UNI 5933 – Hexagon Socket Countersunk Head Cap Screws

(DIN 7991 | ISO 10642 | IS 6761 Equivalent)

Leading Manufacturer, Exporter, Supplier, Stockist – Dipti Metal Industries

Founded in 2009 by Kumpsingh Rajput, Dipti Metal Industries is a trusted manufacturer, exporter, supplier, dealer, distributor, and wholesaler of UNI 5933 Hexagon Socket Countersunk Head Cap Screws in India, exporting worldwide. Our products are manufactured in compliance with UNI 5933 specifications and equivalent standards DIN 7991, ISO 10642, and IS 6761.

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Product Overview

Hexagon Socket Countersunk Head Cap Screws are precision fasteners designed for applications requiring a flush finish. The countersunk head allows the screw to sit flush with the surface, while the hexagon socket enables high torque tightening using Allen keys.

Standards & Equivalents:

• Current Norm: DIN EN ISO 10462

• Equivalent Norms: DIN 7991, ISO 10642, IS 6761

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Technical Specifications

• Thread Type: Metric (ISO) Coarse / Fine Pitch

• Head Type: Countersunk, 90° angle

• Drive Type: Hexagon Socket (Allen)

• Size Range: M3 to M30

• Length Range: 6 mm to 200 mm

• Thread Coverage: Full or partial thread as per request

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Available Material Grades

Carbon Steel

Grades: 4.6, 5.6, 6.8, 8.8, 10.9, 12.9 (heat-treated for high tensile strength)

Stainless Steel

Grades: A2-50, A2-70, A4-70, A4-80 (SS 304, SS 316, SS 316L)

Alloy Steel

High tensile, quenched, and tempered alloy grades for demanding applications

Non-Ferrous Metals

Brass: CZ121, CW614N
Copper Alloys: Naval Brass, Silicon Bronze

Special Alloys (on request)

• Duplex 2205, Super Duplex 2507

• Monel 400, Monel K500

• Inconel 600, 625, 718

• Hastelloy C22, C276

• Titanium Grade 2, 5

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Coating, Plating & Surface Treatments

Zinc Plating

Bright Zinc Plating (BZP), Blue/Yellow Passivated Zinc – MacDermid ZinKlad® 96 / 250 / 1000

Hot Dip Galvanizing (HDG)

ISO 1461 compliant – Denso® Galvashield

Black Oxide

Low-reflective finish with mild corrosion resistance

Geomet® Coating

Geomet® 321 / 500 – Automotive-grade, Cr(VI)-free protection

Dacromet® Coating

Dacromet® 320 / 500 – Zinc-aluminum flake coating for extreme environments

Electroless Nickel Plating

Uniform, high-hardness nickel layer with excellent corrosion resistance

Zinc-Nickel Plating (ZnNi)

12–15% nickel content – Atotech® Zinni® 220

Phosphate Coating

Manganese/Zinc phosphate with oil impregnation for anti-galling

PTFE / Xylan® Coating

Xylan® 1070 / 1424 – Non-stick, low-friction, chemical-resistant

Cadmium Plating (Aerospace use only)

LHE® Cadmium – exceptional marine corrosion resistance

Chrome Plating

Triple-layer copper-nickel-chrome for durability and appearance

Anodizing (for aluminum variants)

Clear, black, or colored oxide layer for enhanced protection

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Applications

• Machinery and equipment assembly

• Aerospace and automotive industries

• Marine and offshore structures

• Furniture and architectural installations

• Industrial and precision engineering

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Manufacturing & Quality Assurance

• CNC precision machining and cold/hot forging

• Dimensional inspection, tensile and hardness testing

• Coating thickness and corrosion resistance testing (Salt Spray Test)

• Full traceability with EN 10204 3.1 / 3.2 certificates

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Export & Packing Details

• Packing: Bulk cartons, small boxes, or wooden pallets

• Marking: Standard, size, grade, and batch number

• Dispatch Ports: Nhava Sheva, Mundra, Chennai

• Shipping Terms: EXW, FOB, CFR, CIF, DDP

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Global Export Markets

Our UNI 5933 Hexagon Socket Countersunk Head Cap Screws are exported to North America, South America, Europe, Middle East, Africa, and Asia-Pacific, supporting industries like construction, oil & gas, shipbuilding, and heavy engineering.

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Why Choose Dipti Metal Industries?

• Over 15 years of manufacturing expertise

• Global supply to 40+ countries

• Wide material grade selection

• Rapid delivery and competitive pricing

• Proven track record in large-scale and custom projects