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National Stock Number:
5305-00-138-6206
Federal Supply Class:
5305
National Item Identification Number:
001386206
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:
| 2518790 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| FASTENER LENGTH | 0.440 INCHES NOMINAL | | HEAD DIAMETER | 0.750 INCHES NOMINAL | | HEAD HEIGHT | 0.810 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 4 | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | POINT DIAMETER | 0.230 INCHES NOMINAL | | POINT LENGTH | 0.070 INCHES NOMINAL | | POINT STYLE | CHAMFER DOG | | SHOULDER DIAMETER | 0.418 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.100 INCHES NOMINAL FIRST SHOULDER | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.270 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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