---
product_id: 160348429
title: "Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool"
brand: "kester"
price: "₨273"
currency: SCR
in_stock: false
url: https://www.desertcart.sc/products/160348429-kester-44-rosin-core-solder-60-40-031-1-lb
store_origin: SC
region: Seychelles
---

# Instant wetting action Precise 0.031" diameter wire Rosin core flux, non-corrosive residues Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool

**Brand:** kester
**Price:** ₨273
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Solder smarter, not harder — join the pros who never settle for less!

## Quick Answers

- **What is this?** Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool by kester
- **How much does it cost?** ₨273 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/160348429-kester-44-rosin-core-solder-60-40-031-1-lb)

## Best For

- kester enthusiasts

## Why This Product

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

## Key Features

- • **Made in the USA:** Crafted domestically for consistent quality and performance you can trust
- • **Trusted Alloy Mix:** Classic 60/40 tin-lead composition balances flow and strength for flawless connections
- • **Precision Diameter:** 0.031" wire diameter for meticulous, professional-grade soldering 📏
- • **Rapid Wetting Power:** Experience lightning-fast solder joints even on tough nickel surfaces ⚡
- • **Clean & Reliable Flux:** Rosin core flux leaves non-corrosive residues, ensuring long-term circuit integrity 🧪

## Overview

Kester 44 Rosin Core Solder is a 1 lb spool of 60/40 tin-lead wire with a 0.031" diameter, featuring a high-activity rosin core flux that delivers instant wetting action and non-corrosive residues. Classified as ROL1 flux per J-Std-004, it ensures reliable, clean solder joints even on nickel surfaces, making it a top choice for professional and precision electronics work.

## Description

2

## Features

- Kester ""44"" 60/40 Solder Rosin ""44"" Is A High Activity Ra Core Flux Designed For Excellent Instant Wetting Action, Even On Nickel Surfaces.
- Although ""44"" Is A Ra-Based Material, The Residues Are Non-Corrosive If Not Cleaned. Per J-Std-004, ""44""
- Is Classified As Rom1 Flux. Type: Wire Alloy: 60/40 (60% Tin, 40% Lead) Description/Function: Wire Solder Diameter: 0.031" (1.57 Mm) Core Size: 66 Contains Lead: Yes
- Package Type: Spool Weight: 1 Lb Also Available In Diameter Size 0.062"".

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KESTER SOLDER |
| Item model number | 32117 |
| Product Dimensions | 7.62 x 12.7 x 10.16 cm; 453.59 g |
| ASIN | B00068IJPO |

## Images

![Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool - Image 1](https://m.media-amazon.com/images/I/81W0j7BlCML.jpg)
![Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool - Image 2](https://m.media-amazon.com/images/I/816DGNHO1EL.jpg)
![Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool - Image 3](https://m.media-amazon.com/images/I/81qmlk08XVL.jpg)
![Kester 44 Rosin Core Solder 60/40 .031 1 lb. Spool - Image 4](https://m.media-amazon.com/images/I/61HXZiLazDL.jpg)

## Questions & Answers

**Q: Is there a chart somewhere that says when/what to use 60/40 for and when to use 63-37 instead?**
A: the lower temp 63-37 is more prone to cracking although rarely is an issue.
60-40 is best if you are not concerned with the temp difference

**Q: I just received this solder and nowhere on the packaging does it indicate a rosin core. Directions also say to add flux, Is it in fact Rosin Core?.**
A: If the roll of solder you received from this page does not say: "44" ROSIN CORE - on the right side, in the yellow stripe, then it is not the solder you paid for.   I am 66 years old, learned to solder electronic components by having to complete a full 16 hour course during my electronics training in the USAF back when I had just hit 18.  ALL the solder provided to work on the aviation and aerospace gear I dealt with while in service was Kester "44" with 60/40 ratio.  PERIOD.  I still have a few empty spools from back then.  The only difference is they were metal spools back then, and the label was a paint-printed like a soda can.  BUT the label looked the same (1971-75) then as it does now.    It quite definitely says that is it rosin cored.   If the label is missing (can happen these days with printed paper labels and plastic spools that don't accept glue well)  you can test for rosin core by cutting off some of the tip (to remove the seal your solder iron left there)  and if you then heat the solder with an under-temp iron, the rosin should "bubble" out the open end before the lead/tin melts.

**Q: does anyone know how many meters does this comes with?**
A: The length is approximately between 380 to 400 feet or 115.8 to 121.9 meters per pound.

**Q: Would you use this solder for audio kit circuit boards like the wave "http://www.amazon.com/wave-analog-driven-spring-reverb/dp/b00r8jfblo/ref=sr_1_1"**
A: Kester SN60-/PB40 solder or Kester SN63/PB37 solder, 44 rosin core will both work well for audio and circuit board applications.

## Frequently Bought Together

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-26*