---
product_id: 323156793
title: "(S-690) 1/4\" FNPT Dual Head Air Chuck"
brand: "milton"
price: "¥4423"
currency: JPY
in_stock: true
reviews_count: 5
category: "Milton"
url: https://www.desertcart.jp/products/323156793-s-690-1-4-fnpt-dual-head-air-chuck
store_origin: JP
region: Japan
---

# Max 150 PSI pressure rating 1/4" FNPT for secure airline connection Dual head design for versatile valve access (S-690) 1/4" FNPT Dual Head Air Chuck

**Brand:** milton
**Price:** ¥4423
**Availability:** ✅ In Stock

## Summary

> ⚙️ Inflate smarter, not harder — unlock every valve with Milton’s dual head precision!

## Quick Answers

- **What is this?** (S-690) 1/4" FNPT Dual Head Air Chuck by milton
- **How much does it cost?** ¥4423 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/323156793-s-690-1-4-fnpt-dual-head-air-chuck)

## 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

- • **Dual Head Access:** Effortlessly reach inner dual tires and tricky valve angles with two precision-engineered heads.
- • **Sealing Closed Chuck:** Ensures airtight inflation with zero leakage, saving time and frustration on every use.
- • **Compact & Lightweight:** Portable 90.7g design fits seamlessly into your toolkit without weighing you down.
- • **Robust 150 PSI Capacity:** Handles high-pressure inflation demands with confidence and durability.
- • **Exacting Manufacturing Standards:** Crafted for professionals who demand reliability and precision in every tool.

## Overview

The Milton S-690 Dual Head Air Chuck is a precision-engineered, closed-type inflator designed for compressed airlines. Featuring a dual head for easy access to inner dual tires and challenging valve positions, it supports up to 150 PSI with a secure 1/4" FNPT connection. Lightweight and manufactured to exacting standards, it’s the go-to tool for professionals seeking reliable, leak-free inflation.

## Description

Milton (S-690) 1/4" FNPT Dual Head Air ChuckMilton's S-690 dual head air chuck allows easy access to inner dual when valve is facing inward. Sealing type chuck is closed and is for use on an airline. Designed and manufactured to exacting standards, Milton air chucks have a maximum pressure of 150 PSI.This air chuck is not intended for use or compatible on all Milton inflator gauges.

Review: Worked great !!
Review: These are well made. Seals well against the valve stem without excessive effort and no leakage

## Features

- DESIGNED/MANUFACTURED: To exacting standards. This is a Closed/Sealing-type air chuck for use on a compressed airline
- DUAL HEAD CHUCK: Makes tire valves more accessible with the two heads for easier access
- INFLATE: By hooking the closed head (w/valve) directly to an airline
- EASY ACCESS: To inner dual when valve is facing inward. Great for reaching into Dually trucks and other challenging angles
- MAX PSI: Maximum air pressure of 150 pounds per square inch. 1/4" female national pipe thread

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002SQYT6 |
| Best Sellers Rank | #138,915 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #199 in Air Tool Fittings |
| Capacity | 6.35 Millimeters |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,843) |
| Date First Available | 1 January 2024 |
| Global Trade Identification Number | 00030937006905 |
| Included components | 1 Milton Branded Product |
| Item Weight | 90.7 g |
| Item model number | S-690 |
| Manufacturer | Milton Industries |
| Manufacturer Part Number | S-690 |
| Model | s-690 |
| Product Dimensions | 24.77 x 4.45 x 3.3 cm; 90.72 g |
| Special Features | DESIGNED/MANUFACTURED: To exacting standards. This is a Closed/Sealing-type air chuck for use on a compressed airline.- DUAL HEAD CHUCK: Makes tire valves more accessible with the two heads for easier access.- INFLATE: By hooking the closed head (w/valve) directly to an airline.- EASY ACCESS: To inner dual when valve is facing inward. Great for reaching into Dually trucks and other challenging ang… |
| UPC | 030937006905 |

## Product Details

- **Brand:** Milton
- **Compatible devices:** Lathe
- **Item diameter:** 0.25 Inches
- **Item weight:** 0.2 Pounds
- **Material:** Brass

## Images

![(S-690) 1/4" FNPT Dual Head Air Chuck - Image 1](https://m.media-amazon.com/images/I/51JtYCzl3+L.jpg)

## Questions & Answers

**Q: Do i need a male or female coupling to attach this to?**
A: depends on what is on the connecting end of your air hose, typically the hose would have female so the s-690 would need to be male.

**Q: What adapter do i need to use the milton s-690 with the jump-n-carry jncair 1700? thank you.**
A: Can't answer that one

**Q: Is it metal or  aluminum**
A: Aluminum is metal. Brass and aluminum.

**Q: can this be used on a bayonet tire inflator gauge?**
A: works great on air hose

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***S on 12 January 2026*

Worked great !!

### ⭐⭐⭐⭐⭐ Review
*by J***N on 7 January 2025*

These are well made. Seals well against the valve stem without excessive effort and no leakage

### ⭐⭐⭐⭐⭐ Review
*by E***O on 25 April 2025*

Articulo de muy buena calidad eficiente.

## Frequently Bought Together

- Milton Dual-Head Air Chuck, 1/4" FNPT, Tire Air Chuck for Tire Inflator Gauge and Air Compressor, S-690 (Pack of 10)
- Milton Dual Head Straight Foot Air Chuck Part No: A-S-693
- Milton S-699 1/4" Single Head Air Chuck

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*