
MILTON 698 1/4" FNPT Single Head Air Chuck with Grip, 150 PSI
Secure Tire Inflation - Milton Locking Tire Chuck (698, 1/4" FNPT)
Professional Air Chuck with Lock-On Valve Connection
The Milton 698 locking tire chuck delivers secure tire inflation with valve core thread connection. This 150 PSI rated chuck prevents disconnections during inflation, essential for automotive tire maintenance.
Key Benefits
Perfect Applications
- Tire inflation and pressure maintenance for repair shops.
- Home garage air compressor setups for car maintenance.
- Fleet vehicle tire servicing and routine checks.
- Motorcycle and bicycle tire inflation with Schrader valves.
Technical Specifications
| Specification | Details |
|---|---|
| Model Number | 698 / S-698 |
| Thread Size | 1/4" FNPT (6.35 mm Female National Pipe Thread) |
| Dimensions | 3 x 1.375 x 0.875 in (76 x 35 x 22 mm) |
| Maximum Pressure | 150 PSI |
| Size/Quantity | Single Unit |
| Chuck Type | Single Head with Locking Grip |
| Valve Compatibility | Schrader Valve (Standard) |
| Material | Brass and Diecast Zinc |
| Weight | 0.15 lbs (68 g) |
| Country of Origin | Made in USA |
Installation and Use
- Connect the 1/4" female NPT fitting to your air compressor hose or airline system.
- Press the chuck firmly onto the tire valve stem until you hear the locking mechanism engage.
- Inflate to desired PSI - the chuck maintains a secure seal throughout the process.
- Release air pressure before removing to prevent valve damage.
- Pull chuck straight off the valve when inflation is complete.
Important: This air chuck is designed for airline use only and is not compatible with inflator gauges or handheld pressure devices.
Get Professional Locking Tire Chuck Performance
Stop dealing with loose connections during tire inflation. This USA-made chuck delivers reliable results.
Secure Your Air Compressor Setup TodayFrequently Asked Questions
What vehicles is this locking tire chuck compatible with?
This chuck works with all vehicles using standard Schrader valves, including passenger cars, light trucks, SUVs, motorcycles, and bicycles. The 1/4" FNPT threaded connection fits most standard air compressor hoses and shop airline systems. Compatible with both home garage setups and commercial quick-connect fittings.
Can I use this air chuck with my tire pressure gauge?
No, this chuck is designed exclusively for airline use with air compressors and cannot be used with inflator gauges or handheld pressure measurement devices. The locking mechanism requires direct airline connection for proper sealing. For pressure measurement, use a separate tire gauge after inflation is complete.
How does this compare to a standard air chuck without locking?
The locking mechanism eliminates the need to hold the chuck in place during inflation, preventing air leaks from loose connections and providing more consistent pressure delivery than standard push-on chucks. This results in faster inflation times, better accuracy, and reduces operator fatigue during multiple tire servicing scenarios.
What is the maximum air pressure this chuck can handle?
The Milton 698 is rated for up to 150 PSI, which safely covers passenger vehicle tire pressures (typically 30-35 PSI), light truck requirements (35-80 PSI), and motorcycle specifications (28-40 PSI). This rating provides a comfortable safety margin for standard applications.
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