![.578"×28 RH Fluted Thread Protector [0.690" OD, 0.500" OAL, FOR: 45 ACP] - SKU#9450](https://hughesprecision.com/wp-content/uploads/2018/03/578cap3.jpg)
![.578"×28 RH Fluted Thread Protector [0.690" OD, 0.500" OAL, FOR: 45 ACP] - SKU#9450 - Image 2](https://hughesprecision.com/wp-content/uploads/2018/03/578cap4.jpg)
![.578"×28 RH Fluted Thread Protector [0.690" OD, 0.500" OAL, FOR: 45 ACP] - SKU#9450 - Image 3](https://hughesprecision.com/wp-content/uploads/2018/03/578cap2.jpg)
![.578"×28 RH Fluted Thread Protector [0.690" OD, 0.500" OAL, FOR: 45 ACP] - SKU#9450 - Image 4](https://hughesprecision.com/wp-content/uploads/2018/03/578-cap1-1.jpg)
Description
.578″×28 RH Fluted Thread Protector [0.690″ OD, 0.500″ OAL, FOR: 45 ACP] – SKU#9450
This is a .578″×28 RH machined thread protector which is 0.500″ long with a fluted 0.690″ OD. It fits barrels and adapters using .578″×28 RH threading, commonly found on .45 ACP pistols. Don’t run the risk of damaging the threads when muzzle accessories are not being used. Thread Protector is High Quality 4140 Steel with a Black Oxide Finish.
Please measure the length of the thread on your barrel or adapter to be sure that 1/2″ LONG will cover your thread.
ALWAYS VERIFY YOUR MUZZLE DEVICE IS RATED FOR THE CALIBER YOU INTEND TO SHOOT
ALWAYS VERIFY PROPER ALIGNMENT BEFORE FIRING
![1/2"×28 RH Fluted Thread Protector [0.625" OD, 0.500" OAL] - SKU#9300](https://hughesprecision.com/wp-content/uploads/2016/11/DSC_0001-6-scaled-500x500.jpg)
![M10×1 RH Fluted Thread Protector [0.625" OD, 0.440" OAL] - SKU#9106](https://hughesprecision.com/wp-content/uploads/2018/11/DSC_0007-500x500.jpg)
![M8×0.75 RH Fluted Thread Protector [0.625 OD, 0.440" OAL] - SKU#9100](https://hughesprecision.com/wp-content/uploads/2018/10/DSC_0025-500x500.jpg)
Mark Christian (verified owner) –
Fit my SIG-Sauer P220 .45 threaded barrel perfectly and at half the price of the factory thread protector. If it has threads, Hughes is my go-to.