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 |
---|---|
19200 | U S ARMY ARMAMENT RESEARCH & DEVELOP |
Characteristics (Decoded)
MRC | Requirements Statement | Clear Text Reply |
---|---|---|
AASK | HEAD STYLE | KNURLED NO. 1 |
AASK | HEAD STYLE | KNURLED NO. 1 |
FEAT | SPECIAL FEATURES | SHOULDERED UNTHD PORTION DRILLED FOR PIN SPRING NO. 3 |
AASA | THREAD LENGTH | 0.750 INCHES MINIMUM |
MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
AASU | HEAD HEIGHT | 0.625 INCHES NOMINAL |
AATN | SHOULDER DIAMETER | 0.625 INCHES NOMINAL FIRST SHOULDER |
CMLP | THREAD QUANTITY PER INCH | 18 |
CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
AATX | SHOULDER LENGTH | 0.250 INCHES NOMINAL FIRST SHOULDER |
ABQJ | POINT STYLE | FLAT |
AAJF | THREAD DIRECTION | RIGHT-HAND |
AASL | HEAD DIAMETER | 1.250 INCHES NOMINAL |
THSD | THREAD SERIES DESIGNATOR | UNC |
AAJD | THREAD CLASS | 2A |
AASB | FASTENER LENGTH | 15.125 INCHES NOMINAL |
AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |