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 |
|---|---|
| 80378 | TRIUMPH AEROSTRUCTURES, LLC DBA TRIU |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASA | THREAD LENGTH | 0.174 INCHES NOMINAL |
| AASK | HEAD STYLE | KNURLED NO. 1 |
| AAUY | POINT LENGTH | 0.325 INCHES NOMINAL |
| CWDK | POINT CHAMFER ANGLE | 30.0 DEGREES NOMINAL |
| AASL | HEAD DIAMETER | 0.625 INCHES NOMINAL |
| AAJD | THREAD CLASS | 3A |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.126 INCHES NOMINAL FIRST SHOULDER |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASU | HEAD HEIGHT | 0.062 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.112 INCHES |
| MATT | MATERIAL | STEEL OVERALL |
| AAVA | POINT DIAMETER | 0.078 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AASB | FASTENER LENGTH | 0.625 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.250 INCHES NOMINAL FIRST SHOULDER |
| CMLP | THREAD QUANTITY PER INCH | 40 |