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National Stock Number:
5305-01-080-0676
Federal Supply Class:
5305
National Item Identification Number:
010800676
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:
| 6000967 | 29381 | GICHNER SYSTEMS GROUP, INC. | | 6000967-1 | 29381 | GICHNER SYSTEMS GROUP, INC. | | FM-B-208666 | 29381 | GICHNER SYSTEMS GROUP, INC. | | SM-B-20866 | 29381 | GICHNER SYSTEMS GROUP, INC. |
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Techincal Specification:
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.812 INCHES NOMINAL | | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | | FASTENER LENGTH | 2.281 INCHES MINIMUM AND 2.312 INCHES MAXIMUM | | FIRST DIAMETER FROM HEAD | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM | | HEAD HEIGHT | 0.875 INCHES NOMINAL | | HEAD STYLE | THUMB NO. 4 | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 304 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT LENGTH | 0.125 INCHES NOMINAL | | POINT STYLE | CONE | | POINT CHAMFER ANGLE | 90.0 DEGREES NOMINAL | | WIDTH BETWEEN FLATS | 1.062 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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