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Caster Parts and Accessories

These caster parts and accessories cover brackets, stems, adapters, axles, tee nuts, and related hardware that keep a caster mounted and rolling. Parts on this page are sized by stem diameter, plate hole, axle length, or thread. They are not sold with a page-level caster pound rating. When a yoke or frame listing shows a capacity, that number belongs to that SKU only. Start with the failure: bent stem, worn axle, loose tee nut, or missing brake kit, then pick the matching part. Expanding rubber stems fit round and square tubing. Threaded stems need the right insert or tee nut. Grip-ring stems need the matching socket. Top-plate brackets need the bolt pattern that matches your frame. Measure the old part before you order so the replacement seats tight. Sizes below are per part as each listing states. Axle bolts: caster axles and lock nuts. Tee nuts and sockets: caster tee nuts and sockets.

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13 types

Wheel = wheel diameter · capacity is per caster.

Caster Parts and Accessories: buying guide

Caster parts and accessories for repair and mounting: swivel and rigid yokes, axles, bearings, spanner bushings, expanding stem adapters, sockets, tee nuts, mounting kits, floor truck locks, plate shims and swivel locks.

Yokes 350 to 1,250 lbAxles 5/16 to 3/4 inStem adapters and socketsFloor locks and shims

Shop by Type

Failure to part map

What failed Part to shop Measure
Worn tread / flat spot Replacement wheel Diameter, tread width, bore, hub length
Seized or noisy bearing Bearing or full wheel ID, OD, width
Bent fork / cracked yoke Swivel or rigid yoke / frame Plate size, wheel width, overall height
Stripped wood leg Tee nut or wood socket Stem diameter and thread
Hollow tube leg Expanding rubber adapter Tube inside diameter and stem size
Loose axle Axle bolt and lock nut Diameter and length past the hub
Cart rolls when parked Floor truck lock Plate pattern and deck height

Admin assortment buckets for parts-accessories, pulled October 26, 2026 [S1].

What is stocked here

  • Expanding rubber adapters for tube legs (about 3/4 to 1-7/8 in ID kits)
  • Tee nuts and a Shepherd wood socket
  • Axles and nuts (zinc and stainless), bearings, spanner bushings, washers
  • Swivel and rigid yokes / frames on common plates (2-3/8 x 3-5/8 and 4 x 4-1/2 in)
  • Weld-on and bolt-on plate shims; mounting hardware kits
  • Kickbar floor truck locks; Shepherd threaded leveling glides

Parts questions

How do I size an expanding adapter?

Measure the inside diameter of the tube and the stem diameter and length on the caster. Pick the adapter kit that expands into that tube ID and accepts that stem.

Do parts have load ratings?

Hardware (adapters, nuts, bushings) is sized by fit, not by a caster-style pound rating. When a yoke, frame, or mixed-in caster prints a capacity, that rating applies to that SKU only.

Sources

  • [S1] CasterHQ Admin products for parts-accessories, pulled October 26, 2026 (100 ACTIVE of 107).
  • [S2] Caster Connection Parts & Accessories and Expanding Adapter Stem education pages.
  • [S3] GSC 28d audit 2026-10-19: wheel bracket / caster brackets query cluster.

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