BOLT DATA - TORQUE - THREAD STRENGTH CALCULATION ISO METRIC
COARSE SCREW THREADS TO AS 1275 BOLT DATA
BOLTING STANDARD PROPERTY CLASS DIAMETER PITCH CORE AREA TENSILE
STRESS AREA SHANK AREA MINIMUM TENSILE STRESS YIELD STRESS PROOF
STRESS #N/A #N/A #N/A #N/A #N/A #N/A #N/A mm mm mm2 mm2 mm2 MPa MPa
MPa
PREFERRED BOLT TORQUE
BOLT UTILISATION BASED ON PREFERRED BOLT UTILISATION BOLT
CONDITION TORQUE COEFFICIENT (NUT FACTOR) BOLT LOAD BASED ON
PREFERRED BOLT LOAD PREFERRED BOLT TORQUE
% OF YIELD STRESS #N/A #N/A #N/A kN Nm
NUT DATA (NOT APPLICABLE IF USING A COMPATIBLE NUT)NUT MATERIAL
NUT PLATE THICKNESS NUT MATERIAL ULTIMATE TENSILE STRESS NUT
MATERIAL YIELD STRESS #N/A #N/A mm MPa MPa
THREAD STRENGTH (NOT APPLICABLE IF USING A COMPATIBLE NUT)
ULTIMATE BOLT LOAD THREAD ENGAGEMENT TO DEVELOP FULL BOLT
STRENGTH THREAD ENGAGEMENT TO YIELD THREADS AT FULL BOLT STRENGTH
#N/A FORCE REQUIRED TO STRIP mm LENGTH OF THREADS FORCE REQUIRED TO
YIELD mm LENGTH OF THREADS
#N/A #N/A #N/A #N/A #N/A
kN mm mm mm kN kN
SELECTED BOLT LOAD & TORQUE (NOT APPLICABLE IF USING A
COMPATIBLE NUT)
REQUIRED SAFETY FACTOR ON THREAD YIELD RECOMMENDED BOLT LOAD
RECOMMENDED BOLT LOAD AS A % OF YIELD STRESS RECOMMENDED BOLT
TORQUE SELECTED BOLT TORQUE SELECTED BOLT LOAD SELECTED BOLT LOAD
AS A % OF YIELD STRESS #N/A
#N/A #N/A #N/A #DIV/0! #DIV/0!
kN % Nm Nm kN %
TORQUE VALUES CALCULATED USING FORMULA T = KDP WHERE T = TORQUE
(Nm), K = TORQUE COEFFICIENT, D = NOMINAL DIAMETER (mm), P = BOLT
CLAMP LOAD (kN)
97960814.xls.ms_office
BOLT STDS & CLASSES 1 AS 1110.1 AS 1110.2 AS 1111.1 AS
1111.2 AS 1252 0 2 3 4 8.8 10.9 12.9 8.8 10.9 12.9 4.6 4.6 8.8 ###
#N/A #N/A
BOLT DIAMETERS 1 AS 1110.1 AS 1110.2 AS 1111.1 AS 1111.2 AS 1252
0 2 5 5 5 5 16 3 6 6 6 6 20 4 8 8 8 8 22 5 10 10 10 10 24 6 12 12
12 12 27 7 14 14 14 14 30 8 16 16 16 16 36 9 18 18 18 18 10 20 20
20 20 11 22 22 22 22 12 24 24 24 24 13 27 27 27 27 14 30 30 30 30
15 33 33 33 33 16 36 36 36 36 17 39 39 39 39 18 42 42 42 42 19 45
45 45 45 20 48 48 48 48 21 52 52 52 52 22 56 56 56 56 23 60 60 60
60 24 64 64 64 64
BOLT PITCHES & AREAS 1 BOLT SIZE (mm) 5 6 8 10 12 14 16 18
20 22 24 27 30 33 36 39 42 45 48 52 56 60 64 0 2 PITCH
### ### ### ### ### ### ### ### ### ### ### ### ### ### ### ###
### ### ### ### ### ### ###
(mm) 0.8 1 1.25 1.50 1.75 2.00 2.00 2.50 2.50 2.50 3.00 3.00
3.50 3.50 4.00 4.00 4.50 4.50 5.00 5.00 5.50 5.50 6.00 #N/A
MECHANICAL PROPERTIES 1 2 BOLT MIN TENSILE STRESS GRADE (MPa)
d16 mm 4.6 8.8 10.9 12.9 400 800 1040 1220
0 0
#N/A #N/A
STRENGTH OF METRIC THREADS BOLT TORQUE COEFFICIENTS 4 5 AREAS
(mm2) TENSILE SHANK STRESS 14.2 19.6 20.1 28.3 36.6 50.3 58.0 78.5
84.3 113 115 154 157 201 192 254 245 314 303 380 353 452 459 573
561 707 694 855 817 1018 976 1195 1121 1385 1306 1590 1473 1810
1758 2124 2030 2463 2362 2827 2676 3217 #N/A #N/A 1 BOLT CONDITION
2 K
T PITCHES & AREAS 3
TENSILE STRENGTH OF THE BOLT MA
CORE 12.7 17.9 32.8 52.3 76.2 105 144 175 225 282 324 427 519
647 759 913 1045 1224 1377 1652 1905 2227 2520 #N/A
CHANICAL PROPERTIES 3 4 5 6 7 MIN TENSILE STRESS YIELD STRESS
PROOF STRESS (MPa) (MPa) (MPa) d>16 mm d16 mm d>16 mm d16 mm
d>16 mm 400 830 1040 1220 240 640 940 1100 240 660 940 1100 225
580 830 970 225 600 830 970
1px1 (MOLY)V 0.18 AS RECEIVED 0.20 AS RECEIVED OR LIGHTLY OILED
& LOCTITE 771 0.13 BOWMAN ANTI-SEIZE 0.12 CADMIUM PLATED 0.17
CADMIUM PLATED (DEGREASED) 0.20 CADMIUM PLATED (LIGHTLY OILED) 0.14
CADMIUM PLATED (LIGHTLY OILED & LOCTITE 243) 0.13 CLEAN,
NONPLATED, AS RECEIVED 0.20 COPPER BASED ANTI-SEIZE 0.16 DEGREASED
& LOCTITE 243 0.20 DRY 0.30 EXPOSED TO ELEMENTS, BEGINNING TO
OXIDISE0.30 GALVANISED (DEGREASED) 0.42 GALVANISED (LIGHTLY OILED)
0.22 GENERAL MACHINE OIL 0.20 GREASE 0.16 GREASE (HEAVY) 0.14 HOT
DIPPED GALVANISED 0.25 INORGANIC SILICATE (IOZ) 0.17 LIGHTLY OILED
0.20 LIGHTLY OILED & LOCTITE 243 0.14 LOCTITE MOLY PASTE 0.11
LOW FRICTION OIL 0.15 MOLYBDENUM DISULPHIDE BASED GREASE 0.14
MOLYBOND GA50 0.14 MOLYKOTE 0.18 MOLYKOTE P74 0.14 NICKEL BASED
ANTI-SEIZE 0.15 NEVER-SEIZE (PASTE) 0.17 NONPLATED, BLACK FINISH
0.30 PHOSPHATED (LIGHTLY OILED) 0.14 PHOSPHATED (LIGHTLY OILED
& LOCTITE 243) 0.11 PHOSPHATED (DEGREASED) 0.24 PHOSPHATED
(DEGREASED & LOCTITE 243) 0.14 SOLID PTFE FILM 0.12 TEFLON 7630
0.09 WAXED 0.10 XYLAN 0.10 ZINC PLATED 0.22
ULTIMATE TENSILE STRENGTH OF THE NUT M
LENGTH OF THREAD ENGAGEMENT REQUIRED TO DEVELOP FULL
STRENGTH:
LENGTH OF THREAD ENGAGEMENT REQ'D TO DEVELOP FU
LENGTH OF THREAD ENGAGEMENT REQUIRED TO YIELD THREAD AT FULL
STRE
LENGTH OF THREAD ENGAGEMENT REQ'D TO DEVELOP FU
#N/A #N/A
#N/A #N/A
#N/A
#N/A #N/A
#N/A
ZINC PLATED (DRY) ZINC PLATED (DEGREASED) ZINC PLATED (DEGREASED
& LOCTITE 243) ZINC PLATED (LIGHTLY OILED) ZINC PLATED (LIGHTLY
OILED & LOCTITE 243) 0
0.29 0.14 0.15 0.18 0.16 #N/A
LENGTH OF THREAD ENGAGEMENT REQUIRED TO YIELD THREAD AT FULL S
SELECTED LENGTH OF THREAD ENGAGEMENT
SELECTED LENGTH OF THREAD EN
RECOMMENDED BOLT TORQUE
SELECTEDED BOLT TORQUE
NUT PLATE MECHANICAL PROPERTIES BOLT STANDARD = BOLT PROPERTY
CLASS = TENSILE STRENGTH OF THE BOLT MATERIAL, Sst = YIELD STRESS
OF THE BOLT MATERIAL = 0.0 0.0 #N/A MPa #N/A MPa 0 0 mm MPa MPa 1
MATERIAL 2 ULTIMATE TENSILE STRESS (MPa) 300 410 430 450 480 #N/A
430 460 490 3 4 5 6 7 8 YIELD STRESS (MPa)
40 50 80 40 50 80 50 80 50 80 50 80 50 50 80 50 80 50