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 |
|---|---|
| 80063 | US ARMY COMMUNICATIONS & ELECTRONICS |
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASK | HEAD STYLE | KNURLED NO. 1 |
| AASB | FASTENER LENGTH | 1.810 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| AASL | HEAD DIAMETER | 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 303 OVERALL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| AASU | HEAD HEIGHT | 0.250 INCHES NOMINAL |
| AATX | SHOULDER LENGTH | 0.250 INCHES NOMINAL FIRST SHOULDER |
| ABQJ | POINT STYLE | FLAT |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CL 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AAWC | FIRST DIAMETER FROM HEAD | 0.170 INCHES MINIMUM AND 0.175 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.180 INCHES NOMINAL |
| AASA | THREAD LENGTH | 0.380 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | COLOR BLACK |
| AATN | SHOULDER DIAMETER | 0.500 INCHES NOMINAL FIRST SHOULDER |
| CMLP | THREAD QUANTITY PER INCH | 20 |