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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SETSCREW

Definition:

AN EXTERNALLY THREADED DEVICE WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER WITH OR WITHOUT A HEAD AND HAVING A CUP, CONE, OR OTHER TYPE OF MACHINED POINT DESIGNED TO PREVENT OR RESTRICT RELATIVE MOVEMENT OF PARTS AND DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR INSERTED DRIVER. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS.

CAGE Information

Code Company
81348 FEDERAL SPECIFICATIONS PROMULGATED B

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
SFTT SURFACE TREATMENT OXIDE OVERALL
ABQJ POINT STYLE CONE
MATT MATERIAL COPPER ALLOY 270 OVERALL OR COPPER ALLOY 260 OVERALL OR COPPER ALLOY 268 OVERALL OR COPPER ALLOY 274 OVERALL
AAJD THREAD CLASS 3A
ZZZT NONDEFINITIVE SPEC/STD DATA 1 TYPE AND 2 STYLE
AAJF THREAD DIRECTION RIGHT-HAND
AASB FASTENER LENGTH 0.500 INCHES NOMINAL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
AASK HEAD STYLE HEADLESS (SETSCREW)
CMLP THREAD QUANTITY PER INCH 16
THSD THREAD SERIES DESIGNATOR UNC
MDCL MATERIAL DOCUMENT AND CLASSIFICATION QQ-B-626 FED SPEC 1ST MATERIAL RESPONSE OVERALL OR QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE OVERALL OR QQ-W-321 FED SPEC 3RD MATERIAL RESPONSE OVERALL OR QQ-W-321 FED SPEC 4TH MATERIAL RESPONSE OVERALL
ABQZ INTERNAL DRIVE STYLE HEXAGON
ASDB WIDTH ACROSS FLATS 0.188 INCHES NOMINAL
AHYM NOMINAL THREAD DIAMETER 0.375 INCHES

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