Upchurch / IDEX Super Flangeless™ Fittings provide the highest pressure holding capability in a flat-bottom fitting system that we offer. Our unique design eliminates loosening of fittings due to tubing twist and holds tight even through vibration. Our high pressure fittings are excellent for tubing assemblies and those times when connections need to be broken frequently.
Upchurch Super Flangeless Nuts and Fittings

Item Name | Product Image | Price |
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Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, Long, 10-32 Flat Bottom, 1/4 inch Hex, PEEK, Green, 100/pk - M-655CSuper Flangeless™ Nut for 1/16" OD Tubing, Long, 10-32 Flat Bottom, 1/4” Hex, PEEK, Green, 100 per pack Part Number: M-655C Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings These Upchurch... |
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Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, Long, 10-32 Flat Bottom, 1/4 inch Hex, PEEK, Green, Single - M-655Super Flangeless™ Nut for 1/16" OD Tubing, Long, 10-32 Flat Bottom, 1/4” Hex, PEEK, Green, Single Part Number: M-655 Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings These Upchurch... |
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Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, M6 Flat-Bottom, Headless Knurl, Black, PPS, 100/pk - P-289CSuper Flangeless™ Nut for 1/16" OD Tubing, M6 Flat-Bottom, Headless Knurl, Black, PPS, 100 per pack Part Number: P-289C Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch... |
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Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, M6 Flat-Bottom, Headless Knurl, PPS, Black, Single - P-289Super Flangeless™ Nut for 1/16" OD Tubing, M6 Flat-Bottom, Headless Knurl, PPS, Black, Single Part Number: P-289 Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch Scientific /... |
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£4.59![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, Short, 6-40 Flat-Bottom, Micro Headless Knurl, PEEK, Green, 10/pk - M-644-03XSuper Flangeless Nut for 1/16" OD Tubing, Short, 6-40 Flat-Bottom, Micro Headless Knurl, PEEK, Green, 10 per pack Part Number: M-644-03X Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch... |
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£43.83![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, Short, 6-40 Flat-Bottom, Micro Headless Knurl, PEEK, Green, 100/pk - M-644-03CSuper Flangeless Nut for 1/16" OD Tubing, Short, 6-40 Flat-Bottom, Micro Headless Knurl, PEEK, Green, 100 per pack Part Number: M-644-03C Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch... |
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Upchurch Scientific Super Flangeless Nut for 1/16 inch OD Tubing, Short, 6-40 Flat-Bottom, Micro Headless Knurl, PEEK, Green, Single - M-644-03Super Flangeless Nut for 1/16" OD Tubing, Short, 6-40 Flat-Bottom, Micro Headless Knurl, PEEK, Green, Single pack Part Number: M-644-03 Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch... |
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£4.75![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Headless Knurl, PPS, Natural, 10/pk - P-287XSuper Flangeless Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Headless Knurl, PPS, Natural, 10 per pack Part Number: P-287X Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This... |
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£28.35![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Headless Knurl, PPS, Natural, 100/pk - P-287CSuper Flangeless Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Headless Knurl, PPS, Natural, 100 per pack Part Number: P-287C Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This... |
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£280.29![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Headless Knurl, PPS, Natural, Single - P-287Super Flangeless Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Headless Knurl, PPS, Natural, Single Part Number: P-287 Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch... |
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£3.02![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, Delrin, Grey, 10/pk - P-252XSuper Flangeless™ Nut for 1/16" or 1/32" OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, Delrin®, Gray/Grey, 10 per pack Part Number: P-252X Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless... |
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£14.05![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, Delrin, Grey, 100/pk - P-252CSuper Flangeless™ Nut for 1/16" or 1/32" OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, Delrin®, Gray/Grey, 100 per pack Part Number: P-252C Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless... |
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Live chat below or contact us for latest price. ... more info |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, Delrin, Grey, Single - P-252Super Flangeless™ Nut for 1/16" or 1/32" OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, Delrin®, Gray/Grey, Single Part Number: P-252 Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings... |
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£1.52![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Black, 100/pk - P-255BLKCSuper Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Black, 100 per pack Part Number: P-255BLKC Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings... |
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Live chat below or contact us for latest price. ... more info |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Black, Single - P-255BLKSuper Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Black, Single Part Number: P-255BLK Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This... |
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£3.66![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Blue, Single - P-255BSuper Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Blue, Single Part Number: P-255B Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This... |
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£8.38![]() Min: 25 |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Natural, 10/pk - P-255XSuper Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Natural, 10 per pack Part Number: P-255X Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This... |
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£34.18![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Natural, 100/pk - P-255CSuper Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Natural, 100 per pack Part Number: P-255C Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless... |
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£338.44![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Natural, Single - P-255Super Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Natural, Single Part Number: P-255 Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This... |
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£3.66![]() |
Upchurch Scientific Super Flangeless Nut for 1/16 inch or 1/32 inch OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK, Red, Single - P-255RSuper Flangeless™ Nut for 1/16” or 1/32” OD Tubing, 1/4-28 Flat Bottom, Standard Knurl, PEEK Red, Single Part Number: P-255R Categories: Fittings, Flat-Bottom Fittings, Fluidic Connections, Super Flangeless Fittings This Upchurch... |
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£6.94![]() Min: 25 |