Welding Crayons | McMaster-Carr

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98 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	3261K112	000000
109	±1%	3/8"	5"	Aluminum	One Time	3261K113	00000
119	±1%	3/8"	5"	Aluminum	One Time	3261K111	00000
125	±1%	3/8"	5"	Aluminum	One Time	3261K12	00000
140	±1%	3/8"	5"	Aluminum	One Time	3261K131	00000
150	±1%	3/8"	5"	Aluminum	One Time	3261K14	00000
158	±1%	3/8"	5"	Aluminum	One Time	3261K114	00000
169	±1%	3/8"	5"	Aluminum	One Time	3261K9	00000
175	±1%	3/8"	5"	Aluminum	One Time	3261K16	00000
188	±1%	3/8"	5"	Aluminum	One Time	3261K17	00000
194	±1%	3/8"	5"	Aluminum	One Time	3261K2	00000
200	±1%	3/8"	5"	Aluminum	One Time	3261K18	00000
206	±1%	3/8"	5"	Aluminum	One Time	3261K115	00000
213	±1%	3/8"	5"	Aluminum	One Time	3261K19	00000
219	±1%	3/8"	5"	Aluminum	One Time	3261K116	00000
225	±1%	3/8"	5"	Aluminum	One Time	3261K21	00000
239	±1%	3/8"	5"	Aluminum	One Time	3261K22	00000
250	±1%	3/8"	5"	Aluminum	One Time	3261K23	00000
256	±1%	3/8"	5"	Aluminum	One Time	3261K117	00000
263	±1%	3/8"	5"	Aluminum	One Time	3261K24	00000
275	±1%	3/8"	5"	Aluminum	One Time	3261K25	00000
288	±1%	3/8"	5"	Aluminum	One Time	3261K26	00000
300	±1%	3/8"	5"	Aluminum	One Time	3261K27	00000
313	±1%	3/8"	5"	Aluminum	One Time	3261K28	00000
325	±1%	3/8"	5"	Aluminum	One Time	3261K29	00000
338	±1%	3/8"	5"	Aluminum	One Time	3261K31	00000
344	±1%	3/8"	5"	Aluminum	One Time	3261K118	00000
350	±1%	3/8"	5"	Aluminum	One Time	3261K32	00000
363	±1%	3/8"	5"	Aluminum	One Time	3261K33	00000
375	±1%	3/8"	5"	Aluminum	One Time	3261K34	00000
388	±1%	3/8"	5"	Aluminum	One Time	3261K35	00000
400	±1%	3/8"	5"	Aluminum	One Time	3261K36	00000
413	±1%	3/8"	5"	Aluminum	One Time	3261K37	00000
425	±1%	3/8"	5"	Aluminum	One Time	3261K38	00000
437	±1%	3/8"	5"	Aluminum	One Time	3261K39	00000
450	±1%	3/8"	5"	Aluminum	One Time	3261K41	00000
463	±1%	3/8"	5"	Aluminum	One Time	3261K42	00000
475	±1%	3/8"	5"	Aluminum	One Time	3261K43	00000
488	±1%	3/8"	5"	Aluminum	One Time	3261K44	00000
500	±1%	3/8"	5"	Aluminum	One Time	3261K45	00000
518	±1%	3/8"	5"	Aluminum	One Time	3261K121	00000
525	±1%	3/8"	5"	Aluminum	One Time	3261K46	00000
550	±1%	3/8"	5"	Aluminum	One Time	3261K47	00000
575	±1%	3/8"	5"	Aluminum	One Time	3261K122	00000
600	±1%	3/8"	5"	Aluminum	One Time	3261K48	00000
650	±1%	3/8"	5"	Aluminum	One Time	3261K49	00000
700	±1%	3/8"	5"	Aluminum	One Time	3261K51	00000
750	±1%	3/8"	5"	Aluminum	One Time	3261K52	00000
800	±1%	3/8"	5"	Aluminum	One Time	3261K53	00000
850	±1%	3/8"	5"	Aluminum	One Time	3261K54	00000
900	±1%	3/8"	5"	Aluminum	One Time	3261K55	00000
932	±1%	3/8"	5"	Aluminum	One Time	3261K123	00000
950	±1%	3/8"	5"	Aluminum	One Time	3261K56	00000
1,000	±1%	3/8"	5"	Aluminum	One Time	3261K57	00000
1,022	±1%	3/8"	5"	Aluminum	One Time	3261K124	00000
1,050	±1%	3/8"	5"	Aluminum	One Time	3261K58	00000
1,100	±1%	3/8"	5"	Aluminum	One Time	3261K59	00000
1,150	±1%	3/8"	5"	Aluminum	One Time	3261K61	00000
1,200	±1%	3/8"	5"	Aluminum	One Time	3261K62	00000
1,250	±1%	3/8"	5"	Aluminum	One Time	3261K63	00000
1,300	±1%	3/8"	5"	Aluminum	One Time	3261K64	00000
1,400	±1%	3/8"	5"	Aluminum	One Time	3261K66	00000
1,450	±1%	3/8"	5"	Aluminum	One Time	3261K67	00000
1,500	±1%	3/8"	5"	Aluminum	One Time	3261K68	00000
1,550	±1%	3/8"	5"	Aluminum	One Time	3261K69	00000
1,600	±1%	3/8"	5"	Aluminum	One Time	3261K71	00000
1,650	±1%	3/8"	5"	Aluminum	One Time	3261K72	00000
1,700	±1%	3/8"	5"	Aluminum	One Time	3261K73	00000
1,800	±1%	3/8"	5"	Aluminum	One Time	3261K75	00000
1,900	±1%	3/8"	5"	Aluminum	One Time	3261K77	00000
1,950	±1%	3/8"	5"	Aluminum	One Time	3261K78	00000
2,000	±1%	3/8"	5"	Aluminum	One Time	3261K79	00000

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"	3224K25	0000000
10	300, 350, 400, 450, 500, 550, 600, 650, 700, 750	±1%	3/8"	5"	3224K26	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"	3224K32	000000

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	1660T361	00000


	17	16 hr.	Glass, Metal, Plastic, Rubber	-50 to 150	Wet	Fluorescent Blue, Fluorescent Green, Fluorescent Orange, Fluorescent Red, Fluorescent Yellow	1660T87	0000
	17	24 hr.	Glass, Metal, Plastic, Rubber	-50 to 150	Wet	Black, Blue, Brown, Green, Orange, Pink, Purple, Red, White, Yellow	1660T21	0000

Holders

		Each
Aluminum Holder	1660T53	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	1654T2	000000

Holders

		Each
Aluminum Holder	8613T21	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	1654T71	000000

Holders

		Each
Aluminum Holder	8613T21	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	1762T26	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	1660T93	00000

Holders

		Each
Aluminum Holder	1660T53	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	1654T3	00000

Holders

		Each
Aluminum Holder	8613T21	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	1654T5	000000

Holders

		Each
Aluminum Holder	8613T21	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	1660T79	00000


	17	24	Metal	-50 to 150	1,600	Black, Red, White, Yellow	1660T17	0000

Holders

		Each
Aluminum Holder	1660T53	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	1660T44	00000


	9.5	Instant	Metal	400 to 1,600	1,600	Black, Blue, Red, White, Yellow	1660T65	0000

Holders

		Each
Wood Holder	1660T54	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	5877T6	000000	6	5877T8	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	5877T2	00000
Medium	2	Metal	-20 to 150	Wet	Silver	5877T4	0000

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	Color		Each
Ultra-Bold Tip



	17	16	Concrete, Metal	-50 to 150	Outdoor	Black	1660T74	00000


	17	16	Concrete, Metal	-50 to 150	Outdoor	White	1660T71	0000
	17	16	Concrete, Metal	-50 to 150	Outdoor	Yellow	1660T72	0000

Holders