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National Stock Number:
5305-01-082-8239
Federal Supply Class:
5305
National Item Identification Number:
010828239
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:
| CL-23620 | 99862 | CARR LANE MANUFACTURING CO | | GS550AG11C | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.770 INCHES MINIMUM AND | | 1.990 INCHES MAXIMUM | | FASTENER LENGTH | 1.990 INCHES MINIMUM AND | | 2.010 INCHES MAXIMUM | | MATERIAL | STEEL COMP 303 OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.990 INCHES MINIMUM AND | | 1.010 INCHES MAXIMUM | | HEAD HEIGHT | 0.302 INCHES MINIMUM AND | | 0.322 INCHES MAXIMUM | | POINT STYLE | FLAT |
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