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National Stock Number:
5305-00-341-7865
Federal Supply Class:
5305
National Item Identification Number:
003417865
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:
| 061136 | 06650 | BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES | | 11136 | 06650 | BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES | | 13131-1PC64 | 06650 | BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES | | SCB77499 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | | SMB338374 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| FASTENER LENGTH | 0.259 INCHES NOMINAL | | HEAD HEIGHT | 0.147 INCHES NOMINAL | | HEAD DIAMETER | 0.500 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 3 | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | POINT STYLE | FLAT | | SPECIAL FEATURES | PHENOLIC INSERT PRESSED INTO 0.125 IN. DIA HOLE IN BOTTOM | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.181 INCHES MINIMUM | | THREAD CLASS | 2A | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 18 |
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