3-1/8" x 4-1/8" Zinc Plated Bolt-On Top Plate/Shim for Easy Caster Installation CasterHQ

3-1/8" x 4-1/8" Bolt-On Top Plate Shim Zinc Plated | CasterHQ

Wheel

3-1/8" x 4-1/8"

Plate Size

3-1/8" x 4-1/8"

Full specs Spec sheet (PDF)

$10.00 USD

Save 30%+ vs big-box distributors

In Stock · Ships 1-2 Business Days

✉️ Email a Caster Solutions Expert (Mon–Fri 8–5 CST)

PO Net 30 ACH Tax-Exempt

Business Purchasing

Purchase orders accepted for approved accounts
Net 30 terms for qualified businesses
ACH, credit card, and tax-exempt ordering
Bulk and contract pricing on fleet quantities

Upload a PO / Quote·Request bulk pricing·844-439-4335

Not sure this is the right spec? Jordan (Founder) and Bob (45+ years in casters) review applications before you order.

Call now

Product Overview

At a glance

Wheel3-1/8" × 4-1/8"

MountPlate — 3-1/8" x 4-1/8"

Streamline Your Equipment Upgrades: 3-1/8" x 4-1/8" Bolt-On Top Plate/Shim Guide

Maximize your equipment's functionality with our 3-1/8" x 4-1/8" Bolt-On Top Plate/Shim - PART# WTP-318418-ZP. Designed for efficiency and ease of use, this top plate/shim simplifies attaching or replacing casters. There is no need for complex welding or cutting—bolt on the new casters, and your equipment is ready to move.

Critical Features for Your Projects:

Efficient Caster Replacement: Easily attach new casters without the hassle, saving you time and effort.
Adjust Height with Ease: Perfect for tweaking the height of your equipment to ensure smooth operation.
Built to Last: With a thickness of 0.15", it's made for durability and long-term use.
Flexible Fit: Accommodates bolt sizes up to 3/8", with slotted hole spacing for easy adjustment.

Whether upgrading your workspace tools or ensuring your home projects run smoothly, our 3-1/8" x 4-1/8" Bolt-On Top Plate/Shim provides the necessary reliability and flexibility. It's an essential tool for anyone looking to improve their equipment's mobility and stability.

Key Features

Easy Installation: Bolt-on design for quick caster changes.
Durable Material: High-quality steel ensures long-lasting use.
Flexible Adjustments: Slotted hole spacing for versatile mounting options.
Unplated for Welding: Safe for welding, free from harmful coatings.

Ordering & Shipping Information

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

Purchase orders — accepted from approved accounts

Net 30 terms — available on approved credit

ACH & all major cards — Visa, MC, Amex, Discover

Tax-exempt — submit your resale/exemption certificate

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.

Typical transit times after shipment

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.

Need an exact freight quote or blanket PO?

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.

3-1/8" x 4-1/8" Bolt-On Top Plate Shim Zinc Plated WTP-318418-ZP | CasterHQ

$10.00

Technical Specifications

Dimensions & Mounting
Wheel Diameter	3-1/8"
Wheel Tread Width	4-1/8"
Plate Size	3-1/8" x 4-1/8"
Bolt Hole Pattern	1-3/4" x 2-15/16" slotted to 2-3/8" x 3-3/8"
Mount Style	Plate
Materials & Finish
Frame Material	Zinc Plated Steel

Fitment & Interchange

MountPlate

Plate Size3-1/8" x 4-1/8"

Bolt Pattern1-3/4" x 2-15/16" slotted to 2-3/8" x 3-3/8"

Slotted holes — fits multiple bolt patterns, ideal for retrofits

Replacing an existing caster? Match the bolt pattern first, then wheel size · more 3-1/8" x 4-1/8" plate casters →

Documentation

Spec sheet (PDF) 30-day pricing honored Request STEP / CAD fileour engineers email it same day Caster selection guide Caster University Fleet & contract pricing Net 30 available

30-day returns · manufacturer warranty · spec support: 844-439-4335 (Mon–Fri 8–5 CST)

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