Up to 350 lbs
Up to 6,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
High-capacity loads
Shock absorbing
Corrosion resistant
Outdoor / rough terrain
OEM replacements
All measurements indicate the wheel diameter by the tread width.
The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.
W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.
Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.
PRODUCT CODE: FL-400-A
Enhance equipment stability with the Durastar Floor Lock, specifically designed for carts and mobile workstations requiring temporary braking. With a rugged, industrial-grade steel build, this floor lock offers consistent performance under demanding conditions.
The unit's 5-3/4" extended height provides reliable floor contact, ensuring equipment remains securely in place during loading, unloading, or maintenance. When disengaged, the 5-1/16" retracted height minimizes drag and interference, allowing for effortless mobility.
Featuring a universal 4" x 4-1/2" top plate (03 plate size), this floor lock is designed to seamlessly integrate with standard caster configurations. It's the ideal upgrade for applications in warehouses, manufacturing plants, laboratories, and other facilities requiring precise load control and stationary support.
Trust the Durastar 5-3/4" Floor Lock to deliver dependable floor engagement and industrial strength support. Keep your operations steady and secure with a locking solution engineered for performance and ease of use.
Transparent pricing
All pricing and quantity discounts are applied automatically. No promo codes required and no post-checkout price changes.
Upfront shipping costs
Shipping is calculated by order size and weight. Final shipping costs are shown before payment so there are no surprises.
Business-friendly ordering
We support bulk orders, repeat purchases, and fast quotes for larger or custom requirements.
Real support from product specialists
Need help confirming fit, compatibility, or application? Our team works directly with engineers, maintenance teams, and buyers every day.
Trusted by industrial and commercial customers
CasterHQ supplies casters and wheels for manufacturing, material handling, retail, and distribution environments nationwide.
When will my order ship?
In-stock items typically ship same or next business day. Weekend orders ship Monday or Tuesday unless stated otherwise.
Will shipping cost more at checkout?
Shipping is not free on most orders. Your final shipping cost is shown before payment.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas may take longer.
Some custom products (select Made in USA casters, keyway wheels, drive wheels) are built after purchase and ship on a longer lead time. When applicable, the ship-time estimate is shown on the product page.
Contact us before ordering and we’ll confirm total landed cost upfront. Contact us.
The Durastar 5-3/4" Floor Lock is expertly engineered to stabilize carts, mobile workstations, and equipment in industrial and commercial environments. Designed with a heavy-duty steel frame and a widely compatible 4" x 4-1/2" (03 top plate), this floor lock offers a dependable solution for securing mobile units during stationary tasks.
Its extended height of 5-3/4" ensures solid floor contact for optimal stability when engaged, while the retracted height of 5-1/16" allows for unobstructed mobility. The dual-position functionality is ideal for facilities that require both locking and rolling capabilities, such as assembly lines, distribution centers, medical labs, and manufacturing stations.
Engineered to meet industry standards, the bolt hole pattern (2-5/8" x 3-5/8" to 3" x 3") and 3/8" attaching bolt diameter offer flexible installation across a variety of base configurations. Whether you are outfitting new carts or upgrading existing setups, this floor lock is a reliable, maintenance-friendly addition to your mobility solution.
Backed by Durastar’s commitment to quality and durability, this floor lock not only enhances workplace safety but also improves workflow efficiency by ensuring equipment stays exactly where you need it—when you need it. Trust Durastar to deliver performance-driven design with precision engineering you can rely on.
$42.00
| Temp Range | -20°F to 180°F |
| Frame Material | Zinc Plated Steel |
| Bolt Hole Pattern | 2-5/8" x 3-5/8" |
| Mount Style | Plate |
| Plate Size | 4" x 4-1/2" |
Designed for engineers, manufacturers, and material handling professionals
