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National Stock Number:
5305-00-413-7512
Federal Supply Class:
5305
National Item Identification Number:
004137512
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:
| 187981 | 56232 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MINIMUM | | FASTENER LENGTH | 1.375 INCHES NOMINAL | | MATERIAL | COPPER ALLOY OVERALL | | SURFACE TREATMENT | TIN OVERALL | | HEAD STYLE | KNURLED NO. 4 | | HEAD DIAMETER | 0.375 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | POINT STYLE | FLAT | | FIRST DIAMETER FROM HEAD | 0.125 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.500 INCHES NOMINAL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 56232 | | DESIGN CONTROL REFERENCE | 187981 |
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