Welding Crayons | McMaster-Carr

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96 Products

Temperature Crayons

Quickly apply temperature markings without the mess of a liquid. Marks melt when the surface heats to the temperature point for easy visual inspection.

Temp. Points, ° F	Accuracy	Dia.	Lg.	Holder Material	Indicator Use		Each
104	±1%	3/8"	5"	Aluminum	One Time	00000000	000000
109	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
119	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
125	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
140	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
150	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
158	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
169	±1%	3/8"	5"	Aluminum	One Time	000000	00000
175	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
188	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
194	±1%	3/8"	5"	Aluminum	One Time	000000	00000
200	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
206	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
213	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
219	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
225	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
239	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
250	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
256	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
263	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
275	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
288	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
300	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
313	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
325	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
338	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
344	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
350	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
363	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
375	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
388	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
400	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
413	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
425	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
437	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
450	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
463	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
475	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
488	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
500	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
518	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
525	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
550	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
575	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
600	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
650	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
700	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
750	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
800	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
850	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
900	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
932	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
950	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,000	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,022	±1%	3/8"	5"	Aluminum	One Time	00000000	00000
1,050	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,100	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,150	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,200	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,250	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,300	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,400	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,450	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,500	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,550	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,600	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,650	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,700	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,800	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,900	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
1,950	±1%	3/8"	5"	Aluminum	One Time	0000000	00000
2,000	±1%	3/8"	5"	Aluminum	One Time	0000000	00000

Paint Crayons


Crayon with Holder (Sold Separately)

These paint crayons work well even on dirty, rusty, and oily surfaces.

	Drying Time	For Use On	Application Temp., ° F	Environment	Choose a Color		Each
Ultra-Bold Tip



	13	5 min.	Glass, Metal, Plastic, Rubber	0 to 350	—	Red , White , Yellow	00000000	00000


	17	16 hr.	Glass, Metal, Plastic, Rubber	-50 to 150	Wet	Fluorescent Blue , Fluorescent Green , Fluorescent Orange , Fluorescent Red , Fluorescent Yellow	0000000	0000
	17	24 hr.	Glass, Metal, Plastic, Rubber	-50 to 150	Wet	Black , Blue , Brown , Green , Orange , Pink , Purple , Red , White , Yellow	0000000	0000

Holders

		Each
Aluminum Holder	0000000	000000

Temperature Crayon Assortments

Apply multiple temperature markings to workpieces, pipes, and equipment to visually identify a wide range of temperature changes. Marks melt when the surface heats to the temperature point. Assortments come in a plastic case.

No. of Crayons	Temp. Points, ° F	Accuracy	Dia.	Lg.	Each
10	125, 150, 175, 200, 225, 250, 275, 300, 325, 350	±1%	3/8"	5"	0000000
10	300, 350, 400, 450, 500, 550, 600, 650, 700, 750	±1%	3/8"	5"	000000
20	125, 150, 175, 200, 225, 250, 275, 300, 325, 350, 375, 400, 425, 450, 475, 500, 550, 600, 700, 800	±1%	3/8"	5"	000000

Rough Surface Wax Crayons


Crayon with Holder (Sold Separately)

Also known as lumber crayons, these work better on rough surfaces than our standard wax crayons. Use on concrete, metal, and wood. Marks won't smear or wash off with water, but can be wiped away with a dry cloth or sanding.

Tip Size	Stroke Wd., mm	Dia.	Lg.	For Use On	Application Temp., ° F	Environment	Choose a Color	Pkg. Qty.		Pkg.
Medium, Bold, Extra Bold, Ultra Bold	2 to 12.7	1/2"	4 1/2"	Concrete, Metal, Wood	-50 to 150	Outdoor	Black , Blue , Green , Orange , Red , White , Yellow	12	000000	000000

Holders

		Each
Aluminum Holder	0000000	000000

All-Graphite Pencils

These solid sticks of graphite write vivid lines on concrete, metal, and wood and can mark surfaces up to 1100° F without melting. Also known as lumber crayons.

Tip Size	Stroke Wd., mm	Dia.	Lg.	For Use On	Max. Temp., ° F	Environment	Color	Pkg. Qty.		Pkg.
Bold, Extra Bold, Medium, Ultra Bold	2 to 12.7	1/2"	4 1/2"	Concrete, Metal, Wood	1,100	Outdoor	Black	12	0000000	000000

Holders

		Each
Aluminum Holder	0000000	000000

Paint Crayons with Holder

These crayons come in a tube that makes it easier to write and keeps the crayon from drying out. They work well even on dirty, rusty, and oily surfaces.

	Drying Time, min.	For Use On	Application Temp., ° F	Includes	Choose a Color		Each
Ultra-Bold Tip



	13	10	Metal, Plastic, Rubber, Wood	20 to 390	One Twist-Feed Holder	Black , Blue , Green , Orange , Purple , Red , White , Yellow , Fluorescent Orange , Fluorescent Yellow	0000000	00000

Primer-Resistant Paint Crayons

Often used for structural steel parts or layout work, markings from these crayons show through oil- and solvent-based primer coatings. These paint crayons work well even on dirty, rusty, and oily surfaces.

	Drying Time, hr.	For Use On	Application Temp., ° F	Color		Each
Ultra-Bold Tip



	17	16	Metal	-50 to 150	Blue	0000000	00000

Holders

		Each
Aluminum Holder	0000000	000000

Rough Surface Paint Crayons

Write on concrete, forgings, castings, and other rough surfaces with these weather- and fade-resistant paint crayons. They also work well on dirty, rusty, and oily surfaces.

	Drying Time, hr.	For Use On	Application Temp., ° F	Environment	Choose a Color
Ultra-Bold Tip



	17	16	Concrete, Metal	-50 to 150	Outdoor	Black , White , Yellow	0000000

Holders

		Each
Aluminum Holder	0000000	000000

Wax Crayons


Crayon with Holder (Sold Separately)

Write on glass, metal, paper, and wood with marks that won't smear or wash off with water, but can be wiped away with a dry cloth or sanding.

Tip Size	Stroke Wd., mm	Dia.	Lg.	For Use On	Application Temp., ° F	Choose a Color	Pkg. Qty.		Pkg.
Medium, Bold, Extra Bold, Ultra Bold	2 to 14.3	9/16"	5"	Glass, Metal, Paper, Wood	40 to 212	Black , Blue , Red	12	000000	00000

Holders

		Each
Aluminum Holder	0000000	000000

Wax Crayons for Rubber


Crayon with Holder (Sold Separately)

Write on wet and cold rubber with marks that won't smear or wash off with water, but can be wiped away with a dry cloth or sanding.

Tip Size	Stroke Wd., mm	Dia.	Lg.	For Use On	Application Temp., ° F	Environment	Choose a Color	Pkg. Qty.		Pkg.
Medium, Bold, Extra Bold, Ultra Bold	2 to 12.7	1/2"	4 1/2"	Rubber	-20 to 130	Wet	White , Yellow	12	000000	000000

Holders

		Each
Aluminum Holder	0000000	000000

Heat Treating and Annealing Paint Crayons

Marks written at room temperature will hold up through heating and cooling processes. Use on welds, ingots, castings, forgings, and other metal surfaces. These paint crayons work well even on dirty, rusty, and oily surfaces.

	Drying Time, hr.	For Use On	Application Temp., ° F	Max. Temp., ° F	Choose a Color		Each
Ultra-Bold Tip



	17	16	Metal	-50 to 150	1,800	White	0000000	00000


	17	24	Metal	-50 to 150	1,600	Black , Red , White , Yellow	0000000	0000

Holders

		Each
Aluminum Holder	0000000	000000

Hot Surface Paint Crayons

Paint dries immediately when applied to heated metal and won't smear, char, discolor, or peel. These paint crayons work well even on dirty, rusty, and oily surfaces.

	Drying Time	For Use On	Application Temp., ° F	Max. Temp., ° F	Choose a Color		Each
Extra-Bold Tip



	9.5	Instant	Metal	230 to 1,100	1,100	Black , Blue , Red , White , Yellow	0000000	00000


	9.5	Instant	Metal	400 to 1,600	1,600	Black , Blue , Red , White , Yellow	0000000	0000

Holders

		Each
Wood Holder	0000000	00000

Mechanical Welders' Pencils

Write on oily, wet, and rusty metal surfaces in welding, metal layout, and metal fabrication applications.

Pencils									Replacement Lead
Tip Size	Stroke Wd., mm	For Use On	Application Temp. Range, ° F	Environment	Features	Color		Each	Pkg. Qty.		Pkg.
Medium	2	Metal	-20 to 150	Wet	Pocket Clip	Silver	000000	000000	6	000000	00000

Welders' Pencils

Write on oily, wet, and rusty metal surfaces in welding, metal layout, and metal fabrication applications.

Tip Size	Stroke Wd., mm	For Use On	Application Temp. Range, ° F	Environment	Color		Each
Medium	2	Metal	-20 to 150	Wet	Red	000000	00000
Medium	2	Metal	-20 to 150	Wet	Silver	000000	0000