ASTM A193 B7

 

India's first-ever manufacturer and supplier of ASTM A193 Grade B7 hex bolts and studs, view torque chart

ASTM A193 B7

 

Table Of Content

 

The ASTM A193 B7 material can be described as a bolting specification for applications taking place at medium to high temperatures. The ASTM A193 Grade B7m Bolts material is basically a chromium molybdenum steel, which can be heat treated. The ASTM A193 Grade B7 Bolts are perfect for applications that take place up to the temperature of 450 degrees C.

The grade b7 stud bolts possess high tensile strength, and they are particularly used in high temperature and high pressure applications. The gr b7 hex bolt can also be found in some special purpose applications. The sa 193 gr b7 material is quenched and tempered so as to develop some desired mechanical properties. Due to all these properties, the astm a193 b7 threaded rod can be found in construction projects, and they are quite easily available in the market. The sa193 gr b7 products are also used in pipe flange connections.

The A193 B7 Bolts are available in different types of finishes, like hot-dip galvanized, Xylan coated, and various other coatings. The surface finishes of the ASTM A193 B7m Bolts are customized as per the requirements of the application. However, it is to be noted that the coated A193-B7 Stud Bolts might not be capable of withstanding high temperatures like that of the uncoated bolts.

There are also other variants of the grade A193 B7 Bolts Material available, like the B7M grade. It has similar chemical properties like that of the ASTM A193 B7 Metric Bolts, but it comes with lower strength requirements and all-round hardness testing.

The ASTM A193 B7 Stud Bolts are heavily used in chemical construction and petroleum industries. The ASTM A193 B7 Heavy Hex Bolts are also used in high temperature and high pressure services, like in pressure vessels, valves, flanges, etc. The ASTM A193 B7 Hex Bolts come with a hex head design and they are driven by a wrench.

The ASTM A193 Grade B7 Bolts are built according to the requirements of a wide range of specifications and material design properties. The ASTM A193 Grade B7 Stud Bolts basically gain their strength from the heat-treating process, and they are always in demand due to their excellent heat resistance properties. The shape, size, and dimensions of the ASTM A193 B7 Fasteners can be customized as per the specific requirements given by the client.

 

ASTM A193 Grade B7 Bolts Price in india
Description Price
A193 B7 B7m PTFE Stud Bolts US $ 0.1 / Piece
ASTM A193-B7 Stud Bolt and Nuts US $ 0.01-1 / Piece
ASTM A193 B7 Stud Bolts Black US $ 1-1.2 / kg
A193 B7 Stainless Steel Carriage Stud Nuts and Bolts US $ 0.01 / Piece
Fastener PTFE A193 B7 Stud Bolt with Heavy Hex Nut US $ 0.019-0.023 / Piece
PTFE Fluorocarbon Coated A193 B7 Allen Screws Hex Bolts with 2h Nuts US $ 0.068-0.12 / Piece
Black Oxide ASTM A193 B7 B7m Stud Bolt US $ 0.1-5 / Piece
A193 B7 Square Head T Bolt US $ 1-2 / Piece
ASTM A193 Gr B7 Half Thread Bolt with Internal Thread US $ 800-1200 / Ton

 

Specification of ASTM A193 B7
Melt Origin East Europe/South America/JapanKorea
Dimensions ASME B18.3, B18.2.1
ASME/ ANSI ANSI B18.2.1, B18.3, DIN 931/ 933
Hex Nut (DIAMETER)
  • Inch: 1/4 inch - 4.5 inch
  • Diameter: Metric M6 - M110
Hex Bolt Inch Size
  • Length: 1/2 inch - 52 inch
  • Diameter: 1/2 inch - 4.0 inch
Hex Bolt Metric Size
  • Length: 12 - 1200 mm
  • Diameter: Metric M10 - M110
Stud Metric Size
  • Length: 12 MM - 6000 MM
  • Diameter: Metric M10 - M110
Bolts Metric Size
  • Diameter: Metric M10 - M48
Studs Inch sizes
  • Length: 1/2 inch - 236 inch
  • Diameter: 1/2 inch - 4.1/2 inch
Plain Washer (DIAMETER)
  • Inch: 1/2 inch - 4.1/2 inch
  • Diameter: Metric M6 - M110

 

Gr b7 hex bolt Sizes

Metric Sizes

Min Tempering Temperature, °C Diameter mm Hardness, max
593 over M64 to M100 321 HBW or 35 HRC
593 M64 and Under 321 HBW or 35 HRC
593 over M100 to M180 321 HBW or 35 HRC


 Inch Sizes

Min Tempering Temperature, °C Diameter Inch Hardness, max
1100 over 2.5 to 4 321 HBW or 35 HRC
1100 2.5 and under 321 HBW or 35 HRC
1100 over 4 to 7 321 HBW or 35 HRC

 

Materials of Grade b7 stud bolts

We offer these bolts in the following materials:

  • Plated​
  • Plain
  • Coated

 

ASTM A193 B7

 

Order ASME SA 193 Gr b7 Threaded Rod in accordance with metric and American standards. check weight chart

 

Most Selling Types of A193 B7 Bolts
ASTM A193 Grade B7 Bolts
ASTM A193 Grade B7 Bolts
Grade B7 Stud Bolts
Grade B7 Stud Bolts
ASTM A193 B7m Bolts
ASTM A193 B7m Bolts
Astm A193 B7 Threaded Rod
Astm A193 B7 Threaded Rod
Gr B7 Hex Bolt
Gr B7 Hex Bolt
ASTM A193 B7 Fasteners
ASTM A193 B7 Fasteners
ASTM A193 B7 Heavy Hex Bolts
ASTM A193 B7 Heavy Hex Bolts
A193 B7 Metric Bolts
A193 B7 Metric Bolts

 

Mumbai-based distributor of ASTM A193 B7m Bolts in Metric and Imperial (BSF, BSW, UNC, BA, and UNF) thread forms

 

Dimensions of ASTM A193 B7m Threaded Rod
Dimensions of ASTM A193 B7m Threaded Rod
Threaded Rod Weight per metre Threaded Rod Thread Threaded Rod Strength
Threaded Rod Class 70 Threaded Rod Class 80
UTS 0.2% proof UTS 0.2% proof
Kg/m kN kN kN kN
3.83 M27 321.3 206.6 367.2 275.4
1.31 M16 109.9 70.7 125.6 94.2
2.05 M20 171.5 110.3 196.0 147.0
0.72 M12 64.0 41.0 73.0 54.0
2.96 M24 247.1 158.9 282.4 211.8
14.65 M52 1230.6 791.1 1406.4 1054.8
6.84 M36 571.9 367.7 653.6 490.2
4.70 M30 392.7 252.6 448.8 336.6
8.14 M39 683.2 439.2 780.8 585.6
5.78 M33 485.8 312.3 555.2 416.4
9.38 M42 784.7 504.5 896.6 672.6
10.90 M45 914.2 587.7 1044.8 783.6
12.32 M48 1031.1 662.9 1178.4 883.8

 

ASTM A193 B7 Metric Bolts Marking
B7 our Logo & "B7" Grade Marking

 

Coating of ASTM A193 B7 Heavy Hex Bolts
  • Epoxy Coatings - Thermal cure
  • Molybdenum Disulfide
  • Phosphate coating - Manganese and Zinc
  • Flouropolymer coatings - Xylan and Teflon

 

We have a large supply of A193 B7 Bolts Material on hand, and we can help you save money by offering B7 Heavy Hex Bolts in the right size at a lower price.

 

ASME SA 193 Gr b7 Hex Bolts Dimensions
ASME SA 193 Gr b7 Hex Bolts Dimensions
NOMINAL SIZE (D) ACRO ASTM A479 THE FLATS HEAD THICKNE ASTM A479 BODY DIA. ACRO ASTM A479 CORNERS
F (MAX) F (MIN) H (MAX) H (MIN) D (MAX) D (MIN) C (MAX) C (MIN)
m20 30.00 29.16 12.88 12.12 20.00 19.67 34.64 32.95
m12 19.00 17.73 7.76 4.24 12.00 11.73 20.78 20.03
m14 22.00 20.67 9.09 8.51 14.00 13.73 24.25 23.35
m10 17.00 15.73 6.63 6.17 10.00 9.78 18.48 17.77
m16 24.00 23.67 10.32 9.68 16.00 15.73 27.71 26.75
m30 46.00 45.00 19.48 17.92 30.00 29.67 53.12 50.85
m24 36.00 35.00 15.44 14.56 24.00 23.67 41.57 39.55
m100 145.00 140.00 63.9 60.10 90.00 99.13 167.43 159.60
m36 55.00 53.80 23.38 21.63 36.00 35.61 63.51 60.79
m48 75.00 72.60 31.07 28.93 48.00 47.38 86.60 82.76
m56 85.00 82.20 36.2 33.80 56.00 55.26 98.15 93.71
m42 65.00 62.90 26.97 25.03 42.00 41.38 75.06 71.71
m64 95.00 91.80 41.32 38.68 64.00 63.26 109.70 104.65
m80 115.00 111.00 51.58 48.42 80.00 79.26 132.72 126.54
m72 105.00 101.40 46.45 43.55 72.00 71.26 121.24 115.60
m90 130.00 125.50 57.74 54.26 90.00 89.13 150.11 143.07

 

ASTM A193 B7 vs A320 L7

Chemical Composition B7 VS L7

Element L7 (AISI 4140) B7 (AISI 4140)
Manganese 0.65 - 1.10% 0.65 - 1.10%
Carbon 0.37 - 0.49% 0.37 - 0.49%
Sulfur, max 0.040% 0.040%
Molybdenum 0.15 - 0.25% 0.15 - 0.25%
Phosphorus, max 0.035% 0.035%
Chromium 0.75 - 1.20% 0.75 - 1.20%
Silicon 0.15 - 0.35% 0.15 - 0.35%
Nickel

 

Mechanical Properties B7 VS L7

Grade Size RA % min Yield, ksi, min Tensile ksi, min Elong, %, min
B7 Up to 2-1/2 50 105 125 16
L7 Up to 2-1/2 50 105 125 16

 

B7 Bolts Torque Chart
Proof load (Lbs) Bolt Sizes Threads Per Inch< Clamp load (Lbs) torqueTightening (Ft Lbs)
Galv Galv+Waxed Plain
3,350 1/4 20 2,513 13 5 10
5,500 5/16 18 4,125 27 11 21
8,150 3/8 16 6,113 48 19 38
11,150 7/16 14 8,363 76 30 61
14,900 1/2 13 11,175 116 47 93
19,100 9/16 12 14,325 168 67 134
23,750 5/8 11 17,813 232 93 186
35,050 3/4 10 26,288 411 164 329
48,500 7/8 9 36,375 663 265 530
63,650 1 8 47,738 995 398 796
80,100 11/8 7 60,075 1,408 563 1,126
82,934 11/8 8 62,201 1,458 583 1,166
101,750 11/4 7 76,313 1,987 795 1,590
105,006 11/4 8 78,754 2,051 820 1,641
121,300 13/8 6 90,975 2,606 1,042 2,085
129,492 13/8 8 97,119 2,782 1,113 2,226
147,550 11/2 6 110,663 3,458 1,383 2,767
156,687 11/2 8 117,515 3,672 1,469 2,938
199,500 13/4 5 149,625 5,455 2,182 4,364
218,400 13/4 8 163,800 - - 4,778
262,500 2 41/2 196,875 8,203 3,281 6,563
290,850 2 8 218,138 - - 7,271
341,250 21/4 41/2 255,938 11,997 4,799 9,598
373,801 21/4 8 280,351 - - 10,513
420,000 21/2 4 315,000 16,406 6,563 13,125
466,200 21/2 8 349,650 - - 14,569
468,500 23/4 4 351,263 20,124 8,050 16,100
515,851 23/4 8 386,888 - - 17,732
567,150 3 4 425,363 26,585 10,634 21,268
618,451 3 8 463,838 - - 23,192
674,500 31/4 4 505,875 34,252 13,701 27,402
730,550 31/4 8 547,913 - - 29,679
791,350 31/2 4 593,513 43,277 17,311 34,622
851,201 31/2 8 638,401 - - 37,240
917700 33/4 4 688275 53,771 21,509 43,017
982,300 33/4 8 736,725 - - 46,045
1052600 4 4 789450 65,788 26,315 52,630
1,121,950 4 8 841,463 - - 56,098

 

ASTM A193 B7 Fasteners Recommended Hardware
Specification of Nut Specification Of Washer
ASTM A194 Grade 2HM OR ASTM A194 Grade 2H ASTM F436

 

A reputable exporter of ASTM A193 B7 fasteners is sought after by numerous petrochemical, oil, and gas firms.

 

Dimensions of A193 B7 Stud Bolts
Dimensions of A193 B7 Stud Bolts
Stud bolt sizes Studs length
Nominal pipe size No. of Bolts Bolt Circle dia. OD of Flange Bolt Holes dia. Bolts dia. Ring Joint 0.06 in Raised Face
3/4 4 2 3/4 3 7/8 5/8 1/2 2 1/2
1 1/4 4 3 1/2 4 5/8 5/8 1/2 3 1/4 2 3/4
1/2 4 2 3/8 3 1/2 5/8 1/2 2 1/4
1 1/2 4 3 7/8 5 5/8 1/2 3 1/4 2 3/4
2 4 4 3/4 6 3/4 5/8 3 3/4 3 1/4
1 4 3 1/8 4 1/4 5/8 1/2 3 2 1/2
2 1/2 4 5 1/2 7 3/4 5/8 4 3 1/2
3 1/2 8 7 8 1/2 3/4 5/8 4 3 1/2
4 8 7 1/2 9 3/4 5/8 4 3 1/2
3 4 6 7 1/2 3/4 5/8 4 3 1/2
5 8 8 1/2 10 7/8 3/4 4 1/4 3 3/4
8 8 11 3/4 13 1/2 7/8 3/4 4 3/4 4 1/4
6 8 9 1/2 11 7/8 3/4 4 1/2 4
10 12 14 3/4 16 1 7/8 5 4 1/2
14 12 18 3/4 21 1 1/8 1 5 3/4 5 1/4
12 12 17 19 1 7/8 5 1/4 4 3/4
16 16 21 1/4 23 1/2 1 1/8 1 5 3/4 5 1/4
20 20 25 27 1/2 1 1/4 1 1/8 6 3/4 6 1/4
18 16 22 3/4 25 1 1/4 1 1/8 6 1/4 5 3/4
24 20 29 1/2 32 1 1/4 1 1/4 7 1/4 6 3/4

 

SA 193 Gr b7 Threaded Rod Hardness
Diameter, inch. Hardness,
maximum
over 2-1⁄2 to 4, inclusive 321 HBW or 35 HRC
2-1⁄2 and under 321 HBW or 35 HRC
over 4 to 7, inclusive 321 HBW or 35 HRC

 

Dimensions of ASTM A193 B7m Nuts
Dimensions of ASTM A193 B7m Nuts
Diameter*
(mm)
Nut Size
(mm)
Height
(mm)
Jam Nut Hex Nut Nylock Nut
8 5 2.7 4 5
5 2.5 1.6 2 -
5.5 3 1.8 2.4 4
30 20 10 16 20
4 2 1.2 1.6 -
7 4 2.2 3.2 5
19 12 6 10 12
11 7 3.5 5.5 -
22 14 7 11 14
13 8 4 6.5 8
24 16 8 13 16
10 6 3.2 5 6
17 10 5 8 10
27 18 9 15 18.5

 

Recognize the markets and metals we have been serving for 20 years.
ASTM A193 B7 Stud Bolts
ASTM A193 B7 Stud Bolts
MPH Technical Services, Qatar
Galvanized ASTM A193 B7 Bolts
Galvanized ASTM A193 B7 Bolts
Pioneer Adhesives Inc, Philippines
Heavy Hex High Strength Structural Bolt ASTM A193 B7
Heavy Hex High Strength Structural Bolt ASTM A193 B7
Kian Petrochemical, Iran


A193 B7m Bolts Chemical Composition
Element B7
Manganese 0.75 to 1.00%
Carbon 0.38 to 0.48%
Molybdenum 0.15 to 0.25%
Phosphorus, max 0.035%
Chromium 0.80 to 1.10%
Silicon 0.15 to 0.35%
Sulfur, maximum 0.0040%
Nickel

 

B7 Heavy Hex Bolts Mechanical Properties
Grade Elong, %, min Tensile ksi, min Size Yield, ksi, min HBW RA % min HRC
B7 16 125 Up to 2-1/2 105 321 max 50 35 max
16 115 2-5/8 to 4 95 50
18 100 4-1/8 to 7 75 50

 

ASTM A193 B7 Fasteners Applications
  • Flanges
  • Valves
  • Fittings
  • Pressure vessels
  • Threaded rod