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National Stock Number:
5305-01-331-1253
Federal Supply Class:
5305
National Item Identification Number:
013311253
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:
| 91746A428 | 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 | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.088 INCHES MINIMUM AND | | 2.188 INCHES MAXIMUM | | FASTENER LENGTH | 2.188 INCHES NOMINAL | | MATERIAL | STEEL COMP 303 OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 1.000 INCHES NOMINAL |
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