British Standard BSPT
 

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    d Pitch

TPI

Symbolic Identifier L X Y
Right Left
External Threading Inserts 3/8" 28 16ER28 BSPT 16EL28 BSPT 16.5 0.6 0.8
19 16ER19 BSPT 16EL19 BSPT 0.8 0.9
14 16ER14 BSPT 16EL14 BSPT 1.0 1.2
11 16ER11 BSPT 16EL11 BSPT 1.1 1.5
Inner  Threading Inserts 3/8" 28 16NR28 BSPT 16NL28 BSPT ¡¡

16.5

¡¡

0.6 0.6
19 16NR19 BSPT 16NL19 BSPT 0.8 0.9
14 16NR14 BSPT 16NL14 BSPT 1.0 1.2
11 16NR11 BSPT 16NL11 BSPT 1.1 1.5