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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:
| FASTENER LENGTH | 28.44 MILLIMETERS NOMINAL | | HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD HEIGHT | 22.5 MILLIMETERS NOMINAL | | HEAD STYLE | THUMB NO. 3 | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 7.9 MILLIMETERS | | POINT LENGTH | 3.8 MILLIMETERS NOMINAL | | POINT STYLE | UNIVERSAL | | POINT SWIVEL INCLUDED ANGLE | 1.7 DEGREES NOMINAL | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | POINT DIAMETER | 5.2 MILLIMETERS MINIMUM AND 5.3 MILLIMETERS MAXIMUM | | WIDTH BETWEEN FLATS | 38.1 MILLIMETERS NOMINAL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 24.63 MILLIMETERS NOMINAL | | THREAD SERIES DESIGNATOR | UNC | | THREAD PITCH IN MILLIMETERS | 0.2 | | THREAD QUANTITY PER INCH | 18 |
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