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Now Available: 1/2"-28 Durathread Brass Heat Set Inserts

by Initeq

Durathread brass heat set inserts are now available in 1/2"-28 — one of the most widely used thread sizes in firearms, fluid systems, and industrial hardware.

We're offering Short style inserts in 5-pack, 10-pack, and 20-pack quantities, all machined from CDA 360 free-machining brass. Shop 1/2"-28 inserts →

What Uses 1/2"-28 Threads?

The 1/2"-28 thread pitch is a standard across several industries. Here are some of the most common applications:

Firearm muzzle devices — 1/2"-28 is the standard muzzle thread for .223 Remington, 5.56 NATO, and .22 LR barrels. Devices that thread onto a 1/2"-28 muzzle include:

  • Muzzle brakes and compensators — reduce felt recoil and muzzle rise
  • Flash hiders and flash suppressors — minimize visible muzzle flash
  • Suppressors (silencers) — attach via direct-thread mount to the barrel
  • Thread protectors — cap the threads when no device is installed
  • Blast forwarding devices — redirect concussion away from the shooter

Automotive and fuel systems — 1/2"-28 is used in certain fuel filter housings, fittings, and adapter assemblies. It's a common thread size for inline filter connections.

Hydraulic and pneumatic fittings — some industrial fluid power systems use 1/2"-28 fine-thread fittings where a tighter seal or finer adjustment is needed compared to coarse-thread alternatives.

Custom jigs, fixtures, and 3D-printed tooling — embedding a 1/2"-28 brass insert into a printed part lets you create threaded mounting points for any of the above devices without machining metal.

Why Use Heat Set Inserts for 1/2"-28?

If you're prototyping fixtures, building custom tooling, or designing 3D-printed accessories that need to interface with 1/2"-28 hardware, a brass heat set insert gives you durable metal threads in a plastic part. The insert can handle repeated assembly and disassembly without stripping — something a tapped plastic hole can't do at this size.

Browse all Durathread inserts or check out our Heat Set Insert Size Guide if you need help picking the right size for your project.

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