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National Stock Number:
5305-00-904-0254
Federal Supply Class:
5305
National Item Identification Number:
009040254
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:
| MS21316-57 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| FASTENER LENGTH | 0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM | | HEAD HEIGHT | 0.900 INCHES MINIMUM AND 0.970 INCHES MAXIMUM | | HEAD STYLE | THUMB NO. 3 | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | POINT STYLE | FLAT | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | WIDTH BETWEEN FLATS | 0.780 INCHES MINIMUM AND 0.940 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD LENGTH | 0.844 INCHES MINIMUM AND 0.969 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 16 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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