Button Head Bolts

Flange Button Head Screw

High-quality Flange Button Head Screw supplied by Valaki Enterprise, Nashik — ISO certified, bulk supply to Nashik, Pune & Mumbai.

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Flange Button Head Screw
Button Head Bolt

Flange Button Head Screw

The Flange Button Head Screw combines a low-profile button head with a wide integrated flange base that significantly increases the bearing surface area. This design eliminates the need for a separate washer while distributing clamping loads evenly across the mating surface, reducing the risk of surface damage or deformation.

Engineered for high-vibration environments, these screws are widely used in automotive assemblies, sheet metal fabrication, plastic panels, and light-structure brackets. Available in mild steel with zinc plating and stainless steel grades, offering excellent corrosion resistance across diverse application conditions.

Wide Flange Base M4 – M20 MS / SS304 Grade 8.8 / 10.9 Anti-Vibration

Technical Specifications

Complete material and dimensional specifications for Flange Button Head Screws

Parameter Details
MaterialMild Steel (Zinc Plated) / Stainless Steel SS304
Grade / ClassGrade 8.8 / 10.9
Size RangeM4 to M20
Length Range8mm to 100mm (Custom lengths available)
Head TypeButton Head with Wide Integrated Flange
Drive TypeInternal Hex (Allen / Socket Key)
Thread TypeMetric Coarse Thread (DIN 13)
Surface FinishZinc Plated / Plain (SS)
StandardISO 7380-2 / DIN 6921
Tensile Strength800 MPa (Grade 8.8) / 1040 MPa (Grade 10.9)
Yield Strength640 MPa (Grade 8.8 minimum)
Hardness22–34 HRC
Operating Temperature-20°C to +200°C
PackagingPoly Bags / Wooden Boxes / Custom (per requirement)

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