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National Stock Number:
5305-00-207-7708
Federal Supply Class:
5305
National Item Identification Number:
002077708
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:
| A460-1823 | 15280 | NORTHROP GRUMMAN SYSTEMS CORPORATION DIV ES DEFENSIVE SYSTEMS DIVISION | | A460-1823 | 26916 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A460-1823 | 55631 | SCOMILL INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.438 INCHES MINIMUM | | FASTENER LENGTH | 2.312 INCHES NOMINAL | | MATERIAL | COPPER ALLOY 360 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.500 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | POINT STYLE | FLAT | | SPECIAL FEATURES | PILOT HOLE IN BOTTOM OF THREADED PORTION PERMISSABLE |
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