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National Stock Number: 5306-01-491-9986
Federal Supply Class: 5306
National Item Identification Number: 014919986
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:
12335260-2 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM | FASTENER LENGTH | 2.250 INCHES NOMINAL | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL | HEAD DIAMETER | 1.250 INCHES MINIMUM AND 1.303 INCHES MAXIMUM | HEAD STYLE | FLAT COUNTERSUNK | MATERIAL | STEEL OVERALL | NECK LENGTH | 1.709 INCHES MINIMUM AND 1.759 INCHES MAXIMUM | NECK WIDTH | 0.750 INCHES MINIMUM AND 0.765 INCHES MAXIMUM | NOMINAL THREAD DIAMETER | 0.750 INCHES | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TYPE 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | SURFACE TREATMENT | ZINC OVERALL | THREAD CLASS | 2A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 1.250 INCHES MINIMUM | THREAD QUANTITY PER INCH | 10 | THREAD SERIES DESIGNATOR | UNC |
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