Description

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When mechanical assemblies require a secure physical shoulder stop to prevent over-insertion and handle high axial thrust forces, our Stepped Shank Ball Stud is the ultimate choice. Engineered with two or more distinct diameters along the shank, this specialized Stepped Shank Ball Stud creates a physical structural ledge that seats perfectly against the housing face. This stepped design ensures precise axial positioning, prevents the ball head from migrating under heavy compression, and allows for a transition to a smaller thread diameter on the locking end, making it highly effective for heavy-duty suspension linkages and rear axle assemblies.

We manufacture the Stepped Shank Ball Stud inside our modern, IATF 16949-certified facility using multi-station cold heading and high-precision cylindrical grinders. Achieving precise concentricity between the different shank steps is critical, as any misalignment can cause localized stress concentrations and premature failure. Our 20-person engineering team utilizes advanced finite element analysis (FEA) to verify the transition radii, ensuring optimal fatigue resistance. Partnering with us gives your brand access to a world-class automotive component that excels in safety, durability, and installation precision.

Technical Specifications

Step Configuration	Dual or multi-diameter stepped shank with customizable transition radii
Thread Portion	Precision rolled external threads on the smaller step segment
Material	High-tensile 40Cr, 40CrMo, or 45# carbon steel
Spherical Finish	Super-finished ball head (Ra ≤ 0.15 μm)
Tensile Grade	Meets or exceeds automotive class 8.8, 10.9, or 12.9 strength requirements

Application Areas

Rear Axle Suspensions

Anchors control linkages securely to the rear chassis under high axial loads.

Double Wishbone Suspensions

Connects upper and lower control arms to structural suspension components.

Heavy Machinery Linkages

Provides robust pivot connections in heavy agricultural and industrial equipment.

Customization Capabilities

We specialize in flexible manufacturing solutions. Whether you require a unique stepped shoulder, a localized cross-drilled hole for cotter pins, or a specific grade of stainless steel for marine environments, our in-house engineering team is ready to assist. We can develop physical prototypes based on your CAD blueprints or old parts within 7 to 15 days, minimizing your time-to-market.

Packaging & Shipping

Inner Protection

Individually coated with high-grade anti-rust oil, wrapped in thick protective bubble bags, and placed in individual custom paper boxes to prevent thread chafing.

Outer Packing

Packed in heavy-duty five-layer corrugated master cartons (standard gross weight under 25kg per carton) and secured on solid wooden pallets with stretch wrap.

Shipping Terms Supported

EXW, FOB, CIF, and full DDP door-to-door delivery with customs clearance and duty pre-paid.

FAQ

Q1: Can the step transition feature a specific radius to reduce stress concentration?

A: Yes, we can grind precise radius transitions between the steps to minimize stress risers, significantly extending the fatigue life of the shank under high-vibration loads.

Q2: What is your standard payment term for custom-made stepped orders?

A: For custom items requiring new molds, the mold fee is paid upfront. Product payment is typically 50% deposit upon order confirmation, and the remaining 50% balance paid after sample approval, mass production completion, and final inspection prior to shipping.

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