4. Threaded, headed fastener, or washer making: process and apparat
  5. Apparatus for making externally threaded fastener or...
  6. Screw fastener making

John H. Grady

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Punch for making such screw heads with slant rib

Threaded – headed fastener – or washer making: process and apparat – Apparatus for making externally threaded fastener or... – Screw fastener making
Patent

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Screw head with slant rib

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Head driving structure
Patent

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Profile ID: LFUS-PAI-P-1518749

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