Spring Pins (or tension pins or roll pins) are mechanical fasteners that are very common in engineering practice and industry in general to ensure that two or more parts maintain their relative location. These pins are uniquely designed to provide flexibility, long life and excellent holding capacity in diverse mechanical assemblies. Rajgranth Fasteners, a renowned manufacturer, exporter, suppliers, and stockists of Spring Pins, provide the best quality fastening solutions that are reliable in the industries.
Being a renowned manufacturer of Spring Pin, Rajgranth Fasteners can guarantee its products to meet the international quality standards. These pins also come in a variety of materials that include stainless steel, carbon steel, and also alloy steel that guarantees high performance and longevity, as well as wear and tear resistance. We have a variety of Spring Pins that are designed for this purpose; to offer good vibration resistance and installation facilities.
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As a reputable exporter and supplier of Spring Pin, Rajgranth Fasteners is serving various industries such as automotive, aerospace, machinery, construction, defense, and heavy equipment manufacturing. Due to the versatility of Spring Pins, they can be used in both light-duty and heavy-duty fastening. Depending on the industry specifications, our products come in different finishes such as plain, zinc-plated, black oxide, and customized finishes.
Rajgranth Fasteners is another most popular Spring Pin stockist which has a huge stock to cover the urgent bulk orders. We are also fully dedicated to quality, accuracy and customer satisfaction which has earned us a good reputation amongst international clients. Our Spring Pins are manufactured with high technology and undergo stringent testing, ensuring that all the Spring Pin that we provide is of the right size and strength.
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We also boast of being among the most reliable Spring Pin suppliers in India and the world at large, and we do not cut corners just to provide affordable solutions to our customers. Rajgranth Fasteners guarantees that whether the pins are of standard sizes or custom made, they are delivered on time and perform uniformly in any application. Through our extensive network of distribution outlets we are able to reach out to industries in Asia, Europe, Middle East, and other parts of the world efficiently.
With Rajgranth Fasteners, one will be connected to a manufacturing company and exporter of Spring Pins that focuses on innovation, quality and reliability. As a company with years of experience in the fasteners industry, we never cease to add new products into our collection as the needs of the modern engineering and manufacturing industries grow and grow.
Specifications
| Standard / Type | Material | Taper Ratio | Diameter Range | Length Range | Finish | Notes / Typical Features |
|---|---|---|---|---|---|---|
| DIN 1 (metric solid taper pin) | Carbon steel / Stainless steel | 1:50 (metric DIN 1) | Φ2 – Φ50 mm (typical ranges available) | Approx. 6 mm – 200+ mm (varies by supplier) | Plain / Zinc / Phosphate / Passivated (SS) | Nominal diameter usually measured at the large end; used for alignment & fastening. |
| DIN 2339 / ISO variant (form B) | Carbon steel, alloy steel, stainless | Metric taper per standard (≈1:50) | Common metric sizes Φ6,8,10,12,16,20… | Supplier dependent; see catalogues for exact OAL / tolerance | Plain / plated / passivated | Available in plain, tapped or with internal/external thread options. |
| DIN 7978 (Spring Pins with internal thread) | Carbon steel / Stainless | As specified in DIN 7978 | Φ6 – Φ50 mm (grouped ranges) | Typical OAL by diameter group (see standard) | Plain / plated | Includes tapped end or internal thread option for easier removal. |
| Imperial / Inch Spring Pins (ANSI / common shop sizes) | Carbon steel, stainless | Common imperial taper ≈ 1:48 (industry common) | 1/16" up to 1"+ (fractional increments and special sizes) | Short to long — vendor dependent | Plain / plated | Widely stocked by industrial suppliers (McMaster, Huyett, etc.). |
Spring Pins Standards & Size Range
| Size Range | Standards |
|---|---|
| Imperial Diameters: 1/8" to 1/2" | ASME B18.27 – U.S. standard for slotted and coiled spring pins |
| Metric Diameters: Custom M2 to M12 | ISO 8753 – Standard for metric spring pins |
| Lengths: 1/2" to 4" | ISO 8752 – Standard for heavy-duty coiled pins |
| DIN 1481 – German standard for slotted tension pins |
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Carbon Steel & Hardened Steel | Class 5.8, 8.8, 10.9 | ISO 8752, DIN 1481, ASME B18.27 |
| Stainless Steel (Corrosion Resistant) | A2-70 (SS 304), A4-80 (SS 316) | ISO 3506, ISO 8753 |
| Alloy Steel (High Fatigue Strength) | Class 10.9, 12.9 | ISO 8752, DIN 1481 |
| Phosphor Bronze & Brass (Non-Corrosive & Electrical Applications) | Custom Hardness Ratings | ISO 8752, ASME B18.27 |
Applications and Uses of Spring Pins
- Oil and Gas Industry
- Mining
- Construction
- Power Plant
- Refinery Industry
- Sugar Mills
- Ship Building Industry
- Marine Industry
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