---
product_id: 597016232
title: "UV Resistant - Heavy Duty Outdoor Thread for Hand or Machine Sewing - Simthread 100% Polyester Bonded Thread Tex 69 (12wt) - 250 Yards x 2 Spools NP-Black"
brand: "simthread"
price: "$26.91"
currency: USD
in_stock: true
reviews_count: 13
category: "Simthread"
url: https://www.desertcart.ec/products/597016232-uv-resistant-heavy-duty-outdoor-thread-for-hand-or-machine
store_origin: EC
region: Ecuador
---

# 12WT heavy-duty bonded polyester UV resistant for outdoor durability Compatible with machine & hand needles UV Resistant - Heavy Duty Outdoor Thread for Hand or Machine Sewing - Simthread 100% Polyester Bonded Thread Tex 69 (12wt) - 250 Yards x 2 Spools NP-Black

**Brand:** simthread
**Price:** $26.91
**Availability:** ✅ In Stock

## Summary

> 🧵 Sew Strong, Stay Bold: The Thread That Outlasts the Sun

## Quick Answers

- **What is this?** UV Resistant - Heavy Duty Outdoor Thread for Hand or Machine Sewing - Simthread 100% Polyester Bonded Thread Tex 69 (12wt) - 250 Yards x 2 Spools NP-Black by simthread
- **How much does it cost?** $26.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/597016232-uv-resistant-heavy-duty-outdoor-thread-for-hand-or-machine)

## Best For

- simthread enthusiasts

## Why This Product

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

## Key Features

- • **Dual-Spool Value Pack:** Get 500 yards total with two 250-yard spools—perfect for large projects or multiple repairs without interruption.
- • **Versatile Compatibility:** Works effortlessly with heavy-duty machine needles (size 16-18) and hand needles (sizes 1-5), adapting to your preferred sewing method.
- • **Ultimate Weatherproofing:** Colorfast and UV resistant, ideal for outdoor upholstery, tents, sails, patio cushions, and more—built to brave the elements.
- • **Unmatched Outdoor Strength:** 12WT bonded polyester thread engineered to resist UV degradation, ensuring long-lasting performance in sun-exposed environments.
- • **Seamless & Lint-Free Finish:** No joints and zero lint for smooth machine operation and flawless stitch quality every time.

## Overview

Simthread’s 12WT bonded polyester thread offers superior UV resistance and heavy-duty strength, making it the go-to choice for outdoor sewing projects. With 500 yards across two spools, seamless construction, and compatibility with a wide range of needles, it’s engineered to deliver durable, weatherproof stitching for everything from tents to patio cushions.

## Description

Shop Simthread at the desertcart Arts, Crafts & Sewing store. Free Shipping on eligible items. Save on everyday low prices.

Review: Sturdy thick thread! - The polyester thread was nice, thick and sturdy - no breakage! It worked great with a heavy duty machine needle (100/18). It required my sewing machine tension set at level 7 which made a lovely zigzag finishing stitch on the perimeter of the fabric I purchased to make a gray waterproof canopy replacement cover for my outdoor swing! Would have liked a gray colored thread but the black thread made a pretty contrast. Was well worth the cost!
Review: Quality thread - It works great and was just as it was advertised.

## Features

- 12WT Bonded Polyester Outdoor Thread. Improved resistance to strength loss from UV exposure over standard polyester filament thread. No lint. No joint. Outdoor Living Thread
- This high quality thread is ideal for sewing and repairing sturdy fabrics and materials, directly from the suppliers who serving sewing threads to famous car brands for car seat covers in the market.
- This contains black Thread, 250 Yards per snap spools, 2 spools. It is UV resistant to withstand exposure to the elements. Available in variety of colors (each sold separately, 8 color kit available).
- It is made from raw material filament polyester thread size in TEX 69, finished thread size in TEX 90 (12WT) after twisting and bonded etc. With machine needle size16 or 18, it is Compatible with most sewing machines. Recommended hand Needle size: 1, 2, 3, 4 or 5.
- As a strong, tough, heavy duty thread, it is ideal for canvas sails, tents, outdoor furniture and awnings. UV resistant and colorfast so it can withstand exposure to the elements. Great for indoor/outdoor upholstery, furniture and for sewing any outdoor project such as patio cushions, pillows, grill covers, umbralla, sails, tents, outdoor furniture, awnings and more.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGV2HK8X |
| Batteries required | No |
| Best Sellers Rank | #2,031 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #23 in Sewing Thread |
| Brand | Simthread |
| Color | 2 × NP-BLACK |
| Compatible Knitting Needle Metric Size | 2 Millimeters |
| Compatible Knitting Needle US Size | 10 |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,138) |
| Item Length | 500 Yards |
| Item Weight | 2.11 ounces |
| Manufacturer | CR THREAD INDUSTRY |
| Material | Polyester |
| Number of pieces | 2 |
| Product Care Instructions | Machine Wash |
| Unit Count | 2.0 Count |

## Product Details

- **Brand:** Simthread
- **Color:** 2 × NP-BLACK
- **Compatible Knitting Needle Metric Size:** 2 Millimeters
- **Compatible Knitting Needle US Size:** 10
- **Item Length:** 500 Yards
- **Item Weight:** 0.06 Kilograms
- **Manufacturer:** CR THREAD INDUSTRY
- **Material:** Polyester
- **Product Care Instructions:** Machine Wash
- **Unit Count:** 2.0 Count

## Images

![UV Resistant - Heavy Duty Outdoor Thread for Hand or Machine Sewing - Simthread 100% Polyester Bonded Thread Tex 69 (12wt) - 250 Yards x 2 Spools NP-Black - Image 1](https://m.media-amazon.com/images/I/71I1IvgSi3L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Sturdy thick thread!
*by M***S on September 9, 2025*

The polyester thread was nice, thick and sturdy - no breakage! It worked great with a heavy duty machine needle (100/18). It required my sewing machine tension set at level 7 which made a lovely zigzag finishing stitch on the perimeter of the fabric I purchased to make a gray waterproof canopy replacement cover for my outdoor swing! Would have liked a gray colored thread but the black thread made a pretty contrast. Was well worth the cost!

### ⭐⭐⭐⭐⭐ Quality thread
*by P***N on December 17, 2025*

It works great and was just as it was advertised.

### ⭐⭐⭐⭐⭐ Did it's job
*by A***R on January 12, 2026*

Thread color was exactly as it stated it was when I received it. Thread was packaged very nicely and easy to start using. Seems to be heavy duty worked perfectly for the project I was working on. Would purchase it again.

## Frequently Bought Together

- UV Resistant - Heavy Duty Outdoor Thread for Hand or Machine Sewing - Simthread 100% Polyester Bonded Thread Tex 69 (12wt) - 250 Yards x 2 Spools NP-Black
- SINGER 04801 Universal Heavy Duty Machine Needles -2 Pack
- 50 Pcs Universal Size 110/18 Heavy Duty Sewing Machine Needles, Quliting Sewing Machine Needles for Leather, Compatible with Kind of Home Sewing Machine

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-11*