HI on the 1.0 x 12'' extension spring there are 2 lengths one is 12in closed I need the max expanded length? I need to it to expand 32inches

It looks like this only extends to about 24". Starts at 12" collapsed length and has a suggested max deflection of about 12". Also suggested max load rating, if you need it, is about 35 pounds.

Can this be used on a french door to hang a curtain panel; needs to extend o 24 inches?

I think so. It's recommended maximum extension is 24" so your right at the end what it's rated for.

Is this spring galvanized?

Close, it's not galvanized but zinc plated instead.

C 303 Extension Springs 12 | Desertcart Nicaragua

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

C$1716

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Nicaragua.

Secure transaction

Description

⚙️ Tension perfected — spring into action with Century’s C-303!

PROUDLY MADE IN THE USA - Support domestic manufacturing with trusted quality and reliability.
PRECISION 12 INCH LENGTH - Ideal for exact tensioning needs, especially in complex setups like sail shades.
PREMIUM SPRING STEEL WIRE - Engineered for long-lasting resilience and consistent performance.
VERSATILE INDUSTRIAL GRADE - Perfect for mechanical, industrial, and DIY projects demanding precision and strength.
ROBUST 35 4 LB LOAD CAPACITY - Handles heavy-duty tension without compromising durability or safety.

The Century Spring C-303 Extension Spring is a 12-inch, industrial-grade spring made from durable spring steel wire. It supports a maximum safe load of 35.4 pounds, ensuring reliable tensioning for applications like sail shades and mechanical assemblies. Manufactured in the USA, it combines precision engineering with domestic quality standards, making it a trusted choice for professionals and DIY enthusiasts alike.

Specifications

ASIN	B000BDB6X6
Best Sellers Rank	#164,659 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #103 in Mechanical Extension Springs
Brand	Century Spring
Brand Name	Century Spring
Color	Silver
Customer Reviews	4.3 out of 5 stars 64 Reviews
Global Trade Identification Number	00038594003039
Included Components	Century Spring - C-303
Item Dimensions	1 x 1 x 12 inches
Item Type Name	Century Spring - C-303
Item Weight	23 g
Item dimensions L x W x H	1 x 1 x 12 inches
Manufacturer	Century Spring
Manufacturer Part Number	Century Spring - C-303
Material	Spring Steel Wire
Material Type	Spring Steel Wire
Model Number	Century Spring - C-303
Number of Items	1
Number of Packs	1
Number of Pieces	1
UPC	038594003039
Unit Count	1 Count

Reviews

S**H

Made in USA

Just perfect for my use, which is tensioning the corner of a triangle-shaped sail shade. Those sail shades are frustrating to tighten at the corners. And one spring itself is almost the cost of a shade. Thanks to Century for continuing production in the USA.

29.04.2024

K**R

worked great

nice product worked great

2.09.2021

A**.

Diameter and tension just what I needed.

Good quality spring used it in a 3d router set up .

29.08.2018

J**G

Five Stars

I bought this to lift my standing desk. It did exactly what I expect.

31.03.2018

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

C$1716

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Nicaragua.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago