Dead Air Thread Protector 1/2-28 Rimfire | DA424

The Dead Air Thread Protector DA424 is a dedicated rimfire thread protector designed for 1/2-28 threaded rimfire adapters. It protects the exposed threaded section—about 0.4 inches—during storage, transport, or when a suppressor/adapter is not installed. The part is finished in matte black and is sized specifically to work with Dead Air rimfire adapter systems including Mask and Mask-HD hosts. Intended uses include protecting adapter threads between deployments and serving as a lightweight transport/storage safeguard.

Product Specifications

• The manufacturer is Dead Air Armament (Dead Air Silencers).
• The manufacturer’s part number is DA424.
• The model is listed as Thread Protector.
• The product type is Thread Protector for rimfire adapters.
• The thread pitch is 1/2-28.
• The NFA thread pattern is 1/2×28.
• Compatible hosts include 1/2-28 rimfire adapters and Dead Air Mask / Mask-HD.
• It protects a threaded length of 0.4 inches.
• The material is stated as steel.
• The finish and color are a matte black.
• The subcategory is Muzzle Devices.
• The product description/spec attribute lists 1/2X28 as the thread description.
• This item is not available for direct shipment to California.
• The UPC is 810128161282.

Simple and purpose-built, the DA424 thread protector provides a low-profile, durable cover that preserves adapter threads when the adapter or suppressor is not installed. Its steel construction and matte-black finish match common rimfire accessory lines and maintain a discreet appearance on the host device.

Customers have described it as an inexpensive way to guard threads and have praised its durable matte-black finish.