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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
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASU HEAD HEIGHT 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
AASA THREAD LENGTH 2.170 INCHES MINIMUM AND 2.250 INCHES MAXIMUM
AASB FASTENER LENGTH 4.420 INCHES MINIMUM AND 4.500 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.625 INCHES
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
CQHQ MINIMUM YIELD STRENGTH 130000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
AASL HEAD DIAMETER 0.921 INCHES MINIMUM AND 0.937 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
MATT MATERIAL STEEL OVERALL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD THREAD SERIES DESIGNATOR UNC
CQFM HARDNESS RATING 36.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL
CMLP THREAD QUANTITY PER INCH 11
ABQZ INTERNAL DRIVE STYLE HEXAGON
SFTT SURFACE TREATMENT CADMIUM OVERALL AND CHROMATE OVERALL
ASDB WIDTH ACROSS FLATS 0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM

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