Parafuso Sextavado Pesado ASTM-A193 / ASTM A-320


REFERÊNCIA
ASME B18.2.1 – 1996
(Tabelas 3 e 6)

par-sex-pesado-astm-193-astm-a320
Diâmetro NominalEFGHRLT L < ou = 6" / L > 6 Y
Máx.Min.Máx.Min.Máx.Min.Máx.Min.Máx.Min.Máx.Min.Máx.
1/213.08112.24222.22521.5925.65424.6128.2047.670.7620.25431.7538.19.779
5/816.30615.36726.97426.18731.16529.84510.2369.6011.5240.50838.144.4511.557
3/419.50718.51631.7530.78436.65235.12812.26811.5571.5240.50844.4550.812.7
7/822.73321.6436.52535.40742.16440.3614.313.4871.5240.50850.857.1514.122
125.95824.7941.27540.00547.6545.61815.92515.0112.2860.76257.1563.515.875
1.1/829.18427.88946.02444.60253.16250.8518.23716.7132.2860.76263.569.8518.135
1.1/432.43531.06450.849.22558.64856.10820.6519.0242.2860.76269.8576.218.135
1.3/835.66134.16355.57553.82264.1661.36622.30120.5742.2860.76276.282.5521.158
1.1/238.88737.33860.32558.4269.64666.59824.73922.912.2860.76282.5588.921.158
1.3/445.33943.58669.8567.61480.64577.08928.80326.7713.0481.01695.25101.625.4
251.7949.88579.37576.83591.64387.60432.0829.8453.0481.016107.95114.328.219
2.1/458.54756.23588.986.055102.64198.09436.14433.7054.8261.524120.6512728.219
2.1/264.99862.50998.42595.25113.639108.58540.20837.5664.8261.524133.35139.731.75
2.3/471.80568.859107.95104.444124.637119.07544.29741.4524.8261.524146.05152.431.75
378.25775.209117.475113.665135.636129.5949.14946.1014.8261.524158.75165.131.75

TOLERÂNCIA PARA COMPRIMENTOS "L"

Comprimento Nominal1/4" a 3/8"7/16" e 1/2"9/16" a 3/4"7/8" e 1"1.1/8" a 1.1/2"Acima de 1.1/2"
Até 1"-0.762-0.762-0.762
Acima de 1" até 2.1/2"-1.016-1.524-2.032-2.54-3.048-4.572
Acima de 2.1/2" até 4" -1.524-2.032-2.54-3.556-4.064-5.08
Acima de 4" até 6"-2.54-2.54-2.54-4.064-4.572-5.588
Acima de 6"-4.572-4.572-4.572-5.08-5.588-6.096

NOTAS: 1-) Espessura da Arruela sob a cabeça: para DN 3/4″ e menores = 0,381 a 0,635 mm e para DN maiores que 3/4″=0,381 a 0,889.
2-) Roscas: quando não especificado, usar: para O 1″ e menores – UNC- 2A, para O 1.1/8″ e maiores – 8UN-2A