---
product_id: 23483813
title: "Prime-Line SP 9618 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.072 GA x 5/8 In. x 3-1/4 In., Single Loop Open, (2 Pack)"
brand: "prime-line"
price: "₨5376"
currency: LKR
in_stock: true
reviews_count: 13
category: "Prime Line"
url: https://www.desertcart.lk/products/23483813-prime-line-sp-9618-extension-spring-spring-steel-construction-nickel
store_origin: LK
region: Sri Lanka
---

# Corrosion-resistant nickel-plated finish Max load 19.1 lbs & 2.1 in deflection Durable spring steel construction Prime-Line SP 9618 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.072 GA x 5/8 In. x 3-1/4 In., Single Loop Open, (2 Pack)

**Brand:** prime-line
**Price:** ₨5376
**Availability:** ✅ In Stock

## Summary

> ⚡️ Elevate your DIY game with springs that stretch limits, not your patience!

## Quick Answers

- **What is this?** Prime-Line SP 9618 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.072 GA x 5/8 In. x 3-1/4 In., Single Loop Open, (2 Pack) by prime-line
- **How much does it cost?** ₨5376 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/23483813-prime-line-sp-9618-extension-spring-spring-steel-construction-nickel)

## Best For

- prime-line enthusiasts

## Why This Product

- Trusted prime-line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit for Every Task:** Exact 5/8 in diameter and 3-1/4 in length tailored for seamless integration in appliances, automotive, and more.
- • **Built to Last, Engineered to Perform:** Tempered spring steel ensures reliable stretch and retraction for all your projects.
- • **Heavy-Duty Strength with Flexibility:** Supports up to 19.1 lbs load with 2.1 in max deflection—perfect balance of power and resilience.
- • **Versatile 2-Pack for Double the Utility:** Two premium springs ready to tackle multiple repairs or creative mechanical contraptions.
- • **Sleek Nickel Finish for Indoor & Outdoor Use:** Corrosion-resistant plating keeps your springs looking sharp and functioning flawlessly in any environment.

## Overview

The Prime-Line SP 9618 Extension Spring is a high-quality, nickel-plated spring steel component designed for versatile household and professional use. Measuring 5/8 inch in diameter and 3-1/4 inches in length, it supports up to 19.1 pounds with a 2.1-inch deflection, making it ideal for appliances, automotive, marine, and mechanical applications. Sold in a convenient 2-pack, these corrosion-resistant springs combine durability and precision for reliable performance indoors and out.

## Description

These SP 9618 Handyman single loop closed extension springs are constructed of durable spring steel, and they come finished in a beautiful, corrosive-resistant, nickel-plated finish. Springs like these are used for a variety of household and professional applications, and they feature a generous deflection length of 2.01 inch. These springs are easy to install and are used by many. The outside diameters, lengths and gauge thicknesses vary between each of these springs, while their dependability does not. Use these springs for repairs around the house, in the office, vehicle, garage and in many other applications.

Review: Selection is Everything - Works well I'm the right application. Springs come in different lengths, thicknesses, and tensions. I used these to aid in the retraction of a lift chair and it has functioned well for months. Fit: Right ends and length. Less thickness. It works
Review: Great deal - heavy duty

## Features

- For use in a variety of applications; appliances, automotive, marine, toys, tools, mechanical devices, contraptions and more
- Spring dimensions: 5/8 inch outside diameter, 15/32 inch inside diameter, 3-1/4 inch length, 0.72 inch wire diameter, 19.1 pounds maximum safe load, 2.1 inch maximum deflection and come in a beautiful, corrosion resistant, nickel plated finish allowing them to be used both indoors and out
- Constructed of durable spring steel (tempered steel wire) to provide optimum retraction when stretched and designed for use with a variety of household and professional applications
- Things to take note of this item: the shape of each end of the spring, how far will it stretch (deflection), length of the spring measured from the ends of the hooks and how much weight can it support
- Please refer to the line art drawing for dimensions and compare with your original item before purchasing (Not universal)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008RG9E0Q |
| Best Sellers Rank | #191,023 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #95 in Garage Door Springs & Wires |
| Brand | PRIME-LINE |
| Color | Nickel |
| Compatible Groove Diameter | 0.63 inches |
| Customer Reviews | 4.4 out of 5 stars 289 Reviews |
| Fastener Type | Extension Spring, Single Loop Open |
| Finish Types | Nickel |
| Global Trade Identification Number | 00049793096180 |
| Included Components | Extension Spring |
| Item Diameter | 0.63 inches |
| Item Dimensions | 0.63 x 0.63 x 3.25 inches |
| Item Type Name | Extension Spring |
| Item Weight | 1.6 ounces |
| Manufacturer | Prime-Line Products |
| Material | Steel |
| Material Type | Steel |
| Maximum Shear Strength | 25000 psi |
| Model | SP 9618 |
| Number Of Items | 1 |
| Number of Pieces | 2 |
| Outside Diameter | 0.63 inches |
| Part Number | SP 9618 |
| Pin Type | Spring |
| Pin type | Spring |
| Screw Head Style | Open |
| Size | 5/8 in. x 3-1/4 in. |
| Size Name | 5/8 in. x 3-1/4 in. |
| UPC | 049793096180 |
| Unit Count | 1 Count |
| Warranty Description | Goods are warranted against manufacturing defects for 1 year. |

## Product Details

- **Brand:** PRIME-LINE
- **Item Diameter:** 0.63 inches
- **Material:** Steel
- **Pin type:** Spring
- **Size:** 5/8 in. x 3-1/4 in.

## Images

![Prime-Line SP 9618 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.072 GA x 5/8 In. x 3-1/4 In., Single Loop Open, (2 Pack) - Image 1](https://m.media-amazon.com/images/I/514+58bdEOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Selection is Everything
*by T***M on June 25, 2025*

Works well I'm the right application. Springs come in different lengths, thicknesses, and tensions. I used these to aid in the retraction of a lift chair and it has functioned well for months. Fit: Right ends and length. Less thickness. It works

### ⭐⭐⭐⭐⭐ Great deal
*by C***R on May 8, 2026*

heavy duty

### ⭐⭐⭐⭐⭐ Ram 2500hd throttle return spring
*by I***R on March 1, 2026*

I have a 94 ram 2500hd, Cummins. I tried so many springs to replace the throttle return spring, including the official oem springs. None worked. This 9618 spring was the perfect length and force.

## Frequently Bought Together

- Prime-Line SP 9618 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.072 GA x 5/8 In. x 3-1/4 In., Single Loop Open, (2 Pack)
- Prime-Line SP 9620 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.105 GA x 3/4 In. x 3-1/8 In., Single Loop Open, (2 Pack)
- Prime-Line SP 9624 Extension Spring, Spring Steel Construction, Nickel-Plated Finish, 0.120 GA x 13/16 In. x 4 In., Single Loop Open, (2 Pack)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-09-20*