Are these (Milton (S-716)) push to connect or do you have to pull back the sleeve?

With the Milton ( S-716 ) , all you do is slide the sleeve back and insert the male coupler ,then slide then slid the sleeve forward and the two are locked together.

Can this coupler be used for natural gas?

It works well with compressed air at pressures up to 120 psi but I doubt it would meet building code to use it for natural gas or any explosive gas.

What is the length of the threaded portion?

The actual length of the threads is 3/8". Over all to the base of the hex would be 1/2".

what is the difference between quick change and push type couplers?

On “push in” couplers the locking collar stays back when a tool is not inserted. To insert a tool all you need to do is push the tool into the coupler, unlike traditional couplers that you manual have to pull the collar back and insert the tool at the same time. To release the tool is the same for both, pull back on the collar and it spits the tool out. The push in style couplers are significantly easier to operate, but tend to start leaking sooner than a traditional style.

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Description

🔧 Connect Like a Pro — The Ultimate Quick-Change Air Fitting for the Modern Craftsman

HIGH FLOW EFFICIENCY - Supports up to 40 SCFM airflow, powering your tools with no compromise on speed or reliability.
HEAT PRESSURE TOUGH - Handles up to 300 PSI and 250°F, built to thrive in demanding industrial environments.
INDUSTRY STANDARD M STYLE - Seamlessly compatible with Milton, ColorFit, and top competitor couplers for ultimate versatility.
ROBUST BRASS CONSTRUCTION - Durable, corrosion-resistant brass body paired with Buna-N seals ensures long-lasting performance.
KWIK CHANGE INTERCHANGEABILITY - Effortlessly swap fittings across brands thanks to MIL-C-4109 military spec compliance.

The Milton S-716 is a premium 1/4" male NPT M-Style quick connect air coupler crafted from durable brass with Buna-N seals. Engineered to meet military specification MIL-C-4109, it delivers up to 300 PSI pressure and 40 SCFM airflow, while withstanding temperatures up to 250°F. Compatible with a wide range of industry-standard couplers, it’s the go-to choice for professionals demanding reliable, fast, and versatile pneumatic connections.

Specifications

Manufacturer	Milton Industries
Part number	S-716
Item Weight	45.3 g
Product Dimensions	5.23 x 2.39 x 2.39 cm; 45.36 g
Item model number	S-716
Size	1 Count (Pack of 1)
Color	short tripod gold
Style	M-Style
Finish	Brass
Material	Brass
Shape	Round
Power source type	Air Powered
Item Package Quantity	1
Number Of Pieces	1
Measurement System	Inch
Special Features	M-STYLE: The industry standard coupler. Milton M-style, ColorFit M-style, + red competitor couplers/plugs are all compatible. -KWIK-CHANGE®: Interchangeable/compatible with most manufacturers. Compliant with military specification MIL-C-4109. -NPT: 1/4" male national pipe thread flow size. Durable brass. Buna-N seals. -MAXIMUM: 40 standard cubic feet per minute (SCFM). 300 PSI inlet pressure. Temperatures up to 250 degrees F. -INCLUDED IN MILTON M-STYLE KITS: #S-221, S-222, MK1669-1, 683-MCPK.
Included components	1 Milton Branded Product
Batteries Included?	No
Batteries Required?	No

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