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Select all	Attribute	Value
	Brand	3M
	Sub Type	Type 27 and Type 29
	Disc Diameter	150mm
	Product Type	Flap Disc
	Abrasive Material	Aluminium Oxide
	Grit Size	20
	Grade	120
	Standards/Approvals	No
	Series	769F

Datasheet - 7100239224

RoHS Status: Exempt

COO (Country of Origin):: PL

3M 769F Series Flap Disc, 150mm Disc Diameter, 120 Grit size - 7100239224

This flap disc is an abrasive finishing product designed for medium to high unit-pressure grinding on carbon steel, stainless steel and nickel/chromium alloys in industrial settings. It is intended for use on guarded powered tools and offers a balance of material removal and surface refinement for fabrication and maintenance tasks.

Features & Benefits

• Aluminium oxide and PSG mineral blend increases cut rate and life
• Resin bond maintains abrasive integrity under heavy use
• Polyester Y-weight backing provides stable wheel support
• Fibreglass hub construction enhances rotational stability
• Available in multiple grades to suit finishing needs

Applications

• Suitable for weld blending on steel fabrications
• Ideal for surface preparation before coating or bonding
• Used for burr removal on machined components
• Can be used for deburring and finishing stainless assemblies
• Suitable for repetitive grinding in production lines

What backing and hub construction does it use?

It uses a polyester Y-weight backing together with a fibreglass hub to deliver a stable support structure and improved wheel rigidity during abrasive operations.

Which abrasive minerals are incorporated and why?

A blend of aluminium oxide and a precision-shaped ceramic grain is used to balance material removal with abrasive longevity across mixed metals.

How should the product be stored to preserve performance?

Store in original packaging at 16°C to 26°C and 35 to 50% relative humidity on a first-in, first-out basis

exposure to high heat or humidity may reduce useful life.

What form factors and attachment styles are available?

It is supplied as Type 27 and Type 29 flap discs with a centre hole attachment for fitting to guarded grinders.

How are the performance grades supplied for different finishes?

Multiple grades are offered, including finer and coarser options to match tasks from aggressive stock removal to final blending.

3M 769F Aluminium Oxide Type 27 and Type 29, 150 mm, 120 Grade, 20 Grit 20 Per Pack