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Threaded Stem Casters - 1/2"-13x1-1/2" Stem Sizes - Steel Wheels

Diameter: 3 to 5 inTread: 1-1/4 inStem: 1/2-13 x 1-1/2 inCapacity: 300 to 350 lb per caster
1/2-13 threaded stem casters with steel wheels: semi-steel and cast iron treads. Semi-steel is the most common tread here, rated 300 to 350 lb per caster in 3, 4 and 5 in. Other treads: cast iron 300 lb.

1/2-13 threaded stem casters with steel wheels by tread

Tread Core Wheel sizes Rated per caster Listed temperature Where it fits
Semi-steel 3, 4 and 5 in 300 to 350 lb -45°F to 180°F rough floors, heat and heavy loads
Cast iron 3-1/2 in 300 lb heat, chips and heavy loads on rough floors

Ratings are for single casters of 1/2-13 threaded stem casters with steel wheels, from product fields [S1].

Wheel sizes

Wheel Treads Rated
3 x 1-1/4 in semi-steel 300 to 350 lb
3-1/2 x 1-1/4 in cast iron 300 lb
4 x 1-1/4 in semi-steel 300 lb
5 x 1-1/4 in semi-steel 300 lb

Choosing 1/2-13 threaded stem casters with steel wheels

  1. Load: plan on three casters carrying a four-caster cart [S2]; at 300 lb each, a common rating here, that is about 900 lb, and the 350 lb top rating covers about 1,050 lb.
  2. Stem: the most common stem on 1/2-13 threaded stem casters with steel wheels is 1/2-13 x 1-1/2 in; check the old stem with calipers before ordering.
  3. Floor: on 1/2-13 threaded stem casters with steel wheels, semi-steel and cast iron suit smooth concrete and heavy loads, but are loud and hard on tile and wood.
  4. Rig: swivel 1/2-13 threaded stem casters with steel wheels are listed.

1/2-13 threaded stem casters with steel wheels questions

How much weight can 1/2-13 threaded stem casters with steel wheels carry?

Single 1/2-13 threaded stem casters with steel wheels are rated 300 to 350 lb.

What stem do 1/2-13 threaded stem casters with steel wheels use?

Most 1/2-13 threaded stem casters with steel wheels list 1/2-13 x 1-1/2 in.

What wheel material is most common on 1/2-13 threaded stem casters with steel wheels?

Semi-steel leads on 1/2-13 threaded stem casters with steel wheels, rated 300 to 350 lb per caster. Cast iron is next at 300 lb.

Sources

  • [S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.
  • [S2] Preferred Equipment casters and wheels quick guide PDF (prefeq.com): load sizing on one less caster, wheel types and floor notes.

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