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National Stock Number: 5305-00-338-4222
Federal Supply Class: 5305
National Item Identification Number: 003384222
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:
1138056-1 | 12705 | BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION I | 1138056-1 | 94117 | BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. |
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Techincal Specification:
FASTENER LENGTH | 2.432 INCHES NOMINAL | HEAD DIAMETER | 0.400 INCHES NOMINAL | HEAD HEIGHT | 0.820 INCHES NOMINAL | HEAD STYLE | KNURLED NO. 1 | NOMINAL THREAD DIAMETER | 0.190 INCHES | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | SHOULDER DIAMETER | 0.365 INCHES NOMINAL FIRST SHOULDER | SHOULDER DIAMETER | 0.400 INCHES NOMINAL SECOND SHOULDER | SHOULDER SHAPE | ROUND ALL SHOULDERS | SHOULDER LENGTH | 0.800 INCHES NOMINAL FIRST SHOULDER | SHOULDER LENGTH | 1.320 INCHES NOMINAL SECOND SHOULDER | THREAD DIRECTION | RIGHT-HAND | THREAD CLASS | 2A | THREAD LENGTH | 0.312 INCHES MINIMUM | THREAD SERIES DESIGNATOR | UNF | THREAD QUANTITY PER INCH | 32 |
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