Product Overview
Cheap Pin Shaft for Safety Locking – Model ZB7603 Series
RICHWITS ZB7603 delivers an industrial-grade, precision-machined pin shaft engineered for safety locking mechanisms, quick-release applications, and secure fastening in factory manufacturing environments.
Turned from high-quality carbon steel or 304 stainless steel, then precision-ground and surface-treated for optimal hardness, wear resistance, and corrosion protection in demanding production lines.
Classic cylindrical design with head and cotter hole: inserts through aligned bores, secures with cotter pin or R-clip—prevents unintended disassembly, ensures operator safety—essential for machinery guards, conveyor systems, and assembly jigs.
Multiple diameters (6 mm–30 mm) and lengths (20 mm–200 mm) accommodate standard industrial applications; cost-effective construction delivers reliable shear strength—perfect for automotive assembly, packaging machinery, agricultural equipment, or material handling systems.
Key Features & Benefits
Precision-Machined Body – tight dimensional tolerances (h6/h7), zero eccentricity, smooth surface finish ensures consistent fit in bores without binding or looseness. Hardened Bearing Surfaces – induction hardened or through-hardened to HRC 40-50; resists galling, extends service life in high-cycle applications. Precision-Drilled Cotter Hole – clean edges prevent cotter pin damage; proper chamfer eases pin insertion under field conditions. Optional Retaining Grooves – circlip grooves or snap-ring grooves available for axial retention without secondary fasteners. Corrosion-Resistant Options – plain oiled, zinc plated, or 304 SS for food-grade and washdown environments.
Product Uses
Pin shaft for machinery safety guards and interlock systems
Factory locking pin for conveyor line fixtures and pallets
Quick-release pin for assembly jigs and welding fixtures
Agricultural pin for tractor implements and hitch connections
Automotive pin for seat tracks, hinges, and suspension components
Material handling pin for rack systems, carts, and dollies
Construction pin for scaffolding, formwork, and shoring systems
Product Advantage
High resilience, unlikely to break – proper material selection and heat treatment withstands shear loads and impact without brittle failure.
Excellent processing performance – compatible with standard bores; easy installation and removal; reusable for maintenance cycles.
Excellent welding performance – 304 SS version offers superior weldability for permanent structural integration.
Excellent antioxidant properties – plated or stainless options resist rust; maintains smooth operation and safety function in humid factory environments.
FAQ
Why does stainless steel rust?
a. When dust containing other metal elements or particles of dissimilar metals accumulate on the surface of stainless steel, in a humid environment, the condensate water between the adherent and the stainless steel forms a micro-battery, triggering an electrochemical reaction and damaging the protective film. This is known as electrochemical corrosion.
b. When organic substances such as vegetable juice, noodle soup, and phlegm adhere to the surface of stainless steel, they form organic acids in the presence of water and oxygen. Over a long period of time, these organic acids will corrode the metal surface.
c. The stainless steel surface adheres to substances containing acids, alkalis and salts (such as splashed alkali water and lime water during wall decoration), causing local corrosion.
d. In polluted air (such as that containing large amounts of sulfides, carbon oxides, and nitrogen oxides), upon encountering condensation water, liquid spots of sulfuric acid, nitric acid, and acetic acid are formed, causing chemical corrosion.
