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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
19133 MCDONNELL DOUGLAS CORP MCDONNELL DOU

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CRSQ COUNTERSINK ANGLE 100.0 DEGREES NOMINAL
ABQZ INTERNAL DRIVE STYLE SLOT
MATT MATERIAL STEEL COMP 302 OVERALL
AATX SHOULDER LENGTH 2.075 INCHES NOMINAL FIRST SHOULDER
AASL HEAD DIAMETER 0.210 INCHES MINIMUM AND 0.225 INCHES MAXIMUM
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
MDCL MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT COUNTERSUNK
AHYM NOMINAL THREAD DIAMETER 0.112 INCHES
AASB FASTENER LENGTH 2.375 INCHES NOMINAL
AASA THREAD LENGTH 0.120 INCHES NOMINAL
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AATN SHOULDER DIAMETER 0.120 INCHES MINIMUM FIRST SHOULDER AND 0.130 INCHES MAXIMUM FIRST SHOULDER
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SFTT SURFACE TREATMENT PASSIVATE OVERALL
CMLP THREAD QUANTITY PER INCH 40

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