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JMF Company 5/8 in. Compression Brass Insert

JMF Company 5/8 in. Compression Brass Insert

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

The JMF Company 5/8 in. Compression Brass Insert delivers secure, leak‑proof connections for 5/8" compression lines across a variety of piping materials. Built from solid brass, th…

Jmf Company MPN 4178034
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

Typical Store Price i
Typical store price: low $0.99, average $1.59
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You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
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About Product Overview

The JMF Company 5/8 in. Compression Brass Insert delivers secure, leak‑proof connections for 5/8" compression lines across a variety of piping materials. Built from solid brass, this insert blends durability with dependable seal integrity, making it a reliable choice for both professional installations and robust DIY projects.

Key specifications

  • End 1: Diameter 5/8" | Type: Compression
  • Material: Brass
  • Average Lead Content: <0.25%
  • Maximum Pressure: 400 psi
  • Maximum Temperature: 250°F
  • Compatible Pipe Materials: Aluminum, Brass, Copper, Plastic
  • Product Type: Insert
  • Brand: JMF Company
  • ANSI Certified: Yes
  • Packaging Type: Bulk | Number in Package: 1

What makes it unique

Unlike generic fittings, this 5/8" compression brass insert is engineered for consistent performance across mixed-material systems. Brass resists corrosion, maintains a stable seal under pressure, and supports long service life even in challenging environments. The compression end design simplifies installation and reduces the risk of leaks compared with alternative joining methods.

Ideal uses and installation ideas

Use this insert when you’re connecting 5/8" compression lines to aluminum, brass, copper, or plastic piping. It’s well suited for repairs, upgrades, or new builds where a quick, tool-free seal is advantageous. With bulk packaging and a single unit per package, it's convenient for stocking on job sites and in professional shops.

Practical tips for trusted performance

  • Ensure the mating compression nut and ferrule are compatible with your chosen pipe material and the 5/8" insert size.
  • Prepare pipe ends by cleaning and trimming square to promote a tight seal and prevent leaks.
  • After assembly, test the connection under pressure and inspect for leaks within 24 hours of installation.

Choose the JMF Company 5/8 in. Compression Brass Insert for a reliable, ANSI‑certified, brass solution that delivers solid performance across aluminum, brass, copper, and plastic piping. Bulk packaged, single‑unit convenience, and engineered for lasting service make it a smart addition to any piping project.

The Details Specifications

Brand Jmf Company
SKU 4178034
UPC 094913051983
Unit 0
Case Pack Quantity 5 per case
Retail Unit Quantity 5
Unit of Measure 0 0
Dimensions (L × W × H) 4 × 3 × 1
Weight 0 lbs
Cubic Feet 0.00096 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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What we offer
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