Super Flangeless™ Fittings, 6-40 and 6-32

For Flat-Bottom Ports

  • For 1/16" OD and Capillary Tubing
This Upchurch Scientific fittings system connects 1/16" OD and capillary tubing into any flat-bottom 6-40 or 6-32 threaded port. The 316 stainless steel ring of the Super Flangeless system offers constant, uniform compression on the ferrule while operating as a bearing against the nut. Thus, the nut can spin freely against the ferrule system, preventing the tubing from twisting during the tightening process. Once swaged, the lock ring holds the ferrule in place on the tubing, a benefit that also makes this fittings style ideal for tubing assemblies since the ferrule keeps the nut from sliding off the tubing.

Connect 1/16" OD tubing into 6-40 flat-bottom ports using the M-650 Ferrule and M-644-03 Nut. For 6-32 flat-bottom ports, use the M-650 Ferrule with the M-660 Nut. Use our FEP NanoTight Sleeves with these fittings to connect capillary tubing with OD sizes between 70 µm and 1 mm. Both headless nuts are made of PEEK polymer. For easy tightening, try our N-290 Extender Tool.

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M-652 , Nut SF Short Hex 1/16 ...

For Flat-Bottom Ports

  • Designed to Hold to Higher Pressures than Standard Flangeless Fittings
  • Eliminates Loosening of Nuts Caused by Tubing Twist

Upchurch Scientific® Super Flangeless Fittings are designed to provide significant improvements over standard Flangeless Fittings.The lock ring offers uniform compression on the ferrule while operating as a bearing against the nut. Thus, the nut can spin freely against the ferrule, preventing the tubing from twisting during the tightening process. This feature helps eliminate subsequent loosening of the nut, making the Super Flangeless system ideal for applications subject to vibration. These products are also well suited for connections that need to be broken frequently, since the lock ring holds the ferrule in place on the tubing until intentionally removed. Use the LT-300 Removal Tool to release Super Flangeless Ferrules from tubing for repositioning.

Our other fittings for 10-32 flat-bottom ports, VacuTight™ Fittings, are available. These fittings are designed to provide airtight connections under vacuum and low pressure conditions.

For 1/16" OD Tubing (10-32 Flat-Bottom Ports)

Several PEEK™ nut styles are available to connect 1/16" OD tubing into 10-32 flat-bottom ports. Use these fittings with rigid and semi-rigid tubing, such as PEEK, stainless steel and fluoropolymer materials (e.g., FEP, PFA, and ETFE). Connect capillary tubing using our NanoTight™ FEP Tubing Sleeves.

The M-650 Ferrule is made of PEEK polymer and the lock ring from passivated 316 stainless steel.

Ultra High Performance version of a Super Flangeless Fitting is available.

$3.83

M-653 , Nut SF Short Knurl 1/1...

For Flat-Bottom Ports

  • Designed to Hold to Higher Pressures than Standard Flangeless Fittings
  • Eliminates Loosening of Nuts Caused by Tubing Twist

Upchurch Scientific® Super Flangeless Fittings are designed to provide significant improvements over standard Flangeless Fittings.The lock ring offers uniform compression on the ferrule while operating as a bearing against the nut. Thus, the nut can spin freely against the ferrule, preventing the tubing from twisting during the tightening process. This feature helps eliminate subsequent loosening of the nut, making the Super Flangeless system ideal for applications subject to vibration. These products are also well suited for connections that need to be broken frequently, since the lock ring holds the ferrule in place on the tubing until intentionally removed. Use the LT-300 Removal Tool to release Super Flangeless Ferrules from tubing for repositioning.

Our other fittings for 10-32 flat-bottom ports, VacuTight™ Fittings, are available. These fittings are designed to provide airtight connections under vacuum and low pressure conditions.

For 1/16" OD Tubing (10-32 Flat-Bottom Ports)

Several PEEK™ nut styles are available to connect 1/16" OD tubing into 10-32 flat-bottom ports. Use these fittings with rigid and semi-rigid tubing, such as PEEK, stainless steel and fluoropolymer materials (e.g., FEP, PFA, and ETFE). Connect capillary tubing using our NanoTight™ FEP Tubing Sleeves.

The M-650 Ferrule is made of PEEK polymer and the lock ring from passivated 316 stainless steel.

Ultra High Performance version of a Super Flangeless Fitting is available.

$3.84

M-654 , Nut SF Knurl-Hex 1/16 ...

For Flat-Bottom Ports
  • Designed to Hold to Higher Pressures than Standard Flangeless Fittings
  • Eliminates Loosening of Nuts Caused by Tubing Twist
Upchurch Scientific® Super Flangeless Fittings are designed to provide significant improvements over standard Flangeless Fittings.The lock ring offers uniform compression on the ferrule while operating as a bearing against the nut. Thus, the nut can spin freely against the ferrule, preventing the tubing from twisting during the tightening process. This feature helps eliminate subsequent loosening of the nut, making the Super Flangeless system ideal for applications subject to vibration. These products are also well suited for connections that need to be broken frequently, since the lock ring holds the ferrule in place on the tubing until intentionally removed. Use the LT-300 Removal Tool to release Super Flangeless Ferrules from tubing for repositioning.

Our other fittings for 10-32 flat-bottom ports, VacuTight™ Fittings, are available. These fittings are designed to provide airtight connections under vacuum and low pressure conditions.

For 1/16" OD Tubing (10-32 Flat-Bottom Ports)

Several PEEK™ nut styles are available to connect 1/16" OD tubing into 10-32 flat-bottom ports. Use these fittings with rigid and semi-rigid tubing, such as PEEK, stainless steel and fluoropolymer materials (e.g., FEP, PFA, and ETFE). Connect capillary tubing using our NanoTight™ FEP Tubing Sleeves.

The M-650 Ferrule is made of PEEK polymer and the lock ring from passivated 316 stainless steel.

Ultra High Performance version of a Super Flangeless Fitting is available.
$3.84

M-655 , Nut SF Long Hex Head 1...

For Flat-Bottom Ports

  • Designed to Hold to Higher Pressures than Standard Flangeless Fittings
  • Eliminates Loosening of Nuts Caused by Tubing Twist

Upchurch Scientific® Super Flangeless Fittings are designed to provide significant improvements over standard Flangeless Fittings.The lock ring offers uniform compression on the ferrule while operating as a bearing against the nut. Thus, the nut can spin freely against the ferrule, preventing the tubing from twisting during the tightening process. This feature helps eliminate subsequent loosening of the nut, making the Super Flangeless system ideal for applications subject to vibration. These products are also well suited for connections that need to be broken frequently, since the lock ring holds the ferrule in place on the tubing until intentionally removed. Use the LT-300 Removal Tool to release Super Flangeless Ferrules from tubing for repositioning.

Our other fittings for 10-32 flat-bottom ports, VacuTight™ Fittings, are available. These fittings are designed to provide airtight connections under vacuum and low pressure conditions.

For 1/16" OD Tubing (10-32 Flat-Bottom Ports)

Several PEEK™ nut styles are available to connect 1/16" OD tubing into 10-32 flat-bottom ports. Use these fittings with rigid and semi-rigid tubing, such as PEEK, stainless steel and fluoropolymer materials (e.g., FEP, PFA, and ETFE). Connect capillary tubing using our NanoTight™ FEP Tubing Sleeves.

The M-650 Ferrule is made of PEEK polymer and the lock ring from passivated 316 stainless steel.

Ultra High Performance version of a Super Flangeless Fitting is available.

$3.83