Heyco Liquid Tight Cord Grips Torque Recommendations ChartOriginal Series-35 Fittings (LTF)
Heyco® Original Series-35 Liquid Tight Fittings
NPT Thread
Thread Size Description Heyco Part Numbers
(Black, Gray)
Locknut Torque Sealing Nut Torque
in. lbs Nm in. lbs Nm
3/8 NPT RLTF 3/8 3458, 3459 40 4,5 40 4,5
LTF 3/8 3228, 3229
Flex RLTF 3/8 3474, 3475
Flex LTF 3/8 3254, 3255
1/2 NPT LTF 1/2 3231, 3232 80 9,0 80 9,0
Flex LTF 1/2 3251, 3252
1/2 NPT LLTF 1/2 3200, 3201 80 9,0 120 13,6
Flex LLTF 1/2 3266, 3267
3/4 NPT RLTF 3/4 3460, 3461 169 19,1 130 14,7
LTF 3/4 3234, 3235
Flex RLTF 3/4 3462, 3463
Flex LTF 3/4 3239, 3242
1 NPT LTF 1 8437, 8438 200 - 225 22,6 - 25,4 225 - 250 25,4 - 28,2