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National Stock Number:
5305-00-042-0438
Federal Supply Class:
5305
National Item Identification Number:
000420438
Description:
SCREW,ASSEMBLED WASHER
Detail:
A SCREW, (as modified) to which has been assembled one or more nonremovable washer(s).
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Manufacturer Information:
| 420438 | 21450 | ARMY WEAPONS COMMAND ATTN AMSWE-REE-S |
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Techincal Specification:
| FASTENER LENGTH | 0.250 INCHES NOMINAL | | HEAD DIAMETER | 0.217 INCHES MINIMUM AND 0.236 INCHES MAXIMUM | | HEAD HEIGHT | 0.083 INCHES MINIMUM AND 0.095 INCHES MAXIMUM | | HEAD STYLE | ROUND | | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.125 INCHES | | PRIMARY WASHER MATERIAL THICKNESS | 0.016 INCHES NOMINAL | | PRIMARY WASHER OUTSIDE DIAMETER | 0.258 INCHES MINIMUM AND 0.268 INCHES MAXIMUM | | PRIMARY WASHER STYLE | FLAT INTERNAL TEETH | | WASHER QUANTITY | 1 | | SURFACE TREATMENT | CADMIUM OR ZINC OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.250 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 40 | | THREAD SERIES DESIGNATOR | UNC |
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