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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.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″
BHP: 1-3/4″ × 2-7/8″, slotted to 3″
BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″
BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″
BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)
BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)
BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"
BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"
(3″ Wide Casters), Industry-Standard
(3″ Wide Casters), Industry-Standard
BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"
BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"
BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"
BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"
View All • 21 Plate Sizes
View All • 21 Plate Sizes
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Caster Wheel Materials & Selection Guide

Caster Wheel Materials & Selection Guide
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Hand Truck Wheels
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Phenolic Wheels
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Metal Wheels (All Types)
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Flat-free (Foam-filled)
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Caster Plate Mounting Hardware

Caster Plate Mounting Hardware
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Quick Change Caster Pads
Caster Frames - Swivel & Rigid

Caster Frames - Swivel & Rigid
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Sockets & T-nuts For Casters
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Expanding Rubber Adapter Kits
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Axles & Nuts
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Caster Shims & Weld Plates
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Floor Truck Locks
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Wheel Bearings
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4" x 2" Thermoplastic Rubber Casters

Plate sizes: 4 x 4-1/2Bolt holes: 2-5/8 x 3-3/8 slotted to 3 x 3Diameter: 4 inTread: 2 inCapacity: up to 300 lb
4 x 4-1/2 inch top-plate casters for finished floors and quiet institutional carts. Expect wheel diameters 4 in, rubber and stainless treads, and capacities 300 lb. Use kingpinless or heavy plate series when shock loads keep shearing kingpin races. Size capacity from the heaviest corner load with shock margin, and keep overall height consistent across the set. These light-duty options cover everyday finished floors and quiet institutional carts without jumping to extreme forged series.

2 options in this exact size and spec. See all casters by load capacity and mount type › or call 844-439-4335 for a cross-reference.

300 lbs
TieredPricing
Durastar Medium Heavy Duty S34 Series - 4" x 2" Thermoplastic Rubber Swivel Caster - 300 lb Capacity, & 4" x 4-1/2" Stainless Top Plate Durastar
Ships in 1-3 Business Days
4" x 2" Thermoplastic Rubber Swivel Stainless Caster – 300 lb · DuraStar S34 Series
Part # S34-S-420-TPR-03
from $54.00
Volume pricing available
Gray RubberPlate
Load rating
300 lbs
Diameter 4"
Capacity 300 lbs
Wheel Gray Rubber
Mount Plate
Plate Size 4" x 4-1/2"
More Details Less Details
Width 2"
Height 5-5/8"
Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"
Core Polyolefin
Temp Range -20°F to 180°F
Rig Type Swivel
Brake No Brake
Frame Stainless Steel
Durastar Medium Heavy Duty S34 Series - 4" x 2" Thermoplastic Rubber Swivel Caster...
Shop Product
300 lbs
TieredPricing
Durastar Medium Heavy Duty S34 Series - 4" x 2" Thermoplastic Rubber Rigid Caster - 300 lb Capacity, & 4" x 4-1/2" Stainless Top Plate Durastar
Ships in 1-3 Business Days
4" x 2" Thermoplastic Rubber Rigid Stainless Caster – 300 lb · DuraStar S34 Series
Part # S34-R-420-TPR-03
from $43.00
Volume pricing available
Gray RubberPlate
Load rating
300 lbs
Diameter 4"
Capacity 300 lbs
Wheel Gray Rubber
Mount Plate
Plate Size 4" x 4-1/2"
More Details Less Details
Width 2"
Height 5-5/8"
Bolt Pattern 2-5/8" x 3-5/8" slotted to 3" x 3"
Core Polyolefin
Temp Range -20°F to 180°F
Rig Type Rigid
Brake No Brake
Frame Stainless Steel
Durastar Medium Heavy Duty S34 Series - 4" x 2" Thermoplastic Rubber Rigid Caster...
Shop Product

4-Inch TPR Threaded Stem Casters

4-inch thermoplastic rubber (TPR) threaded stem casters. Gray non-marking TPR wheels with threaded stem mount for easy bolt-in installation. Rated up to 300 lb per caster. Perfect for wire shelving, racks, carts, and equipment with threaded stem sockets.

Wheel: 4″ | Tread: Gray TPR | Mount: Threaded stem | Load: Up to 300 lb | Bearing: Ball | Swivel & rigid

Frequently Asked Questions

What is a threaded stem caster? ›
A threaded stem caster has a bolt-style stem that screws directly into a threaded socket on your equipment. No mounting plate needed — just thread it in.
What thread size do these use? ›
CasterHQ TPR threaded stem casters are available in multiple stem sizes. Check the specific product listing for stem diameter and thread count.
Are these non-marking? ›
Yes. Gray TPR tread is non-marking and floor-safe on tile, hardwood, and polished concrete.

Related Collections

All TPR Threaded Stem Rubber Caster Hub 5-Inch TPR Stem 6-Inch TPR Stem 8-Inch TPR Stem

CasterHQ — nationwide industrial caster and wheel supply. ISO-certified, ANSI-tested. Same-day dispatch on in-stock orders. Call 844-439-4335 or contact us for expert sizing help.

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