Normalized tube record

0.409 in OD tube

A measured tube group centered on 0.409-inch outside diameter. It is separated from nominal drill-size classes until a verified equivalence is recorded.

0.409 in OD

Observed outside diameters0.409" (10.4 mm) · 0.409" (10.4 mm)

Known kit lengths4

Linked kits / projects18

Replacement listings0

Before substituting

Match OD, wall thickness, and length.

The class name helps discovery; it does not override the kit maker's current tube specification. A close drill size does not prove that two brass tubes are interchangeable.

Kit cross-reference

Known barrel lengths

Celtic knot FP pen kitsXiamen Rizheng · RZ-FP448Lower / bodybarrel position0.409" (10.4 mm)tube OD2.031" (51.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Celtic knot RB pen kitsXiamen Rizheng · RZ-RP448Lower / bodybarrel position0.409" (10.4 mm)tube OD2.031" (51.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Jr. Gentleman I end capped pen kitsXiamen Rizheng · RZ-FP380Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Jr. Gentleman I end capped pen kitsXiamen Rizheng · RZ-RP380Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Jr. Gentleman I upgraded FP pen kitsXiamen Rizheng · RZ-FP51Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Jr. Gentleman I upgraded RB pen kitsXiamen Rizheng · RZ-RP51Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Jr. Gentleman II fountain pen kitsXiamen Rizheng · RZ-FP210Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Jr. Gentleman II rollerball pen kitsXiamen Rizheng · RZ-RP210Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Over/under shotgun FP pen kitsXiamen Rizheng · RZ-FP379Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Over/under shotgun RB pen kitsXiamen Rizheng · RZ-RP379Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro fountain pen kitsXiamen Rizheng · RZ-FP234Lower / bodybarrel position0.409" (10.4 mm)tube OD2.031" (51.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro fountain pen kitsXiamen Rizheng · RZ-FP234NLower / bodybarrel position0.409" (10.4 mm)tube OD2.031" (51.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro rollerball pen kitsXiamen Rizheng · RZ-RP234Lower / bodybarrel position0.409" (10.4 mm)tube OD2.031" (51.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Retro rollerball pen kits new -Xiamen Rizheng · RZ-RP234NLower / bodybarrel position0.409" (10.4 mm)tube OD2.031" (51.6 mm)tube lengthNot recordedminimum blank cutOpen kit →Sirocco BallpointBeaufort Ink · No SKU recordedSingle barrelbarrel position0.409" (10.4 mm)tube OD2.217" (56.3 mm)tube lengthNot recordedminimum blank cutOpen kit →Snake skin fountain pen kitsXiamen Rizheng · RZ-FP486Lower / bodybarrel position0.409" (10.4 mm)tube OD2.102" (53.4 mm)tube lengthNot recordedminimum blank cutOpen kit →Super Sierra ClickBerea Hardwoods · No SKU recordedLower / bodybarrel position0.409" (10.4 mm)tube OD2.364" (60.0 mm)tube lengthNot recordedminimum blank cutOpen kit →Zephyr BallpointBeaufort Ink · No SKU recordedSingle barrelbarrel position0.409" (10.4 mm)tube OD2.217" (56.3 mm)tube lengthNot recordedminimum blank cutOpen kit →