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Copper C11000 (ETP) Nuts Manufacturer & Exporter in India

Explore Copper C11000 (ETP) Nuts Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-100

Min Temp

260

Max Temp

🌡

260

Suitable for continuous service up to approximately 260°C under typical operating conditions.

⚡

220

Typical tensile strength around 220 MPa depending on product form and heat treatment.

🛡

Good

Good corrosion resistance in a wide range of industrial environments.

⚖

8.96

Typical density is approximately 8.96 g/cm³.

Product Overview

What are Copper C11000 (ETP) Nuts?

Copper C11000 (ETP) nuts are high-conductivity fasteners manufactured from electrolytic tough pitch copper, designated as UNS C11000. These nuts are produced to ASTM B187 and B152 standards, offering a minimum copper content of 99.90% for exceptional electrical and thermal conductivity. C11000 nuts are non-magnetic, ductile, and corrosion-resistant, making them ideal for electrical, thermal, and architectural fastening applications where conductivity and corrosion resistance are critical.

Commonly used in busbar assemblies, switchgear, transformer connections, and earthing systems, Copper C11000 (ETP) nuts are available in hex, square, and custom shapes, conforming to DIN, ISO, and ASME dimensional standards. Each batch is supplied with full traceability and test certification for electrical and mechanical properties.

Quick Specifications

MaterialCopper C11000 (ETP)
UNS NumberC11000
DIN Number2.0060
Material StandardASTM B187 / ASTM B152
Nut Standard (Metric)DIN 934 / ISO 4032
Nut Standard (Inch)ASME B18.2.2
Thread FormISO Metric / UNC / UNF
Size RangeM4-M64 / ¼"-2½"
Tensile Strength210 MPa (30 ksi) min
Yield Strength69 MPa (10 ksi) min
Hardness45-80 HV (annealed)
? All nuts supplied with electrical conductivity and mechanical test certification. 100% traceability guaranteed.

Complete the Fastener Set

Other Copper C11000 (ETP) Fastener Products Available from RealBolt

RealBolt also manufactures the complete Copper C11000 (ETP) fastener range from certified copper alloy bar stock, including Copper C11000 (ETP) Bolts, Copper C11000 (ETP) Screws, Copper C11000 (ETP) Washers, Copper C11000 (ETP) Studs, and Copper C11000 (ETP) Threaded Rods. All Copper C11000 (ETP) fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Copper C11000 (ETP) Bolts
Copper C11000 (ETP) Screws
Copper C11000 (ETP) Washers
Copper C11000 (ETP) Studs
Copper C11000 (ETP) Threaded Rods

Technical Data

Copper C11000 (ETP) Nuts Dimensions, Sizes & Thread Standards

Copper C11000 (ETP) Nuts are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 934 (hex nut) / ISO 4032. Custom sizes and shapes available. Inch dimensions per ASME B18.2.2. All Copper C11000 (ETP) nuts dimensions are verified against applicable DIN, ISO, and ASME B18 standards before dispatch

Hex Nut Dimensions - Metric (DIN 934 / ISO 4032)

Size (M)Pitch (mm)A/F (mm)Height (mm)
M40.773.2
M61.0105.0
M81.25136.5
M101.5178.0
M121.751910.0
M162.02413.0
M202.53016.0
M243.03619.0
M303.54624.0
M364.05529.0
M424.56534.0
M485.07538.0
M565.58545.0
M646.09551.0

Dimensional & Material Standards

StandardCoversThread
DIN 934Hex nutsMetric
ISO 4032Hex nutsMetric
ASME B18.2.2Hex & heavy hex nutsUNC/UNF
DIN 439Thin hex nutsMetric
ISO 4035Thin hex nutsMetric
Material StandardRequirement
ASTM B187Bar/rod - C11000
ASTM B152Plate/sheet - C11000
EN 13601Copper rod for electrical purposes
EN 12165Copper alloy forging stock
EN 10204 3.1Mill test certificate

Material Chemistry

Copper C11000 (ETP) Chemical Composition

Copper C11000 (ETP) Nuts are produced from either tin-stabilized Naval Brass C46400 or aluminium-nickel-iron Aluminium Bronze C63000, with elemental limits per ASTM and MIL-B-24059. Tin (0.5–1%) in Naval Brass prevents dezincification in seawater; aluminium and nickel additions in Al Bronze C63000 provide non-sparking ATEX Zone 1 compliance.

Chemical Composition per ASTM B187 / B152

ElementComposition (%)
Copper (Cu)99.90% min
Silver (Ag)0.002% min (included in Cu)
Oxygen (O)0.02-0.04%
Other Elements (total)0.03% max
? All heats verified by spectrometry and conductivity testing. Full PMI available on request.

Why Copper C11000 (ETP) Alloy Composition Matters for Nuts

99.90% Cu — Maximum Conductivity
The high copper content ensures electrical conductivity = 101% IACS, making C11000 nuts ideal for busbar, switchgear, and earthing connections where minimal resistance is critical.
Oxygen Content — ETP Grade
The controlled oxygen content (0.02–0.04%) in ETP copper improves workability and enables reliable cold forming of nuts, while maintaining excellent conductivity and corrosion resistance.
Trace Silver — Enhanced Performance
Trace silver content further boosts conductivity and thermal performance, ensuring C11000 nuts outperform commercial bronze or brass in demanding electrical applications.

Fastener Performance

Copper C11000 (ETP) Nuts Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Copper C11000 (ETP) Nuts per ASTM. Copper C11000 (ETP) nuts achieve 220 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Nut SizeRecommended Torque (Nm)Clamp Load (kN)
M663.5
M8156.5
M103010.5
M125015.0
M1612025.0
M2024040.0
M2442060.0
M30850100.0
?? Anti-seize: Use copper-based anti-seize for threaded assemblies. Values are for lubricated threads (K=0.18). Avoid overtightening to prevent thread galling.

Industry Applications

Copper C11000 (ETP) Nuts Applications — Industries & End Uses

Copper C11000 (ETP) Nuts from RealBolt are specified across marine hardware, ATEX hazardous areas, and naval defence where good corrosion resistance and 220 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Copper C11000 (ETP) nuts are the standard for busbar joints, switchgear terminals, transformer connections, and earthing systems. Their high conductivity ensures minimal voltage drop and reliable current transfer in substations and power panels.
Used in track bonding, signal grounding, and overhead catenary assemblies, C11000 nuts provide corrosion-resistant, high-conductivity fastening for critical railway electrical infrastructure.
Ideal for fastening copper busbars, terminal blocks, and grounding bars in industrial control cabinets, motor control centers, and automation panels where electrical performance and corrosion resistance are essential.
Copper C11000 nuts are specified for solar panel grounding, wind turbine earthing, and battery storage busbar connections, ensuring safe, low-resistance electrical paths in renewable energy systems.

Copper C11000 (ETP) Nuts Standards & International Certifications

Copper C11000 (ETP) Nuts from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, Lloyds Register or DNV certification, MIL specification documentation, and PMI (XRF) reports — available on request for all orders.
Standards
DIN 934 ISO 4032 ASME B18.2.2 BS 1768 BS EN ISO 4032 IS 1367
Certifications
ISO 9001:2015RoHS CompliantNABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Copper C11000 (ETP) Nuts from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Copper C11000 (ETP) Nuts — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
022-6743-7972
+91 90226 36025
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Answers for Buyers

Copper C11000 (ETP) Nuts — Frequently Asked Questions

Browse expert answers to common questions about Copper C11000 (ETP) Nuts from RealBolt — covering alloy selection, ATEX Zone 1 compliance, dezincification resistance, ASTM standard, sizes, and EN 10204 documentation. Contact our technical team directly for project-specific guidance on Copper C11000 (ETP) nuts selection and pricing.
Copper C11000 (ETP) nuts are available to DIN 934 (metric hex), ISO 4032, ASME B18.2.2 (inch hex and heavy hex), and DIN 439/ISO 4035 (thin hex). Custom shapes and threads (UNC, UNF, BSW) can be supplied on request with short lead times.
Yes – C11000 nuts are specifically designed for high-current busbar and switchgear connections, offering =101% IACS conductivity and low contact resistance. Always use with matching copper bolts or studs for optimal performance.
Copper C11000 nuts offer excellent corrosion resistance in most environments, including industrial atmospheres and marine locations. For highly aggressive or acidic conditions, consider tin-plated or nickel-plated copper nuts for enhanced durability.
No MOQ for standard sizes (M6-M24) held in stock – single pieces can be supplied for urgent needs. Custom sizes or finishes may require a minimum batch of 5 kg. Quantity discounts apply at 50, 200, and 500 pieces.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
  • Mysuru
  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
  • Rajkot
  • Sanand
  • Surat
  • Thane
  • Tiruppur
  • Vadodara
  • Visakhapatnam

Countries We Export To:

  • US
  • Canada
  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
  • Belgium
  • Poland
  • Sweden
  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
  • Nigeria
  • Australia
  • New Zealand
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Brazil