Case IH OPTUM 270 CVT - Page 20

INTRODUCTION
NOTE:IntheImperialunitstables,thenominalsizes,1/4(0.25)in(inch)and5/16(0.3125)in(inch)hardwaretorque
specicationsareshownasaNewtonmeters(pound-inches)numericalvalue.
Nominalsizes3/8(0.375)in(inch)through1(1.0)in(inch)hardwaretorquespecicationsareshownasaNewton
meters(pound-feet)numericalvalue.
Inchhexhead(non-ange)hardware
Plain(PLN)–anunplatedhardwarenishwithresidualmanufacturingoils
Zinc-dichromate(ZND)–ayellowcoloredchemicalplatingformulayellowappliedtothehardware
Nominalsize
SAEGrade
(GR)5
boltandnut
SAEGrade
(GR)8
boltandnut
Locknut
GRB
w/GR5bolt
Locknut
GRC
w/GR8bolt
PLNandZNDPLNandZNDZNDZND
N·m(lbin)N·m(lbin)N·m(lbin)N·m(lbin)
1/4(0.25)in13(115)18(159)7.2(64)10(89)
5/16(0.3125)in27(239)38(336)14.9(132)21(186)
N·m(lbft)N·m(lbft)N·m(lbft)N·m(lbft)
3/8(0.375)in47(35)67(49)26(19)37(27)
7/16(0.4375)in76(56)107(79)42(31)59(44)
1/2(0.50)in116(85)164(121)64(47)90(67)
9/16(0.5625)in167(123)236(174)92(68)130(96)
5/8(0.625)in231(170)326(240)127(94)179(132)
3/4(0.75)in410(302)578(426)226(166)318(234)
7/8(0.875)in660(486)931(687)363(267)512(378)
1(1.0)in989(729)1396(1030)544(401)768(567)
Inchangeheadhardware
Plain(PLN)–anunplatedhardwarenishwithresidualmanufacturingoils
Zinc-dichromate(ZND)–ayellowcoloredchemicalplatingformulayellowappliedtothehardware
Nominalsize
SAEGrade
(GR)5
boltandnut
SAEGrade
(GR)8
boltandnut
Flangelocknut
GRF
w/GR5bolt
Flangelocknut
GRG
w/GR8bolt
PLNandZNDPLNandZNDZNDZND
N·m(lbin)N·m(lbin)N·m(lbin)N·m(lbin)
1/4(0.25)in14(124)20(177)15.4(136)22(195)
5/16(0.3125)in29(257)42(372)32(283)46(407)
N·m(lbft)N·m(lbft)N·m(lbft)N·m(lbft)
3/8(0.375)in52(38)74(54)57(42)81(9)
7/16(0.4375)in84(62)118(87)92(68)130(96)
1/2(0.50)in127(94)180(133)140(103)198(146)
9/16(0.5625)in184(136)259(191)202(150)285(210)
5/8(0.625)in254(187)358(264)279(206)394(290)
3/4(0.75)in450(332)636(469)495(365)700(516)
7/8(0.875)in725(535)1024(755)798(589)1126(831)
1(1.0)in1088(802)1536(1133)1197(882)1690(1246)
4819316130/11/2017
11