The YHM HUB Direct Thread Mount, 5/8×32, is a stainless adapter from Yankee Hill Machine that converts a HUB-compatible suppressor to a direct-thread mounting system (brand part no. YHM-2189-32). The barrel-side thread is cut to 5/8×32, while the suppressor side uses the standard 1.375×24 HUB thread. It is machined from 17-4 PH stainless steel and finished in black oxide. To install it, remove the existing mount mechanism from the suppressor, thread this mount on with a 3/4-inch open-end wrench, then thread the suppressor onto the barrel. Choose the 5/8×32 version only when your barrel carries that exact thread.

Key Specifications

• The barrel-side thread is 5/8×32, which has to match your barrel exactly because the mount threads directly onto it.
• The suppressor-side thread is the standard 1.375×24 HUB pattern, so it fits HUB-compatible suppressors.
• It converts a HUB-compatible suppressor to a direct-thread mounting system.
• The material is 17-4 PH stainless steel, chosen for strength under repeated mounting.
• The finish is black oxide, a durable low-glare coating.
• The outer diameter is 1.5625 inches, matching the width of a HUB suppressor interface.
• The weight is 1.7 ounces, which adds very little mass to the muzzle end.
• Installation uses a 3/4-inch open-end wrench, so no special tool is required.
• The part is made in the USA by Yankee Hill Machine.

Frequently Asked Questions

Which suppressors will this mount work with? It works with HUB-compatible suppressors that use the 1.375×24 thread on the rear.

Which barrel thread does this mount fit? It is cut for 5/8×32 on the barrel side. YHM sells the same mount in other thread sizes, so match the thread to your barrel before ordering.

How do I install it? Remove the existing mount mechanism from the suppressor, thread the HUB Direct Thread Mount on with a 3/4-inch open-end wrench, then thread the suppressor onto the barrel.

Buy the YHM HUB Direct Thread Mount, 5/8×32

Match a HUB-compatible suppressor to a 5/8×32 barrel with this Yankee Hill Machine mount. Order it with other suppressor parts and accessories from our Lubbock, Texas gun shop for fast, direct shipping.