About Nuts, Materials, and Finishes
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18-8 Stainless Steel Cap Nuts
These cap nuts have good chemical resistance and may be mildly magnetic. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance.
Black-oxide stainless steel cap nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Super-Corrosion-Resistant 316 Stainless Steel Cap Nuts
These cap nuts have excellent resistance to chemicals and salt water. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | 1 | 000000000 | 00000 |
Low-Strength Steel Cap Nuts
Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance. About half the strength of medium-strength steel cap nuts, use them in light duty fastening applications, such as securing access panels.
Zinc-plated steel cap nuts resist corrosion in wet environments.
Nickel-plated steel cap nuts have excellent resistance to chemicals and salt water and have a decorative metallic finish.
Black corrosion-resistant-coated steel cap nuts have excellent resistance to chemicals and salt water.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Cap Nuts
Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance. Made from Grade 5 steel, they're suitable for fastening most machinery and equipment.
Zinc-plated steel cap nuts resist corrosion in wet environments.
Black corrosion-resistant-coated steel cap nuts have excellent resistance to chemicals and salt water.
For technical drawings and 3-D models, click on a part number.
High-Strength Steel Cap Nuts—Grade 8
Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance. They're about 25% stronger than medium-strength steel cap nuts.
Zinc-plated steel cap nuts resist corrosion in wet environments.
Black corrosion-resistant-coated steel cap nuts have excellent resistance to chemicals and salt water.
For technical drawings and 3-D models, click on a part number.
Plastic Cap Nuts
These nylon 6/6 cap nuts are chemical resistant, nonconductive, and lightweight. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Brass Cap Nuts
These cap nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance. All have excellent resistance to chemicals and salt water and have a decorative metallic finish.
For technical drawings and 3-D models, click on a part number.
Low-Profile Cap Nuts
About 20% shorter than standard cap nuts, use these in low-profile applications. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance. Made from 18-8 stainless steel, they have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
1/2"-13 | 3/8" | 3/4" | 9/16" | 1 | 000000000 | 00000 |
Steel High Heavy-Hex Cap Nuts
These cap nuts are about 20% wider and taller than standard cap nuts and have high sides to provide a larger area for your wrench to grip. Also known as acorn nuts, a smooth rounded head covers and protects threads while providing a finished appearance. They have a black-oxide finish that provides mild corrosion resistance in dry environments.
For technical drawings and 3-D models, click on a part number.
Thread | |||||
---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Each | |
Black-Oxide Steel | |||||
1/2"-13 | 19/32" | 7/8" | 15/16" | 000000000 | 00000 |
Stainless Steel High Heavy-Hex Cap Nuts
These cap nuts have good chemical resistance. They're about 20% wider and taller than standard cap nuts and have high sides to provide a larger area for your wrench to grip. Also known as acorn nuts, a smooth rounded head covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | |||||
---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Each | |
18-8 Stainless Steel | |||||
1/2"-13 | 19/32" | 7/8" | 15/16" | 000000000 | 000000 |
Sanitary Low-Profile Cap Nuts
Certified by EHEDG (European Hygienic Engineering and Design Group) to meet sanitary design standards, these cap nuts fit into tight spaces to cover and seal exposed threads in your food processing facility. Also known as acorn nuts, they’re at least 20% shorter than standard cap nuts. Made from 316 stainless steel, these nuts won’t corrode from frequent washdowns with water or harsh cleaners. They are self-draining, meaning that they don’t have horizontal surfaces, so liquids and debris will drain off completely. They also have extremely smooth sides and rounded edges to eliminate crevices where bacteria could grow.
The silicone seal at the base of the nut keeps contaminants off the threads and prevents an unsanitary metal-to-metal connection. It’s made with metal and chemical additives, so you can find it with a metal detector or X-ray machine if it falls into your line. This helps you comply with Hazard Analysis and Critical Control Point (HACCP) programs to keep contaminated food from leaving your facility. The seal is also FDA compliant, so it’s safe for direct contact with food.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Performance Properties | Specifications Met | Each | |
316 Stainless Steel—Silicone Rubber Seal | |||||||
Inch | |||||||
1/2"-13 | 11/32" | 3/4" | 35/64" | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 000000 |
High-Profile Cap Nuts
These cap nuts offer at least three-times the thread depth of standard acorn nuts and are about twice the height. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance. Made from 18-8 stainless steel, they have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Distorted-Thread Cap Locknuts
An irregularly shaped thread grips the bolt for a stronger hold than nylon-insert cap locknuts. Also known as acorn locknuts, a smooth rounded head that covers and protects threads while providing a finished appearance. Made from 18-8 stainless steel, they have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | 1 | 000000000 | 00000 |
18-8 Stainless Steel Vibration-Resistant Cap Locknuts
A nylon patch bonded to the threads of these reusable nuts adds friction to prevent loosening under vibration. However, the patch's strength lessens with each use. These nuts have good chemical resistance and may be mildly magnetic because they’re made of 18-8 stainless steel. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | Thread Locker | |||||||
---|---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Type | Max. Temp., °F | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | Nylon Patch | 250° | 1 | 000000000 | 00000 |
Low-Strength Steel Distorted-Thread Cap Locknuts
For a stronger hold than nylon-insert cap locknuts, these locknuts have an irregularly shaped thread that grips the bolt and resists loosening from vibration. They are made of Grade 2 steel, so they are about half the strength of medium-strength steel nuts and are often used in light duty applications, such as securing access panels. A zinc-plated finish resists corrosion in wet environments. Also known as acorn locknuts, their smooth rounded head gives a finished appearance while covering and protecting threads.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 2 | ||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | 5 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Vibration-Resistant Cap Locknuts
With a nylon patch bonded to their threads for added friction, these nuts resist coming loose from vibration. They’re reusable, but the patch’s strength decreases with each use. Made of 316 stainless steel, they have excellent resistance to chemicals and salt water. Also known as acorn nuts, these cap nuts have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | Thread Locker | |||||||
---|---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Type | Max. Temp., °F | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | Nylon Patch | 250° | 1 | 000000000 | 000000 |
Super-Corrosion-Resistant 316 Stainless Steel Distorted-Thread Cap Locknuts
With an irregularly shaped thread, these locknuts grip the bolt for a stronger hold than nylon-insert cap nuts and resist loosening from vibration. They’re made from 316 stainless steel, so they have excellent resistance to chemicals and salt water. Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | 1 | 000000000 | 000000 |
Open-End Cap Nuts
An open dome allows these cap nuts to be used on bolts or rods of any length. Their domed shape provides a finished appearance. Made from 18-8 stainless steel, they have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Thread | |||||
---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Each | |
18-8 Stainless Steel | |||||
1/2"-13 | 1/2" | 3/4" | 1/2" | 000000000 | 00000 |
Sealing Cap Nuts
A silicone seal prevents leaks and seals contaminants. Also known as acorn nuts, these cap nuts have a smooth rounded head that covers and protects threads while creating a finished appearance. They’re stainless steel, so they have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
---|---|---|---|---|---|---|---|
Size | Dp. | Wd. | Ht. | Max. Pressure | Seal Temp. Range, °F | Each | |
18-8 Stainless Steel | |||||||
1/2"-13 | 1/2" | 3/4" | 13/16" | 1,200 psi | -80° to 400° | 000000000 | 00000 |