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National Stock Number:
5305-01-239-0639
Federal Supply Class:
5305
National Item Identification Number:
012390639
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:
| 9M213B5-8 | 76301 | THE BOEING COMPANY | | CL-022-SHS-8 | 99862 | CARR LANE MANUFACTURING CO | | CL-520-SHS-8 | 99862 | CARR LANE MANUFACTURING CO |
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Techincal Specification:
| FASTENER LENGTH | 2.034 INCHES MINIMUM AND 2.154 INCHES MAXIMUM | | HEAD DIAMETER | 1.095 INCHES MINIMUM AND 1.155 INCHES MAXIMUM | | HEAD HEIGHT | 0.345 INCHES MINIMUM AND 0.405 INCHES MAXIMUM | | HEAD STYLE | KNURLED NO. 4 | | MATERIAL | STEEL COMP 1020 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | POINT LENGTH | 0.392 INCHES MINIMUM AND 0.452 INCHES MAXIMUM | | POINT STYLE | UNIVERSAL | | POINT SWIVEL INCLUDED ANGLE | 40.0 DEGREES NOMINAL | | POINT DIAMETER | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM | | SPECIAL FEATURES | THREADED BALL PERMITS REMOVAL OF SWIVEL BALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 1.364 INCHES MINIMUM AND 1.604 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 18 |
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