Parallel screw threads of whitworth form

Eitemau Tebyg

• Terms for cylindrical screw threads
  gan: 8096 British Standards Institution
  Cyhoeddwyd: (1984)
• Tapping screw threads
  gan: 8096 British Standards Institution
• ISO metric screw threads
  gan: 8096 British Standards Institution
  Cyhoeddwyd: (1981)
• ISO miniature screw threads
  gan: 8096 British Standards Institution
• Specification for unified screw threads
  gan: 8096 British Standards Institution