Skip to content
Free Local Pickup Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted American Hardware Brands

Green Leaf Nylon 1/4 in. D X 5/8 in. D Adapter

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Meet the Green Leaf Nylon 1/4 in. MPT to 5/8 in. Barb Adapter—a compact, reliable connector engineered to simplify your tubing hookups. This lead-free nylon adapter blends durable…

Green Leaf MPN CBA1458BG1 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $1.99. Our online price is $2.59.
$2.59
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within for same-day shipping
Cases of 5 · Order in multiples of 5

Sold by the Case · Save 15%

Take $1.95 off your case at checkout

Case of 5 · List Price $12.95
15% OFF with code at checkout $11.00
Use Code at Checkout

This product is packed and shipped from our distribution network as a complete case of 5. Apply casediscount at checkout to take 15% off your order.

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Meet the Green Leaf Nylon 1/4 in. MPT to 5/8 in. Barb Adapter—a compact, reliable connector engineered to simplify your tubing hookups. This lead-free nylon adapter blends durable performance with lightweight handling, making it a smart choice for hobbyists and professionals alike.

What it is

This adapter converts a standard 1/4 inch male pipe thread (MPT) inlet to a 5/8 inch barb outlet, enabling a secure push-on connection to tubing. With the Green Leaf branding, you’re selecting a connector built for consistent fit and dependable sealing in everyday fluid or air lines.

Key specifications

  • Inlet: 1/4 in. Male Pipe Thread (MPT)
  • Outlet: 5/8 in. Barb
  • Material: Nylon (lead-free)
  • Product Type: Adapter
  • Brand: Green Leaf
  • Packaging: Bagged

Why this adapter stands out

  • Lead-free and corrosion-resistant: Nylon construction minimizes contamination risk and stands up to moisture exposure, making it suitable for water-based and light-duty air applications.
  • Easy, secure connections: The 1/4" MPT inlet threads into standard female fittings, while the 5/8" barb accepts tubing with a matching outer diameter for a tight, leak-resistant seal when clamped.
  • Lightweight and versatile: A practical solution for compact plumbing projects, hydroponics, irrigation setups, aquariums, and DIY liquid-handling systems where space is at a premium.
  • Convenient packaging: Bagged packaging protects the fitting during storage and handling, ensuring it’s ready for your project straight out of the package.

Ideal use cases

  • Residential irrigation lines and drip systems that need a reliable 1/4" MPT to 5/8" barb transition.
  • Hydroponic reservoirs and nutrient circulation loops where a lightweight, corrosion-resistant connector is beneficial.
  • Aquarium or terrarium setups requiring a simple adapter between threaded fittings and flexible tubing.
  • DIY cooling or filtration loops in light-duty, low-to-moderate pressure environments.

Installation tips

For a secure fit, ensure the tubing is fully seated on the barb before tightening clamps. When attaching the inlet to a female 1/4" thread, use standard thread sealant or PTFE tape as recommended for your system. Verify the tubing ID/OD compatibility with a quick dry-fit before running liquid through the line.

Choose the Green Leaf Nylon 1/4 in. MPT to 5/8 in. Barb Adapter when you need a dependable, easy-to-install connector that keeps your small- to mid-scale fluid systems flowing smoothly.

The Details Specifications

Brand Green Leaf
SKU 4000550
UPC 023537029504
Unit 0
Case Pack Quantity 75 per case
Retail Unit Quantity 5
Unit of Measure 0 0
Dimensions (L × W × H) 9 × 6 × 1
Weight 0 lbs
Cubic Feet 0.00418 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare