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National Stock Number:
5305-01-064-3595
Federal Supply Class:
5305
National Item Identification Number:
010643595
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:
| 128ABM10100-7 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 128ABM10100-7 | 79RG9 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.531 INCHES MINIMUM AND | | 1.562 INCHES MAXIMUM | | FASTENER LENGTH | 2.375 INCHES NOMINAL | | MATERIAL | STEEL COMP 4130 OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | KNURLED NO. 1 | | HEAD DIAMETER | 0.625 INCHES NOMINAL | | HEAD HEIGHT | 0.375 INCHES NOMINAL | | HOLE CONFIGURATION STYLE | ROUND LONGITUDINAL HOLE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 1 | | HOLE DIAMETER | 0.063 INCHES NOMINAL | | POINT STYLE | FLAT | | POINT LENGTH | 0.782 INCHES NOMINAL | | POINT DIAMETER | 0.247 INCHES MINIMUM AND | | 0.248 INCHES MAXIMUM | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | SPECIAL FEATURES | HOLE IN SHANK 0.133 IN. DIA,1.187 IN. FROM BEARING SURFACE OF HEAD TO CENTER OF HOLE | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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