Flap & Fiber Discs
100+ products
Expected delivery: Wed, Nov 18
Flap discs and resin fiber discs run on angle grinders to remove weld beads, bevel edges, clean up mill scale and blend surfaces before paint. Flap discs are built from overlapping abrasive flaps on a backing plate, so fresh grain is exposed as they wear. Fiber discs are single-layer abrasive on a stiff fiber backing and need a backup pad. This section covers both in common 4-1/2", 5" and 7" sizes, in aluminum oxide, zirconia and ceramic grains, with 5/8"-11 threaded hubs on some styles.
What to check before you order
- Type 27 or Type 29. Type 27 discs are flat and work at a low angle for blending. Type 29 discs are conical and remove more material at a steeper angle.
- Grain. Zirconia is a durable choice for steel. Ceramic suits heavy pressure and stainless. Aluminum oxide is economical for light work.
- Grit. Coarse grits remove beads, and finer grits leave a surface ready for coating.
- Backing. Fiberglass backings are stiff and common. Some backings can be trimmed down as the flaps wear.
- Speed and fit. Confirm the arbor or hub and make sure the disc's maximum RPM meets or exceeds your grinder's speed.
Buying guide: Abrasive grit guide: which grit and disc type to use
Common questions
Do fiber discs need a backup pad?
Yes. Resin fiber discs must be mounted on a backup pad of the right size, held with a retaining nut.
Return to abrasives, or compare grinding and cut-off wheels and grinders and sanders.
Flap & Fiber Discs: page 4
- Norton Blaze Flap Disc 4-1/2 X7/8- 80 Grit SKU 547-66261183489 $12.06
- Norton Blaze Flap Disc 7 x 7/8-60 Grit SKU 547-66261183496 $22.97
- Norton Bluefire Flap Disc T29 P80 Grit R860 Za SKU 547-66254461173 $11.71
- Milwaukee Carbide Cutter 1-1/2" Quick Change Steel Plate SKU 495-49-57-8227 $89.04
- Milwaukee Carbide Cutter 1-3/8" Quick Change Steel Plate SKU 495-49-57-8223 $76.55
- 3M Cubitron Ii Fibre Disc 982C TN QC 4-1/2 in 80+ SKU 405-051141-27642 $6.53
- Norton Flap Disc 4-1/2 x 7/8 60G SKU 547-66254419984 $6.15
- Norton Flap Disc 4.5X5/8-11 60G SKU 547-07660703212 $11.68
- 3M Flap Disc 577F T29 Giant 4-1/2" x 7/8" 60 YF-WT SKU 405-051141-31005 $12.99
- Norton Flap Discs 5 x 7/8 R980TYPE 29 36 SKU 547-66261190001 $14.89
- Norton Flap WHL 6X1X2 S/C V Fine SKU 547-66261058450 $89.97
- Norton Flap WHL 8X1X3 a/O Fine SKU 547-66261058491 $119.73
- Merit Aluminum Oxide 1 X2 80 SKU 481-08834196268 $2.15
- Merit Aluminum Oxide 1-1/4 100 SKU 481-08834184291 $2.25
- Merit Aluminum Oxide 1/2X 2 120 SKU 481-08834196736 $1.85
- Merit Aluminum Oxide 3 X3 50 SKU 481-08834196253 $4.70
- Merit Aluminum Oxide 3/4X 2 36 SKU 481-08834196953 $2.16
- Merit Aluminum Oxide 4 60 SKU 481-08834184000 $3.95
- Merit Quick Change Holders 2 SKU 481-08834164624 $23.80
- Merit Silicon Carbide QC-T2 2 60 SKU 481-08834165254 $1.22
- Merit Silicon Carbide QC-T2 2 80 SKU 481-08834165255 $1.19
- Alfa Tool Quick Change Adaptor SDS Plus to Spline SKU QCA62296 $101.36
- 3M Red Abrasive Stikit Disc 01109 6" P320 Grade SKU 405-051131-01109 $65.32
- 3M Roloc Disc TSM 2" 60YF 777F SKU 405-051111-50253 $1.59
- Spiralcool SC F500-R Backing Pads SKU LS-00587117-5 $31.55
- Spiralcool SC F700-R Backing Pads SKU LS-00587116-9 $47.13
- Spiralcool SC F700SF-R Backing Pads SKU LS-00661238-0 $45.74
- Spiralcool SC H500-R Backing Pads SKU LS-00661212-2 $31.55
- Spiralcool SC H700-R Backing Pads SKU LS-00587119-1 $47.13
- Spiralcool SC R400SF-R Backing Pads SKU LS-00661224-9 $27.85
- Saint-Gobain Abrasives Shurstik Aluminum Oxideresin Cloth 12 50 SKU 481-08834173047 $129,998.70
- 3M Surface Conditioning Tnquick Change Disc Fine SKU 405-048011-18000 $6.64
- Norton TY27 Quick Trim Flap Disc 4-1/2 X7/8 R884P1 Nor SKU 547-66623399142 $8.93