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National Stock Number:
5305-01-612-2359
Federal Supply Class:
5305
National Item Identification Number:
016122359
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:
| 91185A801 | 39428 | MCMASTER-CARR SUPPLY CO |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.375 INCHES NOMINAL | | FASTENER LENGTH | 0.375 INCHES NOMINAL | | MATERIAL | PLASTIC ACETAL HEAD | | STEEL PROPERTY CLASS 18.8 THREADS | | COLOR | BLACK HEAD | | HEAD STYLE | STAR KNOB | | HEAD HEIGHT | 0.468 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 1.500 INCHES NOMINAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | PLASTIC-HEAD THUMB SCREW |
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