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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
23667 SMITHS DETECTION-EDGEWOOD INC DIV ED

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AATX SHOULDER LENGTH 0.067 INCHES MINIMUM FIRST SHOULDER AND 0.071 INCHES MAXIMUM FIRST SHOULDER
AATX SHOULDER LENGTH 0.067 INCHES MINIMUM FIRST SHOULDER AND 0.071 INCHES MAXIMUM FIRST SHOULDER
ABQZ INTERNAL DRIVE STYLE SLOT
MATT MATERIAL STEEL COMP 303 OVERALL
AHYM NOMINAL THREAD DIAMETER 0.099 INCHES
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
AATN SHOULDER DIAMETER 0.155 INCHES MINIMUM FIRST SHOULDER AND 0.156 INCHES MAXIMUM FIRST SHOULDER
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
THSD THREAD SERIES DESIGNATOR UNF
AASL HEAD DIAMETER 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
AAJD THREAD CLASS 2A
CMLP THREAD QUANTITY PER INCH 56
AASA THREAD LENGTH 0.148 INCHES MINIMUM AND 0.152 INCHES MAXIMUM
AASB FASTENER LENGTH 0.219 INCHES NOMINAL
AASU HEAD HEIGHT 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM

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