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 |
|---|---|
| 56161 | GENERAL DYNAMICS LAND SYSTEMS CANADA |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASB | FASTENER LENGTH | 1.485 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 18 |
| AASU | HEAD HEIGHT | 0.650 INCHES MINIMUM AND 0.790 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CHROMATE ZINC OVERALL |
| FEAT | SPECIAL FEATURES | ONE HOLE ON THREADS 0.094 IN. MIN,0.097 IN. MAX DIA |
| AATB | WIDTH BETWEEN FLATS | 1.310 INCHES MINIMUM AND 1.440 INCHES MAXIMUM |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 1.389 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | WING NO. 3 |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |