Round Head Bolts(Carriage Bolt)

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Round Head Bolts(Carriage Bolt)

Round head bolts feature a smooth hemispherical dome head that sits flush or proud of the material surface, combining a clean decorative appearance with secure fastening for exposed installations in furniture, electronics, and consumer hardware.

Head Profile: The smooth curved head eliminates sharp edges and protrusions, reducing surface scratching risk and providing an aesthetically clean finish suitable for visible assembly joints in decorative and consumer-facing products.

Fastening Method: Typically driven from the nut side while the round head is held stationary, the smooth head also resists tampering in accessible locations where tool engagement from the bolt side is undesirable.

Materials and Standards: Produced in carbon steel and stainless steel to DIN 603 and equivalent international specifications across standard metric and imperial thread sizes.

Surface Treatment: Zinc plating, nickel plating, and blackening finishes are available to complement product aesthetics and provide basic corrosion resistance.

Better Fastener Industry Co., Ltd.

About Us

Hangzhou Better Fastener
Technology Limited

Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.

The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.

With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.

Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery

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  • A screw is a fastening tool that utilizes the principle of an inclined spiral plane to join or secure objects together. Its core structure consists of a cylindrical body with continuous threads (like spiral ridges), typically featuring a head at one end for convenient rotation. When turned, the rotational motion is con...

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  • Now that we've covered bolts, their "perfect partner" — the nut — is much easier to understand. Simply put, a nut is a small metal block or disc with a round hole in the center and internal threads on the wall of that hole. Its core function is to work with an externally threaded bolt to clamp two or more components to...

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  • Simply put, a washer is a thin, disc-shaped ring with a central hole, typically made of metal (such as carbon steel, stainless steel, or copper) or non-metallic materials (such as rubber, plastic, or asbestos). It is placed between the head of a bolt/nut and the surface of the workpiece, or at the junction between the ...

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  • Simply put, a bolt is a cylindrical fastener with external threads. It works with a matching nut or is screwed directly into a threaded hole of the mating part to firmly hold two or more components together. To put it intuitively, think of it as a "metal nail." However, unlike a nail that is driven in with a hammer, a ...

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