Sia Abrasives 1950 Siaspeed Siafast Sanding Disc – 5 in., 400 Grit, 100 per Box
Sia Abrasives 1950 Siaspeed Siafast Sanding Disc – 5 in., 400 Grit, 100 per Box
The Sia Abrasives 1950 Siaspeed Siafast Sanding Disc is a 5 in. no-hole (NH) sanding disc in 400 grit, sold in a box of 100 and mounted with sia's siafast hook-and-loop attachment system.
Key Features
- 5 in. diameter, no-hole (NH) design — no center vacuum-extraction port
- Siafast self-fastening hook-and-loop attachment
- 400 grit aluminum oxide grain, at the top of sia's published 100–400 aluminum-oxide grit band for this series
- Open-coat electrostatic grain application
- FSC-certified paper backing with a resin-over-resin bond, plus a stearate anti-loading coating
- 100 discs per box — sia's standard published pack for this article number
Who Is This For?
Fits shops running 5 in. hook-and-loop random-orbit or DA sanders that need a fine paper disc from the 1950 Siaspeed Siafast line for pre-finish work.
Frequently Asked Questions
How many discs are in this box?
100 discs — sia's standard published pack for this article number.
What grain does the 400 grit disc use?
Aluminum oxide — sia's published grain chart puts 400 at the top of the aluminum-oxide band for this series before it moves to white aluminum oxide at 500 and up.
Does this disc have a vacuum-extraction hole?
No. It is a no-hole (NH) disc, built for sanders without through-pad dust extraction.
Is the backing still paper at this grit?
Yes — sia's paper backing for this series covers grits 40 through 600.