High Finish Decorative Acorn Nuts

The High Finish Decorative Acorn Nuts produced by the Xiaoguo® factory ingeniously combine protective functions with aesthetic value. The enclosed dome structure can effectively cover the exposed parts of the bolts, preventing moisture, dust, etc. from entering, thereby avoiding rusting, prolonging the service life and reducing maintenance costs.

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Product Description

Upgrade your industrial supply chain with Xiaoguo®! We specialize in manufacturing top-tier High Finish Decorative Acorn Nuts that guarantee precise dimensions and an elegant aesthetic appeal.

Core working principle disassembly

Technical term: Blind-Tapped Internal Threads + One-Piece Cold-Heading Process

The threaded hole of the nuts does not extend throughout the entire nut. The mating bolt bottoms out against the inner dome wall it is inserted into the inner wall of the dome. Meanwhile, the cold heading forming process is adopted—the metal wire is directly pressed into shape through a high-pressure die at room temperature.

High Finish Decorative Acorn Nuts

D：Thread diameter		H：Total height
F：Hexagon height		P：Tooth pitch
N:Hexagon opposite side diameter
D	F	H	N	P
M3	2.4-2.7	5.7-6.5	5.32-5.5	0.5
M4	2.9-3.2	7.64-8.0	6.78-7.0	0.7
M5	3.7-4.0	9.64-10.0	7.78-8.0	0.8
M6	4.7-5.0	11.57-12.0	9.78-10.0	1
M8	6.14-6.5	14.57-15.0	12.73-13.0	1.25
M10	7.64-8.0	17.57-18.0	16.73-17.0	1.5
M12	9.64-10.0	21.48-22.0	18.67-19.0	1.75
M14	10.3-11.0	24.48-25.0	21.67-22.0	1
M16	12.3-13.0	27.16-28.0	23.67-24.0	1.25
M18	14.3-15.0	31.38-32.0	26.67-27.0	1.5
M20	14.9-16.0	33.38-34.0	29.67-30.0	1.75

Why is High Finish Decorative Acorn Nuts important?

The dome offers 360° protection: preventing moisture and dust from entering the threads and avoiding rusting.

Smooth dome design eliminates the risk of scratches: no sharp edges, does not snag clothes or scratch the operator

Integrated structure without welding weaknesses: Cold heading is used for one-time molding, and there are no joint seams between the dome and the base.

The standard hexagonal base ensures tool compatibility: it can be installed with standard wrenches or sockets.

Locking design (optional): For some models, the threads in the hexagonal area are deformed to create friction, preventing vibration and loosening.

Frequently Asked Questions

Can dome-shaped nuts and ordinary hexagonal nuts be used interchangeably?

No. The dome nuts and the ordinary hexagonal nuts cannot be used interchangeably.

Dome-shaped nuts have blind hole structures, and the length of the bolt cannot exceed the inner thread depth of the nut. If the bolt is too long, it will hit the inner wall of the dome and not only will it not be tightened properly, but it may also damage the nut.

High Finish Decorative Acorn Nuts

Will the Exquisite appearance Acorn hexagon nuts affect the tightening strength?

No.The appearance of the acorn hexagonal nut will not affect the tightening strength.

The hexagonal base of the cap-shaped nut has the same structure as that of a regular hexagonal nut. The tightening torque and clamping force are transmitted through the hexagonal base. The dome only serves as a protective function and does not participate in the force application.

How to choose between stainless steel cap nuts and carbon steel galvanized cap nuts?

For indoor dry environments and general industrial use, carbon steel galvanized (economical option); for humid environments, use stainless steel 304 (A2) for food equipment; for coastal, marine, and chemical environments, use stainless steel 316 (A4). Brass is suitable for decorative or explosion-proof applications.

Can the High Finish Decorative Acorn Nuts prevent loosening?

Standard cap-shaped nuts do not offer an active anti-loosening function. If anti-loosening is required, you can choose self-locking cap-shaped nuts (with threaded deformation treatment), or use them in combination with spring washers/locking washers.

Could you provide free samples?

OK. Standard specifications are provided free of charge for customers to test and verify. You only need to bear the international shipping cost. The sample preparation period is 3 to 7 working days.