DIN 66399 / ISO IEC 21964

Collection: Security Level 6 Shredding

DIN 66399 Security Level P-6 limits the maximum particle area to 10 mm² with a maximum particle width of 1 mm. P-6 machines are micro-cut, producing a fine, dense shred from which reconstruction requires exceptional effort and specialist equipment.

P-6 is intended for secret material where disclosure would have severe consequences: classified government and military documents, intelligence products, national security records, and the most sensitive commercial information such as unpublished patent work or critical infrastructure documentation.

Two clarifications matter here. First, P-6 is not the highest level in DIN 66399 — P-7, at 5 mm², sits above it. Second, a P-6 rating is a statement about particle size only. It does not by itself mean a machine is approved for US classified material. That requires the specific make and model to appear on the current NSA/CSS 02-01 Evaluated Products List, which also demands a maximum 1 mm x 5 mm particle. Always check the EPL entry for the exact model before buying against a classified-destruction requirement.

Typical buyers are defence and intelligence organisations, government agencies, cleared contractors and research institutions. Throughput is low and oiling is essential at this level. Our DIN 66399 guide covers the practical trade-offs.

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