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 |
|---|---|
| 98230 | NATIONAL SECURITY AGENCY |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASK | HEAD STYLE | KNURLED NO. 1 |
| AASK | HEAD STYLE | KNURLED NO. 1 |
| AATN | SHOULDER DIAMETER | 0.030 INCHES NOMINAL FIRST SHOULDER |
| MATT | MATERIAL | STEEL COMP 303 OVERALL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.250 INCHES NOMINAL FIRST SHOULDER |
| ABQJ | POINT STYLE | FLAT |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AHYM | NOMINAL THREAD DIAMETER | 0.112 INCHES |
| AASU | HEAD HEIGHT | 0.030 INCHES MAXIMUM |
| AASA | THREAD LENGTH | 0.220 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.250 INCHES MAXIMUM |
| CWDK | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| TEST | TEST DATA DOCUMENT | 98230-0N103781 DRAWING |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AAUY | POINT LENGTH | 0.020 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| AASB | FASTENER LENGTH | 0.250 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 40 |