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National Stock Number:
5305-01-267-0040
Federal Supply Class:
5305
National Item Identification Number:
012670040
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:
| JCM-15236-109 | 58905 | STRIKE WEAPONS AND UNMANNED AVIATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES NOMINAL | | FASTENER LENGTH | 3.940 INCHES NOMINAL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | KNURLED NO. 6 | | HEAD DIAMETER | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 1.750 INCHES NOMINAL | | POINT STYLE | FLAT | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.875 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.690 INCHES NOMINAL FIRST SHOULDER | | SPECIAL FEATURES | COTTER PIN HOLE IN THREADS 0.125 IN. DIA; WASHER WELDED UNDER HEAD | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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