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4-Inch Fiber Backing Coarse Grit Aluminum Oxide Sanding Discs, Pkg Qty 250

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Industrial · SKU: AA4356761

4-Inch Fiber Backing Coarse Grit Aluminum Oxide Sanding Discs, Pkg Qty 250

This 4-inch depressed center sanding disc is engineered for heavy-duty stock removal on metal and wood surfaces.

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$129.99
$0.52/each(250 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$129.99
11 - 50-5%$123.49
51+-10%$116.99
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Quick Answer

How Buyers Should Evaluate 4-Inch Fiber Backing Coarse Grit Aluminum Oxide Sanding Discs, Pkg Qty 250

This 4-inch depressed center sanding disc is engineered for heavy-duty stock removal on metal and wood surfaces. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • Abrasive Grade: 24
  • Abrasive Grit: Coarse
  • Backing Material Type: Fiber

Purchase Details

  • Online price starts at $129.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 250 / Each.
  • Lead time: 2-3 weeks.

Use RFQ When

  • Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
  • Request support when fit, material, or substitute selection needs confirmation before order.
  • Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.

Technical Specifications

Abrasive Grade24
Abrasive GritCoarse
Backing Material TypeFiber
Abrasive MaterialAluminum Oxide
Disc Diameter3.94 in
Attachment TypeDepressed Center
Grit24
Product Details

Full Description

Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.

Overview

This 4-inch depressed center sanding disc is engineered for aggressive stock removal in demanding industrial and workshop environments. Utilizing a coarse 24-grit aluminum oxide abrasive, it delivers rapid cutting action on a wide range of materials, including metal, wood, and composites. The reinforced fiber backing provides exceptional durability and resistance to tearing, even under high-pressure applications and on uneven surfaces. Designed for compatibility with standard 5/8-inch-11 threaded angle grinders, this disc is a reliable solution for high-volume fabrication, weld preparation, and surface conditioning tasks.

Key Features

Coarse 24-grit aluminum oxide abrasive for fast material removal Reinforced fiber backing for superior strength and tear resistance Depressed center design allows for secure attachment and efficient debris clearance Engineered for high-speed operation on angle grinders Consistent performance across the entire disc surface for uniform finish Ideal for heavy-duty grinding and blending applications

Specifications

Abrasive Material: Aluminum Oxide Abrasive Grade: 24 Grit Classification: Coarse Disc Diameter: 3.94 inches Backing Material Type: Reinforced Fiber Attachment Type: Depressed Center Arbor Hole: 5/8-inch-11 thread Package Quantity: 250 discs

Applications

Weld seam blending and smoothing in metal fabrication Heavy stock removal on steel, aluminum, and other metals Rapid surface leveling and conditioning on wood and composites Preparing surfaces for painting, coating, or further finishing General grinding and deburring in maintenance, repair, and operations (MRO) Construction and automotive repair work requiring aggressive material removal

Frequently Asked Questions

What are the exact specifications of this sanding disc, and is it compatible with my standard 4-inch grinder?
This disc has a 3.94-inch diameter with a 5/8-inch (16mm) depressed center arbor hole, making it compatible with most standard 4-inch angle grinders. It is a coarse 24-grit aluminum oxide disc on a durable fiber backing, designed for aggressive material removal.
What are the primary applications for this coarse 24-grit sanding disc?
This disc is ideal for heavy-duty stock removal, weld blending, and leveling uneven surfaces on metals like steel and aluminum. Its coarse grit and fiber backing make it suitable for demanding tasks in fabrication, metalworking, and construction.
How are these discs packaged for order, and what is the shelf life?
The discs are packaged in a bulk box of 250 pieces. When stored in a cool, dry environment away from direct moisture, they have an indefinite shelf life, ensuring long-term performance and value.
4-Inch Fiber Backing Coarse Grit Aluminum Oxide Sanding Discs, Pkg Qty 250 | Machrio