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National Stock Number:
5305-01-233-1403
Federal Supply Class:
5305
National Item Identification Number:
012331403
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:
| C5106745-001 | 57958 | SIGNALS WARFARE PROJECT MANAGER |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.250 INCHES NOMINAL | | FASTENER LENGTH | 1.442 INCHES NOMINAL | | MATERIAL | PLASTIC OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | L-P-393A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PAINT HEAD | | PAINT GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-46168 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | KNURLED NO. 2 | | HEAD DIAMETER | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 0.312 INCHES NOMINAL | | POINT STYLE | CONE | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.500 INCHES NOMINAL FIRST SHOULDER | | 0.307 INCHES MINIMUM AND | | 0.312 INCHES MAXIMUM SECOND SHOULDER | | SHOULDER LENGTH | 0.090 INCHES NOMINAL FIRST SHOULDER | | 0.420 INCHES NOMINAL SECOND SHOULDER | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.187 INCHES NOMINAL | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.557 INCHES NOMINAL | | SPECIAL FEATURES | APPLY TOP COAT USING FOREST GREEN |
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