Overview
ISO 14585:2011 specifies the characteristics of hexalobular socket pan head tapping screws (commonly known as Torx-type pan head tapping screws) with thread sizes ST2,9 to ST6,3 inclusive. This International Standard defines dimensional series, head and socket geometry, material and mechanical property references, product grade, tolerances and finish/coating guidance to ensure interchangeability and consistent quality of tapping screws used in industrial assembly.
Key Topics and Requirements
- Scope and thread sizes: Covers tapping screws with thread sizes from ST2,9 to ST6,3.
- Dimensions and head types: Specifies pan head dimensions and preferred lengths for Type C, Type F and Type R (round end) screws; symbols and dimension definitions follow ISO 225.
- Material and mechanical properties: Refers to ISO 2702 for steel material and heat-treatment/mechanical property requirements (product grade A).
- Hexalobular socket: Socket geometry and internal driving feature conform to ISO 10664.
- Threads and tolerances: Thread form follows ISO 1478; tolerances and product grades use ISO 4759-1.
- Finishes and coatings: Electroplated coatings per ISO 4042; non-electrolytic zinc flake coatings per ISO 10683; additional finishes by agreement.
- Acceptance and inspection: Acceptance inspection procedures are referenced in ISO 3269.
- Designation example: Tapping screw ISO 14585 - ST3,5 × 16 - R (shows how to specify thread size, nominal length and type).
Applications and Who Uses This Standard
ISO 14585:2011 is intended for:
- Fastener manufacturers designing and producing hexalobular pan head tapping screws to recognized dimensional and mechanical specifications.
- Design and manufacturing engineers specifying reliable tapping screws for assemblies in electronics, automotive components, appliances and general machinery.
- Procurement and quality teams ensuring bought components meet defined tolerances, coatings and acceptance criteria.
- OEMs and fastener distributors who require consistent interchangeability and compatibility with hexalobular drivers.
Practical uses include selecting correct screw sizes, verifying socket/driving feature compatibility, choosing appropriate coatings for corrosion resistance, and applying acceptance inspection criteria.
Related Standards
- ISO 225 - Symbols and descriptions of dimensions (fasteners)
- ISO 1478 - Tapping screws thread
- ISO 2702 - Heat-treated steel tapping screws - Mechanical properties
- ISO 4759-1 - Tolerances for fasteners - Product grades A, B, C
- ISO 10664 - Hexalobular internal driving feature
- ISO 4042 - Electroplated coatings for fasteners
- ISO 10683 - Non-electrolytically applied zinc flake coatings
- ISO 3269 - Acceptance inspection for fasteners
Keywords: ISO 14585:2011, hexalobular socket pan head tapping screws, tapping screws ST2,9 ST6,3, hexalobular socket, fastener standards, screw dimensions, coatings, mechanical properties, acceptance inspection.
