DIN601 Class C Hexagon Bolt Specifications
Parameter | Details |
Product Name | DIN601 Class C Hexagon Head Bolt, Part Thread Coarse Thread Bolt |
Standard | DIN601-1987 German Industrial Standard |
Structure | Standard Hex Head, Part Thread Design, Long Smooth Shank, Class C Tolerance |
Grade | Carbon Steel: Grade 4.8, Grade 8.8 |
Surface Finish | Black Oxide, Zinc Plated, Hot Dip Galvanized |
Size Range | M5-M52 Full Sizes In Stock, Custom Non-standard Length Available |
Core Function | Steel Structure Splicing, Guardrail Fastening, Mechanical Frame Fixing, Bracket Assembly |
Application | Construction Engineering, Road Safety Project, General Machinery, Pipe Support, Agricultural Equipment |
Inspection | Dimensional Inspection, Thread Gauge Test, Hardness Test & Appearance Full Inspection |
Package | Neutral Bag + Export Carton & Pallet, OEM Custom Packaging |
Lead Time | 3-7 Days for Stock Sizes, 15-20 Days for Custom & Hot Dip Galvanized Products |
Product Core Advantages
Cost-effective Engineering Grade Tolerance
DIN601 adopts Class C engineering tolerance, with significant cost advantages compared with high-precision A/B grade bolts. It fully meets the medium-load fastening requirements of steel structures and outdoor projects, being the preferred bolt for mass engineering procurement.
Part Thread Design for Thick Plate Clamping
The long smooth shank structure is specially designed for thick plates and multi-layer steel structure assembly. It ensures uniform clamping force, avoids thread deformation, and greatly improves the stability of engineering assembly.
Full Large Size Coverage
Complete sizes from M5 to M52, with sufficient stock for large specifications such as M20, M24, M30 and M36. Standard metric coarse thread ensures strong universality and interchangeability with global standard fasteners.
Multi-finish for All Scenarios
Multiple surface treatments including black oxide, zinc plating and hot dip galvanizing cover indoor general assembly and outdoor weather-resistant engineering scenarios, meeting diverse anti-corrosion and fastening demands.
Grade Selection Guide
Grade 4.8 Black Oxide Bolt (Economical Type)
Cost-effective conventional grade with black anti-rust treatment, suitable for indoor steel structures, general machinery and temporary engineering assembly.
Grade 4.8/8.8 Zinc Plated Bolt (Indoor Anti-rust Type)
With electro-galvanized finish for basic moisture and rust resistance, ideal for electromechanical equipment, cabinet brackets and light steel structure assembly.
Hot Dip Galvanized Bolt (Outdoor Weather-resistant Type)
Thick galvanized layer provides excellent outdoor anti-oxidation and anti-corrosion performance, specially used for guardrail projects, outdoor steel structures and construction machinery.
Grade 8.8 High-strength Bolt (Heavy-duty Type)
Through quenching and tempering heat treatment, it has high tensile strength, suitable for heavy-load steel structure splicing and large equipment frame fixing.
DIN601 vs DIN931 Difference
DIN601 Class C Bolt: Class C engineering tolerance, part thread structure, cost-effective for mass general engineering assembly, widely used in construction, guardrail and ordinary mechanical equipment.
DIN931 A/B Grade Bolt: High-precision tolerance, exquisite workmanship, designed for precision machinery and high-load precision connection with higher cost, not suitable for general mass engineering procurement.
Production Process
High-quality Raw Material Selection: Adopt qualified carbon steel bars to ensure stable hardness and mechanical properties.
Automatic Cold Heading Forming: Integrated forming with dense structure, no cracks or defects for stable overall performance.
Precision Thread Rolling: Standard 6G thread with full gauge inspection to ensure smooth assembly and tight meshing.
Head Finishing: Chamfering and flat processing for tight fitting and uniform stress.
Custom Anti-corrosion Treatment: Multiple surface processes for indoor and outdoor environmental adaptation.
Strict Batch Quality Inspection: Sampling inspection of size, thread, hardness and appearance to guarantee stable batch quality.
Application Industries
Steel Structure Engineering: Factory steel frame, light steel structure and bracket fastening.
Road & Guardrail Project: Highway guardrail, isolation fence and municipal safety facility assembly.
General Machinery: Machine tool base, automation equipment and support frame fixing.
Pipe & Curtain Wall Engineering: Pipe bracket and light curtain wall support assembly.
Construction Machinery: Engineering machinery shell and auxiliary structure fastening.
Agricultural & Transport Equipment: Farm machinery and light transport vehicle frame assembly.
Why Choose Our DIN601 Bolts
We specialize in the mass production of DIN601 Class C hexagon head part thread bolts. Covering Grade 4.8/8.8 carbon steel, zinc plated and hot-dip galvanized finishes, all products comply strictly with DIN601 standards with accurate size and stable load-bearing performance. Suitable for steel structure engineering and general mechanical assembly, our products are well-received by global engineering buyers for sufficient large-size stock and reliable batch quality. Custom processing supports one-stop industrial fastening solutions.
For high-precision DIN601 class C hexagon bolts, hot dip galvanized structural bolts and high-strength engineering bolts, please feel free to contact us for professional technical support and exact quotation.
