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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

Bolts

Nuts

Industrial Fastener Bolts

AK Steel (India) is a premier manufacturer and stockist of heavy-duty Industrial Bolts, engineered to deliver exceptional tensile strength and reliability for critical infrastructure projects. We specialize in a wide variety of bolt types, including Hex Head Bolts, Stud Bolts, Allen Cap Screws, and Anchor Bolts. Our inventory spans across premium materials such as Stainless Steel (AISI 304, 316, 310, 904L), High Tensile Alloy Steel (Gr. B7, B16), and Carbon Steel (Gr. 8.8, 10.9), ensuring we have the right solution for high-temperature, high-pressure, and corrosive environments.

Quality is the cornerstone of our manufacturing process. All our bolts are produced in compliance with global standards like ASTM, ASME, DIN, and ISO. As an ISO 9001:2015 certified company, we subject our fasteners to rigorous destructive and non-destructive testing, including tensile testing, hardness testing, and impact analysis. Whether you require fully threaded stud bolts for petrochemical flanges or precision Allen bolts for machinery, AK Steel (India) guarantees on-time delivery with complete documentation, including EN 10204 3.1 Material Test Certificates.

  • Materials: SS 304/316, Alloy Steel B7/B16, Duplex & Inconel.
  • Standards: ASTM A193, DIN 931/933, ISO 4014, & ASME B18.2.1.
  • Types: Hex Bolt, Allen Bolt, Stud Bolt, U-Bolt, Eye Bolt, Carriage Bolt.
  • Coatings: PTFE/Xylan, Zinc Flake, Cadmium, & Hot Dip Galvanized.
  • Quality: 100% PMI Tested with Mill Test Certificates (MTC).
  • Size Range: M3 to M100 (Custom lengths up to 3 meters).

Specification table of Bolts

Product Name
Hex Head Bolt, Socket Head Cap Screw (Allen), Stud Bolt, U-Bolt, Anchor Bolt, Carriage Bolt
Stainless Steel
Grades: AISI 304, 304L, 316, 316L, 310S, 317L, 321, 347, 904L
Standard ASTM A193 Gr. B8, B8M, B8T, B8C (Class 1 & 2)
Alloy Steel
High Temp / High Pressure: ASTM A193 Gr. B7, B7M, B16
Low Temp: ASTM A320 Gr. L7, L7M
Carbon Steel
Structural Grades: Grade 4.6, 5.6, 8.8, 10.9, 12.9 (High Tensile)
Standard: ASTM A307 Gr. A & B
Duplex & Exotic
Duplex 2205 (UNS S31803), Super Duplex 2507, Inconel 625, Monel 400, Hastelloy C276, Titanium Gr. 2
Size Range
Dia: M3 to M100 (1/8" to 4")  |  Length: Up to 3000 mm
Standards
DIN 931 (Half Thread), DIN 933 (Full Thread), DIN 912 (Allen), ISO 4014, ASME B18.2.1
Threads
UNC, UNF, Metric Coarse, Metric Fine, BSW, Acme (Trapezoidal)
Finish / Coating
Black Oxide, Zinc Plated, Hot Dip Galvanized (HDG), PTFE/Xylan (Blue/Green), Cadmium, Geomet
Hex Head Bolts

Hex Head Bolts

The industry standard for construction and machinery. Available in Full Thread (DIN 933) and Half Thread (DIN 931) with high tensile strength.

StandardDIN / ISO
Grades8.8 / 10.9
FitPrecision
Stud Bolts

Stud Bolts

Fully threaded rods designed for high-pressure flange connections in piping systems. Essential for Oil & Gas and Petrochemical sectors.

High TempASTM A193
TypeFull Thread
FinishTeflon/Zinc
Socket Head Cap Screws

Socket Head Cap

High-strength Allen bolts designed for confined spaces where wrench access is limited. Widely used in heavy machinery and automotive.

DriveInternal Hex
DesignCompact
SpecDIN 912
U-Bolts & Anchors

U-Bolts

Structural fasteners for pipe support and concrete foundation. Custom bent to exact pipe diameter specifications for secure grip.

UseFoundation
GripVibration
MaterialCarbon/SS