by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12)

Full Title

Locking of screws, bolts or nuts (; locking of bottle closures B65D; locking of rail-fastening bolts for permanent ways E01B9/12; locking of fastening means for railway fishplates E01B11/38; locking devices for valves or cocks F16K) > in which the locking takes place during screwing down or tightening (F16B39/01 takes precedence) > by special members on, or shape of, the nut or bolt (F16B39/26 takes precedence; locknuts F16B39/12)

Child Classifications

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• F16B 39/282 Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
• F16B 39/284 Locking by means of elastic deformation ( F16B39/38 take precedence)
• F16B 39/30 Locking exclusively by special shape of the screw-thread
• F16B 39/32 Locking by means of a pawl or pawl-like tongue
• F16B 39/34 Locking by deformable inserts or like parts
• F16B 39/36 with conical locking parts, which may be split, including use of separate rings co-operating therewith
• F16B 39/38 with a second part of the screw-thread which may be resiliently mounted (F16B39/30 takes precedence)