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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SCREW , SHOULDER

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN.) (1.5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) NOMINAL DIAMETER. NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST BE DESIGNED FOR ANY TYPE OF INSERTED DRIVER, BUT MAY ALSO PROVIDE FOR EXTERNAL WRENCHING OF THE HEAD. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WHICH ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE SCREW, EXTERNALLY RELIEVED BODY. FOR ITEMS WITH A NO. 10 (0.190 IN.) (5 MM) OR LARGER THREAD DIAMETER WITHOUT AN INSERTED DRIVER HEAD, USE BOLT, SHOULDER. EXCLUDES BOLT, INTERNAL WRENCHING AND SCREW, CAP, SOCKET HEAD.

CAGE Information

Code Company
K3743 BAE SYSTEMS GLOBAL COMBAT SYSTEMS LI

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASU HEAD HEIGHT 0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
AASU HEAD HEIGHT 0.130 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION ST A5-V18 MFR REF SINGLE MATERIAL RESPONSE OVERALL
ABQZ INTERNAL DRIVE STYLE TORQUE
AASA THREAD LENGTH 0.360 INCHES NOMINAL
CQFM HARDNESS RATING 600.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM OVERALL AND 700.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM OVERALL
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
MATT MATERIAL STEEL OVERALL
THSD THREAD SERIES DESIGNATOR UNF
AAJD THREAD CLASS 2A
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 1.390 INCHES NOMINAL FIRST HOLE
CBBL FEATURES PROVIDED CASEHARDENED
AASL HEAD DIAMETER 0.895 INCHES MINIMUM AND 0.900 INCHES MAXIMUM
SFTT SURFACE TREATMENT PHOSPHATE OVERALL
AHYM NOMINAL THREAD DIAMETER 0.438 INCHES
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION DEF. 29,CLASS 1 MFR REF SINGLE TREATMENT RESPONSE OVERALL
AASB FASTENER LENGTH 1.500 INCHES NOMINAL
CMLP THREAD QUANTITY PER INCH 20
AAWB SHANK UNTHREADED HOLE DIAMETER 0.104 INCHES MINIMUM FIRST HOLE AND 0.110 INCHES MAXIMUM FIRST HOLE

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