Mushroom-Shaped Cross-Hole Positioning Pin

Product introduction

Mushroom head transverse hole positioning pins are typical special-shaped stainless steel parts. Its structural features are: the head adopts a mushroom-shaped handle design, which is convenient for manual grabbing and operation; the rod is equipped with a transverse through hole (transverse hole), which can be used to penetrate the anti-falling pin or steel wire rope to achieve the anti-falling function.

 

As a non-standard part, the key breakthroughs of this product are:

Mushroom head handle: increases the holding area, making it easy to operate even when wearing gloves

Horizontal through holes: can be used with cotter pins and steel wire ropes to prevent the positioning pin from accidentally falling off in a vibrating environment

Precise positioning function: the pin body and the hole position are precisely matched to ensure the precise positioning of the workpiece or mold

Compared with ordinary cylindrical pins or tapered pins, this product is developed for high-frequency operating conditions such as quick disassembly and assembly and prevention of falling off. It is a high-frequency demand category in the field of customized non-standard fasteners.

 

Mushroom-head cross-hole positioning pins are non-standard parts and can produce cold-headed non-standard parts, 304 non-standard parts, and special-shaped stainless steel parts. It supports the development of customized non-standard fasteners and can be used as precision automotive parts fasteners. The product adopts a mushroom head integrated structure, and a horizontal through hole is reserved for the pin shaft to facilitate the insertion of the circlip to achieve anti-falling positioning. It is formed by cold heading and precision turning processes, with precise dimensional tolerances. Manufacturers can flexibly adjust the head size, pin diameter, transverse hole position, and total length based on drawings and samples to create various special-shaped stainless steel parts. Available in carbon steel, 304 stainless steel and other materials, it is widely used in automobile assemblies, automation equipment, and tooling fixtures. We can provide one-stop services from sample trial production to mass production, and continue to provide reliable customized non-standard fastener solutions to global buyers.

 

Materials and application fields

304 non-standard parts (stainless steel 304), corrosion resistance, excellent overall performance, medical equipment, food equipment, outdoor facilities

Stainless steel 316, pitting corrosion resistance, seawater corrosion resistance, marine engineering, chemical equipment

Alloy steel (SUJ2), high hardness, wear resistance, precision molds, tooling fixtures

 

Core application scenarios (extensive use of automotive parts fasteners and non-standard parts):

Automobile manufacturing: rapid positioning and locking of tooling fixtures

Mold industry: template positioning of injection molds and die-casting molds

Mechanical equipment: positioning and fixing of machine tool fixtures and inspection tools

Automated production line: positioning devices that require frequent disassembly and assembly

When standard locating pins cannot meet fall-off resistance, ease of operation, or size requirements, custom non-standard fasteners are the optimal solution.

 

Quality control and certification system

Full inspection of geometric dimensions:

The outer diameter of the mushroom head, the diameter and position of the cross hole, and the diameter of the pin body are 100% inspected by an image screening machine.

The tolerance level can reach ±0.005mm, meeting precision positioning requirements.

 

Mechanical property testing:

Hardness testing (can be heat treated to HRC 45-55)

Shear strength test

Surface and anti-corrosion:

Salt spray test (304 material neutral salt spray ≥96 hours)

Surface roughness detection (Ra≤0.8μm)

Certification system:

ISO 9001:2015

IATF 16949 (applicable to bulk supply of automotive parts fasteners)

RoHS/REACH Compliance

 

Customized services (focus on non-standard customization)

We focus on the R&D and mass production of customized non-standard fasteners. We can provide the following customization directions for mushroom head cross hole positioning pins:

Mushroom head parameters are non-standard: diameter, thickness, and handle texture can be designed as needed

Non-standard cross-hole parameters: aperture diameter, position, quantity (single hole/double hole) can be customized

Pin body dimensions are non-standard: diameter, length, and taper are manufactured according to customer drawings

Non-standard materials and surfaces: 304, 316, titanium alloy, etc. optional; surface can be galvanized, nickel plated, passivated, polished

Cold heading non-standard parts: The cold heading non-standard parts process can be used for small batches, and cold heading can be used for large batches, with lower cost and better consistency.

Customers provide 2D/3D drawings, samples or assembly descriptions. We provide full-process services from cold heading/turning mold development, heat treatment, surface treatment to mass production.

 

FAQ

Q: What is the difference between mushroom head cross hole positioning pin and ordinary cylindrical pin?

A: Ordinary cylindrical pins are just simple cylinders, while this product is a stainless steel part with a special shape - the mushroom head is convenient for manual operation, and the transverse hole can be inserted into the anti-falling pin to achieve the anti-falling function. It is especially suitable for positioning scenarios with frequent disassembly and assembly.

 

Q: What is the corrosion resistance of positioning pins made of 304 material?

A: 304 non-standard parts have good corrosion resistance and are suitable for most indoor and general outdoor environments. If used in seawater or strong acid-base environment, it is recommended to upgrade to 316 material.

 

Q: Can this kind of positioning pin be used in automobile parts assembly?

A: Absolutely. This type of positioning pin is widely used in automotive tooling fixtures and inspection tools. It is a typical application of automotive parts fasteners and can meet the requirements of IATF 16949 quality system.

 

Q: What is the function of the cross hole?

A: The transverse hole is used to penetrate cotter pins, wire ropes or R-shaped pins to prevent the positioning pins from withdrawing and falling off during working vibration. It is a function-enhanced design for customizing non-standard fasteners.

 

Q: What is the minimum order quantity? Can I make a sample?

A: The minimum quantity for sample stage is 200-500 pieces; the minimum quantity for bulk order is 5,000 pieces. For the cold heading process of non-standard parts, special mold opening is required, and the minimum order quantity can be negotiated.

 

Q: Can the color or logo of the mushroom head handle be customized?

A: Yes. We can laser mark, sandblast or color oxidize the mushroom head surface to meet customers' brand recognition needs.

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