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National Stock Number:
5305-00-361-7911
Federal Supply Class:
5305
National Item Identification Number:
003617911
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:
| 115905 | 34623 | AM GENERAL LLC | | 355253S | 23040 | FORD MOTOR CO FORD PARTS AND SERVICE DIV GOVERNMENT PART SALES | | 7324837 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 355253S | 57526 | FORD MOTOR COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HEAD HEIGHT | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM | | HEAD STYLE | WING NO. 3 | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT CHAMFER ANGLE | 40.0 DEGREES NOMINAL | | POINT LENGTH | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM | | POINT STYLE | FLAT | | WIDTH BETWEEN FLATS | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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