Sia 1950 Siaspeed Sanding Disc – 6", 400 Grit, 81-Hole, FSC Paper Backing, Part #8443.7842.0400 (100/Box)

$78.79

6″ 400 grit Siaspeed disc with 81-hole pattern and paper backing. Ideal for intermediate sanding and primer prep. 100 per box. Part #8443.7842.0400

4 in stock (can be backordered)

Description

The Sia 1950 Siaspeed 6″ S-Performance Multi-Hole Sanding Discs in 400 grit (Part Number: 8443.7842.0400) are premium abrasives developed for high-efficiency surface preparation and fine sanding. Part of the trusted 1950 Siaspeed series, these discs offer a durable and flexible FSC-certified paper backing that adapts easily to contours and edges for consistent results across wood, metal, paint, and composite surfaces.

The 400 grit rating makes these discs ideal for intermediate sanding operations—perfect for smoothing repaired surfaces, preparing primer layers, or refining previous grit passes. They are coated with a stearate layer to resist loading and extend usable life, especially in dry sanding conditions.

An 81-hole pattern allows for superior dust extraction, maintaining a cleaner workspace and better visibility during sanding. Suitable for both wet and dry use, these discs are optimized for professional environments requiring speed, consistency, and cleanliness. Each box contains 100 discs.

Additional information

Weight 0.95 lbs
Dimensions 6.50 × 6.50 × 3.00 in
Part Number

8443.7842.0400

Brand

Sia

Model

Siaspeed 1950

Product Type

Sanding Disc

Grit

400

Disc Diameter

6" (150 mm)

Hole Pattern

81-Hole

Backing Type

FSC-Certified Paper

Abrasive Material

White Aluminum Oxide

Coating

Stearate

Application

Intermediate Sanding, Primer Smoothing, Surface Prep

Compatible Tools

Multi-hole Orbital and Random Orbital Sanders

Wet/Dry Use

Suitable for Wet and Dry Use

Industry Use

Automotive, Woodworking, Industrial Finishing

Packaging

100 Discs per Box