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National Stock Number:
5305-01-625-2557
Federal Supply Class:
5305
National Item Identification Number:
016252557
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:
| 90200A549 | 39428 | MCMASTER-CARR SUPPLY CO | | 90200A549 | 97557 | MORTON MACHINE WORKS |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.500 INCHES NOMINAL | | FASTENER LENGTH | 1.500 INCHES NOMINAL | | MATERIAL | STEEL COMP 302 OVERALL | | SURFACE TREATMENT | OXIDE OVERALL | | COLOR | BLACK OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.688 INCHES NOMINAL | | HEAD HEIGHT | 0.219 INCHES NOMINAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | KNURLED HEAD THUMB SCREW |
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