Polyolefin Swivel Square Stem Caster Wheel with 4 Inch Black Wheel – 3/4” x 2” Square Stem with (3) 17/64” Diameter Mounting Holes and Top Lock Brake – 350 lbs. Capacity/Caster – Service Caster Brand

Details

Manufacturer

Service Caster

Model

Series #20

SKU

SCC-SQ20S414-POS-TLB-34

Condition

new

Quantity

1

UPC

734005238921

Harmonized code

8302.20.0000

Dimensions (L x W x H)

5 x 5 x 5 in

Shipping weight

9 lb

Posted

Sep 17, 2026, 7:00 PM CDT

Specifications

Capacity

350

Color

Swivel - Top Lock Brake - Black

Heat Capacity

-20 degrees F to 180 degrees F

Item Dimension Unit of Measure

inches

Item Weight Unit of Measure

pounds

Load Height

5-1/8"

Locking Type

Top lock brake

Lower Temperature

-20

Lower Temperature UofM

F

Material Type

Polyolefin

Maximum Temperature

180

Maximum Temperature UofM

F

Mounting Height

5-1/8"

Mounting Type

Square Stem

Plating/Coating

Bright Zinc Plated Finish

Casters Mounting Method

Stem

Locking Castersor Wheels

Yes

Swivels

Yes

Size

4" Wheel - 3/4" Stem

Stem

3/4" x 2" Square Stem

Stem Diameter

3/4"

Stem Length

2

Stem Length UofM

inches

Stem Type

Square Stem

Tread Width

1.25

Tread Width UofM

inches

Type

Swivel caster w/top lock brake

Wheel Bearing

Plain Bore

Wheel Diameter

4

Wheel Diameter UofM

inches

Wheel Material

Polyolefin

Wheel Size

4" x 1-1/4"

Wheel Type

Polyolefin

Description

Listing is for one (1) Service Caster Series #20 swivel caster with a 4” diameter by 1-1/4” wide white polyolefin wheel and a 3/4" square stem with top lock brake capable of supporting 350lbs./caster. When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 square stem polyolefin wheel casters. The Service Caster Series 20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. The zinc plated finish provides durability under any condition, and the nylon wheels provide very low rolling resistance, show a high resistance to many aggressive substances, and under normal operating conditions are maintenance free. Resistant to most chemical and oils, these polyolefin wheels will keep you safely moving forward. The square stems are designed to be bolted or riveted onto the inside of angled iron legs or against any flat surface. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. • These Service Caster Series #20 Polyolefin casters offer various wheel sizes and mounting heights: 3” Wheel: 4-1/8” mounting height; 4” wheel: 5-1/8” mounting height; 5” wheel: 6-1/8” mounting height. • Weight Capacity: 3": 300 lbs Capacity/Caster; 4" and 5": 350 lbs Capacity/Caster • All casters feature a 3/4” x 2” square stem with (3) 17/64” diameter mounting holes. Don't see the size you need? No problem! Call us or message us by clicking the blue Service Caster Corporation hyperlink underneath the buy or add to cart button and then clicking the ask a question button. • Brake options include a top lock brake (TLB) or a total lock brake (TTL). The top lock brake (TLB), which is featured on 3", 3-1/2", 4", and 5" wheel sizes, places a positive locking force against the wheel tread locking the wheel only. The total lock brake (TTL), which is featured on all wheel sizes, also places a positive locking force against the wheel tread, but the total lock brake (TTL) simultaneously locks the wheel and the swivel for a complete stationary position.