Asahi FK0155 155-165mm Heavy-Duty Hook Spanner (Made in Japan):
- Technical Specifications: Applicable slotted round nut diameter range 155 mm to 165 mm, overall tool length approx. 385 mm, hook thickness 12 mm, material: Drop-forged premium Chrome Vanadium Alloy Steel (Cr-V), surface finish: heavy black manganese phosphate (cationic electrodeposition anti-rust coating), hardened and tempered claw tooth for extreme bite, manufactured strictly in accordance with JIS B4638 industrial standard, weight approx. 950g, Product of Asahi Metal Industry Co., Ltd. Japan.
- Precision Forged Claw Hook: Engages securely into radial drive slots of large bearing locknuts, preventing slip-offs and damaged nut shoulders.
- High-Strength Drop-Forged Cr-V Alloy Steel: Withstands heavy pipe extension cheater torque without bending or breaking.
- Manganese Phosphate Anti-Rust Surface Treatment: Eliminates slippery chrome reflections and resists heavy grease, moisture, and corrosion.
- Ergonomic Long Lever Handle (385mm): Generates strong mechanical loosening torque for stubborn, machine-seized retaining locknuts.
- Applications: Machine tool spindle bearing locknut adjustment, hydraulic cylinder cap tightening, motorcycle steering head collars, and heavy pump overhaul.
