ASTM A193 B7 Bolts

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ASTM A193 B7 Bolts

ASME SA193 Grade B7 Threaded Studs Manufacturer in India

What is ASTM A193 Grade B7 Bolt?

ASTM A193 Grade B7 is the most widely specified stud bolt material in high temperature and high pressure applications. It is the default choice for flanged joints in oil refineries, petrochemical plants, and pressure vessels operating up to 450°C. B7 bolts are made from chromium-molybdenum alloy steel (4140/4142) and must meet specific tensile, yield, and hardness requirements under ASME B16.5 flange specifications. At Fasteners Online, we manufacture ASTM A193 B7 stud bolts with full EN 10204 3.1 material certification, making them acceptable for ONGC, BPCL, and international EPC projects. Available in sizes M12 to M100, custom lengths, and various nut combinations including A194 gr 2H heavy hex nuts.

Table of Content

Fasteners Types

ASTM A193 B7 Bolts Specification

Bolt Size

ASTM A193 B7 Bolt Sizes

M2 to M24

Screw Size

SA 193 B7 Screw Size

3/6″ to 2″

Hex Nuts Size

A193 Grade B7 Nuts Size

M3 – M56 | 3/6″ to 2″

Length

ASME SA 193 B7 fasteners Length

3 mm to 200 mm

Specific Heat

ASTM A193 gr B7 material Specific Heat

0.46 kJ/kg·K

Weldability

SA193 B7 Stud Bolt Melting Point

1425–1510 °C

Washers Size

Standard

ASTM A193

Machine Screws Size

Heat Treatment

Quenched and Tempered

ISO Standard

ISO Standard

ISO 3506-1

Threads

SA193 Gr B7 Threaded Rod Threads

METRIC / UNF / BSF / BSW / UNC

Custom Sizes

Custom Sizes

We are ASTM A193 B7 Bolt Manufacturer in India in Custom sizes and lengths

Standards

ASTM A 193 gr B7 Hex Bolt Standards

DIN 976, 931, 934, 933, 7991, 125 / ASME B18.2.1, B18.3

Manufacturing Technique

Manufacturing Technique

Hot forging / CNC Machined / Cold forging

Surface finish

A193 gr B7 stud bolts Finish

Passivation / HDG / Phosphating

Thread Pitch

SA 193 gr B7 Screws Thread Pitch

Coarse Threads / Fine Threads

Studs Type

A193 B7 Studs Type

Fully or Fine threaded / Tap-End / Double-End

Condition

A193 B7 heavy hex bolt Condition

Threading / Cold Drawn

Origin

Origin

Korean / Russian / European / Indian

Head Types

A193 B7 hex head bolts Head Types

  • Phillips Drive
  • Socket cap head
  • Slotted hex washer
  • Flat
  • Button head
  • Slotted Drive
  • Hex washer head

Drive Style

SA 193 B7 Bolt Drive Style

  • Torx
  • Cross
  • Hex
  • Pan
  • Truss
  • Oval
  • Round

Bolt Size

A193 gr B7 screws Thread Class

  • 3G
  • 5 ONF
  • Class 2A (Medium fit)
  • Class 3A (Tight fit)
  • 4G
  • Class 1A (Loose fit)
  • 2G

Packaging

Packaging

  • Blister Packs
  • Wooden Pallet
  • Wooden Cases
  • Carton Box

Value Added Services

Value Added Services

  • Color Coding
  • Head Shank Drilling
  • Laser Etching
  • Head Painting

Certificate

Certificate

  • 100% Radiography Test
  • Raw Materials Certificate
  • UT and PMI Test
  • EN 10204/3.1B

Why buy SA193 gr B7 bolts from Us?

Extensive Stock Range

Extensive Stock Range

Fastest Delivery

Fastest Delivery

No Minimum Order

No Minimum Order

Custom sizes available

Custom sizes available

Supportive Team

Supportive Team

We are ISO Certified ASTM A193 B7 Bolts Manufacturer in India, We keep ready stock and supply SA 193 B7 Studs in size range of M2 to M24.

Check A193 GR B7 Stud Bolts Price list, Refer Specification & Heat Treatment Process of SA 193 gr b7 material

ASTM A193 B7 Bolts Price list

Product Price in USD
(100 Pcs)		 Price in Dirham
(100 Pcs)		 Price in Euro
(100 Pcs)
M16 x 55mm ASTM A193 B7 Hexagon Bolt : DIN 931 US $6.70 24.61 AED € 5.95
M36 X 300MM ASTM A193 GR.B7 Stud, Double end thread US $6.22 22.85 AED € 5.52
M24 X 170MM A193 GR.B7 Stud Bolt HDG US $4.51 16.57 AED € 4.00

Contact us on [email protected] to get stock list and updated price list of ASTM A193 Grade B7 Bolts. We are Supplier of SA 193 B7 Hex bolts and Studs in Oman, Brazil, UK and Malaysia.

Manufacturing Standard of ASME SA193 B7 Bolts

Product DIN ISO ASME UNI
Imperial Metric
Heavy Hex Bolts DIN 6914 ISO 7411 ASME B18.2.1 ASME B18.2.3.6M UNI 5712

Looking For SA 193 B7 Socket Head Cap Screws for High Pressure Heat Applications? Check Grade B7 Anchor Bolts Material Properties

ASTM A193 grade B7 chemical composition

Carbon

0.37 - 0.49

Silicon

0.15 - 0.35

Manganese

0.65 - 1.10

Phosphorus

0.035 max

Chromium

0.75 - 1.20

Sulfur

0.040 max

Molybdenum

0.15 - 0.25

ASTM A193 grade B7 hex bolt Mechanical Properties

Sizes in Inch Tensile Strength,
min, ksi		 Yield Strength,
min, 0.2% offset,
ksi		 Elongation
in 4D,
min, %		 Hardness,
max
over 4 to 7, inclusive 100 75 18 321 HBW or 35 HRC
over 2-1⁄2 to 4, inclusive 115 95 16
2-1⁄2 and under 125 105 16

ASTM A193 B7 bolts equivalent

  • UNS G41400
  • 42CrMo4
  • SAE 4140
  • SCM440
  • Wr.No / EN 1.7225
Check Temperature range and Modulus of elasticity of Grade B7 Alloy Steel Heavy Hex Bolts and A193 B7 Threaded Rods

ASTM A193 grade B7 modulus of elasticity

Modulus of elasticity 205 GPa

A193 gr B7 temperature range

Temperature range up to 450°C (840°F)

Various Types of ASTM A193 B7 Fasteners

ASTM A193 Grade B7 Bolts

ASTM A193 Grade B7 Bolts

ASME SA193 Grade B7 Threaded Studs

ASME SA193 Grade B7 Threaded Studs

A193 GR B7 Stud Bolts

A193 GR B7 Stud Bolts

SA 193 B7 Socket Head Cap Screws

SA 193 B7 Socket Head Cap Screws

Grade B7 Anchor Bolts

Grade B7 Anchor Bolts

ASTM A193 B7 Hex Bolts

ASTM A193 B7 Hex Bolts

Grade B7 Hex Head Bolt

Grade B7 Hex Head Bolt

ASME SA193 Gr B7 U Bolts

ASME SA193 Gr B7 U Bolts

Allowable Bolt Stress of A193 grade B7 bolts

Temperature Maximum Allowable Stress
-20 to 100°F 25.0 ksi
200°F
300°F
400°F
500°F
600°F
700°F
800°F 21.0 ksi
900°F 12.5 ksi
1000°F 4.5 ksi

ASTM A193 B7 bolt dimensions as per ISO 4014

ASTM A193 B7 bolt dimensions as per ISO 4014
Size k s b (if l > 200 mm) b (if l < 200 mm) b (if l < 125 mm)
M2 1.4 4 - - 10
M3 2 5.5 - - 12
M4 2.8 7 - - 14
M5 3.5 8 - 22 16
M6 4 10 - 24 18
M7 4.8 11 - 26 20
M8 5.3 13 - 28 22
M10 6.4 16 45 32 26
M12 7.5 18 49 36 30
M14 8.8 21 53 40 34
M16 10 24 57 44 38
M18 11.5 27 61 48 42
M20 12.5 30 65 52 46
M22 14 34 69 56 50
M24 15 36 73 60 54
M27 17 41 79 66 60
M30 18.7 46 85 72 66
M33 21 50 91 78 72
M36 22.5 55 97 84 78
M39 25 60 103 90 84
M42 26 65 109 69 90
M45 28 70 115 102 96
M48 30 75 121 108 102
M52 33 80 129 116 -
M56 35 85 137 124 -
M64 40 95 153 140 -
ASTM A193 Grade B7 Washer Supplier in Mumbai, View B7 Steel U Bolt Torque Chart

Torque chart for ASTM A193 grade B7 studs

Nut Size Bolt Diameter Nickel Lube Moly Lube Machine Oil Dry Copper Lube
u=0.110 u=0.085 u=0.160 u=0.400 u=0.100
1-1/4" 3/4" 342 208 448 1118 314
1-7/16" 7/8" 544 330 716 1786 500
1-5/8" 1" 810 490 1066 2664 746
1-13/16" 1-1/8" 1170 702 1544 3888 1076
2" 1-1/4" 1622 966 2150 5440 1492
2-3/16" 1-3/8" 2180 1288 2894 7356 2000
2-3/8" 1-1/2" 2850 1674 3792 9274 2614
2-9/16" 1-5/8" 3668 2142 4890 12520 3364
2-3/4" 1-3/4" 4602 2676 6144 15776 4218
2-15/16" 1-7/8" 5682 3292 7596 19550 5204
3-1/8" 2" 6920 3994 9260 23884 6334
N/A 2-1/8" 8324 4790 11150 28816 7618
3-1/2" 2-1/4" 9906 5686 13282 34382 9068
N/A 2-3/8" 11676 6686 15668 40620 10678
3-7/8" 2-1/2" 13646 7796 18324 47536 12476
4-1/4" 2-3/4" 16488 9382 22170 57692 15066
4-5/8" 3" 21464 13974 28894 75340 19606
5" 3-1/4" 27352 15470 36856 96258 24976
5-3/8" 3-1/2" 34226 19312 46158 120730 31244
5-3/4" 3-3/4" 42168 23742 56906 149032 38482
6-1/8" 4" 48590 27262 65652 172292 44324
6-1/2" 4-1/4" 51248 28802 69206 181440 46758
6-7/8" 4-1/2" 57742 32348 78058 205026 52664

ASTM A193 gr B7 stud bolt weight

Length (mm) Stud Bolt Sizes (Weight in Kilograms)
1.1/2" 1.3/8" 1.1/4" 1.1/8" 1" 7/8" 3/4" 5/8" 9/16" 1/2" 7/16" 3/8"
50 0.441 0.366 0.299 0.238 0.185 0.141 0.103 0.07 0.055 0.044 0.032 0.024
55 0.481 0.399 0.326 0.26 0.202 0.154 0.112 0.076 0.06 0.048 0.035 0.026
60 0.521 0.432 0.353 0.281 0.218 0.166 0.122 0.083 0.065 0.052 0.038 0.028
65 0.561 0.466 0.38 0.303 0.235 0.179 0.131 0.089 0.07 0.056 0.041 0.03
70 0.601 0.499 0.407 0.325 0.252 0.192 0.14 0.095 0.075 0.06 0.044 0.032
75 0.641 0.532 0.434 0.346 0.269 0.205 0.15 0.102 0.08 0.064 0.047 0.034
80 0.681 0.565 0.462 0.368 0.286 0.218 0.159 0.108 0.085 0.068 0.05 0.037
85 0.721 0.599 0.489 0.39 0.302 0.23 0.168 0.114 0.09 0.072 0.053 0.039
90 0.761 0.632 0.516 0.411 0.316 0.243 0.178 0.121 0.095 0.076 0.056 0.041
95 0.801 0.665 0.543 0.433 0.336 0.256 0.187 0.127 0.1 0.081 0.059 0.043
100 0.841 0.698 0.57 0.455 0.353 0.269 0.196 0.133 0.105 0.085 0.061 0.045
105 0.881 0.732 0.597 0.476 0.37 0.282 0.206 0.14 0.11 0.089 0.064 0.047
110 0.921 0.765 0.624 0.498 0.386 0.294 0.215 0.146 0.115 0.093 0.067 0.05
115 0.961 0.798 0.652 0.52 0.403 0.307 0.224 0.152 0.12 0.097 0.07 0.052
120 1.001 0.831 0.679 0.541 0.42 0.32 0.234 0.159 0.125 0.101 0.073 0.054
125 1.041 0.865 0.706 0.563 0.437 0.333 0.243 0.165 0.13 0.105 0.076 0.056
130 1.081 0.898 0.733 0.585 0.454 0.346 0.252 0.171 0.135 0.109 0.079 0.058
135 1.121 0.931 0.76 0.606 0.47 0.358 0.262 0.178 0.14 0.113 0.082 0.06
140 1.161 0.964 0.787 0.628 0.487 0.371 0.271 0.184 0.145 0.117 0.085 0.062
145 1.202 0.998 0.815 0.65 0.504 0.384 0.281 0.191 0.15 0.121 0.088 0.065
150 1.242 1.031 0.842 0.671 0.521 0.397 0.29 0.197 0.155 0.125 0.091 0.067
155 1.282 1.064 0.869 0.693 0.538 0.41 0.299 0.203 0.159 0.129 0.094 0.069
160 1.322 1.097 0.896 0.714 0.554 0.422 0.309 0.21 0.164 0.133 0.097 0.071
165 1.362 1.131 0.923 0.736 0.571 0.435 0.318 0.216 0.169 0.137 0.1 0.073
170 1.402 1.164 0.95 0.758 0.588 0.448 0.327 0.222 0.174 0.141 0.102 0.075

ASTM A193 grade B7 anchor bolts yield strength

Yield strength 105 ksi

Marking of SA 193 grade B7 Nuts

Marking of SA 193 grade B7 Nuts

Recommended Nuts and Washers of Grade B7 Anchor Bolts

Washer Standard Nut Standard
ASTM F436 ASTM A194 Grade 2H OR ASTM A194 Grade 2HM

SA 193 B7 Socket Head Cap Screws Features

  • Good Wear Resistance
  • Cost Effective
  • Excellent Fatigue
  • Corrosion Resistance
  • Exceptional Strength
  • Precision Engineering
  • Good Chemical Resistance
SA 193 B7 Socket Head Cap Screws Features

Industrial Products

Types

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  • Contact us to get a catalogue, client list and certificates
  • We are a manufacturer of hex bolts and nuts with an annual production capacity of 200,000 tonnes in different grades such as Hastelloy, Monel, Inconel, Titanium and Stainless Steel.
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