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National Stock Number: 5306-00-274-8082
Federal Supply Class: 5306
National Item Identification Number: 002748082
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:
| MILH55053 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM | | FASTENER LENGTH | 3.250 INCHES NOMINAL | | HEAD DIAMETER | 1.172 INCHES MINIMUM AND 1.252 INCHES MAXIMUM | | HEAD STYLE | FLAT COUNTERSUNK | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH | | NECK LENGTH | 0.453 INCHES MINIMUM AND 0.493 INCHES MAXIMUM | | NECK WIDTH | 0.750 INCHES MINIMUM AND 0.765 INCHES MAXIMUM | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.750 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | THREAD QUANTITY PER INCH | 10 |
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