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National Stock Number:
5305-00-441-4848
Federal Supply Class:
5305
National Item Identification Number:
004414848
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:
| 10043948 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | SCH330 | 01226 | HUTCHINSON AEROSPACE & INDUSTRY, INC. |
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Techincal Specification:
| FASTENER LENGTH | 1.500 INCHES NOMINAL | | HEAD DIAMETER | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 0.375 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL DOCUMENT AND CLASSIFICATION | | | MATERIAL | | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT LENGTH | 0.156 INCHES NOMINAL | | POINT STYLE | UNIVERSAL | | POINT SWIVEL INCLUDED ANGLE | 7.5 DEGREES NOMINAL | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | POINT DIAMETER | 0.185 INCHES NOMINAL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.344 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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