Metric Class 10 Nuts | McMaster-Carr

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9 Products

About Hex Head Screws and Bolts

Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.

Stainless Steel Hex Screw and Nut Kits for Pipe Flanges


Shown Installed	Stainless Steel
Shown Installed	Stainless Steel with Blue PTFE-Coated Nuts

Join standard-sized stainless steel and aluminum pipe flanges in corrosive conditions. These kits come with the right size and number of screws and nuts for the bolt holes in each pipe size. For a tight seal, you’ll also need a gasket between the flanges. All screws and nuts meet ASTM and ASME standards or DIN standards for material quality and dimensions. They may be mildly magnetic. Screw length is measured from under the head.

18-8 stainless steel fasteners resist corrosion from mild chemicals and water. They are ideal for wet environments.

316 stainless steel fasteners are more corrosion resistant than 18-8 stainless steel fasteners and have excellent resistance to chemicals and salt water.

Kits with blue PTFE-coated nuts thread together with the screws smoothly thanks to the slippery coating on the nut. The coating also resists chemicals, so it doesn't compromise their corrosion resistance.

For Class 125/150 Pipe Flanges

	Screw					Nut
For Pipe Size	Lg.	Min. Thread Lg.	Head Wd.	Head Ht.	Tensile Strength, psi	Wd.	Ht.	No. of Screws Included	No. of Nuts Included		Each
18-8 Stainless Steel
7/8"-9
10, 12	4"	2"	1 5/16"	37/64"	80,000	1 5/16"	3/4"	12	12	94368A118	0000000
316 Stainless Steel
7/8"-9
10, 12	4"	2"	1 5/16"	37/64"	80,000	1 5/16"	3/4"	12	12	94368A132	000000
316 Stainless Steel with Blue PTFE-Coated Nuts
7/8"-9
10, 12	4"	2"	1 5/16"	37/64"	80,000	1 5/16"	3/4"	12	12	94368A144	000000

For Class 300 Pipe Flanges

	Screw					Nut				18-8 Stainless Steel
For Pipe Size	Lg.	Min. Thread Lg.	Head Wd.	Head Ht.	Tensile Strength, psi	Wd.	Ht.	No. of Screws Included	No. of Nuts Included		Each
1"-8
10	5 1/2"	2 1/4"	1 1/2"	43/64"	80,000	1 1/2"	55/64"	16	16	94368A157	0000000

Steel Hex Screw and Nut Kits for Pipe Flanges

Shown Installed

Connect standard-sized steel and cast iron pipe flanges. These kits come with the right size and number of screws and nuts for the bolt holes in each pipe size. For a tight seal, you’ll also need a gasket between the flanges. All screws and nuts meet ASTM and ASME standards or DIN standards for material quality and dimensions. Screw length is measured from under the head.

Zinc-plated fasteners resist corrosion in wet environments.

Hot-dipped galvanized fasteners are 10 times more corrosion resistant than zinc-plated fasteners.

For Class 125/150 Pipe Flanges

	Screw					Nut
For Pipe Size	Lg.	Min. Thread Lg.	Head Wd.	Head Ht.	Tensile Strength, psi	Wd.	Ht.	No. of Screws Included	No. of Nuts Included		Each
Zinc-Plated Steel
7/8"-9
10, 12	4"	2"	1 5/16"	37/64"	60,000	1 5/16"	3/4"	12	12	97788A147	000000
Hot-Dipped Galvanized Steel
7/8"-9
10, 12	4"	2"	1 5/16"	37/64"	60,000	1 5/16"	3/4"	12	12	97788A154	00000

For Class 250/300 Pipe Flanges

	Screw					Nut				Zinc-Plated Steel
For Pipe Size	Lg.	Min. Thread Lg.	Head Wd.	Head Ht.	Tensile Strength, psi	Wd.	Ht.	No. of Screws Included	No. of Nuts Included		Each
1"-8
10	5 1/2"	2 1/4"	1 1/2"	43/64"	60,000	1 1/2"	55/64"	16	16	97788A155	000000

Hex Head Screw, Nut, and Washer Kits for Plastic Pipe Flanges

Shown Installed

Use these kits to connect plastic pipe flanges—they’re sized for Class 150 flanges made to ASME B16.5 dimensions. They come with screws, nuts, and washers that match the size and number of bolt holes for each pipe size. For a complete connection, you’ll also need a gasket. All screws and nuts meet ASTM specifications for material quality and ASME specifications for dimensions. Washers distribute the pressure from a tightened nut over the surface of the flange, which helps prevent damage. Screw length is measured from under the head.

Zinc-plated steel fasteners resist corrosion in wet environments.

18-8 stainless steel fasteners are more corrosion resistant than zinc-plated steel fasteners and ideal for wet and outdoor environments. They have good chemical resistance and may be mildly magnetic.

	Screw					Nut		Washer
For Pipe Size	Lg.	Min. Thread Lg.	Head Wd.	Head Ht.	Tensile Strength, psi	Wd.	Ht.	ID	OD	Thick.	No. of Screws Included	No. of Nuts Included	No. of Washers Included		Each
Zinc-Plated Steel for Class 150 Plastic Flanges
7/8"-9
10, 12	6"	2"	1 5/16"	35/64"	60,000	1 5/16"	49/64"	0.938"	2 1/4"	0.172"	12	12	24	97751A210	0000000
18-8 Stainless Steel for Class 150 Plastic Flanges
7/8"-9
10, 12	6"	2"	1 5/16"	35/64"	85,000	1 5/16"	49/64"	0.937"	2"	0.109"	12	12	24	97751A320	000000