PTFE Nuts | McMaster-Carr

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Unified Standard Class 2B

Maximum Temperature

500° F to 999° F

DFARS Specialty Metals

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EAR99

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36 Products

Hex Nut Profile

Standard

The most common hex nuts for fastening machinery and equipment

24 products

Heavy

Wider and taller than standard nuts to handle heavier loads

12 products

Performance

Corrosion Resistant

Won't rust in wet and outdoor environments

5 products

Seize Resistant

The threads won't become stuck during installation

17 products

Hex Nuts

The most commonly used hex nuts, these are suitable for fastening most machinery and equipment.

Corrosion-Resistant Stainless Steel

Image of Product. Front orientation. Hex Nuts. Hex Nuts.

PTFE-Coated 18-8 Stainless Steel—A slippery PTFE coating prevents these nuts from becoming stuck during installation. The coating resists rust in wet and outdoor environments and can handle occasional exposure to mild acids and chemicals without corroding.

	Wd.	Ht.	Pkg. Qty.		Pkg.
PTFE-Coated 18-8 Stainless Steel


	6-32	1/4"	7/64"	50	94600A100	000000
	8-32	11/32"	1/8"	50	94600A200	00000
	10-24	3/8"	1/8"	50	94600A400	00000
	10-32	3/8"	1/8"	50	94600A300	00000
	1/4"-20	7/16"	3/16"	25	94600A500	00000

Plastic

High-Temperature Chemical-Resistant PTFE—The most chemical-resistant plastic nuts we offer, these stand up to the widest range of harsh acids, bases, solvents, and corrosive cleaners. They also keep their shape and strength at higher temperatures than most plastics.

				Temp.
	Thread Size	Wd.	Ht.	Min.	Max., ° F	Color	Pkg. Qty.		Pkg.
High-Temperature Chemical-Resistant PTFE


		2-56	3/16"	1/16"	Not Rated	500	White	1	90059A112	00000
		4-40	1/4"	3/32"	Not Rated	500	White	1	90059A005	0000
		6-32	5/16"	1/8"	Not Rated	500	White	1	90059A007	0000
		8-32	5/16"	1/8"	Not Rated	500	White	1	90059A009	0000
		10-24	3/8"	1/8"	Not Rated	500	White	1	90059A011	0000
		10-32	3/8"	9/64"	Not Rated	500	White	1	90059A111	0000
		1/4"-20	7/16"	7/32"	Not Rated	500	White	1	90059A029	0000
		5/16"-18	1/2"	17/64"	Not Rated	500	White	1	90059A030	0000
		3/8"-16	9/16"	21/64"	Not Rated	500	White	1	90059A031	0000
		3/8"-24	9/16"	21/64"	Not Rated	500	White	1	90059A113	0000
		1/2"-13	3/4"	7/16"	Not Rated	500	White	1	90059A033	0000
		1/2"-20	3/4"	7/16"	Not Rated	500	White	1	90059A114	00000
		5/8"-11	7/8"	35/64"	Not Rated	500	White	1	90059A035	00000
		3/4"-10	1 1/8"	41/64"	Not Rated	500	White	1	90059A036	00000
		M3 × 0.5 mm	5.32 mm	2.2 mm	Not Rated	500	White	1	90059A115	0000
		M4 × 0.7 mm	6.78 mm	2.9 mm	Not Rated	500	White	1	90059A116	0000
		M5 × 0.8 mm	7.78 mm	4.4 mm	Not Rated	500	White	1	90059A117	0000
		M6 × 1 mm	9.78 mm	4.9 mm	Not Rated	500	White	1	90059A118	0000
		M8 × 1.25 mm	12.73 mm	6.4 mm	Not Rated	500	White	1	90059A119	0000

Heavy-Profile Hex Nuts

About 10% wider and taller than standard-profile hex nuts, these handle heavier loads by distributing them over a larger area.

Extreme-Strength Steel

These nuts are about 20% stronger than high-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

PTFE-Coated Steel—A slippery PTFE coating prevents these nuts from becoming stuck during installation. They resist rust in wet and outdoor environments, however they're not recommended for prolonged exposure since the coating can wear off.

	Wd.	Ht.	Fastener Strength Grade/Class	Specs. Met	Pkg. Qty.		Pkg.
Blue PTFE-Coated Steel


	1/2"-13	7/8"	31/64"	ASTM Grade 2H	ASTM A194	25	90212A300	000000
	5/8"-11	1 1/16"	39/64"	ASTM Grade 2H	ASTM A194	10	90212A400	00000
	3/4"-10	1 1/4"	47/64"	ASTM Grade 2H	ASTM A194	10	90212A500	00000
	7/8"-9	1 7/16"	55/64"	ASTM Grade 2H	ASTM A194	5	90212A600	00000
	1"-8	1 5/8"	63/64"	ASTM Grade 2H	ASTM A194	5	90212A700	00000
	1 1/8"-8	1 13/16"	1 7/64"	ASTM Grade 2H	ASTM A194	1	90212A810	0000
	1 1/4"-8	2"	1 7/32"	ASTM Grade 2H	ASTM A194	1	90212A811	00000
	1 3/8"-8	2 3/16"	1 11/32"	ASTM Grade 2H	ASTM A194	1	90212A812	00000
	1 1/2"-8	2 3/8"	1 15/32"	ASTM Grade 2H	ASTM A194	1	90212A813	00000
	1 3/4"-8	2 3/4"	1 23/32"	ASTM Grade 2H	ASTM A194	1	90212A815	00000
	1 7/8"-8	2 15/16"	1 27/32"	ASTM Grade 2H	ASTM A194	1	90212A816	00000
	2"-8	3 1/8"	1 31/32"	ASTM Grade 2H	ASTM A194	1	90212A817	00000