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National Stock Number:
5305-00-649-6981
Federal Supply Class:
5305
National Item Identification Number:
006496981
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:
| 2793-1249 | 3B150 | RAYTHEON COMPANY | | 2793-1249 | 49956 | RAYTHEON COMPANY | | 9077559 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM | | HEAD HEIGHT | 0.562 INCHES NOMINAL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | MATERIAL | COPPER ALLOY OVERALL | | POINT STYLE | POINTLESS | | WIDTH BETWEEN FLATS | 0.937 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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