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National Stock Number:
5305-00-147-6392
Federal Supply Class:
5305
National Item Identification Number:
001476392
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:
| 118B2601 | 97993 | GENERAL DYNAMICS DEFENSE SYSTEMS INC. DBA GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.530 INCHES MINIMUM AND | | 0.590 INCHES MAXIMUM | | FASTENER LENGTH | 2.906 INCHES MINIMUM AND | | 3.000 INCHES MAXIMUM | | MATERIAL | STEEL COMP 304L OR | | STEEL COMP 316L OR | | STEEL COMP 302 OR | | STEEL COMP 347 OR | | STEEL COMP 321 OR | | STEEL COMP 317 OR | | STEEL COMP 316 OR | | STEEL COMP 310 OR | | STEEL COMP 309 OR | | STEEL COMP 305 OR | | STEEL COMP 304 OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | THUMB NO. 7 | | HEAD HEIGHT | 0.480 INCHES MINIMUM AND | | 0.554 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 1.350 INCHES MINIMUM AND | | 1.410 INCHES MAXIMUM | | POINT STYLE | FLAT | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FIRST DIAMETER FROM HEAD | 0.175 INCHES MINIMUM AND | | 0.185 INCHES MAXIMUM | | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 2.316 INCHES MINIMUM AND | | 2.470 INCHES MAXIMUM | | SPECIAL FEATURES | WING MATL STEEL AISI 347 | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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