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 |
|---|---|
| 56442 | DIAMOND REO TRUCK CO |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CMLP | THREAD QUANTITY PER INCH | 24 |
| SFTT | SURFACE TREATMENT | ZINC OVERALL |
| AASK | HEAD STYLE | THUMB NO. 7 |
| AAJD | THREAD CLASS | 1A |
| CWYB | SHOULDER SHAPE | ROUND ALL SHOULDERS |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-Z-325,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| AASA | THREAD LENGTH | 0.500 INCHES MINIMUM |
| AATB | WIDTH BETWEEN FLATS | 2.000 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 1.656 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 1.310 INCHES NOMINAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |