When you demand the utmost reliability and precision from your .308 rifle, every component counts. The Yankee Hill Machine Co Thread Protector (model YHM‑3414‑B, also known as 3414B) is engineered to safeguard the critical threading at the barrel’s muzzle, ensuring consistent performance shot after shot.
Key Features & Benefits
- Exact Thread Specification: Precision‑cut
.625 × 24 (UNC) threads match the standard .308 barrel profile for a perfect fit. - Robust Outer Diameter: A
.920 in outer diameter provides a solid, protective barrier against impacts, debris, and wear. - Matte Finish: The low‑gloss black coating reduces glare, resists corrosion, and blends seamlessly with tactical and hunting optics.
- Premium Material Construction: Made from high‑grade stainless steel with a nitride treatment for superior strength and longevity.
- Easy Installation: Thread‑on design requires no special tools—simply screw onto the barrel and torque to the manufacturer’s specification.
- Preserves Barrel Integrity: By shielding the thread area, the protector prevents thread stripping, cross‑threading, and premature wear.
- Universal Compatibility: Designed for all .308 rifles with standard .625 × 24 barrel threads, including AR‑10 platforms, tactical rifles, and precision shooters.
Why Choose Yankee Hill Machine Co?
Yankee Hill Machine Co (YHM) has a legacy of producing high‑quality firearms components that meet the exacting standards of military, law enforcement, and civilian shooters. Each thread protector undergoes rigorous quality control, ensuring that the product you receive is free from defects and ready for immediate field use.
Technical Specifications
| Model | YHM‑3414‑B (3414B) |
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| UPC | 816701013955 |
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| Caliber | .308 Winchester |
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| Thread Pitch | .625 × 24 (UNC) |
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| Outer Diameter | .920 in (23.37 mm) |
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| Finish | Matte Black (Nitride Coated) |
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| Material | Stainless Steel, Nitride Treated |
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| Length | 1.25 in (31.8 mm) – ideal for standard muzzle devices |
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| Weight | 0.07 lb (32 g) |
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Installation Guide (Quick Overview)
- Ensure the rifle is unloaded and the barrel is clean.
- Align the thread protector with the barrel’s threading.
- Screw the protector clockwise by hand until snug.
- Using a torque wrench, tighten to the manufacturer’s recommended torque (typically 10‑15 lb‑ft).
- Verify that the protector is fully seated and that there is no wobble.
- Re‑attach any muzzle device or suppressor as needed.
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