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SQUARE NUT

Parameter Category	Description
Material	Carbon steel, stainless steel (304/316), brass, alloy steel
Surface Treatment	Hot-dip galvanizing, electroplating (zinc, nickel), black oxide, passivation
Standard Specifications	Complies with ISO 4032, GB/T 39, DIN 557, ANSI B18.2.2
Thread Specifications	M3-M64 , 1/4"-2"

Overview
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Structural Features

Four-sided outer profile, internal threads matching bolts. Square shape increases tool/workpiece contact area, reducing slip during installation/removal.

Performance Advantages

High torque capacity, anti-rotation/loosening under heavy load; simple, low-cost, easy to install in narrow spaces; embeddable for fixed-position fastening.