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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:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.557 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 1.442 INCHES NOMINAL | | FIRST DIAMETER FROM HEAD | 0.187 INCHES NOMINAL | | HEAD HEIGHT | 0.312 INCHES NOMINAL | | HEAD DIAMETER | 1.000 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 2 | | MATERIAL DOCUMENT AND CLASSIFICATION | L-P-393A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | PLASTIC OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SPECIAL FEATURES | APPLY TOP COAT USING FOREST GREEN | | POINT STYLE | CONE | | SHOULDER DIAMETER | 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM SECOND SHOULDER | | SHOULDER DIAMETER | 0.500 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.420 INCHES NOMINAL SECOND SHOULDER | | SHOULDER LENGTH | 0.090 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-46168 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PAINT GRIP | | SURFACE TREATMENT | PAINT HEAD | | THREAD CLASS | 2B | | THREAD LENGTH | 0.250 INCHES NOMINAL | | THREAD DIRECTION | RIGHT-HAND | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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