Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MUELLER Flare Nut: 3/8 in Female SAE, 5/8 in Female SAE Right-Hand, Brass - Flare Nuts & Bushings for Access Valves
MUELLERFlare Nuts & Bushings for Access Valves

MUELLER Flare Nut: 3/8 in Female SAE, 5/8 in Female SAE Right-Hand, Brass

The MUELLER Flare Nut (MPN A 05052) is a brass flare nut and bushing for access valves, featuring a 3/8 in Female SAE connection. It is constructed with a brass body and rated for a maximum pressure of 700 psi.

SKU 3G-OTH-71096

Also listed as: A05052 · A-05052

Brand
MUELLER
Item
Flare Nut: 3/8 in Female SAE, 5/8 in Female SAE Right-Hand, Brass
Category
Flare Nuts & Bushings for Access Valves
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MUELLER
Manufacturer Part Number
A 05052
Type
Brass
Max
700 psi
Body Material
Brass
Female SAE Right-Hand
5/8 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MUELLER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MUELLER Flare Nut (MPN A 05052) is a brass flare nut and bushing for access valves, featuring a 3/8 in Female SAE connection. It is constructed with a brass body and rated for a maximum pressure of 700 psi.

Frequently Asked Questions

What is the MUELLER Flare Nut A 05052 used for?

The MUELLER Flare Nut A 05052 is used to connect and seal access valves in HVAC and refrigeration systems. Its brass construction and 3/8 in Female SAE connection make it suitable for joining copper tubing in refrigerant lines, ensuring a leak-tight joint under pressure.

What are the specifications of the MUELLER Flare Nut A 05052?

The MUELLER Flare Nut A 05052 has a brass body, a 3/8 in Female SAE connection, and a 5/8 in Female SAE right-hand thread. It is rated for a maximum pressure of 700 psi. The manufacturer part number is A 05052.

Where to buy the MUELLER Flare Nut A 05052 worldwide?

You can source the MUELLER Flare Nut A 05052 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the part reaches your facility reliably.

How to install the MUELLER Flare Nut A 05052?

To install the MUELLER Flare Nut A 05052, slide the nut over the flared end of the copper tube, then thread it onto the access valve's male flare fitting. Tighten with two wrenches—one on the nut, one on the valve—until snug. Avoid over-torquing to prevent brass damage.

Used in

Common applications for MUELLER
Commercial refrigeration systems — Mueller steel shell filter driers for moisture and contaminant removal in liquid lines.
HVAC installations — Mueller sweat connection ball valves for flow control in refrigerant circuits.
Industrial process cooling — Mueller magnetic check valves to prevent backflow in refrigerant piping.
Refrigeration system maintenance — Mueller flare nuts and bushings for access valve connections.
Low-GWP refrigerant systems — Mueller A2L-compatible ball valves for use with low-flammability refrigerants.
Retrofit projects — Mueller filter driers and valves for upgrading existing refrigeration equipment.

MUELLER Products

3G Electric supplies MUELLER flare nuts & bushings for access valves. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MUELLER Half-Union Connector: 1/4 in Male SAE Right-Hand, 1/4 in Male NPT Right-Hand, Brass (MPN A 04585)
MUELLER
MUELLER Half-Union Connector: 1/4 in Male SAE Right-Hand, 1/4 in Male NPT Right-Hand, Brass (MPN A 04585)
MUELLER Flare Gasket: 1/4 in SAE, 3/16 in, Copper, 700 psi Max, 3/8 in W x 3/8 in L, A2L Compatible (MPN A 00401)
MUELLER
MUELLER Flare Gasket: 1/4 in SAE, 3/16 in, Copper, 700 psi Max, 3/8 in W x 3/8 in L, A2L Compatible (MPN A 00401)
MUELLER Diaphragm Valve: 3/8 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14835)
MUELLER
MUELLER Diaphragm Valve: 3/8 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14835)
MUELLER Diaphragm Valve: 1/4 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14833)
MUELLER
MUELLER Diaphragm Valve: 1/4 in Male Flare, Std Lg Body, 0.6 in Base to Port Center Ht (MPN A 14833)
MUELLER Flare to Sweat Adapter: 3/8 in Male SAE, 5/8 in Female SAE Right-Hand, Copper, 700 psi Max (MPN A 15726)
MUELLER
MUELLER Flare to Sweat Adapter: 3/8 in Male SAE, 5/8 in Female SAE Right-Hand, Copper, 700 psi Max (MPN A 15726)
MUELLER Diaphragm Valve: 1/2 in Male Flare, Std Lg Body, 0.8 in Base to Port Center Ht (MPN A 14836)
MUELLER
MUELLER Diaphragm Valve: 1/2 in Male Flare, Std Lg Body, 0.8 in Base to Port Center Ht (MPN A 14836)

More from MUELLER

View all MUELLER parts
MUELLER Flare Nut: 1/4 in Female SAE, 7/16 in Female SAE Right-Hand, Brass, 700 psi Max (MPN A 05051)
MUELLER
MUELLER Flare Nut: 1/4 in Female SAE, 7/16 in Female SAE Right-Hand, Brass, 700 psi Max (MPN A 05051)