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National Stock Number:
5305-00-853-9305
Federal Supply Class:
5305
National Item Identification Number:
008539305
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:
| SCH336-001-03 | 01226 | HUTCHINSON AEROSPACE & INDUSTRY, INC. |
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Techincal Specification:
| FASTENER LENGTH | 2.500 INCHES NOMINAL | | HEAD HEIGHT | 0.437 INCHES NOMINAL | | HEAD DIAMETER | 1.125 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | POINT STYLE | DOG | | POINT DIAMETER | 0.240 INCHES NOMINAL | | POINT LENGTH | 0.187 INCHES NOMINAL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.500 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNC |
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