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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Item #

Item Name

Material

Head Style

Type of Tubing

Thread Size

Color

List Price

M-644-03

SuperFlnglss TyTight PEEK Nut

PEEK

Headless

Nut

14763

Green

$4.11
M-652

Nut SF Short Hex 1/16 PEEK Grn

PEEK

Flat Bottom Nut

Short Hex Head

11963

Green

$4.16
M-653

Nut SF Short Knurl 1/16 PEEK

PEEK

Flat Bottom Nut

Short Headless

11963

Green

$4.17
M-654

Nut SF Knurl-Hex 1/16 PEEK Grn

PEEK

Flat Bottom Nut

Long Knurl/Hex Head

11963

Green

$4.17
M-655

Nut SF Long Hex Head 1/16 PEEK

PEEK

Flat Bottom Nut

Long Hex Head

11963

Green

$4.16