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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...
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
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
AMERICAN OWNED, FAMILY OPERATED - Join the Rhino USA Family and Support a Father/Son Business With the Best USA-Based Customer Support.
ULTIMATE HITCH SECURITY - Anti-Theft Hitch pin Made From Solid Steel for Maximum Security. Protect Your Trailer and Hitch From Theft With a Durable, Tamper-Resistant Design Built for Ultimate Peace of Mind.
FITS STANDARD HITCH SIZES - Our Towing Hitch Lock Fits all Class III & IV Hitches (2" x 2") With Ease, Providing a Secure and Reliable Connection for Trailers, RVs, and Other Towing Needs.
PATENTED SLIDE CAP – Designed With a Weatherproof Cover to Block Dirt, Mud, and Debris, Keeping Your Hitch pin Clean and Ensuring Long-Lasting Durability and Performance.
REAL LIFETIME REPLACEMENT - All Rhino USA Products Come With a Lifetime Replacement. If you Encounter any Issues, We'll Ensure You're 100% Satisfied With a Replacement or Refund.
All parts are made of Marine grade 316 stainless steel, Excellent seawater corrosion resistance and durable
Made of high quality stainless steel 316,Strong corrosion resistance and dura-ble in saltwater circumstance, suitable for outdoor long-term use
Safety coupler pin has 1.97" (50mm)length and 3/16" (4.8mm) diameter，Small Pins Please check the size first, suitable for quick release applications in most situations
Widely used in table saw, lawn, gardening, farming, truck, boat and top canopy part, trailer, satellite antenna, gazebo, plow, finish mower and boom sprayer ,tractoror other locking applications.
Heavy duty Shaft Locking Pin work perfectly as a replacement for lose part and lock into position.
DURABLE CORROSION RESISTANCE: Upgraded Zinc-plated steel cotter pins provide improved rust resistance, suitable for trailers and indoor/outdoor equipment. Designed to withstand UV exposure and heavy loads
SMART ORGANIZATION：YOUR TOOLBOX ESSENTIAL :No more Waste Time Searching for the Right Size Locking Pin Again! This compartmentalized plastic toolbox organizes 5 sizes of cotter pins in clearly labeled slots—so the suitable locking pins，clevis pins...
EASY INSTALLATION AND LOCK – NO TOOLS NEEDED: Quickly secure R-clips and cotter pins by hand within seconds. Designed for Moms, DIY'ers, and pros- alike to secure strollers, lawn mowers, or trucks
RELIABLE LOCKING PERFORMANCE: Helps reduce nut loosening under vibration and stress. Reinforced cotter pins and R-clips offer a secure hold on mower decks, truck parts, and farm machinery
VERSATILE USAGE – INDOOR & OUTDOOR: Whether you're maintaining agricultural equipment, securing trailer hitches, repairing lawn mowers, or tackling DIY projects, this cotter pin set has the right hardware pins for your job. Offers practical pin fasten...
Last update on 2026-07-09 / 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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