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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:
| FASTENER LENGTH | 1.094 INCHES NOMINAL | | HEAD HEIGHT | 0.281 INCHES NOMINAL | | HEAD DIAMETER | 0.500 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL | STEEL COMP 430 OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | POINT STYLE | FLAT | | SHOULDER DIAMETER | 0.438 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.156 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.938 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 24 |
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