- Description
- Features
- Specifications
Hex Head Flange Bolts – Precision Fastening Solutions by G-Fast
G-Fast’s hex head flange bolts combine a hexagonal drive head with an integrated washer-like flange, eliminating the need for separate washers. Engineered for secure, vibration-resistant fastening, they deliver exceptional reliability in automotive, industrial, and construction applications. The integral flange base expands the bearing surface beneath the bolt head, distributing clamping forces more evenly than standard hex bolts. This design prevents surface damage, minimizes material deformation, and maintains joint integrity under vibration, heat cycling, and dynamic loads. Available in smooth or serrated flange designs, these bolts meet diverse assembly needs. Smooth flanges maximize contact area for general use, while serrated flanges feature interlocking teeth that prevent loosening in high-vibration environments.Why G-Fast?
With decades of expertise, G-Fast delivers high-performance flange bolts engineered for strength, precision, and longevity. Each product meets international standards with full traceability and quality assurance ensuring fastening reliability in every critical application.- All-in-One Design: Combines bolt and washer, simplifying assembly and inventory.
- Optimized Load Transfer: Larger flange area protects surfaces and maintains clamping force.
- Reduced Installation Time: Eliminates washer handling for faster production.
- Anti-Loosening Strength: Serrated options resist vibration and thermal movement.
- Durable Protection: Advanced coatings guard against corrosion, chemicals, and weather.
- Precision Manufacturing: CNC processes ensure dimensional accuracy and consistent torque performance.
- Versatile Use: Ideal for engines, chassis, structural frameworks, enclosures, and power systems.
- Custom Options: Tailored geometries, coatings, and materials available upon request.
- Materials: Carbon steel, stainless steel (304, 316, 410), alloy steel, and specialty grades for extreme conditions.
- Standards: DIN 6921, ISO 4162, ASME B18.2.3.9M, EN 1665, JIS B1189.
- Threads: Metric (M6–M24), Unified (¼"–1¼"), coarse or fine.
- Dimensions: Metric M5–M24; Imperial ¼"–1"; lengths 10–200 mm; flange diameter 2–2.5× bolt size.
- Coatings: Zinc (clear, yellow, black), galvanizing, Geomet/Dacromet, phosphate + oil, or stainless passivation.
- Mechanical Classes: 4.6–12.9 (metric); SAE Grades 2–8.