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National Stock Number: 5306-00-286-3482
Federal Supply Class: 5306
National Item Identification Number: 002863482
Description: BOLT,SQUARE NECK
Detail: A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
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Manufacturer Information:
| 70-5-14 | 80049 | DEPARTMENT OF THE AIR FORCE | | FFB571ANDTYPEC | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
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Techincal Specification:
| FASTENER LENGTH | 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM | | HEAD DIAMETER | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM | | HEAD HEIGHT | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM | | HEAD STYLE | BUTTON | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 48000 POUNDS PER SQUARE INCH | | NECK LENGTH | 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM | | NECK WIDTH | 0.300 INCHES MINIMUM AND 0.326 INCHES MAXIMUM | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | NONDEFINITIVE SPEC/STD DATA | C2 TYPE | | SPECIAL FEATURES | W/SQ NUT | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.750 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
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