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National Stock Number:
5305-00-324-9026
Federal Supply Class:
5305
National Item Identification Number:
003249026
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:
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Techincal Specification:
| FASTENER LENGTH | 3.500 INCHES NOMINAL | | HEAD DIAMETER | 1.250 INCHES NOMINAL | | HEAD HEIGHT | 0.438 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | POINT STYLE | HALF DOG | | SURFACE TREATMENT | OXIDE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 3.125 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 13 |
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