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Copper C11000 (ETP) Screws Manufacturer & Exporter in India

Explore Copper C11000 (ETP) Screws 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) Screws?

Copper C11000 (ETP) screws are high-conductivity fasteners manufactured from electrolytic tough pitch copper, designated as UNS C11000. These screws are produced in accordance with ASTM B187 and ASTM F468 standards, ensuring a minimum copper content of 99.9% and excellent electrical and thermal conductivity. C11000 screws are non-magnetic, ductile, and offer outstanding resistance to atmospheric and industrial corrosion, making them ideal for electrical, electronic, and architectural applications.

With their superior conductivity and malleability, Copper C11000 (ETP) screws are widely specified for busbar assemblies, switchgear, transformer connections, and decorative hardware where both electrical performance and aesthetic finish are critical.

Quick Specifications

MaterialCopper C11000 (ETP)
UNS NumberC11000
DIN Number2.0060
Material StandardASTM B187
Screw Standard (Metric)DIN 963 / DIN 965 / ISO 7046
Screw Standard (Inch)ASME B18.6.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM2-M24 / #2-1"
Tensile Strength210 MPa (30 ksi) min
Yield Strength69 MPa (10 ksi) min
Hardness45 HV max
? All material certified by NABL-accredited laboratory. PMI and conductivity testing available on request.

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) Nuts, 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) Nuts
Copper C11000 (ETP) Washers
Copper C11000 (ETP) Studs
Copper C11000 (ETP) Threaded Rods

Technical Data

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

Copper C11000 (ETP) Screws are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 963 (slotted countersunk), DIN 965 (cross recessed), ISO 7046, and ASME B18.6.3. Custom lengths in 2mm increments. Inch dimensions available per ASME B18.6.3. All Copper C11000 (ETP) screws dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Machine Screw Dimensions - Metric (DIN 963 / DIN 965)

Size (M)Pitch (mm)Head Dia (mm)Head Ht (mm)Min L (mm)Max L (mm)
M20.44.01.2440
M30.56.01.65650
M40.78.02.2860
M50.810.02.51070
M61.012.03.01280
M81.2516.04.016100
M101.520.05.020120
M121.7524.06.024150
M162.032.08.032200
M202.540.010.040250
M243.048.012.048300

Dimensional & Material Standards

StandardCoversThread
DIN 963Slotted countersunk screwsMetric
DIN 965Cross recessed countersunk screwsMetric
ISO 7046Countersunk head screwsMetric
ASME B18.6.3Machine screwsUNC/UNF
Material StandardRequirement
ASTM B187Bar/rod - UNS C11000
ASTM F468Fastener mechanical
EN 13601Copper rod for electrical purposes
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Copper C11000 Chemical Composition

Copper C11000 (ETP) Screws 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

ElementComposition (%)
Copper (Cu)99.90% min
Silver (Ag)0.002% min
Oxygen (O)0.02-0.04%
Other Elements0.05% max (total)
? All heats verified by NABL-accredited spectrometry. Conductivity and oxygen content tested per ASTM B193.

Why Copper C11000 (ETP) Alloy Composition Matters for Screws

99.9% Copper — Maximum Conductivity
C11000 (ETP) copper delivers electrical conductivity of at least 101% IACS, making these screws ideal for current-carrying connections in busbars, switchgear, and transformer terminals.
Oxygen Content — Weldability & Ductility
The controlled oxygen content (0.02–0.04%) ensures excellent cold workability and allows for reliable soldering and brazing of screw heads and threads in electrical assemblies.
Trace Silver — Enhanced Corrosion Resistance
The trace silver content further improves resistance to tarnishing and atmospheric corrosion, ensuring long-term performance in exposed or decorative applications.

Fastener Performance

Copper C11000 (ETP) Screws Mechanical Properties & Torque Reference

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

Screw SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M41.21.01.2
M63.52.82.8
M88.06.45.0
M1016.012.88.0
M1228.022.412.0
M1670.056.020.0
?? Soft Material: Copper screws are softer than steel. Use low torque and avoid over-tightening. Lubricated values assume K=0.18. For electrical connections, ensure full thread engagement for optimal conductivity.

Industry Applications

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

Copper C11000 (ETP) Screws 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 screws are the preferred choice for busbar connections, switchgear terminals, transformer windings, and earthing systems due to their unmatched electrical conductivity and corrosion resistance.
Used for mounting printed circuit boards, terminal blocks, and grounding points in sensitive electronic equipment where non-magnetic, high-conductivity fasteners are essential.
Ideal for visible fastenings in doors, windows, and decorative panels, offering a warm copper finish and long-term resistance to tarnishing and atmospheric corrosion.
Specified for HVAC duct connections, lightning protection systems, and bonding conductors where reliable conductivity and ease of installation are required.

Copper C11000 (ETP) Screws Standards & International Certifications

Copper C11000 (ETP) Screws 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 912 DIN 913 DIN 914 DIN 915 DIN 916 ISO 4762 ASME B18.3 IS 1367
Certifications
ISO 9001:2015RoHS CompliantNABL LabPED 2014/68/EUMTC 3.1 / 3.2

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

Partner with RealBolt — India’s leading manufacturer of certified Copper C11000 (ETP) Screws — 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) Screws — Frequently Asked Questions

Browse expert answers to common questions about Copper C11000 (ETP) Screws 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) screws selection and pricing.
Copper C11000 (ETP) screws are available to DIN 963 (slotted countersunk), DIN 965 (cross recessed), ISO 7046, and ASME B18.6.3 (inch machine screws). Custom thread forms such as UNC, UNF, and BSW can be supplied on request. All screws are manufactured from ASTM B187 or ASTM F468 certified bar stock.
Yes – Copper C11000 screws are specifically designed for electrical busbar and switchgear connections, offering conductivity of at least 101% IACS. For optimal performance, ensure clean mating surfaces and full thread engagement. Tin-plated options are available for enhanced corrosion resistance.
Copper C11000 screws provide excellent resistance to atmospheric and industrial corrosion, making them suitable for outdoor, architectural, and marine environments. For aggressive marine atmospheres, consider tin or nickel-plated copper screws for additional protection.
No formal MOQ for standard metric and inch sizes held ex-stock – we supply from single pieces for urgent requirements. Custom sizes or finishes may require a minimum order of 5 kg. Quantity price breaks are available at 100 pcs, 500 pcs, and 1000 pcs.

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