Flange Bolts

Stainless steel flange bolt manufacturers in India

Product Dimensions

Parameter	Specification
Product Type	Flange Bolt
Head Type	Hex Head with Integrated Flange
Size Range	M6 – M24 (custom sizes available)
Material Options	Stainless Steel, Carbon Steel, Alloy Steel, Mild Steel
Standards	DIN 6921, ISO, BS, ASTM
Surface Finish	Zinc Plated, Hot-dip Galvanized, Phosphate Coated, Black Oxide

Industrial Applications

Electrical Panels and Assemblies: Stainless steel flange bolts provide firm fastening with fewer components by eliminating extra washers.
Automotive Industry: High-strength flange bolts are commonly used in engines, transmissions, and chassis assemblies for vibration-resistant fastening.
Construction and Heavy Machinery: Heavy-duty stainless steel bolts secure structural and mechanical components in demanding applications.
Agricultural Equipment: Offers high clamping strength for machinery exposed to outdoor conditions.
Oil, Gas, and Power Sectors: Used in high-pressure and vibration-prone environments for stable connections.

Product Description

As a trusted precision flange bolts manufacturer, we produce flange bolts designed with a hexagonal head and a circular flange beneath, which distributes the fastening pressure over a larger surface. These industrial fastening bolts enhance load distribution, stop loosening in vibrating applications, and save time in assembly due to the absence of additional washers. There are serrated and non-serrated flange bolts, the serrated type for extra locking power and the non-serrated for smooth load distribution. Due to their strength and reliability, flange bolts are widely used in automotive, construction, and heavy equipment industries.

Product specifications

Head Design: Hex head with integrated flange
Types: Serrated flange bolts (anti-loosening) and non-serrated flange bolts (smooth load distribution)
Thread Type: Metric ISO coarse/fine; UNC/UNF available on request
Size Range: M6 – M24; lengths from 15 mm up to 200 mm (custom available)
Material Options: Stainless steel (304/316), carbon steel, mild steel, alloy steel (grade 8.8, 10.9, 12.9)
Surface Finish: Zinc plating, hot-dip galvanization, phosphate coating, black oxide, plain finish
Flange Diameter: Proportional to bolt size; typically 1.5–2 times nominal diameter
Tensile Strength: Up to 1,200 MPa depending on grade
Shear Strength: ~60% of tensile rating (material dependent)
Locking Mechanism: Serrated flange bites into material to prevent loosening under vibration
Operating Temperature: -50°C to +400°C depending on base material and finish
Corrosion Resistance: Excellent with stainless steel and galvanization for outdoor/harsh environments
Applications: Automotive fasteners, heavy machinery, construction frameworks, engines, and industrial assemblies
Standards/Compliance: DIN 6921, ISO 4162, BS, ASTM specifications
RoHS/REACH Compliance: Available for coatings and stainless variants