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National Stock Number:
5305-01-431-1391
Federal Supply Class:
5305
National Item Identification Number:
014311391
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:
| 1708 | 91833 | KEYSTONE ELECTRONICS CORP |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.138 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.406 INCHES NOMINAL | | FASTENER LENGTH | 0.531 INCHES NOMINAL | | MATERIAL | COPPER ALLOY OVERALL | | SURFACE TREATMENT | NICKEL OVERALL | | HEAD STYLE | THUMB NO. 3 | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.437 INCHES NOMINAL |
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