Double hole safety wire bolt

冷間圧造加工は、切削の少ない、あるいは切削を必要としない新しい圧造加工のひとつである。
金属。の作用による金属の塑性変形を利用した加工法である。
外力を受け、金型の助けを借りて、金属の体積を再分配し、移動させる。
必要な部品やブランクを製造します。冷間圧造工程は、標準的な
ボルト、ネジ、ナット、リベット、ピンなどの留め具。

Double Hole Safety Wire Bolt – Comprehensive Overview

A Double Hole Safety Wire Bolt is a specialized fastener designed to remain securely locked in place even under extreme vibration, rotation, or dynamic loads. Unlike standard bolts, it incorporates two precisely drilled holes—typically in the head or along the shank—to accommodate a safety wire (lock wire) that physically prevents loosening.

Design & Construction

1. Hole Configuration:

   • Radial Holes (Most Common): Two small holes drilled perpendicular to the bolt’s axis, allowing the wire to pass through the sides of the head.

   • Axial Holes (Less Common): Holes drilled along the bolt’s length, used in specific applications where radial wiring isn’t feasible.

How It Works

• If the bolt tries to rotate, the wire resists movement.

• Proper wire tension ensures no slack, maintaining constant resistance.

Wiring Methods:

• Multi-Bolt Group Locking: A continuous wire threads through multiple bolts in series, securing an entire assembly.

• Double hole safety wire bolt

Key Applications

1. Aerospace: Jet engines, landing gear, and flight control systems (FAA/SAE standards).

2. Military/Defense: Firearms, armored vehicles, and aircraft (MIL-SPEC compliance).

3. Marine & Industrial: Pumps, turbines, and machinery exposed to constant motion.

Installation Best Practices

1. Wire Selection: Use stainless steel or Monel wire (0.020″–0.041″ thickness).

2. Tension: Maintain 6–8 twists per inch; too loose = ineffective, too tight = may break.

3. Inspection: Regular checks for wire integrity (no fraying or corrosion).

Conclusion

Double hole safety wire bolts provide the most reliable mechanical locking in extreme conditions where failure is not an option. Their design ensures longevity, reusability, and fail-safe operation, making them indispensable in aerospace, motorsports, and heavy industry.