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National Stock Number:
5305-01-276-8596
Federal Supply Class:
5305
National Item Identification Number:
012768596
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:
| 0N364340 | 98230 | NATIONAL SECURITY AGENCY | | 0N364340-1 | 98230 | NATIONAL SECURITY AGENCY | | THS-3052M07F09 | 04729 | UNICORP. |
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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 | 0.395 INCHES MINIMUM AND | | 0.505 INCHES MAXIMUM | | FASTENER LENGTH | 0.495 INCHES MINIMUM AND | | 0.505 INCHES MAXIMUM | | MATERIAL | STEEL COMP 303 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.490 INCHES MINIMUM AND | | 0.510 INCHES MAXIMUM | | HEAD HEIGHT | 0.245 INCHES MINIMUM AND | | 0.255 INCHES MAXIMUM | | POINT STYLE | FLAT |
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