Ninthore Overseas is one of the Leading Manufacturer And Exporter of Alloy Steel B7M Washers, which are then tested on different quality parameters and marked with company logo. Alloy Steel B7M Flat Washers has some great features to offer such as High strength, Rugged design, Impact & heat resistance, Tough, Robust built, Dimensional accuracy, Ductility, Longevity, Highly durable, Corrosion resistance, Easy installation etc. Having client – centric association, we are betrothed in presenting a distinct collection of Alloy Steel Lock B7M Washers, which are processed by vendor’s qualified workers by using top – notch quality steel and contemporary techniques. 

Alloy Steel B7M Sealing Washers is used in a variety of industries and is highly effective, particularly in the oil, gas and petrochemical industry, where liquids and gases are often stored at higher temperatures. We supply an outstanding assortment of Alloy Steel B7M Split Washers, which are crafted using finest quality raw material at our end. Our most esteemed clients can avail this range of Alloy Steel B7M Slot Washers in different sizes, and shapes in order to match up with their specific requirements. 

Alloy Steel B7M Washers | Alloy Steel B7M Washers | Alloy Steel B7M Washers | Alloy Steel B7M Washers | Alloy Steel B7M Washers | Alloy Steel B7M Washers | Alloy Steel B7M Washers | Alloy Steel B7M Washers

Alloy Steel B7M Machine Washers are available for high end industrial requirements, which are designed with utmost precision and fabricated from industry grade materials. Demanded in the global industrial sectors, Alloy Steel B7M Star Washers can be customized as per the needs. We specialize in manufacturing Custom Sized Alloy Steel B7M Spring Washers for bulk orders.

Alloy Steel B7M Washers Specifications
Specifications : ASTM A 193 ASME SA 193
Standard : IS, ASTM, BS and all International Standards
Length : 3 mm to 200 mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Type : Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring.

B7M Alloy Steel Washers Chemical Composition

Alloy Steel B7M C Mn P S Si Cr Mo
0.37-0.49 0.65-1.10 0.035 Max 0.04 Max 0.15-0.35 0.75-1.20 0.15-0.25

Mechanical Properties:

Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min
B7M Up to 2-1/2 125 105 16 50
2-5/8 – 4 115 95 16 50
4-1/8 – 7 100 75 18 50

Alloy Steel B7M Washers Application Industries

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

B7M Alloy Steel Washers Test Certificates

We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc.

Material Testing

We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.

• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test


• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)