Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
Browse all specialty caster types
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.
Optimize your equipment mobility with the Durastar 3" x 1-1/4" Nylon Swivel Threaded Stem Caster, engineered for reliability, ease of movement, and long-term performance. With a 300 lb load capacity, this caster is perfect for carts, racks, equipment stands, and various mobile applications requiring medium-duty support.
The high-impact nylon wheel delivers exceptional durability while offering a smooth, quiet roll. It is non-marking and resistant to water, oil, and most chemicals, making it an excellent choice for both industrial and commercial environments.
Designed with user adaptability in mind, this caster is available with three different threaded stem sizes: 1/2"-13 x 1", 1/2"-13 x 1-1/2", and 1/2"-13 x 2-9/16". This ensures compatibility with a wide range of mounting requirements, making installation quick and secure.
The precision swivel bearing provides effortless navigation in confined areas, while the zinc-plated fork enhances durability and corrosion resistance, helping to extend the caster’s service life even in challenging conditions.
Choose Durastar for superior quality and dependable mobility solutions. Whether you're outfitting new equipment or replacing worn casters, this nylon swivel threaded stem caster delivers consistent performance you can trust.
Order processing
In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.
Shipping method
Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.
Payment & procurement terms
New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.
Volume pricing & quotes
Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.
Returns & warranty
Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas and freight deliveries may take longer.
For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.
The Durastar 3" x 1-1/4" Nylon Swivel Threaded Stem Caster is a versatile, high-performance mobility solution designed for industrial, commercial, and institutional use. With a 300 lb load capacity and smooth swivel action, this caster provides the strength and maneuverability needed for medium-duty applications.
Its durable nylon wheel offers a quiet, non-marking roll across a variety of surfaces, making it ideal for carts, racks, equipment stands, and more. Built with a zinc-plated fork for corrosion resistance, this caster is engineered to deliver long-lasting, maintenance-friendly performance.
To ensure optimal installation flexibility, this model is available with the following threaded stem sizes:
The caster’s high-impact nylon wheel is engineered for low rolling resistance and excellent floor protection. It resists water, oils, chemicals, and abrasions—making it suitable for demanding workspaces such as warehouses, production lines, medical facilities, and labs. The precision swivel bearing enables effortless movement in tight spaces, reducing operator fatigue and improving efficiency.
Its zinc-plated steel fork provides a protective barrier against rust and corrosion, helping to maintain performance and appearance over time. Whether used in wet, dry, or chemically exposed environments, this caster is built to last.
Trusted for quality and performance, Durastar casters are a smart upgrade for businesses that demand mobility, efficiency, and durability. Whether you're replacing worn components or enhancing a new project, this caster offers the features and flexibility needed to get the job done right.
This 3" x 1-1/4" Nylon Swivel Threaded Stem Caster – 300 lb is rated to 300 lbs per caster. Size a set by dividing the total load by the number of casters, and for uneven floors assume 3 of 4 casters carry the load. Keep continuous-use loads within about 75-80% of the rating.
This caster runs a Nylon wheel with a 1-1/4" tread width. Nylon resists chemicals and moisture and carries high loads, which suits washdown and wet environments.
This caster uses a Threaded Stem mount. Stem casters press or thread into a socket - verify the stem diameter and length match your existing setup before ordering.
This is a Swivel caster. Swivel casters rotate 360 degrees for full maneuverability. For most mobile equipment we recommend 2 swivel + 2 rigid, or 4 swivel with at least 2 brakes.
Rated for -20°F to 180°F. Operating outside the rated range can reduce wheel life and load capacity, so match it to your environment (wash-down, freezer, oven-adjacent, etc.).
The Nylon wheel performs best on smooth, hard industrial floors. For non-marking or clean-environment needs, ask us about matching tread options.
The overall height (floor to top of plate or stem) is 4-3/16". Account for it when checking equipment clearance, dock height, and ergonomic working height.
We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).
$10.00
| Identification | |
| Brand | Durastar |
| Dimensions & Mounting | |
| Wheel Diameter | 3" |
| Wheel Tread Width | 1-1/4" |
| Overall Height | 4-3/16" |
| Mount Style | Threaded Stem |
| Rig Type | Swivel |
| Load & Performance | |
| Wheel Capacity | 300 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Nylon |
| Frame Material | Zinc Plated Steel |
3" x 1.25" Polyurethane Swivel Caster – 300 lb | 1/2" x 1.5" Threaded Stem
3" x 1-1/4" · 300 lbs
$20
3" x 1-1/4" Steel Swivel Caster – 300 lb | 1/2"-13x1-1/2" Threaded Stem | CasterHQ
3" x 1-1/4" · 300 lbs
$23
3" x 1-1/4" Swivel Expandable Adaptor Caster – 300 lb | CasterHQ
3" x 1-1/4" · 300 lbs
$18
View all 3" x 1-1/4" casters & wheels · 300-1,250 lb · medical, lab, toolbox →
Your selection is highlighted. Every option shares its wheel size and mount; a Direct fit tag means the same mounting plate — a drop-in replacement. Step up or down in load rating, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| 225 lbsLighter duty | 3" × 1-1/4"Gray Rubber | Swivel | 4" | $14.00 | View → | |
| 275 lbsLighter duty | 3" × 1-1/4"Polyurethane | Swivel | 4-3/16" | $23.00 | View → | |
| 300 lbs | 3" × 1-1/4"Nylon | Swivel | 4-3/16" | $10.00 | Viewing | |
| 300 lbsSame capacity | 3" × 1-1/4"Blue Solid Polyurethane | Swivel | 4-3/16" | $20.00 | View → | |
| 300 lbsSame capacity | 3" × 1-1/4"Cast Iron | Swivel | 4" | $23.00 | View → |





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