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Build Your Own Column

Enter your exact specifications using the interactive drawing below. All fields correspond to the labeled callouts (A–H) on the column blueprint. We respond within 1 business day.

NOTE: For Column/Tube Blanks to your custom length just choose “Blank” from the “Thread/Blank” button on the drawing below. The menu will change to accommodate your selection.
Material: 316L-SS to ASTM A632

1/4" and 5/16" Column — Specification Drawing

DWG: Column Blank  ·  Symmetric  ·  Units: Inches unless noted
HPLC/UHPLC Column — Side Profile & Callout Dimensions
DFG FLATCEHAB

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  • PDF — Good: vector export from AutoCAD preserves geometry
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DescriptionCalloutExampleYour Dimension
Column OD OD 0.250"
Bore Diameter ID 2.1mm
Overall LengthA150mm
Thread B 1/4-40-2A
Thread LengthC.250/.270
Lead DiameterD.210/.215
Lead LengthE.040
Milled Flat CenterF.900
Milled Flat LengthG.190
Milled Flat AngleH0, 30, or 45
Milled Flat QtyFX1 or 2

Drawing Notes

  • Chamfer ID 45° × 0.006 max
  • Break all edges 0.008 max chamfer or radius
  • Interior surface finish — 10ra max
  • Exterior surface finish — 32ra max

Material Characteristics

  • Material: 316L
  • Chemistry Reference: ASTM A632
  • Manufacturing Method: Seamless
  • Internal Surface Condition: No visible defects, FOD or spirals after straightening. All organics, grease, drawing fluids, etc. are to be removed
  • ID Surface Finish: Mill Finish of 10 micro-inch (.25 micro-meter) Ra maximum
  • Post Draw ID Finish: Electropolished, chemical rinsed or customer specified
  • OD Surface Finish: 32 micro-inch or as determined by the customer

Quote Summary

Updates as you fill in dimensions

Type — Thread/Blanknot selected
OD — Column Diameternot selected
ID — Bore Diameternot selected
A — Overall Lengthnot entered
B — Threadnot entered
C — Thread Lengthnot entered
D — Lead Diameternot entered
E — Lead Lengthnot entered
F — Milled Flat Centernot entered
G — Milled Flat Lengthnot entered
H — Flat Anglenot selected
FX — Flat Qtynot selected

Your Contact Information

We respond to all quote requests within 1 business day.