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National Stock Number:
5305-00-263-3586
Federal Supply Class:
5305
National Item Identification Number:
002633586
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:
| 0492711 | 05073 | BABCOCK & WILCOX CO | | FFT305A | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | | MX243188-32 | 05073 | BABCOCK & WILCOX CO | | MX242266-3 PIECE 32 | 58529 | THE BABCOCK & WILCOX COMPANY DIV B&W SERVICE COMPANY DBA B & W SERVICE CO | | MS21316-56 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY THD CLASS AND LG | | FASTENER LENGTH | 0.750 INCHES NOMINAL | | HEAD HEIGHT | 0.906 INCHES MINIMUM | | HEAD STYLE | THUMB NO. 3 | | MATERIAL | STEEL COMP 1005 OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 5 STYLE | | SPECIAL FEATURES | ALTERED ITEM-MAKE FROM MS21316-56 | | POINT STYLE | CUP | | WIDTH BETWEEN FLATS | 0.781 INCHES MINIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 16 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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