ASD-STAN prEN 2138-001 WASHERS, FLAT, STEEL -- AEROSPACE SERIES Form: prEN Registration Number: 2138 Edition: 001 Date of Publication: 11-Jan-1982 Number of pages: 5 Document Type: Product Standard Domain: Mechanical Scope: Status: Superseded Replaced by: EN 2138:1989 Price (excl. VAT): €0.00