Cryogenic Carpenter 455® Flange Bolting

With large temperature differences seen in cryogenic applications, the use of Belleville disc springs can play a significant role in the reduction of leaks. Materials with good cryogenic properties are PH (precipitation hardening) and Carpenter Technology stainless steels.

The load values listed in the table below are according to the calculated theoretical load curve based on the dimensions and material for each part number.

Part NumberBolt SizeFlat Load
lb
Torque *
ft-lb
FB1-15-4551/2"219215
FB1-25-4551/2"357125
FB2-15-4555/8"339730
FB2-25-4555/8"576651
FB3-15-4553/4"508551
FB3-25-4553/4"848185
FB4-15-4557/8"703981
FB4-25-4557/8"11594134
FB5-15-4551"9147123
FB5-25-4551"15275206
FB6-15-4551-1/8"11933179
FB6-25-4551-1/8"19899298
FB7-15-4551-1/4"15040251
FB7-25-4551-1/4"25046417
FB8-15-4551-3/8"18508340
FB8-25-4551-3/8"31046571
FB9-15-4551-1/2"22395400
FB9-25-4551-1/2"37305667
FB10-15-4551-5/8"26709550
FB10-25-4551-5/8"44585918
FB11-15-4551-3/4"31222751
FB11-25-4551-3/4"520071250
FB12-15-4551-7/8"361931001
FB12-25-4551-7/8"602541667
FB13-15-4552"416321102
FB13-25-4552"694441838
FB14-15-4552-1/4"534531592
FB14-25-4552-1/4"891552655
FB15-15-4552-1/2"666832203
FB15-25-4552-1/2"1114173680
FB16-15-4552-3/4"817482971
FB16-25-4552-3/4"1362054950
FB17-15-4553"979603872
FB17-25-4553"1627736434

* Torque values for sizes 1-1/8″ and larger are based on the 8-pitch thread series for flanged piping.