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National Stock Number:
5305-01-627-0504
Federal Supply Class:
5305
National Item Identification Number:
016270504
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).
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Manufacturer Information:
| 1043302 | 81996 | U S ARMY AVIATION AND MISSILE COMMAND | | 1043302-001 | 81996 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 2.690 INCHES NOMINAL | | HEAD DIAMETER | 0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM | | HEAD HEIGHT | 1.040 INCHES NOMINAL | | HEAD STYLE | FLAT EXTENDED WASHER | | NOMINAL THREAD DIAMETER | 0.313 INCHES | | MATERIAL | STEEL OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.450 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNF | | EXTENDED WASHER DIAMETER | 0.625 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.190 INCHES NOMINAL |
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