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National Stock Number:
5305-01-042-7540
Federal Supply Class:
5305
National Item Identification Number:
010427540
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:
| 29-38864-1 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.700 INCHES NOMINAL | | FASTENER LENGTH | 3.100 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM | | HEAD HEIGHT | 0.620 INCHES NOMINAL | | HEAD DIAMETER | 3.000 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 1018 OR STEEL COMP 4130 OVERALL | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | POINT STYLE | POINTLESS | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.400 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 13 |
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