|
|
|
National Stock Number:
5305-01-425-7715
Federal Supply Class:
5305
National Item Identification Number:
014257715
Description:
THUMBSCREW
Detail:
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).
|
Manufacturer Information:
| 13481257 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 18084-1/4-20-SS-11 | 51506 | ACCURATE SCREW MACHINE CORP |
|
Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES NOMINAL | | FASTENER LENGTH | 0.740 INCHES MINIMUM AND | | 0.760 INCHES MAXIMUM | | MATERIAL | STEEL COMP 303 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764, CLASS 7, TY A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | COLOR | BLACK OVERALL | | HEAD STYLE | KNURLED NO. 5 | | HEAD DIAMETER | 0.500 INCHES MINIMUM AND | | 0.520 INCHES MAXIMUM | | HEAD HEIGHT | 0.235 INCHES MINIMUM AND | | 0.265 INCHES MAXIMUM |
|
|