CALIBRADORES DE ROSCA CONICA: NPTF (Dryseal) ANSI B1.20.5
Medida Nominal medidas generales tolerancias de fabricacion
Paso Paso primitivo exterior       largos 0/- Paso +/- Cono.+/0 Semiang. < + /-
" h x 1'' mm mm mm       '
1/8'' 27 0,9408 9,519 9,957       25 5 7,5 15'
1/4'' 18 1,4111 13,906 13,101       25 5 10 15'
3/8'' 18 1,4111 15,926 16,584       25 5 10 15'
1/2'' 14 1,8142 19,772 20,616       25 5 15 10'
3/4'' 14 1,8142 25,117 25,961       25 5 15 10'
1'' 11 1/2 2,2087 31,461 32,489       25 7,5 20 10'
 
Calibre tapon roscado: NPTF (Dryseal) ANSI B1.20.5
 
Medida Nominal medidas generales tolerancias de fabricacion
Paso L1 LT L1 - p L1 L1 + p   largos 0/- Paso +/- Cono.+/0 Semiang. < + /-
" h x 1'' mm mm mm mm mm   '
1/8'' 27 10,0 90 3,631 4,572 5,513   25 5 7,5 15'
1/4'' 18 12,5 100 3,669 5,080 6,491   25 5 10 15'
3/8'' 18 16,0 118 4,685 6,096 7,507   25 5 10 15'
1/2'' 14 16,0 106 6,314 8,128 9,942   25 5 15 10'
3/4'' 14 20,0 123 6,796 8,610 10,424   25 5 15 10'
1'' 11 1/2 16,0 127 7,951 10,160 12,368   25 7,5 20 10'