Quick Connector with Internal Thread, 3/8-Inch, for 5/16-Inch Hose

Brief Overview

This brass quick connector is engineered for pneumatic and fluid systems requiring a 3/8-inch female threaded inlet and a 5/16-inch hose connection. The internal thread design allows direct screwing onto male-threaded air or fluid supply lines, while the barbed hose tail ensures secure, leak-resistant coupling to standard 5/16-inch ID hose. The hexagonal nut body accommodates wrench engagement for tool-assisted installation and removal—a practical advantage in tight mounting spaces or high-vibration environments.

For complementary connectivity solutions, consider pairing this connector with 3/8-inch male-threaded couplings or exploring 1/2-inch female-threaded options for larger pneumatic circuits.

Key Features

• 3/8-Inch Female Thread: Direct screw-on connection to standard male-threaded ports
• 5/16-Inch Barbed Hose Tail: Single barb ring provides positive hose retention and prevents unintended disconnection
• Brass Construction: Corrosion-resistant material suitable for compressed air, water, and light hydraulic applications
• Hexagonal Nut Body: Flat machined faces allow wrench application for secure installation and tool-assisted removal
• Chamfered Internal Bore: Reduces sharp edges and facilitates smooth thread engagement

Business Advantages for Resellers

High Demand in Service and Assembly Operations

Quick connectors are standard stock items in any shop handling pneumatic tools, air compressors, or fluid distribution systems. This specific size combination (3/8" thread × 5/16" hose) fills a common gap in medium-duty applications, making it an essential repeat-order item.

Margin-Friendly Inventory

Brass fittings carry consistent markup potential and require minimal shelf space. The small, durable nature of this connector means low risk of damage, obsolescence, or return issues—pure margin on every unit sold.

Cross-Sell Opportunity

Customers purchasing quick connectors typically need multiple sizes and mating components. Offering complementary 1/4-inch or 1/2-inch options alongside this product increases average order value and positions your shop as a complete pneumatic solution provider.

Technical Specifications

Specification	Value
Thread Size (Internal)	3/8 inch
Hose Barb Size	5/16 inch ID
Material	Brass
Body Style	Hexagonal nut (wrench-friendly)
Barb Configuration	Single raised ring for hose retention
Finish	Polished brass
Thread Type	Standard NPT (National Pipe Thread) compatible

Applications & Recommended Use

• Pneumatic tool circuits: Connecting hand tools, impact wrenches, and air grinders to distribution lines
• Fluid transfer systems: Small-scale hydraulic or coolant circulation applications
• Service and repair operations: Quick connect/disconnect in automotive shops, manufacturing facilities, and maintenance departments
• Compressor accessories: Coupling air lines from tank to tool stations

Call to Value

Stock this connector in bulk to meet the steady demand from shops maintaining pneumatic systems. Its universal fit, simple barb-retention design, and brass durability make it a no-hassle stocking decision with reliable sell-through rates. Pair with our broader range of quick connectors and threaded fittings to build a complete pneumatic offering that keeps customers returning.