Needles Hat Needle

Hat type needles are designed to be connected directly to a flat bottom valve port. Use the Needle Bushing part number 35056 to connect the needle directly to any 1/4-28 Hamilton valve.

Note on Length: Needle length is specified from the needle point to the start of the installation hardware. The distance from the needle point to the back end of the hub is length + 14.22 mm. This additional length is added so that when a needle is fixed into a port, with Hamilton fitting part number 35056, the overall exposed length of the needle is the length specified by the order. For more information, please reference the Hamilton Needle Point Style Guide.

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Hamilton's knowledge base provides a range of explanatory articles, frequently asked questions, and document downloads.
  • SDS - Needle Cleaning Solution

    Safety data sheets (SDS) are documents that allow for the documentation and logging of the potential risks and hazards associated with a product or substance. Hamilton Company provides SDS sheets for many of it's syringe and needle parts and accessories. Download the safety data sheet for Hamilton's needle cleaning solution.
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