3M™ Cloth Belt 384F, 220+ XF-weight, 2 in x 72 in, Film-lok, Single-flex, 5 ea/Case, Special Packaging

$7.62 / Each

SKU	7100405671
Legacy SKU	60440624116
UPC	00068060126665
Catalog Number	384F
Product Number	384F

3M Cloth Belt 384F is a general-purpose aluminum oxide cloth-backed belt recommended for metal deburring, general metalworking, and some woodworking applications. It is optimized for use on mild steel and carbon steel, and is also effective on softer metals like aluminum, bronze and brass.

General purpose belt delivers consistent, reliable performance on a wide range of substrates
Polyester waterproof backing holds up for wet and dry applications
XF-weight cloth backing withstands grinding and heavy sanding
Resin bond withstands high heat and pressure
Aluminum oxide abrasive mineral offers reliable performance and performs well on many substrates
Suitable for use on a backstand or benchtop belt sander and for stroke sanding, portable belt grinding, and wide belt grinding and finishing

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High-Quality Cloth Belt Materials

Durable

Versatile

Multi-Functional

Product Dimensions	Imperial	Metric
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Shipping Dimensions
Weight	1.475 lb
Length	13.8748 in
Width	13.8748 in
Height	2.3748 in

PRODUCT FAQ

What grit level is the 3M™ Cloth Belt 384F, and what does XF-weight mean?

The 3M™ Cloth Belt 384F comes in 220+ grit, which is a fine grit ideal for finishing and light sanding applications. XF-weight refers to the backing material—it's an extra-flex backing that provides excellent conformability and durability for curved or contoured surfaces.
What are the dimensions of this cloth belt, and will it fit my sander?

This belt measures 2 inches wide by 72 inches long, which is a standard size that fits most portable belt sanders and stationary belt sanding machines. I'd recommend checking your equipment's specifications to confirm compatibility.
What does "Film-lok" mean, and why is it important?

Film-lok is 3M's proprietary adhesive system that provides exceptional bonding between the abrasive mineral and the backing. This means the belt resists loading and maintains consistent performance throughout its lifespan, giving you better value and longer-lasting results.
Why does the product specify "Single-flex," and how does that benefit my work?

Single-flex means the belt is designed to flex in one direction, which provides stability and control during sanding while still offering the conformability you need for slightly curved surfaces. This gives you the best balance of performance and precision.
How many belts come in the special packaging, and is there a reason for that quantity?

You receive 5 cloth belts per case in special packaging designed for convenient storage and protection during shipping and handling. This quantity is perfect for shops that want to keep backup belts on hand without excessive inventory.

For industrial/occupational use only. Not for consumer sale or use.

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.

Consistent, Reliable Performance

The 3M Cloth Belt 384F is engineered to deliver dependable results through the combination of fast-cutting aluminum oxide abrasive grains that are securely resin-bonded to a robust XF-weight polyester cloth backing. This construction provides the sustained cutting action and extended service life that metalworking professionals require when tackling demanding material removal tasks. The closed coat design of the abrasive surface ensures a uniform, refined finish while facilitating the creation of controlled grain patterns on workpieces. Additionally, the waterproof backing material permits versatile use in both wet and dry working environments, expanding its applicability across various finishing scenarios.

Fast-Cutting Grain with Durable Construction

Aluminum oxide has established itself as the preferred abrasive mineral among industrial specialists, recognized for its excellent cutting efficiency, superior durability, and extended operational lifespan. This material demonstrates remarkable versatility, proving effective across a broad spectrum of applications in both woodworking and metalworking disciplines, with particular effectiveness on ferrous metal alloys. As the most widely utilized industrial abrasive globally, aluminum oxide delivers consistent results. The abrasive particles are firmly secured to the cloth substrate through resin bonding, establishing an exceptionally strong connection capable of enduring extreme temperatures and substantial mechanical pressures. These performance characteristics make the belt particularly well-suited for specialized applications including gate grinding operations, weld seam removal, edge deburring, and precision finishing work.

3M Engineered for Optimal Performance

3M's abrasives division brings extensive expertise in cloth belt design and manufacturing. With over a century of experience as a premier supplier to the metalworking and woodworking sectors, 3M has developed comprehensive solutions tailored to address the most challenging industrial requirements. The 3M Cloth Belt 384F represents the culmination of dedicated engineering efforts aimed at enhancing both cutting action and material longevity for superior performance in general-purpose sanding and grinding applications. This product exemplifies how 3M's scientific innovation delivers enhanced performance outcomes specifically designed for industrial operations.

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