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National Stock Number:
5305-00-825-3446
Federal Supply Class:
5305
National Item Identification Number:
008253446
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:
| 1C6138P03 | 07482 | GENERAL ELECTRIC COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.480 INCHES MINIMUM AND | | 0.520 INCHES MAXIMUM | | FASTENER LENGTH | 1.720 INCHES MINIMUM AND | | 1.760 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4130 OR | | STEEL COMP 4140 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL | | HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND | | 36.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.720 INCHES MINIMUM AND | | 0.780 INCHES MAXIMUM | | HEAD HEIGHT | 0.360 INCHES MINIMUM AND | | 0.400 INCHES MAXIMUM | | POINT STYLE | POINTLESS | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.326 INCHES MINIMUM AND | | 0.328 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.980 INCHES MINIMUM AND | | 1.020 INCHES MAXIMUM FIRST SHOULDER | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 07482 | | DESIGN CONTROL REFERENCE | 1C6138P03 |
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