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National Stock Number: 5305-01-020-2020
Federal Supply Class: 5305
National Item Identification Number: 010202020
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:
3022916-124-3 | 99696 | LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN SYSTEMS & GLOBAL SOLUTIONS |
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Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.400 INCHES NOMINAL | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 3.730 INCHES NOMINAL | FASTENER LENGTH | 4.130 INCHES NOMINAL | FIRST DIAMETER FROM HEAD | 0.500 INCHES NOMINAL | HEAD DIAMETER | 0.750 INCHES NOMINAL | HEAD HEIGHT | 0.190 INCHES NOMINAL | HEAD STYLE | KNURLED NO. 1 | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | MATERIAL | STEEL COMP 303 OVERALL | NOMINAL THREAD DIAMETER | 0.190 INCHES | POINT STYLE | POINTLESS | SECOND DIAMETER FROM HEAD | 0.150 INCHES NOMINAL | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | PASSIVATE OVERALL | THREAD CLASS | 2A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.312 INCHES NOMINAL | THREAD QUANTITY PER INCH | 32 | THREAD SERIES DESIGNATOR | UNF |
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