Custom & Non-Standard Nuts Manufacturer

DIU Auto Parts (Brand of Sai Overseas ) is renowned manufacturer, exporter and supplier of custom and non-standard nuts made to drawing, sample, or specification across a full range of materials and processes, including hot forging, cold heading, and CNC machining for precision and heavy-duty applications. Products include heavy hex, hex, flange, lock, weld, square, cap, acorn, coupling, slotted/castellated, wing, T, knurled, and special-profile nuts with metric, UNC/UNF, BSW, ACME, and custom threads as required. Materials offered: carbon steel, alloy steel (e.g., 42CrMo4), stainless steels (304/316/904L), brass, copper, aluminum, titanium, Inconel, and duplex/super duplex with test certifications on request. Finishes and coatings: zinc (white/blue), hot-dip galvanizing, black oxide, phosphate, dacromet, nickel, PTFE, and custom platings with RoHS options. Capability to manufacture per DIN/ISO/ANSI/ASTM standards or fully bespoke to customer drawings, with options for PPAP, material traceability, and third-party inspections for critical industries including automotive, oil & gas, marine, construction, heavy machinery, and general engineering. Small batches to large production runs supported, with fast lead times, stringent quality control, and packaging per export or project requirements.

Castle Nut - Winged, Hexagonal, Slotted - Brass, Stainless Steel, Alloy, Forging

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Approx. Price: Rs 10 / PieceGet Latest Price

Product Details:

Minimum Order Quantity	1000 Piece
Country of Origin	Made in India
Size Available	M4–M64 standard; larger sizes on request.
Surface Finish	Plain/oiled, zinc plated, hot-dip galvanized (HDG), black oxide or metal plated
Customization	Non-standard sizes, thin patterns, special slot geometries, materials, and finishes made to drawing
Material	Stainless Steel
Material Options	Carbon steel and alloy steel, stainless steel, brass

DIU Auto Parts (Brand of Sai Overseas) is a renowned manufacturer, exporter and supplier of Castle nuts. Castle Nuts (castellated nuts) are hex nuts with a slotted crown designed to lock with a cotter pin through a pre-drilled bolt or axle, providing secure retention in vibration-prone assemblies. Manufactured to DIN 935 and equivalent ISO standards, they are supplied in carbon/alloy steel grades 4, 8, 10 and stainless A2/A4, with metric and inch threads, thin variants, and custom sizes from M4 up to M64+ for OEM applications. Typical uses include automotive hubs, machinery pivots, linkages, and safety-critical joints where positive mechanical locking is required; differences from slotted nuts include the turned-down turret section on castle nuts aiding pin wrap and clearance. Options include zinc, HDG, black oxide, and stainless finishes, PPAP/MTC documentation, and export packaging from qualified manufacturers, exporters, and suppliers

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Item Code: DIU-CastleNut
Production Capacity: 100000
Delivery Time: As per Order
Packaging Details: As per client requirements

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Acorn Dome Cap Nuts - Stainless Steel, Alloy, Carbon Steel, Brass - Crown & Low Crown Custom Specs

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Approx. Price: Rs 15 / PieceGet Latest Price

Product Details:

Minimum Order Quantity	1000 Piece
Shape	Dome
Surface Finish	Zinc plated, hot-dip galvanized, black oxide, nickel/chrome plated, plain/oiled; as per request
Diameter	As per custom specifications
Size	As per custom specifications
Usage/Application	Automotive, machinery, furniture, marine, construction fittings, and general engineering
Country of Origin	Made in India
Types	Closed-end dome (standard), open-end, washer-base closed, washer-base open; low-crown and high-crown
Supply Scope	Manufacturer, exporter, and supplier for OEM and replacement markets; small to large batch runs.
Material	Stainless Steel
Materials	Carbon steel, alloy steel, stainless steel A2/304 and A4/316, brass; special alloys on request.

DIU Auto Parts (Brand of Sai Overseas) is reliable Manufacturer, Exporter and Supplier ofAcorn Nuts. Also known as dome or cap nuts, these are hexagonal nuts with a closed, domed end that shields protruding bolt threads while delivering a neat, finished appearance for safety and aesthetics in assemblies. Manufactured to DIN 1587 and SAE J483 with metric and inch threads, these fasteners are offered in closed-end, open-end, and washer-base variants to suit installation and clearance needs across equipment and fabrications. Standard materials include carbon and alloy steels for strength, A2/304 and A4/316 stainless for corrosion resistance, and brass for decorative or non-sparking applications, with finishes such as zinc, hot-dip galvanizing, black oxide, nickel, and chrome as per environment and visual requirements. Typical stock spans M4–M30 and common UNC/UNF sizes, with custom manufacturing up to M38–M40 and 2 inch threads for OEM specifications and engineered projects. As a dedicated manufacturer, exporter, and supplier, capabilities include PPAP, MTC traceability, third-party inspection, and export-grade packaging to support automotive, marine, construction, and general engineering supply chains globally

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Additional Information:

Item Code: DIU-AcornNut
Production Capacity: 100000
Delivery Time: As per order
Packaging Details: As per buyer need

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Custom & Non-Standard Nuts Manufacturer

Castle Nut - Winged, Hexagonal, Slotted - Brass, Stainless Steel, Alloy, Forging

Acorn Dome Cap Nuts - Stainless Steel, Alloy, Carbon Steel, Brass - Crown & Low Crown Custom Specs

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