Prime Steel Corporation

Inside Diameter	4 mm
Inner Diameter	4 mm
Outer Diameter	6 mm
Thickness	2.5 mm
Usage	Industrial
Material	Stainless Steel
Color	Silver

tainless Steel Bolt, Nut, and Washer sets are widely used for strong, corrosion-resistant, and long-lasting fastening in industrial, commercial, and structural applications. Manufactured using premium grades like SS 304, SS 316, and SS 202, these fasteners are ideal for environments exposed to moisture, chemicals, and extreme temperatures.

Each set includes:

• SS Bolt – for high tensile strength and secure fastening

• SS Nut – precisely threaded for tight locking

• SS Washer – distributes load and prevents damage to surfaces

These fasteners are known for their durability, resistance to rust and wear, and smooth finish, making them suitable for construction, machinery, marine, food-grade, and chemical equipment.

Specifications:

• Grades: SS 304 (general purpose), SS 316 (marine/chemical), SS 202 (economic)

• Bolt Types: Hex Head, Allen Head, Carriage, CSK, etc.

• Nut Types: Hex Nut, Nylock Nut, Dome Nut, Wing Nut

• Washer Types: Plain Washer, Spring Washer, Taper Washer

• Size Range: M3 to M64 or custom

• Finish: Bright, matte, or polished

• Standards: IS, DIN, ASTM, ISO

Inner Diameter	4 mm
Outer Diameter	10 mm
Thickness	1 mm
Usage	Industrial
Material	Copper
Shape	Round

Flat copper washers are precision-cut components designed to provide leak-proof sealing, pressure distribution, and electrical conductivity in mechanical and electrical assemblies. Made from 99.9% pure copper, these washers offer excellent thermal and electrical conductivity, along with natural corrosion resistance and malleability.

They are ideal for hydraulic fittings, electrical terminals, automotive fuel systems, refrigeration units, and any application where a soft, conductive, and corrosion-resistant washer is required. Their flat shape helps evenly distribute load and reduce stress on the fastening surface.

Specifications:

• Material: Pure Copper (≥99.9%)

• Type: Flat / Plain Washer

• Sizes: M3 to M64 (custom dimensions available)

• Thickness: 0.5 mm to 5 mm

• Standards: DIN 7603 / IS / ASTM B152

• Finish: Natural / Bright Annealed / Hard Temper

Outer Diameter	5 mm
Thickness	5 mm
Material	Stainless Steel
Color	Silver
Finishing	Polished
Inner Diameter	2 mm

SS Flat Washers are thin, flat, circular metal discs with a central hole designed to evenly distribute the load of a threaded fastener such as a bolt or nut. Made from high-quality stainless steel grades like SS 304, SS 316, and SS 316L, these washers provide excellent corrosion resistance, strength, and durability, making them ideal for use in harsh environments and critical applications.

Specifications:

• Material Grades: SS 304 / SS 316 / SS 316L

• Sizes: Available in a wide range of inner diameters and thicknesses as per standards

• Standards: DIN 125, ASTM F844, ISO 7089/7090

• Finish: Plain, polished, or custom finishes available

Inner Diameter	4 mm
Outer Diameter	9 mm
Thickness	2 mm
Usage	Industrial
Material	Mild Steel
Brand	Prime Steel

MS (Mild Steel) Washers are flat, circular components used to distribute the load of threaded fasteners such as bolts, screws, or nuts. Designed to prevent surface damage and improve joint stability, these washers are essential in mechanical, structural, automotive, and general fabrication work.

Manufactured from IS 2062-grade mild steel, these washers are known for their strength, ease of use, and cost-effectiveness. Available in various diameters, thicknesses, and finishes, MS washers offer dependable performance in light to medium-duty applications.

Specifications:

• Material: Mild Steel (IS 2062 or equivalent)

• Size Range: M3 to M64 (custom sizes available)

• Thickness: 0.5 mm to 6 mm

• Types: Plain Washer, Spring Washer, Heavy-Duty Washer, Taper Washer

• Finish Options: Self-Color, Zinc Plated, Hot Dip Galvanized, Black Oxide

• Standards: IS 2016 / DIN 125 / ISO 7089

Packaging Type	Packet, Carton, Jute Bag
Usage/Application	Oil & Gas Industry

We offer a high-quality range of Stainless Steel Washers, designed to provide reliable spacing, load distribution, and secure fastening in a variety of industrial and mechanical applications. Widely used in automotive, construction, manufacturing, and machinery sectors, these washers ensure long-lasting performance even in harsh environments.
Manufactured from premium stainless steel grades such as SS 304, 316, and 310, our washers are precision-cut for consistent thickness and diameter, ensuring a perfect fit with bolts and nuts. Available in different types including flat washers, spring washers, lock washers, and custom designs, they meet international standards like DIN, ISO, and ANSI.

Key Features

•  Corrosion & Rust Resistant – Ideal for outdoor and corrosive environments
  
  
•  High Strength & Durability – Maintains integrity under heavy load and vibration
  
  
•  Wide Variety of Types – Flat, spring, lock, and custom washers available
  
  
•  Precision Dimensions – Ensures perfect fit and even load distribution
  
  
•  Standard Compliance – Manufactured as per DIN, ISO, ANSI, and other global norms

Inner Diameter	4 mm
Outer Diameter	6 mm
Thickness	1 mm
Usage	Industrial
Material	Mild Steel
Shape	Round

Industrial MS (Mild Steel) Washers are high-strength flat washers designed for robust load distribution, structural stability, and vibration resistance in demanding industrial environments. These washers are manufactured from high-quality mild steel (IS 2062 or equivalent) and are engineered to withstand high mechanical loads, making them ideal for construction, machinery, heavy fabrication, and plant maintenance.

With precise dimensions and a variety of coating options (zinc plated, hot-dip galvanized, black oxide), industrial MS washers provide reliable performance in both indoor and outdoor applications.

Specifications:

• Material: Mild Steel (IS 2062 / EN Series)

• Size Range: M6 to M100 or custom sizes

• Outer Diameter: As per DIN 125 / IS 2016 / ISO 7089

• Thickness: 1 mm to 10 mm

• Finishes Available: Self-Color, Zinc Plated, Hot Dip Galvanized, Black Oxide

• Type: Plain Washer, Heavy-Duty Washer, Taper Washer, Spring Washer

SS Grade	SS 304
Washer Standard	DIN 125
Inner Diameter	4 mm
Material	SS
Surface Finish	Zinc Plated
Outer Diameter	Up to 10 mm
Material Grade	SS316
Thickness	1–2 mm
Finish	Bright
Shape	Round
Color	Silver
Application	Chemical Plant
Magnetic Property	As Per Grade
Usage/Application	Construction

Stainless steel washers are flat, disc-shaped components used with bolts, nuts, or screws to distribute load, prevent loosening, and protect surfaces during fastening. Made from high-grade stainless steel such as SS 304, SS 316, and SS 202, these washers offer excellent corrosion resistance, high strength, and long-lasting durability in harsh environments.

SS washers are commonly used in automotive, construction, marine, electrical, and general engineering applications where strength and resistance to rust are essential.

Specifications:

• Material Grades: SS 304, SS 316, SS 202 (others on request)

• Types: Plain Washer, Spring Washer, Lock Washer, Flat Washer, Star Washer

• Size Range: M3 to M64 or as per requirement

• Thickness: 0.5 mm to 6 mm

• Standards: IS, DIN, ASTM, ISO

• Finish: Bright, Matte, Polished

Inner Diameter	4 mm
Outer Diameter	9 mm
Thickness	2.5 mm
Usage	Industrial
Material	Mild Steel
Shape	Round

Round MS (Mild Steel) Washers are flat, circular components used to evenly distribute the load of threaded fasteners such as bolts, nuts, and screws. These washers help prevent damage to surfaces, reduce the risk of bolt loosening under vibration, and enhance joint stability.

Manufactured using high-quality mild steel, these washers offer good mechanical strength, are cost-effective, and suitable for a wide range of general-purpose applications in construction, machinery, automotive, and fabrication work.

Specifications:

• Material: Mild Steel (IS 2062 or equivalent)

• Outer Diameter: As per DIN / IS standard or custom

• Thickness: 0.5 mm to 6 mm

• Size Range: M3 to M64 (or custom sizes available)

• Finish Options: Zinc Plated, Hot Dip Galvanized, Black Oxide, Self-Color

• Standards: IS 2016, DIN 125, ISO 7089

Inside Diameter	4 mm
Outer Diameter	9 mm
Thickness	1 mm
Usage	Industrial
Material	Stainless Steel
Shape	Round

SS 304 Washers are flat, precision-engineered components used to distribute load, prevent surface damage, and enhance fastening reliability in a wide range of applications. Manufactured from AISI 304 grade stainless steel, these washers offer excellent corrosion resistance, good mechanical strength, and non-magnetic properties, making them suitable for both indoor and outdoor environments.

SS 304 is one of the most widely used austenitic stainless steels, known for its durability and performance in moisture-prone and chemically aggressive environments.

Specifications:

• Material: Stainless Steel 304 (AISI 304)

• Types Available: Plain Washer, Spring Washer, Lock Washer, Taper Washer

• Size Range: M3 to M64 or as per requirement

• Thickness: 0.5 mm to 6 mm

• Finish: Bright / Matte / Polished

• Standards: DIN 125 / IS 2016 / ISO 7089 / Custom specs

Inner Diameter	4 mm
Outer Diameter	6 mm
Thickness	2 mm
Material	Brass
Type	Washer
Shape	Round

Brass washers are flat, circular components used to distribute the load of threaded fasteners such as bolts, nuts, or screws. Manufactured from high-quality brass alloy, they are known for their excellent corrosion resistance, good electrical conductivity, and non-magnetic properties.

These washers are commonly used in electrical assemblies, marine hardware, plumbing systems, and decorative fittings, where both performance and aesthetics are important. Brass washers also reduce surface damage and offer a longer lifespan in moist or chemically exposed environments.

Specifications:

• Material: Brass (IS 319 / CuZn37 / CW508L or equivalent)

• Type: Plain / Flat / Round Washer

• Size Range: M3 to M64

• Thickness: 0.5 mm to 6 mm

• Finish: Natural, Polished, Nickel-Plated

• Standards: DIN 125 / IS 2016 / ISO 7089

Inner Diameter	8 mm
Outer Diameter	9 mm
Thickness	2 mm
Material	Brass
Type	Washer
Shape	Round

Flat brass washers are precision-machined components used to distribute the load of threaded fasteners such as screws, bolts, and nuts. Manufactured from high-quality brass alloy, these washers offer excellent corrosion resistance, electrical conductivity, and aesthetic appeal, making them ideal for electrical, plumbing, marine, decorative, and instrumentation applications.

Brass washers are softer than steel, reducing the risk of surface damage while ensuring a tight and durable joint.

Specifications:

• Material: Brass (IS 319 / CuZn37 / CW508L or equivalent)

• Type: Flat / Plain Washer

• Size Range: M3 to M64 (custom sizes available)

• Thickness: 0.5 mm to 6 mm

• Finish: Natural Brass / Polished / Nickel-Plated

• Standard: DIN 125 / IS 2016 / ISO 7089

Shape	Round
Material	Stainless Steel
Brand	Prime Steel
Inner Diameter	4 mm
Outer Diameter	6 mm
Thickness	0.8 mm

Stainless Steel Flat Washers are essential components used in fastening systems to provide a smooth, even bearing surface under bolts, screws, or nuts. Their primary function is to distribute load evenly, prevent damage to connected surfaces, and enhance joint stability. These washers are especially useful in applications where vibration or pressure could loosen fasteners or damage the material underneath.

Manufactured from durable stainless steel grades such as SS 304, SS 316, and SS 202, these washers are corrosion-resistant, non-magnetic (in austenitic grades), and suitable for indoor and outdoor environments, including those with exposure to moisture, chemicals, or temperature variations.

Specifications:

• Material Grades: SS 304 (general use), SS 316 (marine/chemical), SS 202 (cost-effective option)

• Size Range: M3 to M64 or as per requirement

• Outer Diameter: Standard and custom OD available

• Thickness: 0.5 mm to 6 mm

• Standards: DIN 125, IS 2016, ISO 7089

• Finish: Bright, natural, or polished

Inner Diameter	3 mm
Outer Diameter	6 mm
Thickness	1.6 mm
Material	Stainless Steel
Type	Washer
Brand	Prime Steel

Stainless Steel Spring Washers are high-strength, corrosion-resistant washers designed to prevent loosening of fasteners under vibration, shock, and dynamic loads. These washers apply continuous tension on the fastener assembly, ensuring a firm grip and consistent pressure between mating surfaces.

Manufactured from premium grades such as SS 304, SS 316, and SS 202, these washers are ideal for use in automotive, marine, construction, machinery, and electrical applications where durability and reliability are essential.

Specifications:

• Material Grades: SS 304, SS 316, SS 202

• Type: Split Spring Washer / Helical Spring Washer

• Size Range: M3 to M64 (custom sizes available)

• Thickness: 1 mm to 6 mm

• Standards: IS 3063 / DIN 127 / ISO 8752

• Finish: Natural / Bright / Matte / Polished

Thickness	2 mm
Surface Finish	Polished
Color	Silver
Usage/Application	Industrial
Material	Stainless Steel
Shape	Round

Stainless Steel (SS) Plain Washers are flat, round components used to distribute the load of bolts, screws, and nuts evenly over a surface, preventing damage and improving the strength of the joint. Manufactured from high-quality stainless steel grades like SS 304, SS 316, and SS 202, these washers offer excellent corrosion resistance, strength, and durability even in harsh environments.

They are commonly used in automotive, construction, electrical, marine, and general engineering applications where long-term performance and reliability are essential.

Specifications:

• Material Grades: SS 304, SS 316, SS 202

• Size Range: M3 to M64 (custom sizes available)

• Thickness: 0.5 mm to 6 mm

• Finish: Bright / Matte / Natural

• Standards: IS 2016, DIN 125, ISO 7089

 

Material	Alloy Steel
Inner Diameter	4 mm
Outer Diameter	6 mm
Thickness	2 mm
Usage	Construction
Grade	8.8

High Tensile Plain Washers in Grade 8.8 are engineered to support heavy-duty bolted joints by evenly distributing the load under nuts or bolt heads. Manufactured from hardened alloy steel or medium carbon steel, these washers offer excellent strength, hardness, and dimensional stability, making them ideal for structural, automotive, and heavy engineering applications.

These washers are heat-treated to match the strength characteristics of high tensile bolts and nuts, especially in Grade 8.8 assemblies, ensuring joint integrity under vibration, torque, and dynamic loads.

Specifications:

• Material: Hardened Steel / Medium Carbon Steel

• Grade: 8.8

• Size Range: M6 to M64 (custom sizes available)

• Standards: IS 5369 / IS 2016 / DIN 125 / ISO 7089

• Finish Options: Black Oxide, Zinc Plated, Phosphated, Hot Dip Galvanized

• Hardness: 140–250 HV (varies by standard and size)

 

Material	Brass
Inner Diameter	3 mm
Outer Diameter	6 mm
Thickness	0.8 mm
Usage	Industrial
Shape	Round

High tensile spring washers are split-type, helical-shaped washers made from heat-treated high-strength steel, designed to prevent loosening of bolts and nuts under vibration and dynamic loading. Commonly paired with high tensile fasteners (Grades 8.8, 10.9, 12.9), these washers exert a continuous axial force on the joint, maintaining tension and ensuring a secure, vibration-resistant hold.

Engineered for performance in automotive, structural, heavy machinery, and industrial equipment, these washers are durable, fatigue-resistant, and easy to install.

Specifications:

• Material: High Tensile Steel / Alloy Steel

• Hardness: 44–55 HRC (typical)

• Size Range: M6 to M64

• Standards: IS 3063 / DIN 127 / ISO 8752

• Finish Options: Black Oxide, Zinc Plated, Phosphated, Hot Dip Galvanized