DIN1481 Carbon Steel Black Oxide Straight Pin Steel Slotted Spring Pins Cotter Pin Split Pin
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Product Details
| Customization: | Available |
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| Material: | Carbon Steel |
| Surface Finishing: | Black Oxide |
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1-402 Intelligence Innovation Park, No36 Changsheng Road, Jiaxing, Zhejiang, China
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Basic Info.
- Model NO.
- Cotter Pin
- Customized
- Non-Customized
- Name
- DIN1481 Spring Pin
- Brand Name
- Goshen
- Samples
- Free
- Delivery Time
- 3~20days
- Payment Term
- L/C&T/T
- Packing
- Carton + Pallet
- Transport Package
- Carton + Pallet
- Specification
- M6-M40
- Trademark
- Goshen
- Origin
- Jiaxing Zheng, China
- HS Code
- 7318159090
- Production Capacity
- 50ton/ Weeks
Packaging & Delivery
- Package Size
- 25.00cm * 16.00cm * 10.00cm
- Package Gross Weight
- 22.000kg
Product Description
Product Description
Detail shot
This is an elastic cylindrical locking pin, also known as a spring pin, rolled elastic pin or slit pin sleeve. It is made from 65Mn spring steel or 304 stainless steel strip through precise rolling and heat treatment. The surface is treated with blackening or natural passivation. The product is in a thin-walled cylindrical shape, with a long rectangular opening along the axial direction. It achieves interference fit with the mating hole by relying on the elastic deformation of the material. When the pin body is pressed into the hole, the opening contracts, causing the outer diameter to decrease. The material's elastic rebound force generates uniform radial pressure on the hole wall, forming a reliable friction locking. This "elastic self-tightening, no need for processing slots" design makes it an economical and universal positioning element for replacing solid pins and keyway pins, and is widely used in rapid assembly and anti-loosening positioning in mechanical equipment, automotive electronics, tooling fixtures, furniture hardware, and other fields.
feature
Assembly is simple and efficient.
No precise alignment of the pin hole direction is required. Pushing in at any angle is sufficient. The assembly time is only 1/5 of that of traditional cylindrical pins, suitable for rapid insertion in automated production lines, and the overall efficiency is significantly improved.
Cost is economical and low.
The rolled process has a high material utilization rate, low production costs, and the unit price is only 1/3 to 1/2 of the solid positioning pins. The cost reduction effect is obvious when used in large quantities.
Excellent vibration and loosening prevention
The elastic pressure continuously acts on the pin hole wall, and no fitting clearance is generated under vibration conditions. It naturally has the ability to prevent loosening, and no additional anti-loosening washers or pins are required.
Strong tolerance compensation capability
The elastic deformation can absorb the manufacturing error of the hole diameter. The tolerance band of the mating hole can be relaxed to H9, reducing the processing accuracy requirements of the connected parts and reducing the scrap rate.
No damage during disassembly and reusable
Using a punch to strike from one end, it can be ejected without damaging the surface of the mating hole. The pin body can be reused multiple times, and the maintenance cost is lower than that of one-time used opening pins or conical pins.
No precise alignment of the pin hole direction is required. Pushing in at any angle is sufficient. The assembly time is only 1/5 of that of traditional cylindrical pins, suitable for rapid insertion in automated production lines, and the overall efficiency is significantly improved.
Cost is economical and low.
The rolled process has a high material utilization rate, low production costs, and the unit price is only 1/3 to 1/2 of the solid positioning pins. The cost reduction effect is obvious when used in large quantities.
Excellent vibration and loosening prevention
The elastic pressure continuously acts on the pin hole wall, and no fitting clearance is generated under vibration conditions. It naturally has the ability to prevent loosening, and no additional anti-loosening washers or pins are required.
Strong tolerance compensation capability
The elastic deformation can absorb the manufacturing error of the hole diameter. The tolerance band of the mating hole can be relaxed to H9, reducing the processing accuracy requirements of the connected parts and reducing the scrap rate.
No damage during disassembly and reusable
Using a punch to strike from one end, it can be ejected without damaging the surface of the mating hole. The pin body can be reused multiple times, and the maintenance cost is lower than that of one-time used opening pins or conical pins.
Specification
Material | The hardness of 65Mn spring steel after quenching and tempering is HRC 42-50, with excellent elasticity and low cost; 304/316 stainless steel is corrosion-resistant and non-magnetic, suitable for food, medicine and outdoor environments; phosphor bronze is used in conductive or anti-magnetic applications. |
Diameter | Standard type M1.5 to M50, commonly used M3 to M20, with diameter tolerance of grade m6, and it forms a fit of 0.01 to 0.04 millimeters of interference with H7 holes. |
Wall thickness | Single-layer thickness ranges from 0.3 to 2 millimeters, double-layer total thickness ranges from 0.6 to 4 millimeters. Three layers are used for heavy-load impact scenarios. The number of layers is indicated on the packaging label. |
Slot-style | Standard straight grooves, inclined grooves (for easy one-way disassembly), fish-scale grooves (to increase friction), and the groove width is usually 8% to 12% of the outer diameter. Surface treatment |
Application Scenario
Application
Automobile chassis connection
Hinge positioning of steering knuckle, suspension arm, and stabilizer bar, elastic pins absorb road impact and vibration, preventing looseness of the connection. Double-layer heavy-duty specifications meet load requirements.
Mechanical equipment positioning
Radial positioning of gears, pulleys, couplings and shafts, replacing key connections simplifies processing, reliable torque transmission in light-load drives, axial fixation with matching retaining rings.
Electronic and electrical assembly
Locating pins for radiators, circuit board brackets, and plastic housings, stainless steel material has no magnetic effect and does not interfere with circuits, elastic clamping avoids plastic part cracking caused by interference fit assembly.
Tooling and fixtures quick change
Locating benchmarks and quick-change pins for welding fixtures and assembly fixtures, frequent disassembly does not affect accuracy, replacement cost is low after wear of pin bodies.
Furniture hardware connection
Hinge shaft pins for folding chairs and storage racks, installation is simple, users can repair themselves, elastic pre-tightening eliminates clearance between components to avoid shaking and abnormal noise.
Medical device disinfection
Hinge pins for surgical instruments and disinfection boxes, stainless steel material can withstand high-temperature and high-pressure steam disinfection, no risk of coating detachment and contamination.
Hinge positioning of steering knuckle, suspension arm, and stabilizer bar, elastic pins absorb road impact and vibration, preventing looseness of the connection. Double-layer heavy-duty specifications meet load requirements.
Mechanical equipment positioning
Radial positioning of gears, pulleys, couplings and shafts, replacing key connections simplifies processing, reliable torque transmission in light-load drives, axial fixation with matching retaining rings.
Electronic and electrical assembly
Locating pins for radiators, circuit board brackets, and plastic housings, stainless steel material has no magnetic effect and does not interfere with circuits, elastic clamping avoids plastic part cracking caused by interference fit assembly.
Tooling and fixtures quick change
Locating benchmarks and quick-change pins for welding fixtures and assembly fixtures, frequent disassembly does not affect accuracy, replacement cost is low after wear of pin bodies.
Furniture hardware connection
Hinge shaft pins for folding chairs and storage racks, installation is simple, users can repair themselves, elastic pre-tightening eliminates clearance between components to avoid shaking and abnormal noise.
Medical device disinfection
Hinge pins for surgical instruments and disinfection boxes, stainless steel material can withstand high-temperature and high-pressure steam disinfection, no risk of coating detachment and contamination.
Main Product
Standard parts and non-standard parts
We are a specialized manufacturer and exporter of both standard and custom-engineered hardware fasteners, serving global markets with precision-engineered solutions. Our standard product portfolio encompasses a comprehensive range of stainless steel, carbon steel, and alloy fasteners—including bolts, nuts, screws, washers, and pins—compliant with international standards such as DIN, ISO, ANSI, and JIS, ensuring seamless integration into your existing supply chains. Simultaneously, our non-standard customization capabilities leverage advanced CNC turning, milling, and cold forging technologies to transform your unique designs into high-precision components, from complex geometries to specialized material specifications. With certifications including ISO 9001 and IATF 16949, we serve diverse industries spanning oil and gas, marine engineering, renewable energy, medical devices, and precision instrumentation. Our integrated manufacturing facility enables us to deliver everything from rapid prototyping and small-batch production to high-volume manufacturing, with full material traceability, dimensional inspection reports, and flexible logistics solutions including FOB, CIF, and DDP delivery terms. Whether you require off-the-shelf standard fasteners or bespoke engineered components, we provide end-to-end technical support—from design for manufacturability (DFM) consultation to final quality validation—ensuring your projects receive hardware solutions that meet exacting specifications, competitive lead times, and consistent quality standards.
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