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ASTM A193 Grade B8 Class 2 Bolts

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  • ASTM A193 Grade B8 Class 2 Bolts

Manufacturer and exporter of SA 193 B8 Class 2 Hex Bolts and Stud Bolt in India

The specification standard for the ASTM A193 B8 Class 2 Bolts  covers threaded fasteners such as bolts and threaded. Grade B8 studs are generally manufactured from AISI 304 grade stainless steel. Type 304 is one of the most common grade of stainless steel used as fasteners in various industries.

ASTM A193 Grade B8 Class 2 belongs to the austenitic class of stainless steel. Generally austenitic grades of stainless steels carbide solution treatment on bars to be threaded or after the heading operation for bolts with forged heads.
Carbide solution treatment or solution annealing, is a process in which fasteners or stainless bars are heated following which the fasteners are quenched with water to assure maximum corrosion resistance. Solution annealing of  B8 Class 2 Bolts can be done between a temperature range of 1,100°C to 1,200°C.

Due to the formation of chromium carbides at acritical temperature range of about 500 to 900 degrees, the carbons are extracted from the structure matrix. Hence, the material  tends to lose its homogeneity, which in turn reduces corrosion resistance because of this precipitate. The precipitate can be dissolved by annealing the ASTM A193 B8 Class 2 at extremely high temperatures.

The SA 193 B8 Class 2 Bolts are strain hardened after the fasteners have been solution annealed in order to achieve increased strength characteristics and reduce the potential for galling . A193 B8 Class 2 Bolts are marked “B8SH” with the grade symbol underlined.

Once the ASTM A193 B8 Cl1 has been processed by solution annealing, the fasteners are force cooled adequately using either forced air or water  to quench them. Thus, the secretion of chromium carbides in the critical range is being prevented.
Due to solution annealing the A193 B8 Class 2 at high temperatures, an oxide layer is being formed on the fasteners. Therefore, it is often customary to either pickle  or bead blast  the fasteners which have been treated using solution annealing.

A193 B8 Material is available in two classes:-

A193 B8 Bolts Class 1 and Class 2. ASTM A193 B8 Class 2 Bolts also referred to as hardened.  The A193 B8 Class 2 Stud material is specified for applications where there is a demand for a stronger metal is required. Some common examples of the A193 B8 Class 2 Stud include non-metal flanges, for example, the FRP flanges, CPVC and PVC flanges, as well as other soft non-metal flanges. Additionally, Class 2 material is known to be more resistant to galling, thus, gaining wide acceptance amongst many industries such as chemical processing and waste water management.

ASTM A193 B8 Class 2 Fasteners

ASTM A193 B8 Class 2 Fasteners

ASTM A193 B8 Class 2 Nuts

ASTM A193 B8 Class 2 Nuts

ASTM A193 B8 Class 2 Bolts

ASTM A193 B8 Class 2 Bolts

ASTM A193 B8 Class 2 Hex Bolts

ASTM A193 B8 Class 2 Hex Bolts

A193 B8 Class 2 Stud

A193 B8 Class 2 Stud

ASTM A193 B8 Class 2 Threaded Rod

ASTM A193 B8 Class 2 Threaded Rod

ASTM A193 B8 Class 2 Heavy Hex Bolts manufacturer in India offer low trade prices, PED approved Csk Allen Bolt supplier in Mumbai

B8 Class 2 Bolts

Table of contents

ASTM A193 Grade B8 Class 2 Bolts Specifications

Confused between ASTM A193 B8 Class 2 vs Class 1 material? Compare both properties and price list, view dimensions in Metric and imperial

ASTM A193 B8 Class 2 Fasteners Sizes
  • Cold Forming B8 Class 2 Bolts: M2-M24
  • Hot Forging B8 Class 2 Bolts: M24-M100, 1-1/2” Dia, up to 1100mm lg
  • CNC Machining B8 Class 2 Bolts for M100 / 4” Dia, up to 1500mm lg
Stainless Steel B8 Class 2 Bolts Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
ASTM A193 B8 Class 2 Hex Bolts Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
ASTM A193 Grade B8 Class 2 Bolts Length 3 mm to 200 mm
Grade B8 Class 2 Bolts & Screws US Threads METRIC, BSW, BSF, Unified national fine (UNF), Unified national extra fine (UNEF), UNJC and UNJF threads, Unified national coarse (UNC), UNK, UNR, Constant-pitch threads
ASTM A193 Grade B8 Class 2 Bolts UTS - Unified Thread Standard UNC, UNF, NPT, UNS, UNEF, NPTF
ASTM A193 B8 Class 2 Bolts Head drive Phillips/Slot, Phillips, Slotted, Six-Lobe, etc
Material Origin ASTM A193 Grade B8 Class 2 Bolts are Western European. Eastern origin possible on request.
Ask for Test Certificates from ASTM A193 Grade B8 Class 2 Bolts manufacturers
  • Stainless Steel B8 Class 2 Bolts Tensile testing to ISO 898-1
  • Manufacturer Test Certificate (MTC) as per EN 10204 / 3.1,
  • Tri-Roll Thread Comparators
  • Hardness testing to ISO 6508-1
  • Suitability for preloading to EN 14399-2
  • Nut proof load testing to ISO 898-2
  • ASTM A193 Grade B8 Class 2 Bolts Charpy Impact testing in accordance with ISO 148-1
  • Suitability test for calibrated preload to EN 14399-10
  • Calibrated gauges and tools
ASTM A193 Grade B8 Class 2 Fasteners types U Bolts, Nuts, Studs, Screws, Anchor Bolt, Hex Coupling Nut, Eye Bolt, Marine Anchors, Hex Set Screw, Anchors, Stud Bolts, Foundation Bolts, Bolts, Allen Cap screw, Hex Head Bolts, Socket Screw, Socket Hexagon Head Screw, T-Head Bolts, Mushroom Head Square Neck Bolts, Studs, Socket Head Cap Screw, Structural Bolts, Wing Screw, Hex Nut, Hex Domed Cap Nuts, Hexagon Nut, Wing Screw, J Bolts, Square Nut, Spring Washers, Machine Screw, Sockets, Pan Head Screw, Cap Screw,
Why Jignesh Steel?
  • An Indian manufacturer, established in Year 2008
  • Wide International network : Western Europe, Eastern Europe, Middle East, Southeast Asia, North America, and South America
  • Best Price in India compared to ASTM A193 Grade B8 Class 2 Bolts manufacturers in China
  • Highly professional and technical team
  • Always final Inspection before shipment
  • Pre-production SA 193 B8 Class 2 Fasteners sample before mass production
  • High precision threads
MOQ 5 pieces
Preferred ASTM A193 B8 Class 2 Nut Bolt Drawing Formats JPEG, PDF, CAD, STP, IGS
Free Samples Yes
Delivery time Regular product is about 7-15 days
Payment Terms T/T, Western Union, Paypal, L/C or Trade Assurance 30% deposit & balance before shipping
Port of Dispatch Mumbai or Kalamboli ports in Maharashtra state of India
Other ASTM A193 Grade B8 Class 2 Bolts manufacturers Omni, APL, Kundan, Deepak Fasteners, Unbrako, Sundaram Precision, Infasco, Caparo, EBY Fastener, SPAX® Screws, GKW Etc.
Grade B8 Class 2 Fasteners Application and Uses Industrial, Wind tower, Railway, Nuclear power, Construction, Electronic, and Automotive industry
ISO - International Organization for Standardization
ASTM A193 B8 Class 2 Nut Bolt Surface Finish & Coating
  • Phosphate
  • Sherardized
  • Xylon
  • Zinc Phosphate
  • Geometry
  • Zinc Electro Plating
  • ZAC
  • Manganese Phosphate
  • Cadmium
  • Nickel plated
  • Plated zinc-nickel
  • Anodizing
  • Teflon
  • Dacroment
  • Black oxide
  • Self-Colour
  • Ptfe Coated ASTM A193 B8 Class 2 Bolts
  • Bright Zinc Plated (BZP)

All Stainless Steel B8 Class 2 Fasteners surface finishes can be supplied including Galvanised, Zinc, Sherardized, Dacromet, Electroless Nickel, Geomet & PTFE.
Manufacturing Standard

Manufacturer of ASTM A193 Grade B8 Class 2 Bolts as per IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN, and all International Standards

  • ANSI B 18.2.4 2M
  • Polish PN
  • European EU
  • ANSI - American National Standards Institute
  • GB/T5783, GB/T5782, GB5783
  • German DIN
  • Indian IS
  • International ISO
  • American SAE
  • Spanish CSN
  • ANSI B 28.2.4 1M
  • British BS
  • Italian UNI
  • American ASME

ASTM A193 B8 Class 2 Hex Bolts Dimensions

Searching for Extra Fine UNEF threads A193 B8 Class 2 Studs? Manufacturer of Threaded Rod, Allen Bolts, Flat Washer, Socket Head Cap Screws and Hex Head Bolt in India

ASTM A193 B8 Class 2 Heavy Hex Bolts Dimensions

 B8 Class 2 Heavy Hex Bolt Diameter  D  F  C  H
 Body Diameter    Width Across Flats   Width Across Corners   Height
 Max  Basic   Max        Min         Max  Min  Basic  Max       Min      
1/2 0.515 7/8 0.875 0.850 1.010 0.969 11/32 0.364 0.302
5/8 0.642 1-1/16 1.062 1.031 1.227 1.175 27/64 0.444 0.378
3/4 0.768 1-1/4 1.250 1.212 1.443 1.383 1/2 0.524 0.455
7/8 0.895 1-7/16 1.438 1.394 1.660 1.589 37/64 0.604 0.531
1 1.022 1-5/8 1.625 1.575 1.876 1.796 43/64 0.700 0.591
1-1/8 1.149 1-13/16 1.812 1.756 2.093 2.002 3/4 0.780 0.658
1-1/4 1.277 2 2.00 1.938 2.309 2.209 27/32 0.876 0.749
1-3/8 1.404 2-3/16 2.188 2.119 2.526 2.416 29/32 0.940 0.810
1-1/2 1.531 2-3/8 2.375 2.300 2.742 2.622 1 1.036 0.902
1-3/4 1.785 2-3/4 2.750 2.662 3.175 3.035 1-5/32 1.196 1.054
2 2.039 3-1/8 3.125 3.025 3.608 3.449 1-11/32 1.388 1.175
2-1/4 2.305 3-1/2 3.500 3.388 4.041 3.862 1-1/2 1.548 1.327
2-1/2 2.559 3-7/8 3.875 3.750 4.474 4.275 1-21/32 1.708 1.479

Stainless Steel B8 Class 2 Hex Nuts Dimensions

Wide range of SA 193 Grade B8 Class 2 Hex Nuts and Flange Bolts at factory price, ask for a free quote and sample now

ASTM A193 Grade B8 Class 2 Metric Nut Dimensions Chart in mm

Stainless Steel B8 Class 2 Hex Nuts Dimensions

ASTM A193 B8 Class 2 Metric Nut Size Thread
Pitch		 s e m
Width
Across
Flats		 Width
Across
Corners		 Height of the
Stainless Steel B8 Class 2 Nut
max. min. min. max. min.
M1.6 0.35 3.20 3.02 3.41 1.30 1.05
M2 0.4 4.00 3.82 4.32 1.60 1.35
M2.5 0.45 5.00 4.82 5.45 2.00 1.75
M3 0.5 5.50 5.32 6.01 2.40 2.15
M3.5* 0.6 6.00 5.82 6.58 2.80 2.55
M4 0.7 7.00 6.78 7.66 3.2 2.9
M5 0.8 8.00 7.78 8.79 4.7 4.4
M6 1 10.00 9.78 11.05 5.2 4.9
M8 1.25 13.00 12.73 14.38 6.80 6.44
M10 1.5 16.00 15.73 17.77 8.40 8.04
M12 1.75 18.00 17.73 20.03 10.80 10.37
M14* 2 21.00 20.67 23.36 12.8 12.1
M16 2 24.00 23.67 26.75 14.8 14.1
M18* 2.5 27.00 26.16 29.56 15.8 15.1
M20 2.5 30.00 29.16 32.95 18.0 16.9
M22* 2.5 34 33 37.29 19.4 18.1
M24 3 36 35 39.55 21.5 20.2
M27* 3 41 40 45.2 23.8 22.5
M30 3.5 46 45 50.85 25.6 24.3
M33* 3.5 50 49 55.37 28.7 27.4
M36 4 55.0 53.8 60.79 31.0 29.4
M39* 4 60.0 58.8 66.44 33.4 31.8
M42 4.5 65.0 63.1 71.3 34.0 32.4
M45* 4.5 70.0 68.1 76.95 36.0 34.4
M48 5 75.0 73.1 82.6 38.0 36.4
M52* 5 80.0 78.1 88.25 42.0 40.4
M56 5.5 85.0 82.8 93.56 45.0 43.4
M60* 5.5 90.0 87.8 99.21 48.0 46.4
M64 6 95.0 92.8 104.86 51.0 49.1

Notes:

  • * Non-preferred threads according to standard.
  • All dimensions are given in mm millimeters.

ASTM A193 Grade B8 Class 2 Flat Washer Dimensions

ISO 7089 ASTM A193 B8 Class 2 Flat Washer dimensions (all units in mm)

ASTM A193 Grade B8 Class 2 Flat Washer Dimensions

For Screw
Nominal Size		 Hole Diameter Outside Diameter (OD) Stainless Steel B8 Class 2 Washer Thickness
M1.6 1.7 4 0.3
M2 2.2 5 0.3
M2.5 2.7 6 0.5
M2.6 2.8 7 0.5
M3 3.2 7 0.5
M3.5 3.7 8 0.5
M4 4.3 9 0.8
M5 5.3 10 1
M6 6.4 12 1.6
M7 7.4 14 1.6
M8 8.4 16 1.6
M10 10.5 20 2
M12 13 24 2.5
M14 15 28 2.5
M16 17 30 3
M18 19 34 3
M20 21 37 3
M22 23 39 3
M24 25 44 4
M27 28 50 4
M30 31 56 4
M33 34 60 5
M36 37 66 5
M39 40 72 6
M42 43 78 7
M45 46 85 7
M48 50 92 8
M52 54 98 8
M56 58 105 9

Grade B8 Class 2 Socket Head Cap Screw Dimensions

American National Standard ANSI/ASME B18.3.1M ASTM A193 B8 Class 2 Socket Head Cap Screws

Grade B8 Class 2 Socket Head Cap Screw Dimensions

Stainless Steel B8 Class 2 Screw Nom. Size Thread Pitch Body
Diameter
D		 Head
Diameter
A		 Head
Height
H		 Chamfer
or
Radius
S		 Hexagon
Socket
Size
J		 Spline
Socket
Sizea
M		 Key
Engagement
T		 Transition
Dia.
B
Max Min Max Min Max Min Max Nom. Nom. Min Max
M1.6 × 0.35 1.60 1.46 3.00 2.87 1.60 1.52 0.16 1.5 1.829 0.80 2.0
M2 × 0.4 2.00 1.86 3.80 3.65 2.00 1.91 0.20 1.5 1.829 1.00 2.6
M2.5 × 0.45 2.50 2.36 4.50 4.33 2.50 2.40 0.25 2.0 2.438 1.25 3.1
M3 × 0.5 3.00 2.86 5.50 5.32 3.00 2.89 0.30 2.5 2.819 1.50 3.6
M4 × 0.7 4.00 3.82 7.00 6.80 4.00 3.88 0.40 3.0 3.378 2.00 4.7
M5 × 0.8 5.00 4.82 8.50 8.27 5.00 4.86 0.50 4.0 4.648 2.50 5.7
M6 × 1 6.00 5.82 10.00 9.74 6.00 5.85 0.60 5.0 5.486 3.00 6.8
M8 × 1.25 8.00 7.78 13.00 12.70 8.00 7.83 0.80 6.0 7.391 4.00 9.2
M10 × 1.5 10.00 9.78 16.00 15.67 10.00 9.81 1.00 8.0 … 5.00 11.2
M12 × 1.75 12.00 11.73 18.00 17.63 12.00 11.79 1.20 10.0 … 6.00 14.2
M14 × 2b 14.00 13.73 21.00 20.60 14.00 13.77 1.40 12.0 … 7.00 16.2
M16 × 2 16.00 15.73 24.00 23.58 16.00 15.76 1.60 14.0 … 8.00 18.2
M20 × 2.5 20.00 19.67 30.00 29.53 20.00 19.73 2.00 17.0 … 10.00 22.4
M24 × 3 24.00 23.67 36.00 35.48 24.00 23.70 2.40 19.0 … 12.00 26.4
M30 × 3.5 30.00 29.67 45.00 44.42 30.00 29.67 3.00 22.0 … 15.00 33.4
M36 × 4 36.00 35.61 54.00 53.37 36.00 35.64 3.60 27.0 … 18.00 39.4
M42 × 4.5 42.00 41.61 63.00 62.31 42.00 41.61 4.20 32.0 … 21.00 45.6
M48 × 5 48.00 47.61 72.00 71.27 48.00 47.58 4.80 36.0 … 24.00 52.6

Types of B8 Class 2 Bolts

ASTM A193 B8 Class 2 Flange Bolts

ASTM A193 B8 Class 2 Flange Bolts

Grade B8 Class 2 Heavy Hex Bolts

Grade B8 Class 2 Heavy Hex Bolts

SA 193 B8 Class 2 U Bolts

SA 193 B8 Class 2 U Bolts

A193 B8 Class 2 Stainless Steel Eye Bolts

A193 B8 Class 2 Stainless Steel Eye Bolts

Stainless Steel B8 Class 2 Hex Bolts

Stainless Steel B8 Class 2 Hex Bolts

Grade B8 Class 2 Anchor Bolts

Grade B8 Class 2 Anchor Bolts

Stainless Steel B8 Class 2 Hex Head Bolts

Stainless Steel B8 Class 2 Hex Head Bolts

ASTM A193 Grade B8 Class 2 Carriage Bolts

ASTM A193 Grade B8 Class 2 Carriage Bolts

SA 193 B8 Class 2 Allen Cap Bolt

SA 193 B8 Class 2 Allen Cap Bolt

A193 B8 Class 2 Stainless Steel Countersunk Bolts

A193 B8 Class 2 Stainless Steel Countersunk Bolts

Different types of ASTM A193 B8 Class 2 Stud Bolt

ASTM A193 B8 Class 2 Stud Bolts

ASTM A193 B8 Class 2 Stud Bolts

ASTM A193 B8 Class 2 Lag Bolts

ASTM A193 B8 Class 2 Lag Bolts

Grade B8 Class 2 Double Ended Studs

Grade B8 Class 2 Double Ended Studs

Stainless Steel B8 Class 2 Tie Rod

Stainless Steel B8 Class 2 Tie Rod

ASTM A193 Grade B8 Class 2 Fully Threaded Studs

ASTM A193 Grade B8 Class 2 Fully Threaded Studs

SA 193 B8 Class 2 Threaded Rod

SA 193 B8 Class 2 Threaded Rod

A193 B8 Class 2 Stainless Steel Unc Stud Bolt

A193 B8 Class 2 Stainless Steel Unc Stud Bolt

ASTM A193 B8 Class 2 Fasteners Application

  • Large size ASTM A193 B8 Class 2 Bolts for Oil & Gas Industries
  • High quality ASTM A193 B8 Class 2 Petrochemical Fasteners
  • Defence Industry
  • Sea Water Equipment
  • Offshore & Chemical Industry
  • Heavy duty ASTM A193 B8 Class 2 Fasteners for Heat Exchangers
  • Electrical & Agriculture Industry
  • Engineering & Aerospace Industry
  • ASTM A193 B8 Class 2 Stud Bolt for Construction
  • Metric ASTM A193 B8 Class 2 Hex Bolts for Power Generation
  • High Strength ASTM A193 B8 Class 2 Bolts and Nuts for Automotive industry
  • Nuclear Energy Sector
  • ASTM A193 B8 Class 2 Nut Bolt suitable for Off-Shore Oil Drilling

B8 Class 2 Bolts Testing Tool & Equipment

  • Micrometer for accurate measurement of ASTM A193 Grade B8 Class 2 Bolts
  • Coordinate Measuring Machine
  • Thread gauge and Smooth plug gauge used to check ASTM A193 B8 Class 2 Screws and Nuts quickly
  • Image measuring instrument
  • Roughness tester used to test the surface finish of a ASTM A193 B8 Class 2 Bolts and Nuts
  • Routine inspection of calipers

Stainless Steel B8 Class 2 Nuts Sizes

Grade B8 Class 2 UNC Heavy Hex Nuts sizes as per ANSI/ASME B18.2.2

Stainless Steel B8 Class 2 Nuts Sizes

UNC ASTM A193 B8 Class 2 Heavy hex nut dimensions
Nut N/B Maximum Across Corners Min Across Corners Maximum Thickness Min Thickness Maximum Across Flats Maximum Across Flats
3/8 20.2 19.4 9.6 8.7 17.5 17
7/16 22 21.1 11.2 10.2 19 18.5
1/2 25.6 24.6 12.8 11.8 22.2 21.6
9/16 27.5 26.3 14.4 13.4 23.8 23.1
5/8 31.2 29.8 16 14.9 27 26.2
3/4 36.7 35.1 19.3 18 31.8 30.8
7/8 42.2 40.4 22.5 21.2 36.5 35.4
1 47.7 45.6 25.7 24.3 41.3 40
1 1/8 53.2 50.8 28.9 27.4 46 44.6
1 1/4 58.6 56.1 31.8 30.1 50.8 49.2
1 3/8 64.2 61.4 35 33.3 55.6 53.8
1 1/2 69.6 66.6 38.2 36.4 60.3 58.4
1 5/8 75.2 71.8 41.5 39.5 65.1 63
1 3/4 80.6 77.1 44.7 42.6 69.9 67.6
1 7/8 86.2 82.3 47.9 45.8 74.6 72.2
2 91.6 87.6 51.1 48.9 79.4 76.8
2 1/4 102.6 98.1 57.2 54.7 88.9 86.1
2 1/2 113.6 108.6 63.6 61 98.4 95.2
2 3/4 124.6 119.1 70.1 67.2 108 104.4
3 135.6 129.6 76.5 73.5 117.5 113.7

 

ASTM A193 Grade B8 Class 2 Screws Sizes

BS 2470 Grade B8 Class 2 Hexagon Socket Head Screw (1936 SERIES) G

ASTM A193 Grade B8 Class 2 Hexagon Socket Head Screw Sizes

ASTM A193 B8 Class 2 Screw Size and Thread Dia
D		 Thread Pitch Length of Thread
B 		Head diameter
dk		 Diameter of unthreaded shank
dw		 Head Thickness
k		 Width across flats
s		 Radius under head
r		 Hex socket depth
t		 Wall thickness
w
  UNC UNF min max. min. max. min. max. min. nom. max. min. min. min.
0 - 8000% 0.5 0.096 0.093 0.6 0.0568 0.06 0.057 0.05 0.007 0.003 0.025 0.019
1 64 7200% 0.625 0.118 0.114 0.073 0.0695 0.073 0.07 0.05 0.007 0.003 0.031 0.023
2 56 6400% 0.625 0.14 0.136 0.086 0.0822 0.086 0.083 1/161/16 0.008 0.004 0.038 0.028
3 48 5600% 0.625 0.161 0.157 0.099 0.0949 0.099 0.095 5/645/64 0.008 0.004 0.044 0.032
4 40 4800% 0.75 0.183 0.178 0.112 0.1075 0.112 0.108 5/645/64 0.009 0.005 0.051 0.036
5 40 4400% 0.75 0.205 0.2 0.125 0.1202 0.125 0.121 3/323/32 0.01 0.006 0.057 0.04
6 32 4000% 0.75 0.226 0.221 0.138 0.1329 0.138 0.134 3/323/32 0.01 0.006 0.064 0.044
8 32 3600% 0.875 0.27 0.265 0.164 0.1585 0.164 0.159 1/81/8 0.012 0.007 0.077 0.052
10 24 3200% 0.875 5/165/16 0.306 0.19 0.184 0.19 0.185 5/325/32 0.014 0.009 0.09 0.061
12 24 2800% 0.875 0.343 0.332 0.216 0.21 0.216 0.201 5/325/32 0.014 0.009 0.11 0.074
1/41/4 20 2800% 1 3/83/8 0.367 0.25 0.2435 1/41/4 0.233 3/163/16 0.014 0.009 0.12 0.08
5/165/16 18 2400% 1.125 7/167/16 0.429 0.3125 0.3053 5/165/16 0.306 7/327/32 0.017 0.012 0.151 0.1
3/83/8 16 2400% 1.25 9/169/16 0.553 0.375 0.3678 3/83/8 0.368 5/165/16 0.02 0.015 0.182 0.12
7/167/16 14 2000% 1.375 5/85/8 0.615 0.4375 0.4294 7/167/16 0.43 5/165/16 0.023 0.018 0.213 0.14
43467 13 2000% 1.5 43528 0.739 0.5 0.4919 43467 0.492 43532 0.026 0.02 0.245 0.16
43724 12 1800% 1.625 0.812 0.795 0.5625 0.554 0.562 0.553 43532 0.03 0.022 0.276 0.18
43593 11 1800% 1.75 43654 0.863 0.625 0.6163 43593 0.616 43467 0.032 0.024 0.307 0.2
43528 10 1600% 2 1 0.987 0.75 0.7406 43528 0.74 43724 0.039 0.03 0.37 0.24
43654 9 1400% 2.25 1.1/8 1.111 0.875 0.8647 43654 0.864 43724 0.044 0.034 0.432 0.28
1 8 14/12 2.5 1.5/16 1.297 1 0.98861 1 0.988 43593 0.05 0.04 0.495 0.32
1.1/8 7 1200%   1.5   1.125 1.1086 1.125 1.111 43528     0.557 0.428
1.1/4 7 1200%   1.75   1.25 1.2336 1.25 1.236 43528     0.62 0.475
1.3/8 6 1200%   1.875   1.375 1.3568 1.375 1.36 43528     0.682 0.523
1.1/2 6 1200.00%   2   1.5 1.4818 1.5 1.485 1     0.745 0.57
1.3/4 5 -   2.5   1.75 1.7295 1.75 1.734 1.1/4     0.87 0.665
2 4.1/2 -   2.75   2 1.978 2 1.983 1.3/8     0.995 0.76

Grade B8 Class 2 Washer Sizes

ASTM A193 B8 Class 2 USS Flat Washers
Size ID OD Thickness
3/16 1/4" 9/16" 3/64"
1/4 5/16" 3/4" 1/16"
5/16 3/8" 7/8" 5/64"
3/8 7/16" 1" 5/64"
7/16 1/2" 1-1/4" 5/64"
1/2 9/16" 1-3/8" 7/64"
9/16 5/8" 1-1/2" 7/64"
5/8 11/16" 1-3/4" 9/64"
3/4 13/16" 2" 5/32"
7/8 15/16" 2-1/4" 1/64"
1 1-1/16" 2-1/2" 11/64"
1-1/8 1-1/4" 2-3/4" 11/64"
1-1/4 1-3/8" 3" 11/64"
1-3/8 1-1/2" 3-1/4" 3/16"
1-1/2 1-5/8" 3-1/2" 3/16"
1-5/8 1-3/4" 3-3/4" 3/16"
1-3/4 1-7/8" 4" 3/16"
2 2-1/8" 4-1/2" 3/16"
2-1/2 2-5/8" 4-1/2" 3/16"
3 3-1/8" 5-1/2" 9/32"

ASTM A193 B8 Class 2 Bolt Torque Chart

BOLT
DIA		 B8 Class 2 Bolts and Stud Torque FT-LBS
30% Initial
Torque		 70%
Torque		 100% Final
Torque
1/2 16 36 52
9/16 23 53 75
5/8 31 73 104
3/4 55 129 184
7/8 71 166 237
1 107 249 356
1.1/8 127 297 424
1¼ 179 417 596
1.3/8 186 435 622
1½ 246 574 821
1.9/16 168 392 560
1.5/8 191 445 636
1¾ 240 561 801
1.7/8 298 696 994
2 366 853 1219
2¼ 529 1234 1762
2½ 733 1709 2442
2¾ 986 2300 3285
3 1289 3008 4297

BOLT
DIA		 B8 Class 2 Stud Bolt Torque Nm
30% Initial
Torque		 70%
Torque		 100% Final
Torque
1/2 22 49 71
9/16 31 72 102
5/8 42 99 141
3/4 75 175 249
7/8 96 225 321
1 145 338 483
1.1/8 172 403 575
1¼ 243 565 808
1.3/8 252 590 843
1½ 334 778 1113
1.9/16 228 531 759
1.5/8 259 603 862
1¾ 325 761 1086
1.7/8 404 944 1348
2 496 1157 1653
2¼ 717 1673 2389
2½ 994 2317 3311
2¾ 1337 3118 4454
3 1748 4078 5826

SA 193 B8 Class 2 Bolts Sizes

ASME B18.2.1 A193 B8 Class 2 Stainless Steel Hex Bolt size (Inch Series)

Size in Inch ASTM A193 B8 Class 2 Hex Bolt
Diameter [in]		 Stainless Steel B8 Class 2 Bolt Width Across Flats ASTM A193 Grade B8 Class 2 Bolt Head Height
Nominal [in] Min. [in] Nominal [in] Min. [in]
1/4" 0.2500 7/16"(0.438) 0.425 11/64" 0.150
5/16" 0.3125 1/2"(0.500) 0.484 7/32" 0.195
3/8" 0.3750 9/16"(0.562) 0.544 1/4" 0.226
7/16" 0.4375 5/8"(0.625) 0.603 19/64" 0.272
1/2" 0.5000 3/4"(0.750) 0.725 11/32" 0.302
5/8" 0.6250 15/16"(0.938) 0.906 27/64" 0.378
3/4" 0.7500 1-1/8"(1.125) 1.088 1/2" 0.455
7/8" 0.8750 1-5/16"(1.312) 1.269 37/64" 0.531
1" 1.0000 1-1/2"(1.500) 1.450 43/64" 0.591
1-1/8" 1.1250 1-11/16"(1.688) 1.631 3/4" 0.658
1-1/4" 1.2500 1-7/8"(1.875) 1.812 27/32" 0.749
1-3/8" 1.3750 2-1/16"(2.062) 1.994 29/32" 0.810
1-1/2" 1.5000 2-1/4"(2.250) 2.175 1" 0.902
1-5/8" 1.6250 2-7/16"(2.438) 2.356 1-3/32" 0.978
1-3/4" 1.7500 2-5/8"(2.625) 2.538 1-5/32" 1.054
1-7/8" 1.8750 2-13/16"(2.812) 2.719 1-1/4" 1.130
2" 2.0000 3"(3.000) 2.900 1-11/32" 1.175

ASTM A193 Grade B8 Class 2 Fasteners Equivalent Grade

ASTM Class Material UNS EN
A193 Grade B8 Bolts Class 2 Bolts SS 304 Hex Bolt UNS S30400 EN 1.4301

Chemical Composition of ASTM A193 B8 Class 2 Hex Bolts

Element B8 Class 2 Bolts
Carbon (C) 0 - 0.15%
Manganese (MG) 0 - 1.00%
Phosphorus, max (PH) 0 - 0.040%
Sulfur, max 0 - 0.03%
Silicon (S) 0 - 1.00%
Chromium 11.5 - 13.5%
Nickel -
Molybdenum -

Mechanical Properties of Stainless Steel B8 Class 2 Nut Bolt

Grade Size Tensile Stress ksi, min Yield Stress, ksi, min Elong, %, min RA % min HBW HRC
B8 Class 1 Bolts All 75 30 30 50 223 max 96 max
B8 Class 2 Bolts Up to 3/4 125 100 12 35 321 max 35 max
7/8 - 1 115 80 15 35
1-1/8 - 1-1/4 105 65 20 35
1-3/8 - 1-1/2 100 50 28 45

B8 Class 2 Bolts Price List

Products FOB Price US $
ASTM A193 B8 Class 2 Stainless Steel Hex Bolt US $ 0.001-US$ 0.05 / Piece
ANSI A193 B8 Class 2 Stainless Steel Heavy Hex Bolt US $ 0.005-US$ 0.10 / Piece
Stainless Steel ASTM A193 B8 Class 2 stud bolt (SS316) US $ 0.005-US$ 0.10 / Piece
a193 B8 Class 2 stud anti-theft bolt and nut US $ 0.01-US$ 0.10 / Piece
ASTM A193 B8 Class 2 Hex Bolt/ B8 Class 2M bolts US $ 0.012-US$ 0.05 / Piece
ASTM A193 Grade B8 Class 2 Heavy Hex Structural Bolt US $ 0.003-US$ 0.20 / Piece
B8 Class 2 stainless steel stud bolt astm a193 US $ 0.01 / Piece
Standard A193 B8 Class 2 stud bolt and nut US $ 0.005-US$ 0.10 / Piece

Call us or send us an email to sales@jigneshsteel.com for more details. Always compare our price with other ASTM A193 Grade B8 Class 2 Bolts manufacturers in India or China

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