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National Stock Number:
5305-00-621-5325
Federal Supply Class:
5305
National Item Identification Number:
006215325
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:
| 8515123 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.938 INCHES MINIMUM | | FASTENER LENGTH | 1.094 INCHES NOMINAL | | MATERIAL | STEEL COMP 430 OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.500 INCHES NOMINAL | | HEAD HEIGHT | 0.281 INCHES NOMINAL | | POINT STYLE | FLAT | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.438 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.156 INCHES NOMINAL FIRST SHOULDER |
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