Yankee Hill Machine YHM-3414-B Thread Protector | 5/8-24

The Yankee Hill Machine YHM-3414-B is a steel thread protector designed to safeguard rifle barrel threads when a muzzle device or other threaded accessory is not installed. It is specified for .308 caliber barrels with 5/8-24 threads and a .920 inch outside diameter, finished in matte black. The protector reduces the risk of thread damage during transport, storage, and routine maintenance.

Typical applications include protecting threaded barrels during storage or transit and preserving threads when swapping or removing muzzle devices for cleaning or competition use.

Product Specifications

• The manufacturer is Yankee Hill Machine.
• The part number is YHM-3414-B.
• The product type is Thread Protector.
• The compatible caliber is listed as .308.
• The threads are specified as 5/8-24.
• The outside diameter is .920 inches.
• The finish is Matte.
• The color is Black.
• The model designation is .625X24.
• The listed weight is .125 as provided by the manufacturer.
• The subcategory is Muzzle Devices.
• The description provided by the manufacturer notes the item is made of steel.
• The UPC is 816701013955.

Compact and functional, this thread protector provides a straightforward way to keep barrel threads in serviceable condition without adding bulk. Its matte-black finish maintains a low profile while matching common firearm finishes, making it suitable for field rigs, competition setups, or storage where thread preservation is a priority.