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381C Grinding Discs - General Purpose

Aluminum Oxide Abrasive Preferred Disc for Fiberglass Grinding

381C discs have an aluminum oxide abrasive on a tough, but flexible, fibre-backed disc.
 
This is 3M's value line of general purpose grinding dics.
 
 
A good performing disc for use on well-cured fiberglass, wood, and metals
 
300 Series aluminum oxide abrasives are mid-range abrasives with good performance
 
Closed coat makes these discs better suited for dense, non-loading substrates
 
Offered with traditional center hole mounting, as well as popular 5/8-11 TN quick change attachment versions
 
Priced by the box
 
 
User Tip Especially with coarser 36 and 24 grits, we recommend the use of an extra hard red ribbed backing plate for cooler running and prolonged disc life; see Related Products, below.
 
 
 
For higher performance discs, consider 3M's 785C (Cubitron and aluminum oxide blended abrasive) for aluminum, fiberglass, or stainless steel, and 501C (aluminum zirconia abrasive) for carbon steel; see Related Products, below.
Leaves warehouse: Next business day
(if in stock)

Shipping time: see chart

Made to order: No

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Current inventory as of Monday, 12:30 pm Pacific time
Item Our SKU
Mfg P/N
Specs Status Price Quantity
4 in. x 5/8 in. Hole 381C Grinding Disc - 36 Grit (25)
SKU 13024

Mfg p/n 051144-01725
Attachment System: 5/8" Hole
Disc Diameter: 4"
Grit: 36
Max. RPM: 15,000 rpm
Per Box: 25
1 in stock$33.59
7 in. x 7/8 in. Hole 381C Grinding Disc - 80 Grit (25)
SKU 13034

Mfg p/n 051144-01740
Attachment System: 7/8" Hole
Disc Diameter: 7"
Grit: 80
Max. RPM: 8,600 rpm
Per Box: 25
2 in stock$40.42
4 in. x 5/8 in. Hole 381C Grinding Disc - 80 Grit (25)
SKU 132430

Mfg p/n 051144-01722
Attachment System: 5/8" Hole
Disc Diameter: 4"
Grit: 80
Max. RPM: 15,000 rpm
Per Box: 25
Out of Stock$28.32
5 in. x 7/8 in. Hole 381C Grinding Disc - 60 Grit (25)
SKU 37755

Mfg p/n 051144-01727
Attachment System: 7/8" Hole
Disc Diameter: 5"
Grit: 60
Max. RPM: 12,000 rpm
Per Box: 25
3 in stock$33.12
5 in. x 7/8 in. Hole 381C Grinding Disc - 120 Grit (25)
SKU 39270

Mfg p/n 051144-20052
Attachment System: 7/8" Hole
Disc Diameter: 5"
Grit: 120
Max. RPM: 12,000 rpm
Per Box: 25
Out of Stock$31.20
4 in. x 5/8 in. Hole 381C Grinding Disc - 24 Grit (25)
SKU 95417

Mfg p/n 051144-81368
Attachment System: 5/8" Hole
Disc Diameter: 4"
Grit: 24
Max. RPM: 15,000 rpm
Per Box: 25
1 in stock$241.20
7 in. x 7/8 in. Hole 381C Grinding Disc - 16 Grit (25)
SKU 378575

Mfg p/n 051144-01745
Attachment System: 7/8" Hole
Disc Diameter: 7"
Grit: 16
Max. RPM: 8,600 rpm
Per Box: 25
1 in stock$60.45
7 in. x 7/8 in. Hole 381C Grinding Disc - 120 Grit (25)
SKU 13030

Mfg p/n 051144-01738
Attachment System: 7/8" Hole
Disc Diameter: 7"
Grit: 120
Max. RPM: 8,600 rpm
Per Box: 25
7 in stock$38.39
7 in. x 7/8 in. Hole 381C Grinding Disc - 60 Grit (25)
SKU 214427

Mfg p/n 051144-01741
Attachment System: 7/8" Hole
Disc Diameter: 7"
Grit: 60
Max. RPM: 8,600 rpm
Per Box: 25
6 in stock$40.55
5 in. x 7/8 in. Hole 381C Grinding Disc - 80 Grit (25)
SKU 37765

Mfg p/n 051144-20054
Attachment System: 7/8" Hole
Disc Diameter: 5"
Grit: 80
Max. RPM: 12,000 rpm
Per Box: 25
Out of Stock$25.85
5 in. x 7/8 in. Hole 381C Grinding Disc - 16 Grit (100)
SKU 378572

Mfg p/n 051144-21989
Attachment System: 7/8" Hole
Disc Diameter: 5"
Grit: 16
Max. RPM: 12,000 rpm
Per Box: 100
2 in stock$95.76
7 in. x TN 381C Grinding Disc - 80C Grit (100)
Image
SKU 385833

Mfg p/n 051125-63791
Attachment System: TN
Disc Diameter: 7"
Grit: 80C
Max. RPM:
Per Box: 100
Out of Stock$1.57
7 in. x TN 381C Grinding Disc - 120C Grit (100)
Image
SKU 385834

Mfg p/n 051125-63793
Attachment System: TN
Disc Diameter: 7"
Grit: 120C
Max. RPM:
Per Box: 100
Out of Stock$1.57
5 in. x 7/8 in. Hole 381C Grinding Disc - 24 Grit (25)
SKU 378573

Mfg p/n 051144-81369
Attachment System: 7/8" Hole
Disc Diameter: 5"
Grit: 24
Max. RPM: 12,000 rpm
Per Box: 25
1 in stock$34.08
7 in. x 7/8 in. Hole 381C Grinding Disc - 24 Grit (25)
SKU 378576

Mfg p/n 051144-81370
Attachment System: 7/8" Hole
Disc Diameter: 7"
Grit: 24
Max. RPM: 8,600 rpm
Per Box: 25
Out of Stock$43.35
5 in. x 7/8 in. Hole 381C Grinding Disc - 36 Grit (25)
SKU 378574

Mfg p/n 051144-81372
Attachment System: 7/8" Hole
Disc Diameter: 5"
Grit: 36
Max. RPM: 12,000 rpm
Per Box: 25
6 in stock$31.02
7 in. x 7/8 in. Hole 381C Grinding Disc - 36 Grit (25)
SKU 368433

Mfg p/n 051144-81373
Attachment System: 7/8" Hole
Disc Diameter: 7"
Grit: 36
Max. RPM: 8,600 rpm
Per Box: 25
4 in stock$45.73

 
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