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Abrasives

3M abrasives for composite sanding, surface conditioning, deburring, and finishing in aerospace manufacturing and MRO. Cubitron™ II precision-shaped grain technology and Scotch-Brite™ nonwoven products for every step of the process.

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Coast-Line stocks 3M’s aerospace-grade abrasive lineup — from Cubitron™ II Precision-Shaped Grain sanding discs for composite stock removal to Scotch-Brite™ nonwoven surface conditioning products for prep, blending, and finishing. Whether you’re sanding a carbon fiber repair, prepping a bond surface, or doing final finishing on an aluminum structure, we carry the right grit, grade, and form factor. 

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Tell us what you need and our team will respond within one business day with pricing and availability.

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01

Sanding Discs

3M · Cubitron™ II
3M™ Cubitron™ II Hookit™ Clean Sanding Film Disc 775L
The benchmark for aerospace composite sanding. Features 3M Precision-Shaped Grain — triangular ceramic mineral that slices rather than gouges, cutting up to 2× faster and lasting up to 6× longer than conventional abrasives. Film backing provides greater tear resistance than paper. Multi-hole pattern evacuates dust at a high rate — no hole alignment needed. Load-resistant coating prevents clogging on composites, paint, and gelcoat. Hook-and-loop (Hookit™) attachment for fast, clean disc changes. For best results, pair with 3M™ Elite Random Orbital Sanders.
Composite Sanding Precision-Shaped Grain Cuts 2× Faster Film Backing Hookit™
Available Grits & Sizes
Grits80+, 120+, 150+, 180+, 220+, 320+
Sizes5" and 6" diameter
Backing3 MIL film
AttachmentHookit™ (hook-and-loop)
Pack Size50 discs/inner
3M · Cubitron™ II
3M™ Cubitron™ II Hookit™ Cloth Disc 726A
Ceramic abrasive on a YF-weight cloth backing. Higher durability and conformability than film discs for more aggressive sanding applications on composites and metals. Hookit™ hook-and-loop attachment for rapid changeovers. Available in a wide grit range from 60+ through 320+.
Ceramic Abrasive Cloth Backing · YF-weight 60+ to 320+ Grit 5" & 6"
3M · Cubitron™ II
3M™ Cubitron™ II Stikit™ Cloth Disc 726A
Same Cubitron™ II Precision-Shaped Grain on a cloth backing, with pressure-sensitive adhesive (Stikit™) attachment. Ideal where adhesive-backed discs are preferred. Consistent grit-to-grit performance for high-quality sanding results on composites and metallic substrates.
Stikit™ PSA Cloth Backing 60+ to 320+ Grit 5" Diameter
3M · Purple
3M™ Hookit™ Purple Finishing Film Abrasive Disc 260L
Conformable film disc for final sanding and finish steps, reducing pigtails and extending abrasive life. Designed for polishing to finish on aerospace structures and composite repairs. Produces a fine, consistent scratch pattern ideal as the final step before priming or painting.
Finish Sanding Purple Film Reduces Pigtails Pre-Paint Prep
3M · Cubitron™ II
3M™ Cubitron™ II Hookit™ Cloth Disc 784F
Heavy-duty YF-weight cloth disc for aggressive sanding and stock removal on composite and metallic parts. Ceramic Precision-Shaped Grain for maximum cut rate and long life. Available in 80+ grit. 5" diameter, 25 discs per carton.
Heavy Duty YF-weight Cloth 80+ Grit 5"
Grit Selection Guide — Composite & Aerospace Applications
36 – 60
Heavy material removal, shaping, scarfing repairs
80 – 120
General sanding, surface leveling, composite layup prep
150 – 220
Intermediate sanding, scuff sanding for adhesion, paint prep
320 – 400+
Final finishing, pre-primer sanding, between coat sanding
02

Surface Conditioning Discs

3M · Scotch-Brite™
Scotch-Brite™ Roloc™ Surface Conditioning Disc (SC-DR)
Open-web nonwoven disc for blending, deburring, and finishing on composite and metal surfaces. Runs cool to prevent discoloration and warping. Load-resistant — open-web fibers stay clear of debris to maintain consistent cut rate throughout the disc's life. Available in Silicon Carbide (sharp, low-pressure — ideal for paint prep and finishing) or Aluminum Oxide (hard, high cut-rate for deburring). 3M™ Roloc™ quick-change attachment: twist off, twist on in seconds. Color-coded by grade for fast identification.
Surface Conditioning Nonwoven Roloc™ Quick-Change SiC or A/O 2" & 3"
Grade Options
CoarseAggressive deburring
MediumBlending, general surface prep
FineLight blending, pre-paint
Very FineFinal surface conditioning
Super FineFinal finish before coating
3M · Scotch-Brite™
Scotch-Brite™ Roloc™ AL Surface Conditioning Disc
Optimized for low-to-medium pressure applications where loading resistance is critical. Open-web construction responds to surface irregularities and contours, minimizing the risk of gouging. A reliable choice for aerospace aluminum prep and composite scuffing.
Low-Medium Pressure Load Resistant Aluminum & Composites Roloc™
3M · Scotch-Brite™
Scotch-Brite™ EXL Unitized Wheel
Unitized nonwoven wheel for deburring and finishing on ferrous and non-ferrous metals. Available in a variety of grades, sizes, and densities. Provides consistent finish throughout the wheel's life — unlike coated abrasives that change behavior as they wear down.

Unitized Wheel Deburring & Finishing Ferrous & Non-Ferrous
3M · Scotch-Brite™
Scotch-Brite™ SR Radial Bristle Disc
Designed for sealant removal without compromising paint or metal surfaces. Attaches to the 3M™ Unitized Wheel Mandrel 990. Commonly used after the 3M™ SR Cutter removes the bulk of sealant — the bristle disc provides a thorough, gentle clean-out of residual material from channels and seams.
Sealant Removal Radial Bristle Non-Damaging MRO
03

Hand Pads

3M · Scotch-Brite™
Scotch-Brite™ Production Hand Pad 8447 (Maroon — Very Fine)
Industry-standard maroon hand pad for final surface scuffing, cleaning, and very fine finishing. Aluminum oxide abrasive in an open-web nonwoven construction. Flexible and conformable — works on flat and contoured surfaces. 6" × 9" pad, 20 per carton. Widely used for composite bond surface preparation in aerospace manufacturing and MRO.
Bond Surface Prep A/O Very Fine · Maroon 6" × 9" Nonwoven
3M · Scotch-Brite™
Scotch-Brite™ Heavy Duty Hand Pad 7440 (Tan — Medium)
General-purpose aluminum oxide hand pad for medium-grade cleaning, scuffing, and surface conditioning. Open-web fiber construction runs cool and resists loading. 6" × 9" pad. A workhorse pad for composite and metal shop floor applications requiring moderate abrasion.
A/O Medium · Tan 6" × 9" Heavy Duty Nonwoven
3M · Scotch-Brite™
Scotch-Brite™ Star Abrasive
Uniquely shaped abrasive that flexes and conforms to sanding areas like boreholes, inside diameters, channels, and other confined access areas impossible to reach with standard discs or pads. Ideal for deburring and surface conditioning in tight interior geometry on aerospace assemblies.
Star Shape Inside Diameters Boreholes & Channels Conformable
04

Sheets & Rolls

3M · Green Corps™
3M™ Green Corps™ Stikit™ Production™ Sheet
Pressure-sensitive adhesive sanding sheet for production sanding applications. Long-board format (2¾" × 16½") optimized for hand-blocking large flat surfaces on composite panels and structural components. 80 grit for efficient material removal and leveling. 100 sheets per carton. Attaches cleanly to foam or rubber hand blocks — no slippage during use.
Production Sanding PSA Attachment 80 Grit 2¾" × 16½"
Backed Abrasive Formats
PaperEconomy; flat surfaces
FilmTear resistant; fine finishing
ClothConformable; durable
PSAAdheres to block/pad
Hook & LoopFast change, reusable
3M
3M™ Flexible Diamond Abrasive Belt 6454J
Diamond abrasive on a flexible backing for precision grinding of hard materials including carbon fiber composites, ceramics, and hardened metals. Weldlock seam for smooth, consistent operation. Available in M40 micron pattern. Long belt life even on the hardest aerospace substrates.
Diamond Abrasive Flexible Belt Hard Composites Weldlock Seam
3M · Scotch-Brite™
Scotch-Brite™ Nonwoven Abrasive Belts
Full line of nonwoven belts for deburring, sanding, blending, finishing, and polishing. Range of grades and backings available. Run cool compared to coated abrasive belts — reduces risk of heat damage to temperature-sensitive composite laminates and bonded structures.



Nonwoven Belts Cool Running Multiple Grades
05

Specialty Abrasives

3M
3M™ Roto Peen Flap Assembly
Portable flap peening system for precision rework on metal substrates. Used for small-area repair, manufacturing, and peening holes. An alternative to media blasting for relieving metal fatigue in aerospace MRO. Provides consistent, controlled peening pressure for predictable surface treatment results.

MRO Peening Fatigue Relief Portable Precision Rework
3M
3M™ General Purpose Sanding Sponge
Flexible foam sanding block for hand sanding contoured surfaces, radii, and complex geometry where flat sanding sheets would bridge and miss material. Medium grit. 3¾" × 2⅝" × 1" block format. Available in multi-packs for shop floor use.


Foam Sanding Block Contoured Surfaces Medium Grit Hand Sanding
3M
3M™ Flexible Diamond QRS Cloth Sheet 6022J
Diamond abrasive on a quick-release system (QRS) cloth sheet for precision hand sanding and finishing of extremely hard materials. M300 micron pattern, Pattern 21. For carbon fiber trimming, edge finishing, and preparing bonded composite assemblies where conventional abrasives wear too quickly.
Diamond QRS M300 Micron Edge Finishing Carbon Fiber
3M · Scotch-Brite™
Scotch-Brite™ Deburr & Finish PRO Flap Brush
High-performance flap brush combining nonwoven abrasive flaps with a fiber core for aggressive deburring and consistent finishing simultaneously. Medium+ grade. 8" × 1½" × 3" format for bench grinder or stationary machine use. Excellent for edge finishing on composite and metal aerospace parts.
Deburr + Finish Flap Brush 6C Medium+ Bench Grinder
3M
3M™ Stripping Pads
Available in moderate and heavy-duty versions for removing coatings, sealants, and adhesive residues from aerospace surfaces without damaging the substrate. 3¾" × 6" format. The moderate version replaces 0 steel wool; the heavy-duty version provides more aggressive removal for stubborn coatings and corrosion products.
Coating Removal Moderate & Heavy Duty No Substrate Damage

Why Source Vacuum Bagging from Coast-Line?

Application Expertise

Our team can recommend the right abrasive for your specific process — composite sanding, bond prep, deburring, or MRO surface conditioning.

Genuine 3M Product

Authorized 3M distributor. Genuine product with full lot traceability — not grey market or counterfeit abrasives that fail to meet specs.

AS9120 Certified

Our distribution is AS9120-certified. Documentation packages available for quality-controlled aerospace programs requiring supplier qualification records.

Fast Response

Quote turnaround typically within one business day. Call us directly for urgent production line needs — we understand unplanned downtime costs money.

Source Airtech Through Coast-Line.

Whether you need a single roll of bagging film or a complete program kit, our team can supply the full Airtech portfolio with fast turnaround and US-based technical support.

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