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304/316 Stainless Steel Clevis Pin with Hole & Cotter Pin Flat Head Hitch Pin for Fastening Linkage & Mechanical Assembly

Name: Hole-mounted flat-head pins (Clevis pin / Plug pin / Cotter pin matching pin / Hitch pin)
Material: AISI 304/316 stainless steel (corrosion resistant, rust resistant), 5# steel / 40Cr alloy steel
Standards: GB/T 882, GB/T 91, ISO 2341, DIN 1443, DIN 1444
Grade: Stainless steel A2 (304) / A4 (316), Carbon steel 8.8 grade / 10.9 grade
Specifications: 3mm ~ 50mm (customizable)
Surface Treatment: Natural polishing / Passivation treatment (no coating, corrosion resistant), Electro-galvanizing / Hot-dip galvanizing / Blackening treatment (optional, enhances rust resistance and wear resistance)
Design Features: Perforated flat head structure, high-gloss shaft surface, corrosion-resistant stainless steel, various specifications, high tensile strength
Applications: Mechanical engineering, lifting equipment, automotive and trailer, industrial equipment, marine engineering
Delivery Time: 15-30 days after receiving advance payment
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable
Samples: Available
Packaging: Boxed/Bulk/Pallet or customized packaging
OEM: Available

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Key Features

Our clevis pins with hole and flat head (also known as clevis pin, hitch pin, or split pin pair pin) are manufactured from AISI 304/316 stainless steel or 45# / 40Cr alloy steel, with strength grades covering A2‑70 (304), A4‑80 (316) and carbon steel grades 8.8 / 10.9. The design features a flat head with a transverse hole, pin diameter from 3mm to 50mm, length customizable. Quick locking and removal is achieved by inserting a split pin or R‑pin. Compliant with GB/T 882, ISO 2341, DIN 1443 and other standards. Widely used in mechanical engineering, lifting equipment, trailers & automotive, industrial machinery, and marine applications. The 316 stainless steel variant offers excellent chloride corrosion resistance (salt spray ≥720h) for offshore and humid environments.

Easy installation: Insert the pin through the clevis or lug, then insert a split pin into the tail hole and spread the legs – no tools required for removal. The high surface finish reduces mating wear, and the flat head distributes load evenly.

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Precision Manufacturing Process

Our clevis pins are produced using high‑precision automatic lathes or multi‑station cold heading + finish turning. Raw material (stainless steel / 45# / 40Cr bars) is straightened, cut to length, then processed on CNC lathes to complete head forming, outer diameter turning, chamfering, and tail hole drilling in one setup. The drilling operation uses high‑speed carbide drills and precision fixtures to ensure hole perpendicularity tolerance ≤0.1mm and positional deviation ±0.15mm. The outer surface is ground to Ra 0.8μm for low friction.

Carbon steel grades 8.8/10.9 undergo mesh‑belt furnace heat treatment (quenching + high‑temperature tempering) to obtain a uniform tempered sorbite structure, achieving HRC 22‑32 (8.8) and HRC 32‑39 (10.9). Stainless steel versions receive vacuum solution treatment + passivation. Surface finishing: carbon steel parts can be electro‑galvanized (8‑12μm), hot‑dip galvanized (≥50μm), or black oxide; stainless steel parts are electropolished. Every batch is 100% go/no‑go gauge tested for outer diameter, and spot‑checked for smooth split‑pin insertion.

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Transparency & Customization

We practice full-process transparency: each batch of pins comes with a comprehensive testing report—including material spectral analysis, hardness value, salt spray test duration, rod diameter go/no-go gauge pass rate, and cotter pin hole position deviation diagram. The packaging QR code allows traceability to the raw material furnace number, cold heading machine, heat treatment curve, and operator. Our independent website features a "Process Transparency" page, displaying real-time videos of turning, drilling, and passivation processes, as well as raw shear force test data.

Customization capabilities: We support any mixed standard (e.g., head according to DIN 1443, tail hole according to ISO 2341); we accept non-standard head types, hole diameter offsets, rod slotting, and other requirements. Surface treatments are offered in "combination packages": such as blackening + rust-preventive oil for mining machinery, or passivation + partial silver plating for conductive connections.

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Quick-locking · Anti-loosening

Made of 304/316 stainless steel, A4 grade, salt spray resistance ≥720h. Features a perforated flat head design with cotter pins for tool-free installation and removal; high-gloss axle surface for wear resistance. Used in mechanical assembly, trailer connections, and marine spreaders. Customizable specifications available; robust and reliable.

product details

JGD Service

Manufacturing Process

• Multi Station Cold Heading Technology

• Intelligent Heat Treatment System

• Micron-Level Thread Rolling Process

• Fully Automatic Optical Sorting

• Environmentally Friendly Surface Treatment Line

• Metallographic And Mechanical Joint Laboratory

Quality Control System

• Raw Material Source Locking

• Furnace Number Batch Full Traceability

• Third Party Material Certification

• Process Parameters Open And Transparent

• Salt Spray Test Real Time Monitoring

• International Standard Compliance Declaration

Flexible Customization Capability

• Customizable head/slot Shapes

• Extreme Application Of Special Materials

• Breakthroughs In Extra Large/Long Specifications

• Integrated Assembly Of Components

• Customizable Surface Treatment Colors

• Personalized Packaging And Labeling

Technical Service

• On-Site Failure Analysis

• Selection Calculation And BOM Optimization

• Installation Tool Selection Guidance

• Inventory Management (VMI) Trusteeship

• Free Sample Making And Testing

• International Standard Translation And Interpretation

Multi-Material & Full Strength Series for Demanding Conditions & Long Durability

Our clevis pins are made of AISI 304/316 stainless steel or 45#/40Cr alloy steel, with strength grades including A2-70 (304), A4-80 (316), and carbon steel grades 8.8/10.9. The 316 stainless steel version offers exceptional chloride corrosion resistance, passing ≥720 hours of salt spray testing to withstand harsh coastal and humid environments. Carbon steel options with electro galvanizing, hot-dip galvanizing, or black oxide finishes balance high strength and rust/wear protection. With diameters ranging from 3mm to 50mm, they adapt to various load and application requirements.

Standardized Precision Design for High Fit & Anti-Loosening Performance

Manufactured to international standards including GB/T 882, ISO 2341, and DIN 1443, our pins feature a flat head with cross-hole and high-precision polished shaft. The smooth shaft minimizes wear during installation and operation, extending service life. When paired with cotter pins or R-clips, they provide dual anti-loosening security. The evenly distributed load on the flat head ensures stable performance under dynamic loads in lifting equipment and mechanical engineering, eliminating the risk of loosening or dislodgement for safe connections.

Quick-Install Design for Efficient Assembly Across Multiple Scenarios

The cross-hole design allows fast locking with cotter pins: simply insert the pin through the clevis, secure it with a cotter pin spread open in the hole, and the connection is complete. No special tools are needed for disassembly, greatly improving assembly and maintenance efficiency. Customizable lengths suit applications from automotive trailers to marine equipment and industrial machinery. The low-friction polished shaft also reduces installation resistance, making them ideal for both mass production and on-site retrofits with excellent versatility.

Application Scenarios

High-Quality Stainless Steel Self-Tapping Screw Display

Precision Fastening, Engineered for the Future – Chengdu Jingguda Trading Co., Ltd., Your Trusted High-Quality Fastener Expert

Chengdu Jingguda Trading Co., Ltd. is a professional fastener manufacturer integrating R&D, production, and sales. We specialize in high-precision, high-strength bolts, nuts, washers, and non-standard customized fasteners, covering international standards such as GB, DIN, ISO, ANSI, and ASME. Equipped with multi-station cold heading machines, high-speed thread rolling machines, fully automated heat treatment lines, and surface treatment equipment, we also operate an in-house laboratory featuring spectrometers, hardness testers, tensile testing machines, and salt spray testers to ensure strict quality control from raw materials to finished products. Our products are widely used in industrial machinery, renewable energy, automotive manufacturing, rail transportation, and more, known for their precision, corrosion resistance, and durability. Committed to “Fast Delivery, Professional Support,” we provide one-on-one customized solutions and efficient logistics, striving to be your ideal partner for reliable connections.

Industrial Capabilities

• Factory Area: 8,000 square meters

• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM

• Manufacturing : 70+ internationally advanced production lines

• Testing: 30+ sets of precision quality testing equipment

• Annual Output: Up to 50,000,000 tons

From Raw Materials to Finished Products

Our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and eco-friendly surface finishing enable closed-loop manufacturing from raw material to finished product. Thanks to inline optical sorting and a digital MES, every fastener meets stringent standards for strength, accuracy, and surface quality. You guarantee top-notch fasteners that are dependable, efficient, and eco-friendly.

Lab for Innovation:

We are always looking for fresh approaches, and expertise and teamwork are what propel us forward. Do you have a project underway? Now let's get going.

The Whole Joint R&D Process: "Customized Implementation" to "Pain Point Diagnosis"

We provide more than just standard parts. From the beginning, our multicultural engineering team actively contributes to your project. We carefully analyze the application context and customize solutions in the lab, smoothly fusing technology and application, to guarantee that innovative ideas are quickly transformed into practical solutions that reduce overall lifetime costs.

Integrated Verification System: Using "Test Data" to Ensure Innovation

The drawing board is only the beginning of the creative process. We offer one-stop verification for everything from corrosion testing to prototype development through our in-house technical center. We employ empirical data to verify the performance stability of customized solutions through comprehensive simulated working condition tests. In addition to achieving genuinely dependable cost reduction and efficiency improvement, this greatly lowers project risks.

Quick Service Response

Utilizing self-developed molds and flexible manufacturing lines to finish sampling and delivery within 7 days, intelligently schedule production utilizing digital quality control and agile supply chains to cut bulk order delivery times by 30% after confirmation. With our "Demand-Solution-Sampling-Production" closed-loop solution, you can take advantage of market opportunities for both standard bolts and custom-shaped parts.