Products search Shop By Category Call 866-674-6225AdaptersCF Flanges and FittingsHigh Vacuum Bellows SS HosesValvesWeld TubesISO Flanges and FittingsKF (QF) Flanges and FittingsAlcatel Vacuum Pump PartsLeybold Vacuum Pump PartsPfeiffer Vacuum Pump PartsWelch Vacuum Pump PartsGreases – SuppliesVacuum Rated HosesUniversities OnlyPressure Measurement VacuumCustom Vacuum Components / Vented ScrewsGS Series Ball ValvesSuper Sale Items316 Stainless Steel ComponentsBriskHeat®KF (QF) 40 to 1/4 Inch NPT Female Adapter 304 Stainless Steel$46.28Product Code: MKKF4014FNPT Category: Vacuum Adapters KF (QF), NPT, VCR, ISO, CFKF (QF) Flange to Female NPT Adapters,VacuumAvailability: In stock KF (QF) 40 to 1/4 Inch NPT Female Adapter 304 Stainless Steel quantity Add to cart Free Shipping on Orders Over $100**Exclusions apply. See Shipping & Return Policy for details.KF (QF) 40 to 1/4 Inch NPT Female Adapter 304 Stainless SteelA(inch)B(inch) 2.171.00 Related products KF (QF) 40 to 1/8 Inch NPT Female Adapter 304 Stainless Steel $43.94 Sale! KF (QF) 25 to 1/2 Inch NPT Female Adapter 304 Stainless Steel $47.59 $22.50 Sale! KF (QF) 40 to 2.00 Inch NPT Female Adapter 304 Stainless Steel $81.45 $66.50 KF (QF) 40 to 3/4 Inch NPT Female Adapter 304 Stainless Steel $65.98