Custom CNC High Precision Stainless Steel Slotted Locating Pin with Anti-Loosening Design

Situo Hardware is a professional CNC manufacturer specializing in custom precision positioning hardware. We focus on producing Custom CNC Slotted Locating Pins and High Precision Slotted Dowel Pin Anti-Loosening Mechanical Hardware Fittings for industrial automation, tooling jigs, precision molds, and intelligent mechanical equipment.

Adopting high-quality solid stainless steel and carbon steel raw materials, all slotted dowel pins are integrally CNC turn-mill machined with precise grooved structures. Different from ordinary solid positioning pins, our slotted pins feature elastic expansion, anti-loosening and shockproof positioning functions, eliminating assembly gaps and vibration displacement effectively. With high precision, smooth surface and stable elasticity, they are ideal high-performance positioning fasteners for precision mechanical assembly and tooling positioning systems.

We adopt high-density industrial-grade solid raw materials including 304/316 stainless steel, 420 stainless steel and carbon steel. Multiple surface treatments such as passivation, blackening and polishing are available to enhance durability.

The precisely structured uniform slot design provides stable elastic expansion performance during assembly, enabling the pin to fit tightly with the positioning hole and eliminate assembly gaps. This structural design effectively solves common problems of traditional solid pins, including easy loosening, offset displacement and difficult disassembly.

All slotted locating pins are completed in one clamping CNC integral forming process. The stable machining tolerance reaches ±0.005mm with excellent pin straightness and slot symmetry. Consistent elastic tension and dimensional accuracy fully meet high-precision repeated positioning requirements.

The solid one-piece cutting structure avoids welding seams and stress concentration defects. Optimized through mechanical mechanics analysis, the slotted structure balances elastic flexibility and structural rigidity, effectively preventing fracture, deformation and elastic attenuation under long-term vibration.

We provide full non-standard customization of all slotted dowel pins, including single-sided slotted pins, double-sided slotted pins, multi-groove positioning pins, stepped slotted pins, and special-length thin/thick slotted pins. Custom slot depth, width, pin diameter and structural shape are available according to customer requirements.

All finished slotted locating pins undergo full-dimensional inspection, slot symmetry calibration, elastic tension testing and simulated assembly testing before delivery. The batch qualified rate exceeds 99%. Products feature excellent dimensional consistency, elastic uniformity and interchangeability.

• Anti-loosening slotted positioning pins for industrial automation transmission modules
• Precision elastic limit slotted dowels for tooling jigs and testing fixtures
• Shockproof anti-loosening locating pins for precision molds and machinery equipment
• Quick-disassembly micro-adjustment positioning hardware for intelligent equipment and assembly lines
• Custom slotted pins for high-precision positioning and anti-vibration mechanical mechanisms

Situo Hardware has complete independent production capacity for custom CNC slotted locating pins and precision positioning fasteners. We specialize in high-precision CNC machining of non-standard elastic anti-loosening hardware parts. We support 24-48 hours rapid prototyping, flexible batch orders and global export delivery. Material certificates, performance test reports and standard export packaging can be provided.

We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs. Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001.

Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment. We implement 8S management and have passed ISO9001 and TS16949 automotive certifications.