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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
AASA THREAD LENGTH 1.125 INCHES MINIMUM
AASA THREAD LENGTH 1.125 INCHES MINIMUM
AASU HEAD HEIGHT 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
CQHQ MINIMUM YIELD STRENGTH 130000 POUNDS PER SQUARE INCH
CMLP THREAD QUANTITY PER INCH 18
AAJD THREAD CLASS 3A
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS1352 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MATT MATERIAL STEEL OVERALL
THSD THREAD SERIES DESIGNATOR UNC
ABQZ INTERNAL DRIVE STYLE HEXAGON
CQFM HARDNESS RATING 36.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL
AASL HEAD DIAMETER 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM
SFTT SURFACE TREATMENT CADMIUM OVERALL AND CHROMATE OVERALL
AASB FASTENER LENGTH 1.484 INCHES MINIMUM AND 1.531 INCHES MAXIMUM
AAUM LOCKING FEATURE PELLET THREADS OR STRIP THREADS
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416 TYPE 2 CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
ASDB WIDTH ACROSS FLATS 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.312 INCHES
MDCL MATERIAL DOCUMENT AND CLASSIFICATION 66 FED STD SINGLE MATERIAL RESPONSE OVERALL

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