Entex™ Tension Springs

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Stock Code	Material	Outside Diameter (mm)	Wire Diameter (mm)	Rate N/mm	Pull to Pull Length (mm)	Initial Tension N	Maximum Extension (mm)	More Details
2000	SS	3.18	0.36	0.31	12.7	0.67	13.72	View Product
2001	SS	3.18	0.46	1.17	12.7	2.31	7.37	View Product
2002	SS	3.18	0.36	0.16	19.05	0.67	25.91	View Product
2003	SS	3.18	0.46	0.63	19.05	1.73	13.72	View Product
2004	SS	3.18	0.36	0.11	25.4	0.67	38.61	View Product
2005	SS	3.18	0.46	0.43	25.4	1.69	20.07	View Product
2006	SS	3.18	0.36	0.08	31.75	0.67	50.55	View Product
2007	SS	3.18	0.46	0.32	31.75	1.69	26.42	View Product
2008	SS	3.18	0.36	0.07	38.1	0.67	64.01	View Product
2009	SS	3.18	0.46	0.26	38.1	1.73	34.04	View Product
2010	SS	4.78	0.51	0.36	19.05	1.16	23.11	View Product
2011	SS	4.78	0.61	0.92	19.05	2.45	13.72	View Product
2012	SS	4.78	0.71	2.07	19.05	4.27	9.91	View Product
2013	SS	4.78	0.51	0.22	25.4	1.16	36.58	View Product
2014	SS	4.78	0.61	0.57	25.4	2.4	22.61	View Product
2015	SS	4.78	0.71	1.33	25.4	4.31	15.49	View Product
2016	SS	4.78	0.51	0.16	31.75	1.16	50.55	View Product
2017	SS	4.78	0.61	0.43	31.75	2.45	30.23	View Product
2018	SS	4.78	0.71	0.98	31.75	4.31	20.07	View Product
2019	SS	4.78	0.51	0.13	38.1	1.16	64.01	View Product
2020	SS	4.78	0.61	0.34	38.1	2.4	38.61	View Product
2021	SS	4.78	0.71	0.77	38.1	4.23	25.65	View Product
2022	SS	4.78	0.51	0.11	44.45	1.16	78.74	View Product
2023	SS	4.78	0.61	0.28	44.45	2.4	45.47	View Product
2024	SS	4.78	0.71	0.64	44.45	5.6	24.38	View Product
2025	SS	4.78	0.51	0.09	50.8	1.16	94.23	View Product
2026	SS	4.78	0.61	0.24	50.8	2.4	55.12	View Product
2027	SS	4.78	0.71	0.54	50.8	4.23	36.58	View Product
2028	SS	4.78	0.51	0.07	63.5	1.16	117.6	View Product
2029	SS	4.78	0.61	0.18	63.5	2.49	68.83	View Product
2030	SS	4.78	0.71	0.43	63.5	4.27	46.48	View Product
2031	SS	4.78	0.51	0.06	76.2	1.16	148.59	View Product
2032	SS	4.78	0.61	0.15	76.2	2.49	87.12	View Product
2033	SS	4.78	0.71	0.34	76.2	4.27	58.93	View Product
2034	SS	6.35	0.71	0.61	25.4	2.4	24.64	View Product
2035	SS	6.35	0.81	1.23	25.4	4.45	18.28	View Product
2036	SS	6.35	0.92	2.35	25.4	6.9	12.45	View Product
2037	SS	6.35	0.72	0.33	38.1	2.63	46.73	View Product
2038	SS	6.35	0.82	0.66	38.1	4.36	34.54	View Product
2039	SS	6.35	0.92	1.25	38.1	6.81	23.37	View Product
2040	SS	6.35	0.72	0.22	50.8	2.71	69.09	View Product
2041	SS	6.35	0.82	0.46	50.8	4.32	51.56	View Product
2042	SS	6.35	0.92	0.86	50.8	7.03	33.78	View Product
2043	SS	6.35	0.72	0.17	63.5	2.63	91.44	View Product
2044	SS	6.35	0.82	0.35	63.5	4.45	65.79	View Product
2045	SS	6.35	0.92	0.65	63.5	6.85	45.97	View Product
2046	SS	6.35	0.72	0.14	76.2	2.63	115.82	View Product
2047	SS	6.35	0.82	0.28	76.2	4.36	82.55	View Product
2048	SS	6.35	0.92	0.53	76.2	6.81	55.63	View Product
2049	SS	7.95	0.92	1.34	25.4	4.58	18.29	View Product

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Coil Springs Direct are the UK’s only supplier of Entex™ specification tension springs. Our commitment to quality and precision makes us the trusted choice for many industries seeking reliable solutions – whether you require tension springs for industrial, automotive or bespoke applications, we have you covered.

Why choose our tension springs?

Our tension springs are manufactured to original Entex™ stock specifications that meet the highest industry standards. Our tension springs are made from high quality stainless steel and carbon steel to ensure durability and resilience under various stress conditions. The precision engineering of our tension springs guarantees optimal performance and longevity.

Key features

Diverse applications – our springs find applications in a wide range of industries and can provide solutions for many unique and diverse problems.
Customization options – our springs are available in a variety of Entex™ specifications which can suit the vast majority of uses. In the rare circumstances our springs don’t fit your requirements, then we also have a bespoke design and manufacture solution that can be used to help you.
Quality assurance - Rigorous quality control measures are in place to ensure each spring meets or exceeds industry standards. We are also ISO 9001 certified for our quality control systems.
Competitive pricing – Our ranges are competitively priced to ensure they are affordable, with bulk buy discounts available.

Industries we serve

Coil Springs Direct serves various industries with our premium tension springs, including:

Automotive
Manufacturing
Aerospace
Electronics
Construction
Medical

Understanding Tension Springs in Dynamic Systems

Tension springs are essential components in systems where controlled resistance and return force are required. They store energy when extended and release it to pull components back into their original position, making them ideal for applications like garage doors, trampolines and mechanical levers. Their reliability and versatility have made them a staple in both light and heavy-duty industries, offering consistent tension performance over time.

What Is a Spring Tensioner and When Is It Used?

A spring tensioner is a device that maintains consistent tension in a system by adjusting or absorbing movement over time. These are often paired with tension springs in conveyor belts, pulleys and industrial machinery where slack or vibration can impact performance. Using a spring tensioner alongside a correctly rated tension spring helps prevent wear, reduces maintenance needs and ensures smoother operation under varying loads.

Using a Tension Spring with Bolts for Custom Assemblies

When space or design requires a more secure setup, a tension spring with bolts can offer added stability and precision. These configurations are commonly used in adjustable assemblies, such as gates, hatches or equipment covers, where a bolted connection allows for a custom-fit solution. Whether you're working with standard or bespoke measurements, integrating bolts can increase anchoring strength without compromising the flexibility tension springs are known for.

How to choose the right tension spring

Selecting the right tension spring is crucial for the success of your project. Consider factors such as load requirements, environmental conditions, and application specifications. Our knowledgeable team is ready to assist you in choosing the perfect tension spring for your needs.

Contact Us for Custom Solutions

Have unique requirements? Our team specializes in providing custom tension springs tailored to your specific needs. Contact us today to discuss your project, and let us create the perfect solution for you.

Coil Springs Direct is your reliable partner for high quality tension springs. Explore our extensive catalogue or reach out for custom solutions, or reach out for custom solutions. Trust us for precision engineering, durability and exceptional performance in every tension spring.

Frequently Asked Questions

What is the purpose of a tension spring?

The purpose of a tension spring is to store energy and create resistance by pulling two components together. It operates under tensile force, extending when pulled and returning to its original shape when the force is released, ensuring a secure and controlled connection.

Do tension springs wear out?

Yes, tension springs can wear out over time due to constant stretching and relaxing, which may cause them to lose their elasticity. Factors such as excessive load, fatigue, and exposure to harsh environments can contribute to the deterioration of the spring's performance.

What is the difference between coil spring and tension spring?

A coil spring is a general term for any spring made from coiled wire, used to store energy and resist force in various applications, such as compression, tension, or torsion. A tension spring, specifically, is designed to withstand pulling forces and stretch to store energy, typically used in applications where components need to be pulled apart, like in garage doors or trampolines.

THE COIL SPRING EXPERTS!