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National Stock Number:
5305-00-780-7538
Federal Supply Class:
5305
National Item Identification Number:
007807538
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:
| 10066252 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 1.375 INCHES NOMINAL | | HEAD DIAMETER | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 0.375 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT STYLE | FLAT | | SHOULDER DIAMETER | 0.500 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.375 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.375 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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