# Milton S-99705 Safety Coupler, 1/4-inch Female NPT

The Milton S-99705 Safety Coupler is a red-button M-style air coupler listed with a 1/4-inch female NPT connection. Its two-step release is intended to stop airflow before the plug is released, while customer feedback flags durability and jamming concerns.

- [Original product page](https://loonieperks.com/product/milton-s-99705-safety-coupler)
- [View offer](https://loonieperks.com/visit/milton-s-99705-safety-coupler)
- Market: CA
- Language: en-CA
- Currency: CAD
- Brand: Milton
- Model: S-99705
- Category: Tools & Garden > Hardware & Building Materials
- Price: 21.34 CAD
- Previous price: 30.21 CAD
- Discount: 29%
- Price checked: 2026-11-13T12:36:42.736Z
- Rating: 4.2 / 5
- Reviews: 108

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The description identifies it as an M-style safety coupler with a 1/4-inch female NPT connection.
- The listed release sequence is push once to stop airflow, then push twice to release the plug.
- A red button is described as an identification aid.

## Pros

- Two-step release is designed to stop airflow before disconnecting the plug.
- The listed female NPT connection and M-style designation help buyers compare it with their air-line fittings.

## Cons

- Customer feedback reports some fittings breaking after short use and instances of jamming.

## Specifications

### Identity
- Brand: Milton
- Model: S-99705
### Connection and use
- Connector type: Coupling
- Thread type: NPT
- Connection described: 1/4" Female NPT
- Style described: M Style
- Basic flow size: 1/4"
- Air flow: 36 SCFM
### Dimensions and installation
- Dimensions listed: 12.2 x 12.2 x 3.3 centimetres
- Weight listed: 113 g
- Size listed: 0.54 inches
### Materials and appearance
- Material listed: 1
- Exterior finish: Alloy Steel
- Colour: Red

## Before you buy

- The listing gives a general size of 0.54 inches alongside separate dimensions of 12.2 x 12.2 x 3.3 centimetres, and lists material as "1" while separately naming an Alloy Steel exterior finish. Confirm the intended size and material details if they are important to fit or selection.

## A good fit for

- Buyers seeking a single M-style air coupler with a listed 1/4-inch female NPT connection.
- Users who want a coupler described with a staged airflow-stop and plug-release sequence.

## Less suited to

- Buyers who need established durability evidence or want to avoid the reported jamming concerns.

## Customer feedback

Customer feedback describes effective operation, including use with high-pressure air, but also reports fittings breaking after short use and jamming. Opinions on quality, compatibility and air resistance are mixed. These accounts matter for buyers relying on frequent connections, though the supplied listing does not establish how consistently those issues occur or confirm this coupler's performance at a particular pressure.
- Positive themes: Feedback describes the fitting as working effectively.
- Negative themes: Feedback reports breakage after short use and jamming.
- Mixed feedback: Feedback is mixed on quality, compatibility and air resistance.

## Frequently asked questions

### What connection does the listing describe?
It describes an M-style coupler with a 1/4-inch female NPT connection. Check that this matches the plug and air-line fittings you plan to use.
### How is the safety release described?
The listing says to push once to stop airflow and push twice to release the plug.
### What should I know about customer feedback?
Feedback describes effective operation but also reports durability problems and jamming. Experiences with quality, compatibility and air resistance are mixed.

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## Add-ons

- [Milton S-219 M Style Safety Coupler Kit](https://loonieperks.com/visit/milton-s-99705-safety-coupler)
- [Milton Industries ColorFit Coupler & Plug Kit - \(M-Style, Red\) - 1/4" NPT, \(14-Piece\)](https://loonieperks.com/visit/milton-s-99705-safety-coupler)

## Images

![Milton S-99705 Safety Coupler, 1/4-inch Female NPT — 1](https://loonieperks.com/i/JkzxCe68CjIy2LBG4RCkFeKFMPl5tGJ23V0WQ41ZK2R-eyJ8sPkH2ri4sxyToOjS2L3rO4Gk3QHKw8AZd84ZqsNsTyZkOP-hBt3oqs_vmGsQ6SSROyATwEm4.jpg)