OEM Acorn Nut Manufacturers, Factory

Thread Size (M) Pitch (mm) Width Across Flats (mm) Nut Height H (mm) Cap Dome Height (mm) Material Options
M3 0.5 5.5 4.8 1.5 Steel / Stainless A2
M4 0.7 7 6.2 1.8 Steel / A2 / A4 / Brass / Nylon
M5 0.8 8 7 2 Steel / A2 / A4 / Brass / Nylon
M6 1 10 8.5 2.5 Steel / A2 / A4 / Brass / Nylon
M8 1.25 13 11 3 Steel / A2 / A4 / Brass / Nylon
M10 1.5 16 13.5 3.5 Steel / A2 / A4 / Brass
M12 1.75 18 16 4 Steel / A2 / A4
M14 2 21 18.5 4.5 Steel / A2
M16 2 24 21 5 Steel / A2
M18 2.5 27 23.5 5.5 Steel / A2
M20 2.5 30 26 6 Steel

Source:For high acorn nut dimensions, contact Sinsun’s engineering team – taller profiles vary by application and thread size.

Product Description

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Crown Cap Nuts
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Tee Nuts
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Frequently Asked Questions

? What are the primary applications of Crown Cap Nuts?

Crown cap nuts are mainly used to cover exposed threaded studs, screws, and bolts. This provides a clean, finished appearance and protects against potential injuries caused by sharp exposed thread edges.

? How does a Washer Nut improve fastening stability?

A washer nut (commonly known as a flange nut) features an integrated washer that helps distribute the clamping pressure over a larger surface area. This reduces the risk of damage to the mating surface and prevents loosening on uneven joints.

? When should I use a Coupling Nut?

Coupling nuts are long, hex-shaped fasteners designed to join two male threads together, most commonly threaded rods. They are ideal for extending the overall length of a thread structure in construction or plumbing systems.

? What makes a Nyloc Nut self-locking?

A nyloc nut contains a built-in nylon collar insert. When a bolt is threaded into the nut, the nylon insert grips the thread tightly, creating a friction-based lock that prevents the nut from backing off under high vibration environments.

? What are the benefits of using Tee Nuts in woodworking?

Tee nuts feature a long barrel with a flat, pronged flange at one end. When inserted into wood, the prongs anchor securely into the material, creating a strong, flush-fitting threaded metal receptacle for bolts.

? How do Cage Nuts work in server and equipment racks?

Cage nuts consist of a standard nut encased in a spring steel cage with flexible wings. The cage is clipped into square rack holes, allowing for a strong, replaceable, and easily adjustable mounting point for hardware shelves and equipment.

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