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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
04241 KAPL INC DBA KNOLLS ATOMIC POWER LAB

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASL HEAD DIAMETER 0.977 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
MATT MATERIAL STEEL COMP 316L OVERALL OR STEEL COMP 314 OVERALL OR STEEL COMP 310 OVERALL OR STEEL COMP 309 OVERALL OR STEEL COMP 305 OVERALL OR STEEL COMP 304L OVERALL OR STEEL COMP 304 OVERALL OR STEEL COMP 303 OVERALL OR STEEL COMP 321 OVERALL OR STEEL COMP 347 OVERALL OR STEEL COMP 301 OVERALL OR STEEL COMP 302B OVERALL OR STEEL COMP 384 OVERALL OR STEEL COMP 317 OVERALL OR STEEL COMP 348 OVERALL OR STEEL COMP 302 OVERALL OR STEEL COMP 303SE OVERALL OR STEEL COMP 310S OVERALL OR STEEL COMP 309S OVERALL OR STEEL COMP 308 OVERALL OR STEEL COMP 316 OVERALL OR STEEL COMP 385 OVERALL
AHYM NOMINAL THREAD DIAMETER 0.625 INCHES
ASDB WIDTH ACROSS FLATS 0.375 INCHES NOMINAL
AAJD THREAD CLASS 3A
CWYB SHOULDER SHAPE ROUND FIRST SHOULDER
AASA THREAD LENGTH 0.875 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
AATN SHOULDER DIAMETER 0.746 INCHES MINIMUM FIRST SHOULDER AND 0.748 INCHES MAXIMUM FIRST SHOULDER
THSD THREAD SERIES DESIGNATOR UNC
AATX SHOULDER LENGTH 1.995 INCHES MINIMUM FIRST SHOULDER AND 2.005 INCHES MAXIMUM FIRST SHOULDER
CMLP THREAD QUANTITY PER INCH 11
ABQZ INTERNAL DRIVE STYLE HEXAGON
AASU HEAD HEIGHT 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
AASB FASTENER LENGTH 2.875 INCHES NOMINAL

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