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National Stock Number:
5305-01-198-0065
Federal Supply Class:
5305
National Item Identification Number:
011980065
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:
| 13027239 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 13027239 | 3V055 | ANCO MACHINE, INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 7.9 MILLIMETERS | | THREAD QUANTITY PER INCH | 18 | | THREAD PITCH IN MILLIMETERS | 0.2 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 24.63 MILLIMETERS NOMINAL | | FASTENER LENGTH | 28.44 MILLIMETERS NOMINAL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND | | 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | THUMB NO. 3 | | HEAD HEIGHT | 22.5 MILLIMETERS NOMINAL | | WIDTH BETWEEN FLATS | 38.1 MILLIMETERS NOMINAL | | POINT STYLE | UNIVERSAL | | POINT LENGTH | 3.8 MILLIMETERS NOMINAL | | POINT DIAMETER | 5.2 MILLIMETERS MINIMUM AND | | 5.3 MILLIMETERS MAXIMUM | | POINT SWIVEL INCLUDED ANGLE | 1.7 DEGREES NOMINAL | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 18876 | | DESIGN CONTROL REFERENCE | 13027239 |
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