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Custom convex springs manufactured to your exact specifications. Fastdep produces high-quality hourglass-shaped compression springs in India for automotive, industrial, and commercial applications.
Using the wrong convex spring can lead to equipment failure, inconsistent performance, excessive wear, and costly downtime. Standard springs often don’t deliver the correct load, dimensions, or service life needed for demanding applications.
A custom convex spring is designed specifically for your product, ensuring the right spring force, precise fit, and reliable performance from the first installation.
Whether you’re replacing a discontinued spring, developing a new product, or improving an existing design, custom convex springs help eliminate fitting issues, reduce maintenance, and increase equipment reliability.
A spring designed for your application helps you:
Custom convex springs are commonly used in:
Simply share your drawing, sample, or required dimensions. We’ll provide a convex spring designed to fit your application, perform reliably, and help prevent costly failures.
For non-standard or engineered requirements.
One platform for standard fasteners, bulk procurement, and custom manufacturing
Browse live stock, see real prices, and place orders instantly. No waiting for callbacks or email quotes.
Submit an RFQ for bulk orders. Get tiered pricing that drops as your quantity grows. Plan budgets with numbers you can trust.
Upload your drawing. We manufacture to your exact requirements — materials, grades, tolerances, finishes. One source for standard and custom.
Our team understands tensile strength, thread standards, and material compatibility. Get technical answers, not catalog numbers.
Material grade, thread size, tensile strength, coating, dimensions. The technical data you need to spec correctly — right on the product page.
Compliant tax invoices with HSN codes. Input tax credit support. B2B documentation that your accounts team will actually accept.
Continuously expanding with new fastener SKUs, sizes, materials, grades, finishes, and industry standards to support more industrial applications.
Need a convex (hourglass-shaped) compression spring manufactured to your exact specifications? Share your drawing, sample, or the details below, and we’ll provide an accurate quotation for your custom spring.
| Specification | Details |
|---|---|
| Product | Convex Spring (Hourglass Compression Spring) |
| Wire Diameter (D) | Thickness of the spring wire |
| Large Diameter (SDL) | Inner Diameter (ID) or Outer Diameter (OD) at both ends |
| Small Diameter (SDS) | Inner Diameter (ID) or Outer Diameter (OD) at the center |
| Free Length (L) | Overall spring length before compression |
| Pitch (P) | Distance between adjacent coils |
| Material | Spring Steel, Stainless Steel (SS304/SS316), Brass, or other specified material |
| Surface Finish | Plain, Zinc, Black Oxide, Nickel, Chrome, Powder Coating, or custom finish |
| Order Quantity | Minimum order starts from 10 pieces (varies based on spring specifications) |
Simple four-step process from requirements to delivery.
Send us your engineering drawing, CAD file, or physical sample with specifications.
Our engineering team reviews your requirements and provides a detailed quote within 24-48 hours.
Review and approve the quotation, confirm specifications, pricing, and delivery timeline.
We manufacture and deliver your custom components to your location across India.
Share your specifications and get a quote for custom-manufactured springs designed for your application.