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 |
|---|---|
| 45722 | USM CORP SUB OF EMHART INDUSTRIES IN |
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AATB | WIDTH BETWEEN FLATS | 0.521 INCHES MINIMUM AND 0.551 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| AASB | FASTENER LENGTH | 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM |
| ABQJ | POINT STYLE | FLAT |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| MATT | MATERIAL | STEEL OVERALL |
| AASA | THREAD LENGTH | 0.875 INCHES MINIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| FEAT | SPECIAL FEATURES | ASSEMBLED W/WASHER 1/4 IN. ID,0.620 IN. OD,0.050 IN. PORM 0.010 THK |
| AASU | HEAD HEIGHT | 0.605 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| AASK | HEAD STYLE | THUMB NO. 3 |