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National Stock Number:
5305-01-321-8044
Federal Supply Class:
5305
National Item Identification Number:
013218044
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:
| 5029392 | 57946 | US ARMY COMBAT SURVEILLANCE AND TARGET ACQUISITION LABORATORY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.760 INCHES NOMINAL | | FASTENER LENGTH | 0.760 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | THUMB NO. 3 | | HEAD HEIGHT | 0.430 INCHES MINIMUM AND | | 0.500 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.390 INCHES MINIMUM AND | | 0.470 INCHES MAXIMUM | | POINT STYLE | FLAT | | POINT LENGTH | 0.030 INCHES NOMINAL | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | SPECIAL FEATURES | HEAD COATED WITH CHEMICAL AGENT RESISTANT IAW DWG C5076770 | | SPECIFICATION/STANDARD DATA | 96906-MS21316-26 GOVERNMENT STANDARD | | DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY THREAD AND FASTENER LG AND POINT STYLE AND 1 0.062 IN DIA HOLE 0.093 IN FROM BOTTOM OF POINT PARALLEL TO FLAT PORTION OF HEAD |
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