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Nylon tubing sizes: inch (1/8 to 5/8 in OD) and metric (3 to 12 mm) OD × ID × wall, standard, D.O.T. and high-pressure nylon 11

What are the OD, ID and wall of 1/4 inch and 6 mm nylon tubing, and which push-in fittings does it fit? · Standard part · basis: Freelin-Wade nylon tubing datasheet (standard nylon inch and metric, D.O.T. nylon 11, high-pressure nylon 11); one maker; numbers only; pressure ratings left out on purpose

Also called: 1/4 nylon tubing id, 1/4 od nylon tubing wall, 6mm nylon tubing id, nylon tubing 8mm od 6mm id, 3/8 nylon tubing id, nylon tubing 5/32 od, dot nylon tubing wall, nylon 11 tubing 1/4 id .150, nylon tubing sizes chart, 12mm nylon tube id 10, 1/2 od nylon tubing id, 5/16 nylon tube id .232, nylon tubing 1/8 od id .093, nylon 12 tubing dimensions

Exact dimensions. True size, with no tolerance added.

sizes
33 in table

Notes

  • Nylon (polyamide) tubing is sold by OD, with the ID set by the wall: 1/4 in OD comes with three walls, 0.035 in (ID 0.180), 0.040 in (ID 0.170) and 0.062 in (ID 0.125) in the standard line, so '1/4 in nylon tubing' is not one size and the fitting must match the OD. Freelin-Wade's inch sizes are 1/8, 5/32, 3/16, 1/4, 5/16, 3/8, 1/2 and 5/8 in OD; the metric sizes are 3, 4, 5, 6, 8, 10 and 12 mm OD with 1 mm walls from 5 mm up (6 × 4 mm, 8 × 6 mm, 10 × 8 mm, 12 × 10 mm).
  • Each maker has its own families: 'standard nylon', 'D.O.T. nylon 11' (air-brake tubing, OD and wall only, no ID printed; the ID shown is OD − 2 × wall) and 'high-pressure nylon 11' (thicker walls, smaller IDs). Millimetres are inch × 25.4; metric inches are mm ÷ 25.4. Each ID and wall was checked against OD − 2 × wall: all agree to within 0.004 in for the inch rows and 0.1 mm for the metric rows.
  • Bend radius is shown (inches, as printed) for the standard inch line only; the metric bend radii in the datasheet are printed without units and are not copied. Working pressures at 75 °F and 150 °F, burst pressures and part numbers are left out. One more table in the datasheet (six sizes, 1/8 to 1/2 in, with a lighter pressure rating) has no heading in the text read and is not used; the datasheet also names a 'super soft' nylon 11 with no size table.
  • Push-to-connect fittings take tube by OD: push-to-connect-fitting-sizes. Silicone and PU tube: silicone-tube-and-fittings; PTFE: ptfe-fep-pfa-tubing-fractional-sizes; vinyl: tygon-vinyl-tubing-e-3603-sizes; polyethylene: polyethylene-tubing-lldpe-sizes. No files: flexible tubing is not drawn as a fixed shape.

Nylon tubing sizes: inch (1/8 to 5/8 in OD) and metric (3 to 12 mm)… size chart

familyOD as listedOD, inOD, mmID, inID, mmwall, inwall, mmbend radius, in (as printed)
Standard nylon (inch)1/80.1253.180.0792.010.0230.583/8
Standard nylon (inch)1/80.1253.180.0932.360.0160.411/2
Standard nylon (inch)5/320.15623.970.1062.690.0250.641/2
Standard nylon (inch)3/160.18754.760.1383.510.0250.645/8
Standard nylon (inch)1/40.256.350.1253.180.0621.573/8
Standard nylon (inch)1/40.256.350.1704.320.0401.023/4
Standard nylon (inch)1/40.256.350.1804.570.0350.891
Standard nylon (inch)5/160.31257.940.2325.890.0401.021-1/2
Standard nylon (inch)3/80.3759.530.2756.990.0501.271-1/2
Standard nylon (inch)1/20.512.700.3759.530.0621.572-1/4
Standard nylon (inch)5/80.62515.880.50012.700.0621.573-1/4
High-pressure nylon 11 (inch)1/80.1253.180.0731.850.0260.66—
High-pressure nylon 11 (inch)3/160.18754.760.1092.770.0390.99—
High-pressure nylon 11 (inch)1/40.256.350.1503.810.0501.27—
High-pressure nylon 11 (inch)3/80.3759.530.2255.720.0751.91—
High-pressure nylon 11 (inch)1/20.512.700.3508.890.0751.91—
D.O.T. nylon 11 (inch; no ID printed)1/80.1253.180.079 (derived)2.010.0230.58—
D.O.T. nylon 11 (inch; no ID printed)5/320.15623.970.092 (derived)2.340.0320.81—
D.O.T. nylon 11 (inch; no ID printed)3/160.18754.760.116 (derived)2.930.0360.91—
D.O.T. nylon 11 (inch; no ID printed)1/40.256.350.170 (derived)4.320.0401.02—
D.O.T. nylon 11 (inch; no ID printed)5/160.31257.940.232 (derived)5.910.0401.02—
Standard nylon (metric)3 mm0.118130.0711.80.0240.6—
Standard nylon (metric)4 mm0.157540.1062.70.0260.65—
Standard nylon (metric)5 mm0.196950.11830.0391—
Standard nylon (metric)6 mm0.236260.15740.0391—
Standard nylon (metric)8 mm0.31580.23660.0391—
Standard nylon (metric)10 mm0.3937100.31580.0391—
Standard nylon (metric)12 mm0.4724120.394100.0391—
High-pressure nylon 11 (metric)5 mm0.196950.11830.0391—
High-pressure nylon 11 (metric)6 mm0.236260.15740.0391—
High-pressure nylon 11 (metric)8 mm0.31580.23660.0391—
High-pressure nylon 11 (metric)10 mm0.3937100.31580.0391—
High-pressure nylon 11 (metric)12 mm0.4724120.394100.0391—

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Freelin-WadeNylon tubing: standard nylon (inch and metric), D.O.T. nylon 11, high-pressure nylon 11: OD, ID, wall, bend radiuswebMaker datasheet; numbers only

Xem scan

File coming

No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.

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Plain text: sheet.txt · JSON: /api/geometry?object=nylon-tubing-inch-metric-sizes

Schematic, not to scale.

Fits with

length
Push-to-connect pneumatic fittings: tube OD 4 to 12 mm and 1/8 to 1/2 in with the thread sizes offered12 sizes★ sheet
Silicone tube 1 × 3 to 10 × 14 mm (ID × OD), isometric render of a generated part
Silicone tube 1 × 3 to 10 × 14 mm (ID × OD)8 sizes★ 11 files
PTFE, FEP, PFA and ETFE fluoropolymer tubing: fractional sizes by ID, wall (standard, thin, lightweight) and industrial-spec ID × OD, 1/16 to 1/2 in21 sizes★ sheet
Tygon vinyl tubing (E-3603 / S3 E-3603): ID × OD × wall, 1/32 to 1 in ID, 1/16 to 1/4 in walls31 sizes★ sheet
Polyethylene tubing sizes (LLDPE): 1/8 to 3/4 in and 4 to 12 mm OD × ID × wall, plus Liquiflex POE16 sizes★ sheet
Aquarium airline tubing and fittings: 3/16 in vs 4 × 6 mm, check valves, connectors and Luer barb match5 sizes★ sheet
Drip irrigation tubing sizes: 1/8, 1/4 and 1/2 in poly tubing, ID x OD (0.170 x 0.250, 0.600 x 0.700 in)6 sizes★ sheet
Luer lock and Luer slip to barb adapters: tubing ID sizes 1/16 to 1/4 in (Nordson Value Plastics, Qosina), male and female21 sizes★ sheet
AN and JIC 37° flare fittings: dash sizes -3 to -20, thread, tube OD, hose ID, flare diameter9 sizes★ sheet

Questions

What is the ID of 1/4 inch nylon tubing?

0.170 in (4.32 mm) with a 0.040 in wall in the standard line; 0.180 in (0.035 in wall) and 0.125 in (0.062 in wall) are also made. High-pressure nylon 11 is 0.150 in ID (0.050 wall).

What is 6 mm nylon tubing?

6 mm OD × 4 mm ID (1 mm wall) in both the standard and high-pressure metric lines.

What is D.O.T. nylon tubing?

A nylon 11 line with an OD and wall only: 1/4 in is 0.040 in wall (ID derived 0.170 in); 5/32 in is 0.032 in wall.