What is the difference between automotive and industrial air fittings....these indicate they are M fittings...exactly what are M fittings...

1/4" type V HVLP High Volume Low Pleasure fittings & connectors, they have a much larger hole which allows for more airflow so your tools will make more power than with the smaller type A or M that most people use. I recently replaced all my fittings in the shop because I had an assortment of all things air from 20-30 years of acquiring. The advantage of type V couplers is that you can use tools with type A & type M fittings along with the type V kind of a universal receiver however the reverse is not true, type V fittings WILL NOT work in type A or type M couplers. If you are using them for home shop, type M is fine the ones I have are working great form, fit, and function are great.

are they made In USA?

I looked and cannot find a marking that indicates whether or not this is the case. But, they are machined precisely and work well, which is the key thing. Given the present attitude about mining, I'd guess the copper came from Chile, the zinc may or may not be from the US, and the steel is probably a US product. If they can be made by extrusion and/or cold heading they are probably a US product.

Are they still made in the usa?

Indeed they are, which is why it's my brand of choice. Below is a link to their website for this product.http://www.miltonindustries.com/couplers-and-plugs/m-style/12-piece-m-style-coupler-kit.html

Will the quick coupler fit on a Porter Cable PCFP02003 pancake compressor with 3/8 inch hose? Thanks

They worked on all my 3/8" hose connections as well as my compressor

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(S-210) 1/4" NPT M-Style Coupler and Plug Kit, (12-Piece)

Product ID: 2390809

Details

Brand
Milton
Color
Brass
Connector Type
Plug
Exterior Finish
Brass
Item Weight
1.6 ounces
Item dimensions L x W x H
4.63 x 4 x 1.5

💨Max 40 SCFM airflow

🔥Up to 250°F heat resistance

⚙️1/4" NPT universal fit

12.81 OMR

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Description

🔧 Elevate your air tool game with Milton’s ultimate M-Style kit!

BUILT TO LAST - Durable brass couplers with rust-resistant steel plugs
POWERFUL PERFORMANCE - Handles up to 300 PSI for demanding air tool needs
COMPLETE 12 PIECE KIT - Includes 2 female couplers, 8 male plugs, and 2 female plugs
HEAT PRESSURE READY - Operates reliably up to 250°F and 40 SCFM airflow
SEAMLESS COMPATIBILITY - KWIK-CHANGE design fits most brands effortlessly

The Milton (S-210) 12-piece M-Style Coupler and Plug Kit offers professional-grade 1/4" NPT air fittings with KWIK-CHANGE compatibility, durable brass and steel construction, and robust performance up to 300 PSI and 250°F. Perfect for seamless integration with most air tools, this kit ensures reliable airflow up to 40 SCFM, making it a must-have for any serious pneumatic setup.

Specifications

ASIN	B005IUEC2O
Best Sellers Rank	#13,075 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Air Tool Fittings
Brand Name	Milton
Color	Brass
Connector Type	Plug
Customer Reviews	4.8 4.8 out of 5 stars (1,698)
Exterior Finish	Brass
Global Trade Identification Number	00030937002105
Included Components	1 Milton Branded Product
Item Dimensions	4.63 x 4 x 1.5 inches
Item Type Name	Milton s-210 12 Piece M-Style Coupler Kit
Item Weight	1.6 ounces
Manufacturer	Milton
Manufacturer Part Number	S-210
Manufacturer Warranty Description	One Year Limited
Material Type	Brass
Model Number	S-210
Number of Pieces	12
Set Name	Milton (S-210) M-Style Coupler and Plug Kit (12-Piece)
Size	1/4 inch
Thread Type	NPT
UPC	745332379003 030937002105
Unit Count	1 Count

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12.81 OMR

Duties & taxes included

In stock

Sold byAmazon OMANDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to OMAN.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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The product quality is outstanding. Exactly what I needed for my work.

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