MACHINE.

CAGE Information

Code Company
07679 HARDWARE SPECIALTY CO. INC.

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL STEEL COMP 8630 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 4037 OVERALL
CQFM HARDNESS RATING 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL
AASK HEAD STYLE FLAT COUNTERSUNK
CRSQ COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
AAUM LOCKING FEATURE STRIP THREADS
AASL HEAD DIAMETER 0.491 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNF
AASB FASTENER LENGTH 0.625 INCHES NOMINAL
SFTT SURFACE TREATMENT CADMIUM OVERALL AND CHROMATE OVERALL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
AASA THREAD LENGTH 0.625 INCHES MAXIMUM

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