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Copper C10100 (OFE) Screws Manufacturer & Exporter in India

Explore Copper C10100 (OFE) 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 C10100 (OFE) Screws?

Copper C10100 (OFE) screws are precision fasteners manufactured from Oxygen-Free Electronic (OFE) copper, designated as UNS C10100. This grade is renowned for its exceptional electrical and thermal conductivity, as well as its high purity (minimum 99.99% Cu). OFE copper screws are non-magnetic, ductile, and exhibit excellent resistance to hydrogen embrittlement, making them ideal for critical electrical, vacuum, and cryogenic applications.

Produced in accordance with ASTM B187 and ASTM F68, Copper C10100 screws are widely specified for use in high-vacuum systems, semiconductor manufacturing, and sensitive electronic assemblies where absolute material purity and conductivity are essential.

Quick Specifications

MaterialCopper C10100 (OFE)
UNS NumberC10100
DIN Number2.0040
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 Strength220 MPa (32 ksi) min
Yield Strength69 MPa (10 ksi) min
Hardness45 HV max
? All material certified by NABL-accredited laboratory. Conductivity and purity test reports available on request.

Complete the Fastener Set

Other Copper C10100 (OFE) Fastener Products Available from RealBolt

RealBolt also manufactures the complete Copper C10100 (OFE) fastener range from certified copper alloy bar stock, including Copper C10100 (OFE) Bolts, Copper C10100 (OFE) Nuts, Copper C10100 (OFE) Washers, Copper C10100 (OFE) Studs, and Copper C10100 (OFE) Threaded Rods. All Copper C10100 (OFE) fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Copper C10100 (OFE) Bolts
Copper C10100 (OFE) Nuts
Copper C10100 (OFE) Washers
Copper C10100 (OFE) Studs
Copper C10100 (OFE) Threaded Rods

Technical Data

Copper C10100 (OFE) Screws Dimensions, Sizes & Thread Standards

Copper C10100 (OFE) 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 and thread forms available. Metric and inch sizes supplied. All Copper C10100 (OFE) 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)Slot Width (mm)Min L (mm)Max L (mm)
M20.44.01.20.6430
M30.56.01.650.8640
M40.78.02.21.0850
M50.810.02.51.21060
M61.012.03.01.61280
M81.2516.04.02.016100
M101.520.05.02.520120
M121.7524.06.03.024150
M162.032.08.04.032200
M202.540.010.05.040250
M243.048.012.06.048300

Dimensional & Material Standards

StandardCoversThread
DIN 963Slotted countersunk screwsMetric
DIN 965Cross recessed countersunk screwsMetric
ISO 7046Countersunk head screwsMetric
ASME B18.6.3Machine screwsUNC/UNF
DIN 84Slotted cheese head screwsMetric
ISO 1207Cheese head screwsMetric
Material StandardRequirement
ASTM B187Bar/rod - UNS C10100
ASTM F68Fastener mechanical
EN 13601Copper rod for electrical purposes
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Copper C10100 (OFE) Chemical Composition

Copper C10100 (OFE) 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)99.99% min
Oxygen (O)0.0005% max
Silver (Ag)0.002% max
Other Elements (total)0.001% max
? All heats verified by NABL-accredited spectrometry. Purity and oxygen content certified on MTC.

Why Copper C10100 (OFE) Alloy Composition Matters for Screws

Ultra-High Purity (99.99% Cu)
Ensures maximum electrical and thermal conductivity, making C10100 screws the first choice for high-current busbar connections, vacuum chambers, and RF/microwave assemblies.
Oxygen-Free (OFE) — No Hydrogen Embrittlement
The extremely low oxygen content prevents embrittlement and outgassing, critical for UHV, semiconductor, and cryogenic environments where material stability is essential.
Non-Magnetic & Non-Sparking
C10100 screws are non-magnetic and non-sparking, making them ideal for sensitive instrumentation, MRI, and explosive atmospheres.

Fastener Performance

Copper C10100 (OFE) Screws Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Copper C10100 (OFE) Screws per ASTM. Copper C10100 (OFE) 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)
M30.50.40.7
M41.21.01.2
M52.52.02.0
M64.53.63.0
M81195.0
M1022188.0
M12383012.0
?? Soft Material: Use low torque and avoid over-tightening. Lubricated values assume K=0.18. For electrical connections, ensure full contact area for optimal conductivity.

Industry Applications

Copper C10100 (OFE) Screws Applications — Industries & End Uses

Copper C10100 (OFE) 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.
C10100 screws are the preferred choice for high-current busbar joints, switchgear, and transformer connections where maximum conductivity and zero magnetic interference are required.
OFE copper screws are specified for UHV chambers, semiconductor process tools, and ion implanters due to their ultra-low outgassing and hydrogen embrittlement resistance.
Used in superconducting magnet assemblies, cryostats, and particle accelerator beamlines where non-magnetic, high-purity fasteners are essential for performance and safety.
Non-magnetic C10100 screws are used in MRI, NMR, and sensitive medical imaging devices to prevent interference and ensure patient safety.

Copper C10100 (OFE) Screws Standards & International Certifications

Copper C10100 (OFE) 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 C10100 (OFE) Screws from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Copper C10100 (OFE) 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
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Answers for Buyers

Copper C10100 (OFE) Screws — Frequently Asked Questions

Browse expert answers to common questions about Copper C10100 (OFE) 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 C10100 (OFE) screws selection and pricing.
Copper C10100 (OFE) screws are available to DIN 963 (slotted countersunk), DIN 965 (cross recessed), ISO 7046, DIN 84 (cheese head), ISO 1207, and ASME B18.6.3 (inch machine screws). Custom thread forms (UNC, UNF, BSW) and special head types can be supplied on request with short lead times.
Yes – OFE copper screws are specified for UHV and cleanroom use due to their ultra-low outgassing, high purity, and resistance to hydrogen embrittlement. All fasteners are degreased and vacuum-packed on request for semiconductor and scientific applications.
Absolutely. With 101% IACS conductivity and non-magnetic properties, C10100 screws are ideal for busbars, switchgear, and transformer terminals. For best results, use with matching copper washers and ensure full contact area.
No formal MOQ for standard metric and inch sizes – we supply from single pieces for R&D and maintenance. Custom sizes or special finishes may require a 5 kg minimum. Quantity discounts apply at 100, 500, and 1000 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