Circle Cotter Pins of 2025
Best Choice1
SEACHOICESeachoice Stainless Steel Cotter Ring Kit, 66 Piece, All Popular Sizes
Why we love it
Corrosion-resistant for marine use.
Includes all popular sizes.
Secure and reliable performance.
9.8Exceptional
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Value for Money2
CREVIV1000 Piece Cotter Pin Assortment Kit - 6 Sizes (1/16” to 5/32”) Durable Split Pins with Case, Corrosion-Resistant for Tractors, Trailers, Marine & Industrial Machinery - Bulk Multi-Size Cotter Key Set
Main highlights- Versatile Use: Ideal for securing pins, rods, and bolts in automotive, machinery, gardening, and home improvement projects. These pins are perfect for use in automotive repair, DIY projects, and mechanical assemblies.
- Reliable and Strong: Featuring a sharp, tapered design that ensures a secure hold and a smooth fit into fastening holes, providing a reliable solution for all your pinning needs.
- Perfect for Various Applications: Whether you're fixing your car, assembling machinery, or tackling home improvement projects, this cotter pin assortment provides the right sizes for a wide range of tasks.
- High-Quality Carbon Steel: Made from durable, high-strength carbon steel, these cotter pins are designed to resist corrosion, wear, and damage, ensuring long-lasting performance even in demanding applications.
- Easy Organization: Each cotter pin size is neatly organized in a sturdy, compartmentalized storage case, making it simple to find the right size quickly and keep your workspace tidy.
9.7Exceptional
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3
DunkiveDunkive 66 Pcs 5 Sizes Stainless Steel Cotter Ring Kit, Durable 316 Stainless Steel Split Rings Secure Popular Sizes of Clevis Pins, Corrosion Resistant Marine Hardware for Hitch Pin Lock Systems
Main highlights- Wide Range of Applications: our stainless steel split rings are ideal for securing rigging, sail lines, anchor chains, life rings and other boating equipment; In addition, it is possible to replace the hitch pins on most equipment that came with weaker pins, such as trailer ball pins, dolly pins, hand truck pin replacements, tractor cotter pins, and so on
- Safe and Reliable Cotter Ring Design: our cotter rings have high tensile strength and can withstand strong pulling force and impact, even under harsh conditions such as strong wind, waves or heavy loads, they ensure a safe connection; Compared with cotter pins, cotter rings have no external sharp edges, will not hook any sails and other fabrics, and will not cut people's ankles, which is safer and more reliable
- Quality 316 Stainless Steel: our stainless steel cotter rings are made of quality 316 stainless steel and have excellent rust and corrosion resistance compared to 304 stainless steel and ordinary 316 stainless steel, making these cotter rings ideal for use in harsh environments such as salt water, fresh water and humid conditions
- Easy to Use: slide the open end of the cotter ring through the hole of the component you want to secure, use your fingers or pliers, gently bend the tail of the cotter ring to lock the bolt quickly and effectively; It provides quick and secure hold for bolts, easy to install and remove
- 66 Pcs in 5 Sizes: different sizes can meet your different daily needs; There are 5 sizes in the stainless steel cotter ring kit; 5 kinds of cotter ring diameter are respectively 3/8"(20pcs), 7/16"(20pcs), 3/4"(10pcs), 7/8"(10pcs) and 1-1/8"(6pcs); The kit can secure 3/16 inch, 1/4 inch, 5/16 inch, 3/8 inch and 1/2 inch clevis pins
9.5Excellent
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4
DAONEG144PC Large Assorted Cotter Pins Extra Large Pin Assortment Cotter Keys Set
Main highlights- These large cotter pins are perfect for a variety of applications and resist corrosion because they are made with galvanized steel.
- Set includes: 50pc- 1/8x2", 30pc-5/32x2-1/2", 20pc- 3/16x3", 16pc- 1/4x3", 20pc- 1/4x2", 8pc- 5/16x2-1/2" cotter pins
- Conveniently labeled and divided storage box
9.2Excellent
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5
Seept20% OffSeept 200 Pcs Cotter Pins Assortment Kit 304 Stainless Steel Hitch Pin Clip Tractor Used for Hitch Pin Lock System Farm Tools and Tractor implements/Tractor Accessories/Parts
Main highlights- Universal application: Whether you're working on cars, axles, trailers, or tractors, our cotter pin assortment kit offers a highly versatile solution for all your fastening needs
- Sufficient quantity:You will receive 200pcs cotter pins and packed in the exquisite plastic box,including cotter pins M1.6x25-30pcs, M2.5x25-20pcs, M2.5x30-20pcs, M3.2x30-20pcs, M3.2x40-16pcs, M4x60-7pcs;R-cotter pin 1.0x16mm-20pcs,1.2x21mm-20pcs,1.6x28mm-20pcs,1.8x35mm-10pcs,2.0x40mm-8pcs,2.5x50mm-5pcs,3.0x65mm-4pcs
- High-quality materials: Crafted from galvanized steel, these cotter pins and R pin boast high hardness, excellent tensile strength, and superior impact resistance, ensuring long-lasting durability and reliability
- Easy to use: The user-friendly design of these cotter pins ensures a hassle-free installation process, saving you time and effort on securing crucial vehicle and machinery parts
- Clean and aesthetic finish: With a smooth surface and no burrs, our cotter pins not only provide a secure fastening solution but also enhance the overall look of your equipment
9.1Excellent
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6
GlarksGlarks 555Pcs Heavy Duty Zinc Plated Cotter Pin Assortment Kit
Main highlights- 5. Application: Widely used for automotive, mechanics, car garage, workshop, power equipment, cars, trucks, lawn mower and etc
- 4. Product Feature: The hair pin style design gives fast and secure hold for bolts and pins that way your work never gets undone
- 3. Package: Include 6 widely used size of 1/16” x 1”, 3/32” x 1”, 3/32” x 1”-1/2”, 1/8” x 1-1/4”, 1/8” x 2”, 5/32” x 2-1/2”
- 2. Material: Zinc plated steel, Corrosion-resistant to ensure long time use
- 1. Product Type: High quality cotter pin assortment kit
9.0Excellent
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7
EoppenEoppen Cotter Pin Assortment Kit 304 Stainless Steel 13 Sizes Hardware Pins & Hairpin R Clips for Hitch Pin Lock Systems
Main highlights- Widely used: Widely used for fixing bolts and pins, such as automobile machinery, lawn mower, machinery, workshop, truck, small engine repair and so on
- Product features: The cotter pin can be directly inserted into the hole to quickly and safely fix all kinds of nuts and bolts, which can prevent the relative rotation of nuts and bolts and is easy to install and disassemble
- Packaging includes: There are 13 sizes in the cotter pin clamp combination kit, totaling 200pcs(Please refer to the picture for detailed dimensions). Hairpin Cotter Pin(113pcs): M1.5x25mm x 30pcs, M2.5x25mm x 20pcs, M2.5x30mm x 20pcs, M3.2x30mm x 20pcs, M3.2x40mm x 16pcs, M4x60mm x 7pcs; R Clips Cotter Pin(87pcs): M1x16mm x 20pcs, M1.5x21mm x 20pcs, M1.6x28mm x 20pcs, M1.8x35mm x 10pcs, M2x40mm x 8pcs, M2.5x50mm x 5pcs, M3x65mm x 4pcs
- Material: Made of premium 304 stainless steel, with smooth surface and no burr, it has good corrosion resistance, rust resistance, stability and durability
- Convenient & practical: Cotter Pin Assortment Kit is packed in a reusable box with easy-to-read size labels, which is easy to carry and manage and can meet your different needs
8.9Very Good
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8
NEIKONEIKO 50454A Cotter Pin Assortment | 555 Piece | Zinc Plated Premium Quality | Steel Split Pin Fastener Clips | Straight Hairpins | Holds Pins or Castle Nuts in Place
9.5 Storage space9.3 materials Quality8.4 lasts a long timeWhy we love it
Versatile for various automotive and household applications.
Durable zinc-plated steel ensures long-lasting use.
Convenient storage case for easy organization.
8.8Very Good
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9
TugermoolaTugermoola 230PCS 12 Sizes Cotter Pins Assortment Kit 304 Stainless Steel Split Pin Fastener Clips OLA001
Main highlights- WIDE APPLICATION: Our stainless steel cotter pins with hair pin style design can quickly fix various bolts and pins, widely used in repair and fastening work such as automotive, mechanics and lawn mowers
- PRODUCT SPECIFICATION: M1.5x16(30pcs);M1.5x25(30pcs);M2x16(30pcs);M2x25(30pcs);M2.5x16(20pcs);M2.5x25(20pcs);M3x16(20pcs);M3x25(20pcs);M4x25(10pcs);M4x50(10pcs);M5x50(5pcs);M6x50(5pcs) cotter pins, total 230pcs
- PRODUCT FEATURES: Tugermoola cotter pins is with smooth surface, high strength and corrosion resistance, can play stable roles in bad environment for a long time
- PACKAGE CONTENT: 12 sizes 230 pieces cotter pins neatly placed in a plastic box, different sizes and enough quantities can meet your daily needs
- MATERIAL: 304 stainless steel
8.7Very Good
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10
LRVOJUYLRVOJUY 220PCS Cotter Pin Assortment Kit, 13 Sizes Premium 304 Stainless Steel Cotter Pins, Heavy Duty R Clips & Hairpin Cotter Pin Set, Hardware Pins for Automotive, Trailer, Hitch Pin Lock System
Why we love it
High-quality stainless steel construction.
Ideal for various applications.
Easy to install and remove.
8.6Very Good
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