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National Stock Number:
5305-01-226-1946
Federal Supply Class:
5305
National Item Identification Number:
012261946
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:
| 3C3059P08 | 07482 | GENERAL ELECTRIC COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 0.990 INCHES NOMINAL | | HEAD DIAMETER | 0.380 INCHES NOMINAL | | HEAD HEIGHT | 0.630 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 4 | | MATERIAL | | | POINT STYLE | FLAT | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.450 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF | | SPECIAL FEATURES | UNDERCUT IN SHANK 0.029 IN. MIN 0.032 IN. MAX LENGTH,DIA 0.210 IN. MIN 0.212 IN. MAX |
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