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 |
|---|---|
| 81349 | MILITARY SPECIFICATIONS PROMULGATED |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633,TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | ZINC OVERALL AND CHROMATE OVERALL |
| AHYM | NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASU | HEAD HEIGHT | 19.35 MILLIMETERS MINIMUM AND 20.65 MILLIMETERS MAXIMUM |
| CQWR | EXTERNAL THREAD TOLERANCE CLASS | 6G |
| MATT | MATERIAL | STEEL OVERALL |
| AASA | THREAD LENGTH | 25.35 MILLIMETERS MINIMUM AND 30.65 MILLIMETERS MAXIMUM |
| CQQR | THREAD PITCH IN MILLIMETERS | 1.25 |
| AASB | FASTENER LENGTH | 29.35 MILLIMETERS MINIMUM AND 30.65 MILLIMETERS MAXIMUM |
| AASK | HEAD STYLE | WING NO. 2 |
| THSD | THREAD SERIES DESIGNATOR | M |
| AATB | WIDTH BETWEEN FLATS | 39.20 MILLIMETERS MINIMUM AND 40.80 MILLIMETERS MAXIMUM |