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Part Number

Part Number:
NSN:
NIIN:
Item Name:
THUMBSCREW

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER. IT MAY HAVE AN UNTHREADED PORTION WITH A DIAMETER LESS THAN, EQUAL TO, OR GREATER THAN THE DIAMETER OF THE THREADED PORTION. IT HAS EITHER A VERTICALLY FLATTENED, CIRCULAR KNURLED, OR WING TYPE HEAD, ALL OF WHICH ARE DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. FOR ITEMS HAVING WRENCHING FACILITIES SUCH AS SOCKET RECESS, MULTIPLE SPLINE OR SLOT HEADS, USE SCREW (AS MODIFIED) OR BOLT (AS MODIFIED).

CAGE Information

Code Company
18876 U S ARMY AVIATION AND MISSILE COMMAN

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
CMLP THREAD QUANTITY PER INCH 24
ABQJ POINT STYLE FLAT
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL STEEL OVERALL
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASB FASTENER LENGTH 0.625 INCHES NOMINAL
AASU HEAD HEIGHT 0.438 INCHES NOMINAL
SFTT SURFACE TREATMENT CADMIUM OVERALL AND CHROMATE OVERALL
AASA THREAD LENGTH 0.625 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.410 INCHES NOMINAL
AASK HEAD STYLE THUMB NO. 3

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