Yankee Hill 218924 HUB Direct Thread Mount 5/8"-24 tpi 17-4 Stainless Steel Black Melonite QPQ

The Yankee Hill HUB Direct Thread Mount in 5/8"-24 TPI is a precision suppressor accessory designed for shooters who need a reliable, durable mounting solution. Built from 17-4 stainless steel and finished with Melonite QPQ (Quench Polish Quench) hardening, this direct-thread mount delivers corrosion resistance and exceptional longevity in demanding conditions—whether you're running suppressed precision rifles on the range or in the field.

Direct-thread mounts eliminate the need for a separate QD (quick-disconnect) adapter, offering a streamlined setup that reduces overall length and complexity. The 5/8"-24 TPI specification makes this mount compatible with barrels threaded to that standard, which is common across a wide range of rifle platforms. Yankee Hill Machine Co's reputation for quality manufacturing means you get tight tolerances and repeatable performance shot after shot.

The Melonite QPQ process adds a hard, salt-bath nitrided finish that resists corrosion and wear—critical for a component that sits at the muzzle and handles repeated suppressor mounting and removal. Whether you're building a dedicated suppressed rifle or adding adaptability to an existing setup, this mount is engineered to last.

Key Features

• Direct-thread design eliminates QD adapter components
• 5/8"-24 TPI threads for broad platform compatibility
• 17-4 stainless steel construction for strength and corrosion resistance
• Melonite QPQ hardened finish for durability and longevity
• Yankee Hill Machine Co quality and precision engineering

Specifications

Frequently Asked Questions

What barrels does this 5/8"-24 direct-thread mount fit?

This mount is designed for barrels threaded to 5/8"-24 TPI. Check your barrel's thread specification before purchasing to ensure compatibility.

Do I need a separate adapter to mount a suppressor?

No. This is a direct-thread mount, meaning the suppressor threads directly onto the barrel via this mount. There's no separate QD adapter required.

What is Melonite QPQ finish and why does it matter?

Melonite QPQ is a salt-bath nitriding process that creates a hard, corrosion-resistant surface. It's ideal for muzzle devices because it withstands repeated mounting, environmental exposure, and the wear that comes with suppressor use.

Is this mount rated for all suppressor types?

This mount interfaces with suppressors designed for 5/8"-24 TPI direct-thread attachment. Verify your suppressor's thread spec matches before assembly.