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Cap Nuts

422 Products

Cap Nuts

Plastic Cap Nuts
These nylon 6/6 cap nuts are chemical resistant, nonconductive, and lightweight.
Sanitary Thread Caps
Cover exposed threads with these caps to help prevent bacteria growth in food processing areas and other sanitary environments.
High-Profile Cap Nuts
These cap nuts offer at least three-times the thread depth of standard cap nuts and are about twice the height.
Low-Profile Cap Nuts
Low-profile cap nuts are about 20% shorter than standard cap nuts for use in low-profile applications.
Stainless Steel Extra-Wide High-Hex Cap Nuts
Stainless steel cap nuts have excellent corrosion resistance in most environments.
Steel Extra-Wide High-Hex Cap Nuts
Known for their strength, these steel cap nuts have a black-oxide finish to resist corrosion in dry environments.
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.
Aluminum Cap Nuts
One-third the weight of steel, aluminum cap nuts resist corrosion in wet environments.
Brass Cap Nuts
Brass cap nuts are corrosion resistant in wet environments and electrically conductive.
Metric Plastic Cap Nuts
These metric nylon 6/6 cap nuts are chemical resistant, nonconductive, and lightweight.
18-8 Stainless Steel Cap Nuts
These cap nuts have good chemical resistance and may be mildly magnetic.
Medium-Strength Steel Cap Nuts
These Grade 5 cap nuts are suitable for fastening most machinery and equipment.
Metric High-Strength Steel Cap Nuts—Class 10
Comparable in strength to Class 10.9 bolts, these nuts are about 25% stronger than medium-strength steel cap nuts.
High-Strength Steel Cap Nuts—Grade 8
These nuts are about 25% stronger than medium-strength steel cap nuts.
Metric Low-Strength Steel Cap Nuts
These metric nuts are about half the strength of medium-strength steel cap nuts. Use them in light duty fastening applications, such as securing access panels.
Low-Strength Steel Cap Nuts
About half the strength of medium-strength steel cap nuts, use them in light duty fastening applications, such as securing access panels.
Metric Super-Corrosion-Resistant316 Stainless Steel Cap Nuts
These metric cap nuts have excellent resistance to chemicals and salt water.
Super-Corrosion-Resistant 316 Stainless Steel Cap Nuts
These cap nuts have excellent resistance to chemicals and salt water.
Metric 18-8 Stainless Steel Cap Nuts
These metric cap nuts have good chemical resistance and may be mildly magnetic.

Cap Locknuts

Metric Nylon-Insert Cap Locknuts
A nylon insert on these metric nuts prevents vibration from loosening them, and a domed head protects the threads at the end of the bolt from damage and debris.
18-8 Stainless Steel Distorted-Thread Cap Locknuts
An irregularly shaped thread grips the bolt for a stronger hold than nylon-insert cap locknuts. Made of 18-8 stainless steel, these cap locknuts have good chemical resistance.
Nylon-Insert Cap Locknuts
The nylon cap covers and grips the threads to resist loosening.
Metric 18-8 Stainless SteelVibration-Resistant Cap Locknuts
To resist loosening from vibration, these metric locknuts have a nylon patch bonded to their threads that adds friction. They have good chemical resistance and may be mildly magnetic because they’re stainless steel.
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.
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.
Super-Corrosion-Resistant 316 StainlessSteel Vibration-Resistant Cap Locknuts
With a nylon patch bonded to their threads for added friction, these nuts resist coming loose from vibration. They’re 316 stainless steel, so they have excellent resistance to chemicals and salt water.
Super-Corrosion-Resistant 316 StainlessSteel 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.

Open-End Cap Nuts

Open-End Cap Nuts
The dome is open so these cap nuts can be used on bolts of any length.

Sealing Cap Nuts

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.

Cap Nut Assortments

Cap Nut Assortments
Cap nuts cover and protect threads while providing a finished appearance.
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