GASKET 7N6957 - Caterpillar

Straight Thread O-Ring Plugs
Illustration 1 g00911999
Table 1
Ferrous Straight Thread O-Ring Plug
Torques for Mating with Ferrous Materials
Thread Size
Inch Internal Hex Plug Torque External Hex Plug Torque
5/16 7 1 N m (62 9 lb in) 13 2 N m (115 18 lb in)
3/8 13 2 N m (115 18 lb in) 20 3 N m (177 27 lb in)
7/16 20 3 N m (177 27 lb in) 40 6 N m (30 4 lb ft)
1/2 25 4 N m (221 35 lb in) 45 7 N m (33 5 lb ft)
9/16 45 7 N m (33 5 lb ft) 60 9 N m (44 7 lb ft)
3/4 80 12 N m (59 9 lb ft) 100 15 N m (74 11 lb ft)
7/8 110 17 N m (81 13 lb ft) 130 20 N m (96 15 lb ft)
1 1/16 180 27 N m (133 20 lb ft) 220 33 N m (162 24 lb ft)
1 3/16 220 33 N m (162 24 lb ft) 260 39 N m (192 29 lb ft)
1 5/16 300 45 N m (221 33 lb ft) 350 53 N m (258 39 lb ft)
1 5/8 350 53 N m (258 39 lb ft) 400 60 N m (295 44 lb ft)
1 7/8 420 63 N m (310 46 lb ft) 420 63 N m (310 46 lb ft)
2 1/2 500 75 N m (369 55 lb ft) 500 75 N m (369 55 lb ft) Note: Use 50 percent of the torque values from Table 1 when the fitting or the port material is nonferrous.
Table 2
Metric Ferrous Straight Thread O-Ring Plug
Torques for Mating with Ferrous Materials
Thread Size
Metric Internal Hex Plug Torque External Hex Plug Torque
M8 10 2 N m (89 18 lb in) 10 2 N m (89 18 lb in)
M10 17 3 N m (150 27 lb in) 20 3 N m (177 27 lb in)
M12 25 4 N m (221 35 lb in) 35 5 N m (26 4 lb ft)
M14 45 7 N m (33 5 lb ft) 45 7 N m (33 5 lb ft)
M16 55 8 N m (41 6 lb ft) 55 8 N m (41 6 lb ft)
M18 70 11 N m (52 8 lb ft) 90 13 N m (66 10 lb ft)
M20 80 12 N m (59 9 lb