DIN 15401‑1 single hook unmachined parts are heat‑treated forged semi‑finished blanks manufactured in compliance with German DIN standard. Produced by closed‑die forging or hammer forging, these hook forgings have completed forging and full heat‑treatment, while shank thread cutting and final precision machining have not been carried out. Two variants are available: with nose or without nose, serving as standard raw forgings for producing DIN 15401‑2 finished single crane hooks with threaded shank.
Key Features of DIN 15401‑1 Single Hook Unmachined Parts
- High‑strength alloy‑steel forgings with continuous metal grain flow formed by forging process, eliminating internal metallurgical defects and delivering stable mechanical performance for heavy‑duty hoisting conditions.
- Quenching and tempering heat‑treatment is fully completed before delivery, achieving qualified hardness and toughness, avoiding heat‑treatment distortion risk after final machining.
- Supplied as semi‑finished forgings without shank threads, supporting‑surface finishing and fine dimensional trimming, with sufficient machining allowance reserved for customers’ custom processing.
- Two structural options: with nose or without nose, to match different hook block assembly requirements for overhead cranes and hoisting equipment.
- Standardized dimension system according to DIN 15401‑1, compatible with subsequent CNC machining to produce DIN 15401‑2 ready‑to‑use finished single lifting hooks.
Main Applications
- Act as standard semi‑finished hook blanks for crane manufacturers to machine DIN 15401‑2 threaded‑shank finished single hooks.
- Allow custom modification of shank length and key dimensions according to customer drawing requirements for special crane assemblies.
- For overhead cranes, electric hoists and gantry cranes that adopt single‑hook suspension assemblies, mainly for lifting capacity below 80 tons.
- Provided as stock blanks for machinery factories who own in‑house machining capacity to shorten their hook production cycle.
Important Note
DIN 15401‑1 unmachined single hook blanks cannot be used for real lifting operations. They must go through thread turning, fine machining, proof‑load test and permanent marking to become qualified DIN 15401‑2 finished single hooks before field installation and service.
