

Please note that any Festool items that are out of stock will not be delivered to customers until January 2026. If you would like to know if an item is in stock before ordering, please contact us via email and we will get back to you ASAP during our working hours. Please note that this is a universal situation for all Festool suppliers during the holiday period.
Hitachi HiKoki Nail Gun Fuel Stem Adapter NR90 GFN1664 GBNF1850 GBNT1665 GBT1850K NT50 NT65
The stem adapter fits onto th cylinder head of the nailer this part allows the gas to filter through to get to the chamber, You would need to replace this part when it breaks.
Please see below applicable models.