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About Hex Nuts
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Choose a hex nut with the right profile, material, and strength for your application.
Hex Nuts
Heavy-Profile Hex Nuts
 |
Extreme-Strength Steel
Thread Size | 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 | 00000 | ||
| 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 | ||
Stainless Steel Hex Head Screw Kits for Metal Pipe Flanges
 |  |
Shown Installed |
Join aluminum or stainless steel pipe flanges. These kits come with corrosion-resistant screws and nuts in the right size and number to match your flange's bolt holes. The screws have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.
Screw length is measured from under the head. For a tight seal, you’ll also need a gasket between the flanges.
316 Stainless Steel—Superior to 18-8 stainless steel screws, these won't degrade when exposed to harsh weather, salt water, and most chemicals.
PTFE-Coated 316 Stainless Steel—A slippery coating prevents these nuts from binding or sticking during installation. They resist rust in wet and outdoor environments and can handle occasional exposure to mild acids and chemicals without corroding.
Screw | Nut | 316 Stainless Steel Screws and Blue PTFE-Coated 316 Stainless Steel Nuts | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Pipe Size | Thread Size | Lg. | Head Wd. | Head Ht. | Threading | Thread Spacing | Tensile Strength, psi | Wd. | Ht. | Includes | Each | |||
For Class 125/150 Flanges | ||||||||||||||
| 1/2, 3/4 | 1/2"-13 | 2" | 3/4" | 11/32" | Partially Threaded | Coarse | 80,000 | 3/4" | 7/16" | 4 Hex Head Screws 4 Hex Nuts | 94368A227 | 000000 | ||
| 1, 1 1/4 | 1/2"-13 | 2 1/4" | 3/4" | 11/32" | Partially Threaded | Coarse | 80,000 | 3/4" | 7/16" | 4 Hex Head Screws 4 Hex Nuts | 94368A228 | 00000 | ||
| 1 1/2 | 1/2"-13 | 2 1/2" | 3/4" | 11/32" | Partially Threaded | Coarse | 80,000 | 3/4" | 7/16" | 4 Hex Head Screws 4 Hex Nuts | 94368A212 | 00000 | ||
| 2 | 5/8"-11 | 2 3/4" | 15/16" | 27/64" | Partially Threaded | Coarse | 80,000 | 15/16" | 35/64" | 4 Hex Head Screws 4 Hex Nuts | 94368A213 | 00000 | ||
| 2 1/2, 3 | 5/8"-11 | 3" | 15/16" | 27/64" | Partially Threaded | Coarse | 80,000 | 15/16" | 35/64" | 4 Hex Head Screws 4 Hex Nuts | 94368A138 | 00000 | ||
| 4 | 5/8"-11 | 3" | 15/16" | 27/64" | Partially Threaded | Coarse | 80,000 | 15/16" | 35/64" | 8 Hex Head Screws 8 Hex Nuts | 94368A139 | 00000 | ||
| 6 | 3/4"-10 | 3 1/4" | 1 1/8" | 1/2" | Partially Threaded | Coarse | 80,000 | 1 1/8" | 41/64" | 8 Hex Head Screws 8 Hex Nuts | 94368A141 | 00000 | ||
| 8 | 3/4"-10 | 3 1/2" | 1 1/8" | 1/2" | Partially Threaded | Coarse | 80,000 | 1 1/8" | 41/64" | 8 Hex Head Screws 8 Hex Nuts | 94368A142 | 00000 | ||
| 10, 12 | 7/8"-9 | 4" | 1 5/16" | 37/64" | Partially Threaded | Coarse | 80,000 | 1 5/16" | 3/4" | 12 Hex Head Screws 12 Hex Nuts | 94368A144 | 000000 | ||
For Class 300 Flanges | ||||||||||||||
| 1/2 | 1/2"-13 | 2 1/4" | 3/4" | 11/32" | Partially Threaded | Coarse | 80,000 | 3/4" | 7/16" | 4 Hex Head Screws 4 Hex Nuts | 94368A222 | 00000 | ||
| 3/4, 1 | 5/8"-11 | 2 1/2" | 15/16" | 27/64" | Partially Threaded | Coarse | 80,000 | 15/16" | 35/64" | 4 Hex Head Screws 4 Hex Nuts | 94368A219 | 00000 | ||
| 1 1/4 | 5/8"-11 | 2 3/4" | 15/16" | 27/64" | Partially Threaded | Coarse | 80,000 | 15/16" | 35/64" | 4 Hex Head Screws 4 Hex Nuts | 94368A218 | 00000 | ||
| 1 1/2 | 3/4"-10 | 3" | 1 1/8" | 1/2" | Partially Threaded | Coarse | 80,000 | 1 1/8" | 41/64" | 4 Hex Head Screws 4 Hex Nuts | 94368A217 | 00000 | ||
| 2 | 5/8"-11 | 3" | 15/16" | 27/64" | Partially Threaded | Coarse | 80,000 | 15/16" | 35/64" | 8 Hex Head Screws 8 Hex Nuts | 94368A216 | 00000 | ||
| 3 1/2, 4 | 3/4"-10 | 3 3/4" | 1 1/8" | 1/2" | Partially Threaded | Coarse | 80,000 | 1 1/8" | 41/64" | 8 Hex Head Screws 8 Hex Nuts | 94368A221 | 000000 | ||
Threaded Rod and Hex Nut Kits for Pipe Flanges
 |
These kits include the rods and nuts you need to connect standard-size pipe flanges. Their heavy duty material and construction keep tanks, valves, and flanges tightly sealed under heavy pressure. With a 10% wider profile than standard hex nuts, these hex nuts spread force over a larger area and can handle extra torque during installation. The rods are fully threaded to distribute and absorb high levels of clamping force. To ensure your pipe flange connection is tight, add a pipe flange gasket to your installation. These rods and nuts meet a number of rigorous industry specifications for high-pressure performance, high-temperature performance, and dimensional requirements.
Medium-Strength Steel
 |
With a tensile strength of 125,000 psi, these rods are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges. They are about twice as strong as low-strength steel rods.
Corrosion-Resistant PTFE-Coated Steel—A PTFE coating protects the steel from corrosion and pitting when exposed to chemicals, such as those found in cleaners and sanitizers. The coating is also slippery to thread on smoothly.
Threaded Rod | Hex Nut | Corrosion-Resistant PTFE-Coated Steel | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Pipe Size | Thread Size | Lg. | Tensile Strength, psi | Specs. Met | Thread Size | Wd. | Ht. | Hex Nut Profile | Specs. Met | Hardness | Fastener Strength Grade/Class | No. of Threaded Rods Included | No. of Nuts Included | Color | Each | |||
For Flange Class 600 | ||||||||||||||||||
| 1 | 5/8"-11 | 3 1/2" | 125,000 | ASTM A193 | 5/8"-11 | 1 1/16" | 39/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 4 | 8 | Blue | 95064A111 | 000000 | ||
| 1 1/2 | 3/4"-10 | 4 1/4" | 125,000 | ASTM A193 | 3/4"-10 | 1 1/4" | 47/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 4 | 8 | Blue | 95064A123 | 00000 | ||
| 2 | 5/8"-11 | 4 1/4" | 125,000 | ASTM A193 | 5/8"-11 | 1 1/16" | 39/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 8 | 16 | Blue | 95064A112 | 00000 | ||
| 3 | 3/4"-10 | 5" | 125,000 | ASTM A193 | 3/4"-10 | 1 1/4" | 47/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 8 | 16 | Blue | 95064A124 | 00000 | ||
| 4 | 7/8"-9 | 5 3/4" | 125,000 | ASTM A193 | 7/8"-9 | 1 7/16" | 55/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 8 | 16 | Blue | 95064A133 | 00000 | ||
| 6 | 1"-8 | 6 3/4" | 125,000 | ASTM A193 | 1"-8 | 1 5/8" | 63/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 12 | 24 | Blue | 95064A142 | 000000 | ||
For Flange Class 1500 | ||||||||||||||||||
| 1/2 | 3/4"-10 | 4 1/4" | 125,000 | ASTM A193 | 3/4"-10 | 1 1/4" | 47/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 4 | 8 | Blue | 95064A221 | 00000 | ||
| 3/4 | 3/4"-10 | 4 1/2" | 125,000 | ASTM A193 | 3/4"-10 | 1 1/4" | 47/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 4 | 8 | Blue | 95064A222 | 00000 | ||
| 1 | 7/8"-9 | 5" | 125,000 | ASTM A193 | 7/8"-9 | 1 7/16" | 55/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 4 | 8 | Blue | 95064A231 | 00000 | ||
| 1 1/2 | 1"-8 | 5 1/2" | 125,000 | ASTM A193 | 1"-8 | 1 5/8" | 63/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 4 | 8 | Blue | 95064A241 | 00000 | ||
| 2 | 7/8"-9 | 5 3/4" | 125,000 | ASTM A193 | 7/8"-9 | 1 7/16" | 55/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 8 | 16 | Blue | 95064A232 | 00000 | ||
| 3 | 1 1/8"-8 | 7" | 125,000 | ASTM A193 | 1 1/8"-8 | 1 13/16" | 1 7/64" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 8 | 16 | Blue | 95064A251 | 000000 | ||
| 4 | 1 1/4"-8 | 7 3/4" | 125,000 | ASTM A193 | 1 1/4"-8 | 2" | 1 7/32" | Heavy | ASTM A194 | Rockwell C35 | ASTM Grade B7 | 8 | 16 | Blue | 95064A261 | 000000 | ||
