Does this identify a pipe thread from measured OD?

No. Identification and conformity require controlled designation data and the applicable gauging procedure; no nearest-size inference is made.

Does it provide tapping-drill sizes?

No. Drill/tap preparation depends on the exact thread, tool, material, engagement and controlled manufacturing process.

Does the worksheet recommend PTFE tape or thread sealant?

No. Seal selection and application require the exact connection, fluid, pressure, temperature, materials, regulations and manufacturer procedure.

Source-gated thread record — not automatic identification

Documented ISO Pipe-Thread Pitch Arithmetic

Convert a documented TPI value to pitch and preserve the exact controlled designation/source. No ISO diameter, tolerance, tapping-drill, gauge or sealing row is guessed.

No nearest-size matchNo drill tableNo sealant advice

Pitch from documented TPI

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Controlled family / designation

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Documented TPI

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Optional sourced diameter

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Pitch unit arithmetic only.

pitch [in/thread]=1/TPI; pitch [mm/thread]=25.4/TPI

The 25.4 mm/in conversion is exact. This is unit arithmetic applied to a documented TPI; it is not an ISO dimensional lookup or conformity calculation.

ISO 228-1:2000

Current edition 4, confirmed 2022. It covers parallel external and internal fastening pipe threads from 1/16 through 6. These threads are not suitable for pressure-tight joints made on the thread; when sealing is required, it is provided by tightening surfaces outside the threads with an appropriate seal. ISO 228-2:1987 covers verification by gauges.

ISO 7-1:1994 with Cor 1:2007

Current edition 3, confirmed 2026. It specifies designation, dimensions and tolerances for pipe threads where pressure-tight joints are made on the threads, from 1/16 through 6. ISO 7-2:2000 covers limit-gauge verification and notes that gauges alone do not completely control all thread quality/dimensions.

NEEDS_LICENSED_SOURCE: exact designation-specific diameters, tolerances, TPI rows, tapping-drill values, gauge limits and connection/seal rules. No such row is copied or reconstructed here.

Not determined

Thread identity from OD/TPI or interchangeability with NPT/other families.
External/internal, parallel/taper, class/tolerance or conformity.
Tapping drill, tap engagement, tool allowance or manufacturing process.
Seal type, tape dimensions/wrap count, torque, pressure rating or service compatibility.

Šaltiniai

ISO 228-1:2000; ISO 228-2:1987; ISO 7-1:1994; ISO 7-1:1994/Cor 1:2007; ISO 7-2:2000; NIST exact international inch.