Lapping Grains | McMaster-Carr

	Grit Grit

	For Finish For Finish

	Abrasive Grain Size Abrasive Grain Size

	For Use On For Use On

	Abrasive Material Abrasive Material

	Container Size Container Size

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Individual/Set Individual/Set

Individual

Set

	Diamond Type Diamond Type

82 Products

About Finishing

Mix with oil, grease, or water to create your own lapping compounds. Grit and microns are approximate.

			5 lbs. Jar
Abrasive Grain Size, microns	Grit (For Finish)	For Use On		Each
Aluminum Oxide
1,092	16 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
686	24 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
483	36 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
165	80 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
122	100 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
100	120 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
85	150 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
70	180 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
50	240 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
40	280 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
35	320 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
20	500 (Polished)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
18	600 (Polished)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
5	1200 (Polished)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
Silicon Carbide
1,092	16 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
254	60 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
165	80 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
122	100 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
100	120 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
85	150 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
70	180 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
60	220 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
50	240 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
40	280 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
35	320 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000
24	400 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
18	600 (Polished)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
10	800 (Polished)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000
8	1000 (Polished)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000

Timesaving Lapping Grains

The grains break down during use so they function first as an abrasive and then as a polish. Mix with oil to create your own lapping compounds. Grit and microns are approximate.

			1 lbs. Jar		5 lbs. Jar
Abrasive Grain Size, microns	Grit (For Finish)	For Use On		Each		Each
Silica
380	40 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	000000	0000000	0000000
165	80 (Rough)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000	0000000	000000
60	220 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000	0000000	000000
35	320 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Nickel	0000000	00000	0000000	000000

Timesaving Lapping Grain Assortments

The grains break down during use so they function first as an abrasive and then as a polish. Mix with oil to create your own lapping compounds. Grit and microns are approximate.

Silica
Includes		Each
3 oz. Can of Rough-Finish (600 Microns/40 Grit) Grains—Use on Steel, Stainless Steel, Titanium, Iron, and Nickel 3 oz. Can of Rough-Finish (165 Microns/80 Grit) Grains—Use on Aluminum, Brass, Bronze, and Copper 3 oz. Can of Rough-Finish (165 Microns/80 Grit) Grains—Use on Steel, Stainless Steel, Titanium, Iron, and Nickel 3 oz. Can of Smooth-Finish (100 Microns/120 Grit) Grains—Use on Aluminum, Brass, Bronze, and Copper 3 oz. Can of Smooth-Finish (60 Microns/220 Grit) Grains—Use on Aluminum, Brass, Bronze, and Copper 3 oz. Can of Smooth-Finish (60 Microns/220 Grit) Grains—Use on Steel, Stainless Steel, Titanium, Iron, and Nickel 3 oz. Can of Extra-Smooth-Finish (35 Microns/320 Grit) Grains—Use on Aluminum, Brass, Bronze, and Copper 3 oz. Can of Extra-Smooth-Finish (35 Microns/320 Grit) Grains—Use on Steel, Stainless Steel, Titanium, Iron, and Nickel	0000000	000000

Timesaving Lapping Grains for Aluminum and Soft Metals

The grains break down during use so they function first as an abrasive and then as a polish. Mix with oil to create your own lapping compounds. Grit and microns are approximate.

			1 lbs. Jar		5 lbs. Jar
Abrasive Grain Size, microns	Grit (For Finish)	For Use On		Each		Each
Silica
165	80 (Rough)	Aluminum, Brass, Bronze, Copper	0000000	000000	0000000	0000000
100	120 (Smooth)	Aluminum, Brass, Bronze, Copper	0000000	00000	0000000	000000
60	220 (Smooth)	Aluminum, Brass, Bronze, Copper	0000000	00000	0000000	000000
35	320 (Extra Smooth)	Aluminum, Brass, Bronze, Copper	0000000	00000	0000000	000000

Diamond Lapping Grains

Diamond cuts more quickly, lasts longer, and leaves a finer finish than other lapping grains. Mix with oil, grease, or water to create your own lapping compounds. Grit and microns are approximate.

Natural diamonds are sharper and cut faster than synthetic diamonds.

			10 g Jar		20 g Jar
Abrasive Grain Size, microns	Grit (For Finish)	For Use On		Each		Each
Synthetic Diamonds
60	220 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	000000	00000000	0000000
40	280 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
20	500 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
12	800 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
8	1000 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
4	1400 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
2	1800 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
1	2000 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
0.5	2500 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
Natural Diamonds
60	220 (Smooth)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
40	280 (Extra Smooth)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
20	500 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
12	800 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
8	1000 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
4	1400 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
2	1800 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
1	2000 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000
0.5	2500 (Polished)	Steel, Stainless Steel, Titanium, Iron, Aluminum, Brass, Bronze, Copper, Nickel, Glass, Plastic, Ceramic, Composites	00000000	00000	00000000	000000