ISO-QF (KF) Stub Weld Flange


  • High Vacuum Rated to 1×10-8 Torr
  • Bakeable to 200°C
  • Compatible with all ISO standard vacuum flanges and fittings
  • Quick sealing and disassembly



  • Standard:
    • 304 Stainless Steel
    • 6061 Aluminum


Product Notes

  • Butt weld
  • Designed to fit standard inch tubing O.D.’s

*Dimensions are in inches unless otherwise specified

Part IDReference NumberA B C Material Tube Size 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID4000122Reference NumberQF16-050-HNM-0.50A 0.5B 0.375C 0.5Material 304 SSTTube Size 0.53D CADLoginDrawingLoginUnit Price$11.0057
Part ID4000128Reference NumberQF16-050-HNM-0.50-ALA 0.5B 0.375C 0.5Material 6061-T6 AluminumTube Size 0.53D CADLoginDrawingLoginUnit Price$10.00Contact
Part ID4000123Reference NumberQF16-075-HNM-0.50A 0.75B 0.625C 0.5Material 304 SSTTube Size 0.753D CADLoginDrawingLoginUnit Price$12.00Contact
Part ID4000129Reference NumberQF16-075-HNM-0.50-ALA 0.75B 0.625C 0.5Material 6061-T6 AluminumTube Size 0.753D CADLoginDrawingLoginUnit Price$10.008
Part ID4000124Reference NumberQF25-100-HNM-0.50A 1B 0.875C 0.5Material 304 SSTTube Size 13D CADLoginDrawingLoginUnit Price$14.80779
Part ID4000130Reference NumberQF25-100-HNM-0.50-ALA 1B 0.875C 0.5Material 6061-T6 AluminumTube Size 13D CADLoginDrawingLoginUnit Price$12.0013
Part ID4000125Reference NumberQF40-150-HNM-0.75A 1.5B 1.375C 0.75Material 304 SSTTube Size 1.53D CADLoginDrawingLoginUnit Price$15.0026
Part ID4000131Reference NumberQF40-150-HNM-0.75-ALA 1.5B 1.375C 0.75Material 6061-T6 AluminumTube Size 1.53D CADLoginDrawingLoginUnit Price$15.00Contact
Part ID4000126Reference NumberQF50-200-HNM-0.75A 2B 1.875C 0.75Material 304 SSTTube Size 23D CADLoginDrawingLoginUnit Price$25.0011
Part ID4000132Reference NumberQF50-200-HNM-0.75-ALA 2B 1.875C 0.75Material 6061-T6 AluminumTube Size 23D CADLoginDrawingLoginUnit Price$31.7518