ISO 6053:1979

Overview

ISO 6053:1979 specifies the shape, basic dimensions and technical requirements for shutter cable release tips and sockets used in photography equipment. Its purpose is to ensure international interchangeability of cable releases by defining the screw-thread profiles, dimensional tolerances and constructional details for tip and socket fittings.

Key Topics

• Scope: Dimensions and technical requirements for screw threads of shutter cable release tips and matching sockets (see figures referenced in the standard).
• Socket variants: Two permitted socket types
  • Type 1 - with tapered threads (preferred)
  • Type 2 - with parallel threads (permissible if release force ≤ 10 N)
• Mechanical requirements:
  • No failure of the cable when a resisting force of 20 N is applied to the guided plunger (1 N ≈ 0.1 kgf).
  • Plunger extension: minimum 12 mm extension beyond end of tip under load; when relaxed the plunger must not extend beyond the tip end.
• Thread geometry and tolerances:
  • Thread profile and basic dimensions are given (figures in the standard).
  • The bisector of the flank angle must be perpendicular to the bolt axis; pitch measured parallel to the axis.
  • Maximum deviation of half the flank angle: ±30′ (minutes of arc).
  • Maximum deviation of thread pitch: ±0.02 mm between any two turns.
• Constructional guidance: For Type 2a, the cone should guide the plunger smoothly into the hole.

Applications

ISO 6053 is practical for:

• Manufacturers designing or producing shutter cable releases, tips and sockets to guarantee compatibility across brands.
• Photographic equipment repair shops and parts suppliers selecting or replacing cable release fittings.
• Quality and compliance engineers verifying thread dimensions and tolerances for interchangeable mechanical connections in cameras and accessories.
• Product designers or hobbyists who need standardized dimensions for custom or replacement shutter release parts.

Who Should Use This Standard

• Camera and accessory manufacturers
• Precision mechanical engineers in photographic equipment
• Component suppliers and parts distributors
• Service centers and restoration professionals

Related Standards

• Developed by ISO Technical Committee ISO/TC 42 (Photography). For broader interoperability and product compliance, consult other ISO photography and mechanical thread standards published by ISO/TC 42 or relevant ISO machining/thread standards when designing mating parts.

Keywords: ISO 6053, shutter cable release, cable release tip, socket, screw threads, dimensions, tapered threads, parallel threads, photographic equipment, interchangeability.