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National Stock Number:
5305-00-721-4589
Federal Supply Class:
5305
National Item Identification Number:
007214589
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:
| 4049 | 00141 | ROLLER BEARING CO OF AMERICA, INC | | PFFT305-001-01 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | PQ-4D-3 | 29440 | W. M. BERG INC |
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Techincal Specification:
| FASTENER LENGTH | 0.750 INCHES NOMINAL | | HEAD DIAMETER | 0.750 INCHES NOMINAL | | HEAD HEIGHT | 0.188 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT STYLE | FLAT | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.625 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
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