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1/2"-13 Caster Mounting Hardware Kit — 64-Piece Set for 4 Casters | CasterHQ

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  • 50-99 units: 5% Off
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  • 200+ units: 15% Off
Status: In Stock
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PRODUCT CODE: 12CPMHCP16PE

Product Overview

What this kit is

A 64-piece, zinc-finish steel mounting kit that secures a set of 4 plate-mount casters to a 1/2"-13 bolt-pattern equipment frame. Includes 16 carriage bolts, 16 hex thread-cutting screws, 16 SAE flat washers, and 16 nylon-insert lock nuts. Engineered for industrial cart, dolly, tool-box, and material-handling applications where a 1/2" bolt diameter matches the caster top plate.

Kit Specifications

Pieces per kit 64 (16 of each component)
Mounts 4 plate-mount casters
Thread spec 1/2"-13 UNC
Bolt length 1"
Material Low-carbon steel
Finish Zinc plated
Bolt grade ASTM A307 Grade A (carriage bolts)
Nut type Grade 2 nylon-insert lock nut
Washer type SAE general-purpose flat washer
Application Indoor industrial; dry environments

What's Included (64 pieces total)

  • 16 × 1/2"-13 × 1" hex-slotted drive indented hex washer head Type F point thread-cutting screws, zinc finish, low-carbon steel — for self-tapping installation into thin-wall steel frames
  • 16 × 1/2"-13 × 1" round-head carriage bolts, zinc finish, ASTM A307 Grade A — for through-bolting to wood, fabricated steel, or pre-drilled equipment
  • 16 × 1/2" SAE general-purpose flat washers, zinc finish, low-carbon steel — for load distribution under the nut
  • 16 × 1/2"-13 nylon-insert lock nuts, zinc finish, Grade 2 — vibration-resistant retention

Which casters does this kit fit?

Fits any plate-mount caster with a 1/2" bolt-hole diameter — typically:

  • 2", 2-1/2", 3" wide casters with 4-1/2" × 6-1/4" or 5-1/4" × 7-1/4" or 6-1/4" × 6-1/2" top plates
  • Heavy-duty casters rated 1,500 lb to 7,000+ lb capacity per caster
  • Heavy-duty industrial, manufacturing, foundry, and warehouse equipment

For 4" × 4-1/2" plates with 3/8" bolt holes, use our 3/8"-16 kit.

Engineer Tip

If you're mounting to thin-gauge steel (≤14 ga.), the thread-cutting screws self-tap and skip the need to drill clearance holes. For wood platforms or fabricated steel ≥1/8" thick, use the carriage bolts with a square hole punched or drilled to 1/2" — the square shoulder seats and prevents bolt rotation while you tighten the lock nut.

Common Applications

  • Heavy-duty industrial casters with 4-1/2" × 6-1/4", 5-1/4" × 7-1/4", and larger plate sizes
  • Warehouse pallet movers, foundry carts, and heavy material-handling equipment
  • Manufacturing and fabrication shop bases supporting >1,500 lb per caster
  • Forged steel and ductile iron casters where 1/2" bolt holes are spec
  • Automotive OEM, aerospace tooling carts, and mil-spec applications

Frequently Asked Questions

How many casters does one kit mount?
One kit (64 pieces) mounts a set of 4 plate-mount casters. For a 16-piece single (mounts 1 caster) alternative, see our 16-piece single (mounts 1 caster).
Will these bolts fit a different caster top plate size?
This kit is sized for 1/2" bolt-hole diameter, which matches caster plates listed above. For other plate sizes, choose the 5/16", 3/8", or 1/2" kit that matches your bolt-hole diameter.
Are these stainless?
No — these are zinc-plated low-carbon steel. For washdown, food-grade, marine, or chemical environments, request stainless 304 or 316 hardware via our quote desk.
What's the difference between the carriage bolts and the thread-cutting screws?
Carriage bolts pass through a pre-drilled or punched 1/2" hole and secure with a nut and washer on the back side — best for wood or steel where you have access to both sides. Thread-cutting screws self-tap into thin steel and only need access from the caster side. The kit ships both so you can choose the right method per installation.
Are these grade 5 or grade 8?
The carriage bolts are ASTM A307 Grade A (commercial grade, ~60 ksi tensile). For higher-load critical applications, request Grade 5 or Grade 8 via the quote desk.

Need stainless, Grade 5/8, or a custom thread spec?

Our procurement team sources upgraded hardware for OEM, MRO, and aerospace builds. Same-day quote.

Request a Custom Quote
Ordering & Shipping Information

Transparent pricing

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Upfront shipping costs

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We support bulk orders, repeat purchases, and fast quotes for larger or custom requirements.

Real support from product specialists

Need help confirming fit, compatibility, or application? Our team works directly with engineers, maintenance teams, and buyers every day.

Trusted by industrial and commercial customers

CasterHQ supplies casters and wheels for manufacturing, material handling, retail, and distribution environments nationwide.

  • Flat-rate shipping by order size. Final shipping cost shown before payment.
  • No post-checkout shipping adjustments or re-billing.
  • Most orders ship from our Texas headquarters near Dallas.

When will my order ship?

In-stock items typically ship same or next business day. Weekend orders ship Monday or Tuesday unless stated otherwise.

Will shipping cost more at checkout?

Shipping is not free on most orders. Your final shipping cost is shown before payment.

Typical transit times after shipment

Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas may take longer.

Made-to-order items (lead times)

Some custom products (select Made in USA casters, keyway wheels, drive wheels) are built after purchase and ship on a longer lead time. When applicable, the ship-time estimate is shown on the product page.

Need an exact freight quote for a large order?

Contact us before ordering and we’ll confirm total landed cost upfront. Contact us.

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1/2"-13 Caster Mounting Hardware Kit — 64-Piece Set for 4 Casters | CasterHQ

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