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Locking pins are essential for securing various equipment and preventing accidental disengagement. Whether you need to keep a trailer hitch in place, secure a gate, or ensure the stability of a lawnmower deck, the right locking pin offers peace of mind and enhanced safety. Choosing a durable and reliable pin designed for your specific application is crucial for long-term performance.
1. Great Value 10-Pack: Includes 10-piece set of locking pins (0.25 inch diameter x 2.17 inches length) offers a practical solution for frequent replacement needs or projects requiring multiple pins.
2. Precision Size & Material: Each pin is precision-engineered to 0.25 inches in diameter and 2.17 inches in length. Made from high-quality zinc-plated steel for consistent performance and reliable strength.
3. Easy to Use & Reusable: Quick installation and removal with no tools required. Lightweight and compact for easy carrying and storage—ideal for fast attachment changes and field adjustments.
4. Heavy-Duty & Long-Lasting: Built to withstand heavy loads, vibration, and outdoor elements. The anti-rust finish and sturdy core resist corrosion and wear, ensuring dependable service over time.
5. A versatile and reliable lock: ideal for towing, agricultural, industrial, and vehicular applications, including trailers, farm equipment, PTO accessories, lawn mowers, table saws, trucks, and boats.
Material: Made of premium 304 stainless steel, with smooth surface and no burr, it has good corrosion resistance, rust resistance, stability and durability
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
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
Widely used: Widely used for fixing bolts and pins, such as automobile machinery, lawn mower, machinery, workshop, truck, small engine repair and so on
Packaging includes: There are 13 sizes in the cotter pin clamp combination kit, totaling 220pcs(Please refer to the picture for detailed dimensions). Hairpin Cotter Pin(133pcs): M1.5x25mm x 45pcs, M2.5x25mm x 25pcs, M2.5x30mm x 20pcs, M3.2x30mm x 20pcs...
Heavy duty pin assortment kit for tractors, trailers, trucks, Towing Mowing, Farm Equipment, Snow Plows, Lawnmowers, Garage, 3 points, PTOs and parts. Kit includes Square PTO pins, Lynch pins and Cotter pins (Hairpin)
Strong metal with great value.Zinc plated steel pins for rust and corrosion resistance. Suitable for outdoor long-term use
These pins have a wide range of usage and can be used for all kinds of equipment such as trucks, trailers, tractors, mowers, PTO, farm equipment, cars, camper vans, lawn and garden equipment, and more. They can replace weak trailer ball pins, dolly pins...
Double Side Hardware Organizers with Removable Plastic Dividers, heavy duty, portable and more space. Makes it easy to find correct item quickly, saves your time of running around looking for a particular size hitch pins
Whenever you need us, please free to contact us, we will give you a professional service
Easy to Use with No Tools Required: DECYOOL locking pin backs feature a heavy duty spring loaded fastener. No tiny wrenches or screw tools required,saving you time and frustration,simply push to lock them firmly and pull the base to release. Keep your...
Comfortable Material: Crafted from good quality nickel plated copper, these pin backs locking clasps are built to last. The smooth, flat back design prevents the sharp pin metal from scratching your skin or snagging your clothes,pin locks are incredibly...
Universal Fit for All Standard Pins: With a reasonable size of 0.39" (1 cm) in diameter and 0.24" (0.6 cm) in height, these mini pin backs low profile design won't poke your skin or snag your clothes. locking pin backs are lightweight, convenient to...
Multi Scene Versatility: Designed for ultimate versatility. These metal locking pin backs are the good match for enamel lapel pins, brooches, insignia, military badges, name tags, citation bars, lanyards, hats, and vests. Ideal for pin collectors, scouts...
Never Loose Your Valuable Pins: This package includes 30 pieces of premium pin backs locking, offering a sufficient and cost effective solution to meet all your replacement needs.Never worry about losing them on backpacks, jackets, or hats again
[Quality Material] Upgraded locking pin backs are made of quality nickel-plated copper, durable and sturdy, unique snap design, locks your needle securely, keep them secure will not fall off or get lost.
[Easy to Use] No tools required, spring loaded latch design for easier locking and removal, just push the base to lock and secure them, pull to release the lock and remove it. change your pins whenever you want.
[Widely Used] The metal pin backs are suitable for pins, lapel pin, name tags, display books, lanyards, bags, vests, hats, jean button, badge, enamel pin and DIY crafts etc.
[Best Choic] 30PCS pin back locks with clear storage case packed, more convenient storage, The size of the pins back is 0.4inch diameter, 0.25inch height, small and easy to use. better meet the decorating needs of you and your family.
[Satisfaction Guarantee] We sincerely provide you with high quality products and services. If you have any questions about our products, please contact us and we will provide you with a satisfactory solution for you within 24 hours!
【Essential for RV & Farm Lifestyles】This 8-pack of trailer pins is a game-changer for RV families, farmers, and anyone who owns a trailer. With enough spares to keep in your truck, RV, or tool shed, it covers all needs—from daily farm equipment use...
【Standard Size for Snug Fit】Designed with 2-3/4" x 1/4" (L x W) standard dimensions, this trailer pin fits most coupler latch holes seamlessly. It locks snug and securely to prevent accidental detachment, perfect for several different trailers, wood...
【Premium Durability & Rust Resistance】Our trailer hitch pin crafted from high-quality carbon steel with zinc plating, sturdy enough to stay closed. The corrosion-resistant finish ensures long-lasting performance even in outdoor farm, yard, or towing...
【Versatile Locking Retainer】More than a basic lock pin, this multi-functional trailer coupler pin works for securing ramp doors, trailer gates, and even organizing wrenches. It's a must have for farm uses—from attaching tractor carts to fixing yard...
【Reliable Safety for Every Use】The strong locking retainer design of our trailer hitch pins ensures your cargo, equipment, and family stay safe during transit. It's sturdy enough for farm tasks, reliable for RV road trips, and practical for home...
【1/4" DIAMETER PIN】The 1/4-inch diameter and 2-2/5-inch length of this coupler safety pin make it highly versatile to fit a wide variety of trailer couplers. It can also be used for a trailer jack wheel, pintle hook and more.
【High Carrying Capacity】The pto pin made of high-quality carbon steel and has a strong load carrying capacity. It is structurally strong and difficult to loosen when in use.
【Corrosion-Resistant】Protected by a durable zinc-plated finish, the shaft locking pin maintains excellent resistance to rust and corrosion for longevity, you don’t have to worry about it degrading over time.
【Good Safety Performance】This pto hitch pin provides a reliable solution for keeping your trailer coupler latch engaged with the trailer ball. The solid pin offers ample strength while the retainer clip ensures the pin will not vibrate or rattle free.
【WIDELY USE】The loop wire lock is ideal for table saw, lawn, gardening, farming, truck, boat, trailer or other locking applications.
Last update on 2026-08-30 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Locking Pins
Material and Durability
Locking pins are often exposed to the elements, so material is a key consideration. Stainless steel offers excellent corrosion resistance and strength, making it ideal for outdoor or marine applications. Carbon steel pins, often zinc-plated or coated, provide good durability for general use. Consider the weight capacity and tensile strength required for your specific application to ensure the pin won't fail under load.
Type of Locking Mechanism
Several locking mechanisms exist, each offering different levels of security and ease of use.
Keyed Locks: Offer the highest security, requiring a unique key to unlock. Ideal for valuable equipment or where unauthorized access is a concern.
Combination Locks: Provide keyless convenience, suitable for quick access. Security can vary depending on the complexity of the combination.
Spring-Loaded or Pin-Style Locks: Simple and quick to engage and disengage, often used for non-critical applications where theft is not a primary concern.
Size and Fit
Ensure the pin's diameter and length are appropriate for the hole it needs to secure. A pin that is too small may not provide adequate security, while one that is too large will not fit. Measure the hole and consider any necessary clearance for smooth operation. The locking mechanism should also be compatible with the surrounding hardware.
Frequently Asked Questions
What is the difference between a keyed and a combination locking pin?
A keyed locking pin requires a unique physical key to unlock, offering a higher level of security. A combination locking pin uses a sequence of numbers or symbols to open, providing keyless convenience.
How do I determine the correct size locking pin I need?
You'll need to measure the diameter of the hole the pin will pass through and the depth of the area it needs to secure. Ensure the pin's diameter fits snugly without being too tight, and its length is sufficient to go through the entire assembly plus the locking mechanism.
Are stainless steel locking pins worth the extra cost?
Stainless steel offers superior resistance to rust and corrosion, making it an excellent choice for environments exposed to moisture, salt, or chemicals. If your application is outdoors or in harsh conditions, the longevity and reliability of stainless steel can justify the higher initial investment.
Can locking pins be used for high-security applications?
Yes, certain types of locking pins, particularly those with robust keyed mechanisms and strong materials like hardened steel or stainless steel, can be used for high-security applications. Always check the pin's specifications for load ratings and intended security level.
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