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National Stock Number:
5305-01-170-4565
Federal Supply Class:
5305
National Item Identification Number:
011704565
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:
| 74D291037-2059 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 1.600 INCHES NOMINAL | | HEAD DIAMETER | 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM | | HEAD HEIGHT | 0.500 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 4 | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4640 ALLOY 630 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER OVERALL | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | POINT STYLE | FULL DOG | | SHOULDER DIAMETER | 0.610 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.350 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SPECIAL FEATURES | DIAMOND KNURL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.600 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNEF |
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