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  • Call Us for inquiry!
  • + (91) 98201 73071
  • + (91) 79778 57169
  • Address
  • Shop No. 186, Ground Floor, 182/184
    Patthe Bapurao Marg, Near Alfred
    Theater, Mumbai - 400004

Washers

Nuts

Industrial Washers

AK Steel (India) manufactures and stocks a wide range of high-quality Industrial Washers, essential components for distributing load, preventing damage to surfaces, and ensuring a secure, vibration-resistant assembly. Our inventory includes Plain Washers, Spring Lock Washers, Star Washers, and Taper Washers, all precision-engineered to meet international standards like DIN, ISO, ASTM, and ASME. We supply these in premium grades of Stainless Steel (304, 316, 310), Carbon Steel, and specialized alloys to suit diverse industrial applications ranging from heavy machinery to precision electronics.

Understanding that even the smallest component is critical to assembly integrity, our washers undergo stringent quality control. As an ISO 9001:2015 certified company, we ensure dimensional accuracy, flatness, and proper hardness for optimal performance. Whether you need High Tensile Structural Washers (F436) for construction or corrosion-resistant PTFE coated washers for marine use, AK Steel (India) provides certified products with complete traceability, including EN 10204 3.1 Material Test Certificates.

  • Materials: SS 304/316, Spring Steel, Carbon Steel, Copper, Brass.
  • Standards: DIN 125, DIN 127, ASTM F436, ISO 7089, & ASME B18.22.1.
  • Types: Flat/Plain, Spring Lock, Star (Tooth), Taper, Structural.
  • Coatings: Zinc Plated, Black Oxide, Hot Dip Galvanized, & Cadmium.
  • Quality: Hardness Tested & MTC Provided (3.1 Certificate).
  • Size Range: M3 to M100 (Custom thicknesses available).

Specification table of Washers

Product Name
Plain Washer (Flat), Spring Washer (Lock), Star Washer, Taper Washer, Structural Washer (F436), Disc Spring
Stainless Steel
Grades: AISI 304, 304L, 316, 316L, 310, 317L, 321, 347, 410, 904L
Spring Steel
High Carbon Spring Steel: En42J, En47 (For Spring Washers & Belleville Washers)
Hardness: 40-50 HRC (Typical for Lock Washers)
Carbon Steel
Mild Steel: ASTM A307, DIN 125
Hardened Structural: ASTM F436 (Through-hardened for structural bolts)
Non-Ferrous / Exotic
Copper, Brass, Phosphor Bronze, Aluminium, Inconel 625, Monel 400, Duplex 2205
Size Range
Metric: M3 to M100  |  Imperial: 1/8" to 4"
Standards
DIN 125 (Flat), DIN 127 (Spring), DIN 6797/6798 (Star), ASTM F436, ASME B18.21.1
Finish / Coating
Self Color, Zinc Plated (Blue/Yellow/Black), Hot Dip Galvanized (HDG), Nickel Plated, PTFE
Plain Washers

Plain Washers

Standard flat washers used to distribute load and prevent surface damage. Available in various thicknesses (DIN 125 A/B).

TypeFlat
ShapeRound
UseGeneral
Spring Washers

Spring Lock Washers

Split washers designed to prevent nuts from loosening due to vibration. Made from high-quality spring steel (DIN 127).

FunctionLocking
GradeSpring Steel
GripHigh
Star Washers

Star Washers

Serrated tooth washers (Internal/External) that dig into the mating surface for maximum vibration resistance and electrical contact.

TypeSerrated
AppElectrical
StdDIN 6798