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National Stock Number:
5305-00-535-8437
Federal Supply Class:
5305
National Item Identification Number:
005358437
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:
| 8512799 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.188 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.375 INCHES NOMINAL | | FASTENER LENGTH | 2.063 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.312 INCHES NOMINAL | | HEAD DIAMETER | 0.687 INCHES NOMINAL | | HEAD HEIGHT | 1.000 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 2 | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE FASTENER | | MATERIAL | COPPER ALLOY 360 FASTENER | | MATERIAL | PLASTIC TOP OF HEAD | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | POINT STYLE | CONE | | SECOND DIAMETER FROM HEAD | 0.140 INCHES NOMINAL | | SPECIAL FEATURES | SLOTTED PROTRUSION ON TOP OF HEAD 0.312 IN. DIA BY 0.125 IN. HIGH | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNC |
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