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Norton Metal F240 Resin Fiber Grinding Disc, 4.5" x 7/8", Aluminum Oxide, image of box packaging and stack of discs displayed.
Norton Resin Fiber Discs, Metal F240, 4.5 Inch, top view.
Norton Resin Fiber Disc Metal F240, 5" x 7/8", Alum Oxide, side angle view.

Norton Metal F240 Resin Fiber Grinding Disc, 4.5" x 7/8", Aluminum Oxide

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Product Overview:

Norton Metal F240 4.5" x 7/8" Aluminum Oxide Resin Fiber Grinding Discs are armed with a versatile, multi‑purpose aluminum oxide abrasive to deliver consistent results in a variety of applications when you need to keep initial costs to a minimum.

Pair this handy disc with your right‑angle grinder or pistol‑grip air sander to bevel, blend, deburr, and remove stock from a wide range of materials, including aluminum, cast iron, titanium, super alloys, and 300‑ and 400‑series stainless. The full‑resin bond and heavy fiber backing provide strength, durability, and resistance to tearing.

These discs measure 4.5" in diameter with a 7/8" arbor hole. Available in 24, 36, 60, 80 and 120 grits. Sold 25 discs per pack.

Features and Benefits:

  • Versatile, multi‑purpose aluminum oxide abrasive provides consistent performance on numerous materials and small jobs
  • Heavier fiber backing for additional strength and tear resistance
  • Full resin bond for strength and durability
  • Excellent coarse grit choice for beveling, blending, deburring, and stock removal
  • Extra‑coarse 24 and 36 grits for aggressive stock removal and edge chamfering

Videos:

Specifications:

  • Abrasive: Aluminum Oxide
  • Abrasive Type: Coated
  • Backing Material: Fiber
  • Color: Brown
  • Arbor Hole Size: 7/8"
  • Diameter: 4.5"
  • Grits: 24, 36
  • Grade: Extra Coarse
  • Max Operating Speed: 11,000 RPM
  • Series: F240
  • Sub‑Brand: Metal
  • Tier: Good

SMSDistributors Expert Notes:

Norton Metal F240 resin fiber discs are a dependable, cost‑effective solution for heavy stock removal, beveling, blending, and deburring across a wide range of metals. These discs are the best choice for small jobs, applications where performance is not measured, and price sensitive operations. The aluminum oxide grain provides strong cutting performance at an economical price point, making these discs ideal for shops that need reliable results without the cost of premium ceramic abrasives.

The heavy fiber backing and full‑resin bond give the disc excellent strength and tear resistance, especially under high pressure or when working on edges. These discs perform well on aluminum, stainless steel, cast iron, titanium, and super alloys, making them a versatile choice for fabrication, repair, and general metalworking.

For coarse grinding, the 24 and 36 grits offer aggressive removal rates and fast beveling. Medium grits such as 50, 60, 80, and 120 provide smoother control and are useful for blending, refining edges, and preparing surfaces for finishing. Shops that perform both heavy grinding and intermediate blending may benefit from stocking a broader grit range.

Frequently Asked Questions

What are Norton Metal F240 resin fiber discs used for?

These discs are designed for heavy stock removal, beveling, blending, deburring, and edge chamfering on a wide range of metals. They are commonly used in fabrication shops, collision repair, manufacturing, and general metalworking.

Which metals can these discs grind effectively?

Norton F240 discs perform well on aluminum, cast iron, stainless steel (300 and 400 series), titanium, super alloys, brass, bronze, and soft carbon steels.

What tools are compatible with these discs?

They are designed for use with right‑angle grinders and pistol‑grip air sanders equipped with a 4.5" resin fiber backup pad and 7/8" arbor.

What grit should I choose?

  • 24 grit: Extra‑coarse stock removal, heavy grinding, fast beveling
  • 36 grit: Coarse grinding, edge shaping, aggressive deburring
  • 50–60 grit: Medium grinding, weld blending, refining bevels
  • 80–120 grit: Light grinding, surface preparation before finishing

Are these discs good for high‑pressure grinding?

Yes. The heavy fiber backing and full‑resin bond provide excellent durability and tear resistance, making them suitable for high‑pressure applications and edge grinding.

How long do these discs last?

Aluminum oxide resin fiber discs offer good life for general metalworking tasks. For extremely demanding applications or high‑volume grinding, ceramic fiber discs may provide longer life, but at a higher cost.

About SMSDistributors:

SMSDistributors.com is a direct supplier and stocking distributor of Norton Metal F240 resin fiber grinding discs, offering reliable aluminum oxide performance for fabrication, repair, and general metalworking. We proudly stock a wide range of Norton abrasives along with other leading brands including Indasa, Mirka, Sunmight, Sia, Surf‑ACE, Sandwox, and RUPES.

Our catalog includes sanding discs, resin fiber discs, long board abrasives, sanding rolls, polishing compounds, and professional‑grade surface preparation tools for automotive, marine, woodworking, and industrial applications. Whether you’re grinding, blending, sanding, or finishing, SMSDistributors provides trusted products, fast shipping, and expert support for shops of all sizes.

Category: Resin Fiber Grinding Discs (4.5-inch, Aluminum Oxide, Metalworking)