Example: barber

Measuring Screw Threads - Drain Plug

Measuring Screw ThreadsExternal Threads - Drain PlugsMeasure the diameter over the thread using a caliper. The caliper reads directly in inches(fractions) and for the nominal size just above the 0 point on the caliper. Above diagram shows about 1/2 .Worn Threads are usually the pitch or TPI using the Screw thread gauges. Compare the O/D and pitch with the thread data chart to establish the Threads - Sump HolesUsing the caliper, measure the Minor Diameter. The pitch can be checked as shown. Again refer to the data HEREor READ HERENOMINAL O/DINTERNAL EXTERNALMINOR Popular thread SizesAmerican National Standard Taper Pipe Threads (NPT)NomialO/D TPIM inor DiameterThread Size(mm)(mm)written as-1/4" 18 11 1/4 - 18 NPT3/8"17 18 3/8 - 18 NPT1/2"21 14 18 1/2 - 14 NPT3/4" 14 3/4 - 14 NPT1"33 29 1 - NPT1 1/4"42 38 1 1/4 - NPT 1 1/2"48 44 1 1/2 - NPTB ritish Standard Pipe Threads (BSP) may be ta

Unified Screw Threads O/D TPI Minor Diameter Thread Size (inch) (mm) written as-1/2" 13 UNC 10.5 1/2 - 13UNC 1/2" 20 UNF 11.5 1/2 - 20UNF 1/2" 24 UNS 11.5 1/2 - 24UNS

Tags:

  Screw, Thread, Measuring, Screw thread, Measuring screw threads

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Other abuse

Transcription of Measuring Screw Threads - Drain Plug

1 Measuring Screw ThreadsExternal Threads - Drain PlugsMeasure the diameter over the thread using a caliper. The caliper reads directly in inches(fractions) and for the nominal size just above the 0 point on the caliper. Above diagram shows about 1/2 .Worn Threads are usually the pitch or TPI using the Screw thread gauges. Compare the O/D and pitch with the thread data chart to establish the Threads - Sump HolesUsing the caliper, measure the Minor Diameter. The pitch can be checked as shown. Again refer to the data HEREor READ HERENOMINAL O/DINTERNAL EXTERNALMINOR Popular thread SizesAmerican National Standard Taper Pipe Threads (NPT)NomialO/D TPIM inor DiameterThread Size(mm)(mm)written as-1/4" 18 11 1/4 - 18 NPT3/8"17 18 3/8 - 18 NPT1/2"21 14 18 1/2 - 14 NPT3/4" 14 3/4 - 14 NPT1"33 29 1 - NPT1 1/4"42 38 1 1/4 - NPT 1 1/2"48 44 1 1/2 - NPTB ritish Standard Pipe Threads (BSP) may be tapered (BSPT)NomialO/D TPIM inor DiameterThread Size(mm)(mm)

2 Written as-1/4"13 19 11 1/4 BSP3/8" 19 3/8 BSP1/2" 1/2 BSP5/8"23 14 21 5/8 BSP3/4"26 14 24 3/4 BSP1"33 11 30 1 BSP1 1/4" 11 1 1/4 BSP1 1/2" 11 1 1/2 BSPISO Metric ThreadsNominal O/DPitchMinor DiameterThread Size(mm)(mm)(mm)written as-12 11 M12 x M12 x 10 M12 x 13 M14 x M14 x M16 x M18 x M20 x M22 x M24 x 2 22 M24 x 225 M25 x M26 x 2 25 M27 x 228 M28 x M30 x 2 28 M30 x 232 M32 x 2 30 M32 x 234 M34 x M36 x 2 34 M36 x 238 M38 x Screw ThreadsO/DTPIM inor DiameterThread Size(inch)(mm)written as-1/2"13 1/2 - 13 UNC1/2"20 1/2 - 20 UNF1/2"24 1/2 - 24 UNS9/16"18 9/16 -18 UNF5/8"11 5/8 - 11 UNC5/8"18 5/8 - 18 UNF3/4"10 3/4 - 10 UNC3/4"16 3/4 - 16 UNF3/4"20 3/4 - 20 UNEF3/4"24 UNS18 3/4 - 24 UNS7/8"14 7/8 - 14 UNF7/8"16 7/8 - 16UN1"8 UNC22 1 - 8 UNC1"12 UNF23 1 - 12 UNF1"18 UNS24 1 - 18 UNS1 1/16"12 1 1/16 - 12UN1 1/8"12 1 1/8 - 12 UNF1 1/4"12 1 1/4 - 12 UNF1 1/4"18 UNEF30 1 1/4 - 18 UNEF1 1/2"12 UNF36 1 1/2 - 12 UNF2"12 2 - 12 UNBritish Standard Screw ThreadsO/DTPIM inor DiameterThread Size(inch)(mm)

3 Written as-1/2"12 1/2 BSW1/2"16 BSF11 1/2 BSF5/8"11 5/8 BSW5/8"14 BSF14 5/8 BSF3/4"10 3/4 BSW3/4"12 BSF17 3/4 BSF1"8 BSW22 1 BSW1"10 BSF23 1


Related search queries