Top 10 Serrated Spring Pins Manufacturers in China

If you are looking for Serrated Spring Pins Manufacturers in China, the product can appear simple, but the actual specification matters. Serrated spring pins use a slotted cylindrical body with a toothed or serrated profile. During installation, the body compresses and the serrated sections engage with the mating hole wall. This gives the pin additional resistance to axial movement compared with a standard smooth slotted spring pin.

For B2B purchasing, buyers normally need to check more than diameter and length. Material, duty type, tooth profile, slot dimensions, hardness, surface treatment, hole fit, packaging, and repeat-order consistency all affect the final application.

Here are 10 Chinese manufacturers and suppliers worth checking when sourcing Serrated Spring Pins, Toothed Spring Pins, and related spring pin products.

In No Particular Order

Anhui Pins Metal Products Co., Ltd.

Anhui Pins Metal Products Co., Ltd. focuses on precision pins and metal fastening components for industrial applications. Its product range includes Dowel Pins, Slotted Spring Pins, Tooth Spring Pins, Coiled Spring Pins, and other pin products.

The company manufactures Serrated Spring Pins with a slotted cylindrical body and serrated profile. The toothed sections engage with the mating hole after installation, creating multiple contact points along the slot area. This structure is intended for assemblies where the pin needs additional resistance to axial displacement.

The product range covers heavy duty and light duty Serrated Spring Pins, with metric and inch sizes available. The published range covers diameters from 2.0–20.0 mm and lengths from 6.0–150.0 mm, with custom dimensions available for OEM projects. Materials include high-carbon spring steel and stainless steel.

For buyers comparing a Serrated Spring Pins Manufacturer in China, material and heat treatment should be discussed with the supplier based on the required spring performance. Spring steel can be selected where elasticity and mechanical strength are important, while stainless steel can be considered for applications with higher corrosion requirements.

The company also supports custom Serrated Spring Pins. Production can follow customer drawings or samples, including diameter, length, slot dimensions, serrated profile, material, hardness, surface treatment, tolerance, and packaging.

Surface options include natural finish with protective lubricant, phosphating, zinc plating, and other specified finishes. This gives OEM buyers more control over the pin specification when the product will be used in automotive components, hinges, plastic components, industrial machinery, or mechanical assemblies.

For companies searching for a custom Serrated Spring Pins supplier in China, this type of drawing-based production is useful when a standard catalog pin does not match the existing hole or assembly design.

The company also provides other pin categories, which can help OEM buyers source Serrated Spring Pins, Spring Pins, Dowel Pins, and Coiled Spring Pins from one supplier. For repeat B2B purchasing, this can simplify product management when several pin types are used in the same project.

Shanghai Sea Song Co., Ltd.

Shanghai Sea Song Co., Ltd. offers serrated spring pins under the names Serrated Spring Pin, Tooth Pin, and Connex Pin. Its published range includes DIN 1481 / ISO 8752 products, with carbon steel and stainless steel materials and finishes such as black oxide, zinc plating, Dacromet, and plain finish.

The company also supplies retaining rings, washers, dowel pins, coiled spring pins, taper pins, keys, and other fastening products. This wider catalog is useful for distributors that prefer to combine multiple hardware categories in one purchasing program.

Shenzhen Conghui Precision Hardware Co., Ltd.

Shenzhen Conghui Precision Hardware Co., Ltd. lists heavy-duty serrated spring pins manufactured by automatic and CNC lathe processes. Its published specification covers diameters from M2 to M13 and lengths from 4 to 180 mm, with custom sizes available. Materials include stainless steel 304/316, carbon steel, and brass.

For OEM buyers, the combination of serrated pins and precision machining is useful when the spring pin forms part of a larger custom hardware project. The company also lists samples and non-standard production support.

Wenzhou Meters Int'l Trade Co., Ltd.

Wenzhou Meters offers Heavy Duty Serrated Spring Pins under SN 212785 and SN 212786. Its published product information lists spring steel and SUS 304 as material options, with polishing or zinc plating available. Custom specifications are also supported.

The supplier covers several spring pin categories, including heavy-duty slotted pins, light-type slotted pins, standard-duty coiled spring pins, and heavy-duty coiled spring pins. This makes it a useful option when a purchasing project involves several spring pin designs.

Wuxi Ingks Metal Parts Co., Ltd.

Wuxi Ingks Metal Parts Co., Ltd. appears among Chinese suppliers of serrated tooth spring pins and stainless steel serrated spring pins. Its product listings cover tooth-slotted spring pins and cylindrical serrated spring pins.

The company is more relevant to buyers looking for serrated pins together with other precision metal components. For a custom order, the important details to confirm are the tooth profile, diameter, length, material, finish, and required quantity.

Shenzhen Sandum Precision Parts Co., Ltd.

Shenzhen Sandum Precision Parts Co., Ltd. is listed for DIN 7346 / ISO 13337 spring pins with serrated slots. Its product listing places the company in the precision parts category, making it another option for buyers comparing slotted and serrated spring pin designs.

This distinction matters when sourcing spring pins because a serrated profile and a conventional slot are not interchangeable design features. The purchase order should identify the exact pin structure required by the assembly.

Ningbo HuaHui Metal Products Co., Ltd.

Ningbo HuaHui Metal Products Co., Ltd. is listed for stainless steel serrated elastic pins and serrated cylindrical spring pins. Stainless steel is a useful option when the pin will be exposed to moisture, chemicals, outdoor conditions, or other environments where corrosion resistance is part of the specification.

For stainless steel sourcing, buyers should confirm the actual grade rather than simply specifying "stainless steel." Grade selection can affect corrosion resistance, strength, hardness, and production cost.

Fasto Industrial Co., Ltd.

Fasto Industrial Co., Ltd. is listed for serrated tooth double-shear spring pins in carbon steel, including M3–M12 products. Its broader catalog covers industrial fasteners, giving distributors and industrial purchasing teams an option for mixed fastener sourcing.

For regular orders, buyers should confirm whether the required size is a standard production item or a made-to-order specification. MOQ, finish, packaging, and lead time should also be included in the RFQ.

Taizhou Hongchuang Hardware Co., Ltd.

Taizhou Hongchuang Hardware Co., Ltd. is listed for stainless steel serrated Connex open slotted tooth spring pins. This product type combines the slotted spring-pin structure with a toothed profile, giving the pin a different retention mechanism from a conventional smooth slotted spring pin.

The company can be considered when stainless steel and serrated retention are both required. Buyers should provide the hole diameter and assembly conditions when requesting a custom size.

Lemar Metal Products Co., Ltd.

Lemar Metal Products manufactures Toothed Spring Pins and describes them as elastic pins used for positioning, fixation, and load transmission. Its published material options include iron, stainless steel, and aluminum, with customized sizes available.

The company's product information also highlights the serrated surface structure. The teeth engage with the hole wall to increase friction and mechanical retention. This makes the product relevant to applications where a smooth cylindrical pin does not provide enough holding force.

How Do Serrated Spring Pins Work?

A Serrated Spring Pin combines two functions in one body: elastic compression and mechanical engagement.

The slotted body compresses when the pin enters the mating hole. After installation, the spring section attempts to recover its original diameter and applies radial pressure against the hole wall. The serrated sections add localized contact points that increase resistance to axial movement.

This design makes serrated pins different from ordinary smooth slotted spring pins. The smooth version mainly depends on radial spring force, while the serrated version adds tooth-to-hole engagement.

For assemblies exposed to vibration or repeated movement, this additional retention can be useful. The actual performance still depends on the pin diameter, hole size, material, installation force, and assembly design.

Serrated Spring Pins vs. Standard Slotted Spring Pins

The two products look similar because both use a slotted cylindrical body, but the slot area is different.

A standard slotted spring pin has a continuous slot without the serrated engagement feature. A serrated spring pin adds teeth or serrated sections along the slot. These teeth create additional mechanical engagement with the mating hole.

For a B2B buyer, the choice should depend on the required retention method. If radial spring force is enough, a conventional slotted spring pin may be suitable. If additional resistance to axial movement is required, a Serrated Spring Pin can be considered.

What Should Buyers Specify When Ordering Serrated Spring Pins?

A clear RFQ helps avoid receiving the wrong pin design. Buyers should normally provide:

• Pin diameter
• Pin length
• Heavy-duty or light-duty requirement
• Tooth or serrated profile
• Slot dimensions
• Material grade
• Hardness
• Surface treatment
• Mating-hole diameter
• Required quantity
• Packaging requirements

For OEM projects, a drawing or physical sample is the best reference. The supplier can review the hole fit, tooth geometry, insertion method, and required production tolerance before mass production.

Choosing a Serrated Spring Pins Manufacturer in China

The right supplier depends on the application and purchasing model. A machinery manufacturer may focus on retention and dimensional consistency. An automotive supplier may pay more attention to material, heat treatment, surface protection, and batch stability. A distributor may place greater weight on MOQ, packaging, standard sizes, and delivery time.

For companies sourcing Serrated Spring Pins in China, comparing the technical specification is more useful than comparing the product name alone. Different suppliers may use terms such as Tooth Spring Pin, Serrated Pin, Connex Pin, or Toothed Spring Pin for similar product structures.

Before placing a bulk order, confirm the exact profile, material, dimensions, tolerance, surface treatment, inspection requirements, and packaging. A sample approval is also useful when the pin will be installed by automated equipment or used in a high-volume OEM assembly.