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National Stock Number:
5305-01-218-4908
Federal Supply Class:
5305
National Item Identification Number:
012184908
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:
| SM-C-950198 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| FASTENER LENGTH | 1.859 INCHES MINIMUM AND 1.891 INCHES MAXIMUM | | HEAD HEIGHT | 0.984 INCHES MINIMUM AND 1.016 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES AND QQ-S-766 FED SPEC ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL COMP 302 AND STEEL COMP 304 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | POINT STYLE | CONE | | WIDTH BETWEEN FLATS | 1.484 INCHES MINIMUM AND 1.516 INCHES MAXIMUM | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.554 INCHES MINIMUM AND 0.586 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 18 |
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