B7 Stud bolts - B7 Threaded Tods - 2H Hexagon Nuts

For The Petrochemical - and Off-Shore Industry

Grades: Stud bolts and threaded rods grade B7 according to the American Standard ASTM A 193 and associated hexagon nuts grade 2H according to ASTM A 194 are the most popular grade and available form stock. Grade (ASTM) is an American designation covering the chemical composition as well as the mechanical properties.

Chemical Composition
Standard Grade Most important elements Corresponding materials
C Cr Mo Germany United Kingdom France
DIN Werkst.nr. BS AFNOR
ASTM A 193 B7 0.37-0.49 0.75-1.20 0.15-0.25 42CrMo4 1.7225 1506-621GrH 42 CD 4
ASTM A 194 2H min. 0.4 - - C 45 1.0503 1506-162 C45d

Mechanical Properties

Grade Tensile strength min. 0.2% Yield strength min. Elongation min. % Contraction min. % Hardness Tempering temp. min. °C
HB HRC
B7 N/mm² 860 720 16 50 - - 593
psi 125000 105000
2H max. - - - - 352 38 -
min. 248 24

Double End Studs With Reduced Shank - With 2 Hexagon Nuts - Steel

d1 M12 M16 M20 M24 M27 M30
P 1.75 2 2.5 3 3 3.5
d2 8.5 12 15 18 20.5 23
b 20 23 28 32 35 39
m 12 16 20 24 27 30
s 22 27 32 36 41 46

 

Items Code Number

d1 x L STEEL d1 x L STEEL d1 x L STEEL
M12 x 65   M20 x 95   M39  
M12 x 70   M20 x 100   M42  
M12 x 75   M20 x 105   105  
M12 x 80   M20 x 110   M48  
    M20 x 120      
M16 x 75          
M16 x 80   M24 x 110      
M16 x 85   M24 x 115      
M16 x 90   M24 x 125      
M16 x 100   M24 x 130      
M16 x 105   M24 x 140      
    M24 x 150      
M12 x 65   M36   M52  

Double Ends Studs

With Reduced Shank and With Hexagon Nuts

High requirement: By means of annealed, normalized, carbide - solution, quenced and tempered, warm-cold formed and precipitation hardened.

Quality: Double end studs are manufactured by approval of TÛV and also acc. to AD regulation WO and TRD sheet 100. When ordering double ends studs please mention always the material code. (see marking signs table below). the assoiciated hexagon nuts are supplied separately. The packaging and packing list are only mentioned by the material code of the bolts. For applications and calculations of double end nuts at pressure vessels.

Application: Double end studs are generally applied in the stringent construction sectors like nuclear reactor s and technology, turbines, boilers, high pressure tanks, high- capacity chemical vessels, chemical apparatus, ship building oil industry, petrochemistry, refrigeration plants, pipe lines, instruments, motor construction and offshore technics.

Certificates: Upon special request the inspection certificate 3.1A, 31 B and 3.1C can be delivere d acccoording DIN 50049 (= EN 10204).

Operation Temperature Ranges and Bolt/Nut Combination
Specs. Temperature Materialnr. Marking sign acc. to DIN 267-13
bolts nuts
DIN 267 - 13 AD MERBLATTW7 DIN 17240 + 700 ° C 2.4952 2.4952 SB/SB
+ 650 ° C 1.4986 1.4986 S/S
    1.4980 1.4980  
+ 580 ° C 1.4923 1.4923 V/V
    1.4913 1.4923 VW/V
+ 540 ° C 1.7709 1.7709 GA/GA
+ 500 ° C 1.7709 1.7258 GA/G
    1.7711 1.7709 GB/GA
+ 400 ° C 1.7258 1.7258 G/G
    1.7258 1.1181 G/YK
+ 350 ° C 1.1181 1.1181 YK/YK
    1.1181 1.0501 YK/Y
DIN-ISO 898-1 + 350 ° C     8.8
        5.6
- 10 ° C     4.6-2
AD-M. W10 DIN 17280 - 60 ° C 1.7219 1.7219 KA/KA
- 120 ° C 1.568 1.568 KB/KB
- 196 ° C 1.6906 1.6906  

Mechanical Properties

Material Properties
Grade Designation C Cr Important elements Max. continu temperature Tensile N/mm² Yield min. N/mm² Stretch % min. Notched bar process joule
Mo V
YK C35 0.32-0,39 - - - +350°C ² 500-600 280 22 55
G 24 CrMO 5 0.20-0,28 0.90-1,20 0.20-0.35 - +400°C ³ 600-750 440 18 103
GA 21 CrMoV 57 0.17-0,25 1,20-1,50 0.65-0.80 0.25-0.35 +540°C 700-850 550 16 69

Hexagon Nuts - ASTM a 194 Grade 2H - Steel

ANSI : B18.22
d Inch 1/2 5/8 3/4 7/8 1 1 1/8 1 1/4
mm 12.7 15.9 19.05 22.2 25.4 28.6 31.75
Thread per inch   13 11 10 9 8 8 8
H   12.3 15.5 18.65 21.85 25 28.2 31.75
F Inch 7/8 11/16 11/4 1 7/16 1 5/8 1 13/16 2
mm 22.2 27 31.75 36.5 41.3 46.05 50.8

 

d Inch 1 3/8 1 1/2 1 5/8 1 3/4 1 7/8 2
mm 34.9 38.1 41.3 44.45 47.65 50.8
Thread per inch   8 8 8 8 8 8
H   34.15 37.3 40.5 43.65 46.85 50
F Inch 2 3/16 2 3/8 2 9/16 2 3/4 2 15/16 3 1/8
mm 55.55 60.3 65.1 69.85 74.6 79.4

Items Code Number

d STEEL d STEEL d STEEL
1/2   1 1/8   1 3/4  
5/8   1 1/4   1 7/8  
3/4   1 3/8   2 "  
7/8   1 1/2   -  
1"   1 5/8   -  

Hexagon Nuts - ASTM A 194 Grade 2H - Steel

d M10 M12 M14 M16 M20 M22 M24 M27
P 1.5 1.75 2 6 2.5 2.5 3 3
m = d 10 12 14 16 20 22 24 27
d2 17 19 22 24 30 32 36 41

 

d M30 M33 M36 M39 M42 M45 M48 M52
P 3.5 3.5 4 4 4.5 4.5 5 5
m = d 30 33 36 39 42 45 48 52
d2 46 50 55 60 65 70 75 80

 

Items Code Number

d STEEL d STEEL d STEEL
M10   M24   M39  
M12   M27   M42  
M14   M30   M45  
M16   M33   M48  
M20   M36   M52  
M22   -   -  

Stud bolts With 2 Hexagon Nuts - Steel

BSI : ≈ 4882
d Inch 1/2 5/8 3/4 7/8 1 1 1/8 1 1/4
mm 12.7 15.9 19.05 22.2 25.4 28.6 31.75
Thread per inch   13 11 10 9 8 8 8
M   12.8 16.02 19.25 22.47 25.7 28.93 31.77
B inch 7/8 11/16 11/4 1 7/16 1 5/8 1 13/16 2
mm 22.2 27 31.75 36.5 41.3 46.05 50.8

 

d Inch 1 3/8 1 1/2 1 5/8 1 3/4 1 7/8 2
mm 34.9 38.1 41.3 44.45 47.65 50.8
Thread per inch   8 8 8 8 8 8
M   35 38.22 41.25 44.47 47.65 51.13
B inch 2 13/16 2 3/8 2 9/16 2 3/4 2 15/16 3 1/8
mm 55.55 60.3 65.1 69.85 74.6 79.4

Items Code Number

d x L Steel d x L Steel d x L Steel d x L Steel
1/2 x 2 "   3/4 x 5 1/4   1" x 5"   1 1/4 x 7"  
1/2 x 2 1/4   3/4 x 5 1/2   1" x 5 1/4   1 1/4 x 7 1/4  
1/2 x 2 1/2   3/4 x 5 3/4   1" x 5 1/2   1 1/4 x 7 1/2  
1/2 x 2 3/4   3/4 x 6"   1" x 5 3/4   1 1/4 x 7 3/4  
1/2 x 3"   3/4 x 6 1/4   1" x 6"   -  
1/2 x 3 1/4   3/4 x 6 1/2   1" x 6 1/4   1 1/4 x 8"  
1/2 x 3 1/2   3/4 x 6 3/4   1" x 6 1/2   1 1/4 x 8 1/4  
1/2 x 3 3/4   3/4 x 7"   1" x 6 3/4   1 1/4 x 8 1/2  
1/2 x 4"   3/4 x 7 1/4   1" x 7"   1 1/4 x 8 3/4  
1/2 x 4 1/4   3/4 x 7 1/2   1" x 7 1/4   1 1/4 x 9"  
1/2 x 4 1/2   3/4 x 8"   1" x 7 1/2   1 1/4 x 9 1/2  
1/2 x 4 3/4   3/4 x 8 1/4   1" x 7 3/4   1 1/4 x 10"  
1/2 x 5"   3/4 x 8 1/2   1" x 8"   1 1/4 x 11"  
-   3/4 x 8 3/4   3/4 x 8 3/4   1 1/4 x 12"  
5/8 x 2 1/4   3/4 x 9"   1" x 8 1/2   1 1/4 x 13"  
5/8 x 2 1/2   3/4 x 9 1/2   1" x 8 3/4   -  
5/8 x 2 3/4   3/4 x 10"   1" x 9"   1 3/8 x 9"  
5/8 x 3"   -   1" x 9 1/4   1 1/8 x 9 1/2  
5/8 x 3 1/4   7/8 x 3 1/2   1" x 9 1/2   1 3/8 x 10"  
5/8 x 3 1/2   7/8 x 3 3/4   1" x 9 3/4   1 3/8 x 11"  
5/8 x 3 3/4   7/8 x 4"   1" x 10"   1 3/8 x 12"  
5/8 x 4"   7/8 x 4 1/4   1" x 11"   -  
5/8 x 4 1/4   7/8 x 4 1/2   1" x 12"   1 1/2 x 8"  
5/8 x 4 1/2   7/8 x 4 3/4   -   1 1/2 x 9 1/2  
5/8 x 4 3/4   7/8 x 5"   1 1/8 x 5"   1 1/2 x 10"  
5/8 x 5"   7/8 x 5 1/4   1 1/8 x 5 1/4   1 1/2 x 10 1/2  
5/8 x 5 1/4   7/8 x 5 1/2   1 1/8 x 5 1/2   1 1/2 x 10 3/4  
5/8 x 5 1/2   7/8 x 5 3/4   1 1/8 x 5 3/4   1 1/2 x 11"  
5/8 x 5 3/4"   7/8 x 6"   1 1/8 x 6"   1 1/2 x 12"  
5/8 x 6"   7/8 x 6 1/4   1 1/8 x 6 1/4   -  
5/8 x 6 1/4   7/8 x 6 1/2   1 1/8 x 6 1/2   1 5/8 x 10"  
5/8 x 6 1/2   7/8 x 6 3/4   1 1/8 x 6 3/4   1 5/8 x 11"  
5/8 x 6 3/4   7/8 x 7"   1 1/8 x 7"   1 5/8 x 12"  
5/8 x 7"   7/8 x 7 1/4   1 1/8 x 7 1/4   1 5/8 x 13"  
5/8 x 8"   7/8 x 7 1/2   1 1/8 x 7 1/2   -  
-   7/8 x 7 3/4   1 1/8 x 8"   1 3/4 x 11"  
3/4 x 2 1/4   7/8 x 8"   1 1/8 x 8 1/2   1 3/4 x 12"  
3/4 x 2 3/4   7/8 x 8 1/4   1 1/8 x 9"   -  
3/4 x 3"   7/8 x 8 1/2   1 1/8 x 9 1/2   1 7/8 x 12"  
3/4 x 3 1/4   7/8 x 8 3/4   1 1/8 x 10"   1 7/8 x 13"  
3/4 x 3 1/2   7/8 x 9"   1 1/8 x 11"   1 7/8 x 14"  
3/4 x 3 3/4   7/8 x 9 1/2   1 1/8 x 12"   -  
3/4 x 4"   7/8 x 10"   -   2" x 7 1/2  
3/4 x 4 1/4   -   1 1/4 x 6"   2" x 13"  
3/4 x 4 1/2   1" x 4"   1 1/4 x 6 1/4   2" x 14"  
3/4 x 4 3/4   1" x 4 1/4   1 1/4 x 6 1/2   2" x 15"  
3/4 x 5"   1" x 4 1/2   1 1/4 x 6 3/4   -  

Stud bolts With Hexagon Nuts - Steel

BSI : ≈ 4882
d M12 M14 M16 M20 M22 M24
P 1.75 c 2 2.5 2.5 3
M 2 12 14 16 20 22 24
B 19 22 24 30 32 36

 

Items Code Number

d x L Steel d x L Steel d x L Steel
M12 x 55   M16 x 150   M22 x 120  
M12 x 65   -   M22 x 125  
M12 x 70   M20 x 75   M22 x 130  
M12 x 75   M20 x 85   M22 x 135  
M12 x 80   M20 x 90   M22 x 140  
M12 x 90   M20 x 95   M22 x 145  
M12 x 95   M20 x 100   M22 x 150  
M12 x 100   M20 x 105   M22 x 160  
-   M20 x 110   M22 x 165  
M14 x 65   M20 x 115   M22 x 170  
M14 x 75   M20 x 120   M22 x 180  
M14 x 80   M20 x 125   M22 x 200  
M14 x 90   M20 x 130   -  
M14 x 100   M20 x 135   M24 x 115  
-   M20 x 140   M24 x 125  
M16 x 65   M20 x 145   M24 x 130  
M16 x 70   M20 x 150   M24 x 140  
M16 x 75   M20 x 160   M24 x 150  
M16 x 80   M20 x 170   M24 x 160  
M16 x 85   M20 x 180   M24 x 165  
M16 x 90   M20 x 190   M24 x 170  
M16 x 95   M20 x 200   M24 x 180  
M16 x 100   M20 x 210   M24 x 190  
M16 x 110   -   M24 x 200  
M16 x 115   M22 x 95   M24 x 215  
M16 x 120   M22 x 100   M24 x 230  
M16 x 125   M22 x 110   M24 x 250  
M16 x 140   M22 x 115   -  

Threaded Rods - ASTM A 193 Grade B7 - Length - 1 Meter : Steel

d M10 M12 M16 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52
P 1.5 1.75 2 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5 5

 

Items Code Number

d STEEL d STEEL d STEEL
M10   M24   M39  
M12   M27   M42  
M16   M30   M45  
M20   M33   M48  
M22   M36   M52  

Threaded Rods - ASTM A 193 Grade B7 - Length - 1 Meter : Steel

d Inch 1/2 5/8 3/4 7/8 1 1 1/8
mm 12.7 15.9 19.05 22.2 25.4 28.6
Thread per inch   13 11 10 9 8 8

 

d Inch 1 1/4 1 3/8 1 1/2
mm 31.75 34.9 38.1
Thread per inch   8 8 8

Items Code Number

d STEEL d STEEL d STEEL
1/2   1"   1 3/8  
5/8   1 1/8   1 1/2  
3/4   1 1/4   -  
7/8   -   -  
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