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 Fast, Work Harder: The Ultimate Industrial Air Coupler

DURABLE BRASS CONSTRUCTION - Built to last with premium brass and Buna-N seals ensuring leak-proof, long-term performance.
KWIK CHANGE INTERCHANGEABILITY - Effortlessly swaps with most manufacturers’ fittings, meeting MIL-C-4109 military specs for reliability.
INCLUDED IN TRUSTED MILTON KITS - Compatible with popular Milton M-style kits like #S-221, S-222, MK1669-1, and 683-MCPK for easy upgrades.
HIGH PRESSURE TEMPERATURE TOLERANCE - Operates safely up to 300 PSI and 250°F, perfect for demanding industrial environments.
INDUSTRY STANDARD M STYLE COMPATIBILITY - Seamlessly connects with Milton, ColorFit, and red competitor couplers for ultimate versatility.

The Milton S-716 is a rugged 1/4" Male NPT M-Style quick connect air fitting designed for industrial use. Compatible with major brands and military specs, it delivers up to 40 SCFM airflow at 300 PSI and withstands temperatures up to 250°F. Its durable brass body and Buna-N seals ensure reliable, leak-free performance, making it a must-have for professionals demanding efficiency and durability.

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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