---
product_id: 2390809
title: "(S-210) 1/4\" NPT M-Style Coupler and Plug Kit, (12-Piece)"
brand: "milton"
price: "$226302"
currency: COP
in_stock: true
reviews_count: 13
category: "Milton"
url: https://www.desertcart.co/products/2390809-s-210-1-4-npt-m-style-coupler-and-plug
store_origin: CO
region: Colombia
---

# Max 40 SCFM airflow Up to 250°F heat resistance 1/4" NPT precision fit (S-210) 1/4" NPT M-Style Coupler and Plug Kit, (12-Piece)

**Brand:** milton
**Price:** $226302
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your air game—because quality leaks are so last season!

## Quick Answers

- **What is this?** (S-210) 1/4" NPT M-Style Coupler and Plug Kit, (12-Piece) by milton
- **How much does it cost?** $226302 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/2390809-s-210-1-4-npt-m-style-coupler-and-plug)

## Best For

- milton enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable brass couplers paired with case-hardened, rust-resistant steel plugs for industrial-grade longevity.
- • **Leak-Free Confidence:** Buna-N seals and precision engineering eliminate frustrating air leaks, boosting your tool efficiency and workflow.
- • **Powerful Performance:** Handles up to 300 PSI and 40 SCFM airflow—perfect for demanding air tool setups without leaks or drops.
- • **Complete 12-Piece Kit:** Includes 2 female couplers, 8 male plugs, and 2 female plugs—everything you need to upgrade your pneumatic system.
- • **Seamless Compatibility:** KWIK-CHANGE® tech ensures effortless interchange with most brands—never get stuck with incompatible fittings again.

## Overview

The Milton (S-210) 12-piece M-Style Coupler and Plug Kit features 1/4" NPT brass couplers and case-hardened steel plugs with Buna-N seals, delivering leak-resistant, high-performance air fittings. Rated for up to 300 PSI, 40 SCFM airflow, and 250°F temperature, this kit is fully compatible with most manufacturers and built for durability in professional pneumatic applications.

## Description

Milton (S-210) M-Style Coupler and Plug Kit, (12-Piece) This pneumatic 12-pc. Milton (S-210) M-Style KWIK-CHANGE coupler/plug air accessory kit includes a variety of couplers, plugs and fittings with a 1/4" basic flow size (air handling capacity). Milton M-Style Kwik Change couplers are made of brass, while M-Style Kwik Change plugs are made of case-hardened steel and are plated to resist rust. This collection of couplers and plugs: - Will interchange with all manufacturers who comply with the dimensional requirements of military specification MIL-C-4109. - Offer a maximum airflow of 40 standard cubic feet per minute. - Offer a maximum of 300 pounds per square inch. - Can withstand a max temperature of 250 degrees Fahrenheit. KIT INCLUDES: (2) 1/4" FNPT couplers (8) 1/4" MNPT plugs (2) 1/4" FNPT plugs Singular Milton Item Part #’s: #715 coupler (1/4" FNPT) #727 plug (1/4" MNPT) #728 plug (1/4" FNPT)

Review: Well worth the money! - Very good quality! We tried cheaper brands, but they start leaking after only a few months of use.
Review: Looks can be deceiving! - If you look at the Milton coupler and a "regular coupler", the appearance is almost exact. Based on outward appearance, you would think all connectors are the same. The performance, however, is totally different! Milton is by far superior! I recently bought my first air compressor, hose and accessories and had air leakage from the very beginning. I thought it was the cheap plastic hose that came with the compressor, so I went out and bought a real rubber hose. The problem was that I bought connectors from Harbor Freight to attach to my new hose. Still had leaks and could not figure out how to stop them. I used almost a whole dispenser of nylon tape, but it didn't help. Finally, I saw these couplers on desertcart and after reading the excellent reviews, thought I would give them a try. I replaced the connector on both ends of the hose with the Milton, and like magic ....no more leaks! My air tools performed much better and they were so much more enjoyable to use without air hissing while trying to use them. As soon as you attach the air tool, you can just tell the difference in quality. I would highly recommend these connectors.

## Features

- BASIC FLOW SIZE: All 1/4" body size air fittings. 1/4" NPT. Buna-N seals.
- KWIK-CHANGE: Interchangeable/compatible with most manufacturers. Easy push to connect.
- MAXIMUM: 40 SCFM. 300 PSI. Temperatures up to 250 degrees F.
- QUALITY: Durable brass couplers. Case-hardened steel plugs, plated to resist rust and corrosion.
- M-STYLE KIT INCLUDES: (2) Female Couplers, (8) Male Plugs, and (2) Female Plugs. (Milton #715, #727, #728)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005IUEC2O |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #17,766 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #14 in Air Tool Fittings |
| Brand | Milton |
| Color | Brass |
| Connector Type | Plug |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,627) |
| Date First Available | July 4, 2010 |
| Exterior Finish | Brass |
| Global Trade Identification Number | 00030937002105 |
| Included Components | 1 Milton Branded Product |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.6 ounces |
| Item dimensions L x W x H | 4.63 x 4 x 1.5 inches |
| Item model number | S-210 |
| Manufacturer | Milton |
| Material | Brass |
| Measurement System | Inch |
| Number of Pieces | 12 |
| Part Number | S-210 |
| Product Dimensions | 4.63 x 4 x 1.5 inches |
| Size | 1/4 inch |
| Special Features | BASIC FLOW SIZE: All 1/4" body size air fittings. 1/4" NPT. Buna-N seals. Couplers for air shop use. -KWIK-CHANGE®: Interchangeable/compatible with most manufacturers. -MAXIMUM: 40 SCFM. 300 PSI. Temperatures up to 250 degrees F. -QUALITY: Durable brass couplers. Case-hardened steel plugs, plated to resist rust and corrosion. -M-STYLE KIT INCLUDES: (2) Female Couplers, (8) Male Plugs, and (2) Fema… |
| Style | Coupler and Plug Kit |
| Thread Size | 1/4 NPT |
| Thread Type | NPT |
| UPC | 745332379003 030937002105 |
| Usage | Fleet and plant maintenance. |
| Warranty Description | One Year Limited |

## Product Details

- **Brand:** Milton
- **Color:** Brass
- **Connector Type:** Plug
- **Exterior Finish:** Brass
- **Item Weight:** 0.1 Pounds
- **Item dimensions L x W x H:** 4.63 x 4 x 1.5 inches
- **Material:** Brass
- **Size:** 1/4 inch
- **Thread Size:** 1/4 NPT
- **Thread Type:** NPT

## Images

![(S-210) 1/4" NPT M-Style Coupler and Plug Kit, (12-Piece) - Image 1](https://m.media-amazon.com/images/I/614v03eyOqL.jpg)

## Questions & Answers

**Q: What is the difference between automotive and industrial air fittings....these indicate they are M fittings...exactly what are M fittings...**
A: 1/4" type V HVLP High Volume Low Pleasure fittings & connectors, they have a much larger hole which allows for more airflow so your tools will make more power than with the smaller type A or M that most people use. I recently replaced all my fittings in the shop because I had an assortment of all things air from 20-30 years of acquiring. The advantage of type V couplers is that you can use tools with type A & type M fittings along with the type V kind of a universal receiver however the reverse is not true, type V fittings WILL NOT work in type A or type M couplers. If you are using them for home shop, type M is fine the ones I have are working great form, fit, and function are great.

**Q: are they made In USA?**
A: I looked and cannot find a marking that indicates whether or not this is the case.   But, they are machined precisely and work well, which is the key thing.  Given the present attitude about mining, I'd guess the copper came from Chile, the zinc may or may not be from the US, and the steel is probably a US product.  If they can be made by extrusion and/or cold heading they are probably a US product.

**Q: Are they still made in the usa?**
A: Indeed they are, which is why it's my brand of choice.  Below is a link to their website for this product.http://www.miltonindustries.com/couplers-and-plugs/m-style/12-piece-m-style-coupler-kit.html

**Q: Will the quick coupler fit on a Porter Cable PCFP02003 pancake compressor with 3/8 inch hose? Thanks**
A: They worked on all my 3/8" hose connections as well as my compressor

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well worth the money!
*by A***R on November 17, 2025*

Very good quality! We tried cheaper brands, but they start leaking after only a few months of use.

### ⭐⭐⭐⭐⭐ Looks can be deceiving!
*by J***D on March 29, 2016*

If you look at the Milton coupler and a "regular coupler", the appearance is almost exact. Based on outward appearance, you would think all connectors are the same. The performance, however, is totally different! Milton is by far superior! I recently bought my first air compressor, hose and accessories and had air leakage from the very beginning. I thought it was the cheap plastic hose that came with the compressor, so I went out and bought a real rubber hose. The problem was that I bought connectors from Harbor Freight to attach to my new hose. Still had leaks and could not figure out how to stop them. I used almost a whole dispenser of nylon tape, but it didn't help. Finally, I saw these couplers on Amazon and after reading the excellent reviews, thought I would give them a try. I replaced the connector on both ends of the hose with the Milton, and like magic ....no more leaks! My air tools performed much better and they were so much more enjoyable to use without air hissing while trying to use them. As soon as you attach the air tool, you can just tell the difference in quality. I would highly recommend these connectors.

### ⭐⭐⭐⭐⭐ These are very high quality. Greatest upgrade I have given my compressors and air tools in a while.
*by E***Y on September 19, 2025*

I will always use Milton. I tried cheaper imported products before, and they leak and fail prematurely. Milton is made in the USA, durable, and doesn’t leak down even after sitting with 150psi on them for several days. I put all my non Milton fittings in the recycling and replaced with these. Couldn’t be happier with them.

## Frequently Bought Together

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-03-12*