Fasteners

Square Nuts

Square Nuts have four flat sides and are used where a large bearing surface or anti-rotation feature is useful in the assembly design.

Design

The square profile provides a large bearing area and can assist with anti-rotation in suitable assemblies.

Materials & Grades

Applicable carbon steel, alloy steel and stainless steel options can be evaluated.

Dimensions

Thread, width across flats, thickness and corner geometry should be specified.

Applications

Fabrication, machinery, channels, tracks and assemblies designed around square-nut geometry.

Standards

The applicable dimensional and material standards depend on the specified square-nut design.

ASTM A194/A194M — High-Pressure / High-Temperature Nuts

Where the nut is specified for high-pressure or high-temperature service, ASTM A194/A194M is a key material specification covering carbon steel, alloy steel and martensitic/austenitic stainless steel nuts. ASTM currently lists A194/A194M-26 as active. Exact grade/class, size and service requirements must be matched to the governing specification; ASTM states that grade substitutions require purchaser permission.

Manufacturing & Sourcing

BCUBE operates through manufacturing and sourcing capabilities. Requirements can be evaluated from drawing, material, grade, standard, dimensions and quantity.

Certification & Inspection

EN 10204:3.1 material certificates and Indian or international third-party inspection can be supported where required by the order and agreed inspection scope.

Current & Previous Editions

Where a standard has multiple editions, BCUBE will identify the current edition and retain relevant previous editions for project-specific procurement searches. The client's approved drawing, specification and purchase order remain the controlling documents.

Related Products

Hex Nuts · Heavy Hex Nuts · Plain Washers · Hex Bolts · Stud Bolts

Technical accuracy note: Exact grade, edition, dimensions and performance requirements must be confirmed against the governing specification and project requirement. Numerical tables will be added only after specification-by-specification verification.
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