• +(91) 022-6659 5844
  • sales@jigneshsteel.com

A320 B8m Class 2 Stud Bolts and Nuts manufacturer in India

ASTM A320 B8m is similar to ASTM A320 B8 but instead it is manufactured from stainless steel 316 as opposed to stainless steel 304. Although type 316 stainless is more expensive but it offers superior corrosion resistance compared to 304 stainless steels. A320 B8m Class 2 fasteners require an additional strain hardening operation. ASTM A320 B8m Class 2 does not require an impact test. ASTM A320 B8m exhibits improved chloride corrosion resistance due to the addition of molybdenum. It offers acceptable corrosion resistance to marine atmosphere when pitting corrosion is concern. It provides good chemical resistance to most agents used in the petrochemical, food, dairy and paper industries.  It is widely used for an application which requires corrosion resistance or good elevated temperature strength. ASTM A320 B8m Class 2 exhibits excellent ductility and it can be easily roll formed, deep drawn and bent, in the annealed condition.  Annealing is important to restore ductility and to lower hardness for subsequent forming operations.

ASTM A320 Grade B8m Bolts

ASTM A320 Grade B8m Bolts

ASTM A320 B8m Fasteners

ASTM A320 B8m Fasteners

A320 B8m Nuts

A320 B8m Nuts

A320 B8m Hex Bolts

A320 B8m Hex Bolts

ASTM A320 Grade B8m Stud Bolts

ASTM A320 Grade B8m Stud Bolts

ASTM A320 Grade B8m Threaded Rod

ASTM A320 Grade B8m Threaded Rod

Looking for ISO metric A320 B8m Class 2 Hex Bolts manufacturers in India? Providing largest range of ASTM A320 B8m Threaded Rod, Studs, Screws, Washer and Hex Nuts in Mumbai

ASTM A320 Grade B8m Bolts Specifications

A320 B8m Class 2 Bolts Metric Size range
  • Dia: M10 - M110
  • Length: 12 - 1200MM
ASTM A320 Grade B8m Hex Bolts Size Inch / Imperial
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
Standard

Manufacturer of ASTM A320 Grade B8m Bolts as per JIS, GB, IS, CSN, ANSI, ASTM, DIN, ASME, IFI, ISO, PN, UNI, BS, EU, and all International Standards

  • German DIN
  • ANSI B 18.2.4 2M
  • Indian IS
  • ANSI B 28.2.4 1M
  • Spanish CSN
  • GB/T5783, GB/T5782, GB5783
  • American ASME
  • European EU
  • International ISO
  • American SAE
  • Italian UNI
  • Polish PN
  • British BS
  • ANSI - American National Standards Institute
ASTM A320 Grade B8m Bolts Length 3 mm to 200 mm
AISI 316 Stainless Steel A320 B8m Bolts & Screws US Threads Unified national extra fine (UNEF), METRIC, Unified national coarse (UNC), Unified national fine (UNF), BSW, UNJC, UNJF, UNK, BSF, UNR, Constant-pitch threads
ASTM A320 Grade B8m Bolts Head drive Phillips/Slot, Phillips, Slotted, Six-Lobe, etc
Material Origin ASTM A320 Grade B8m Bolts are Western European. Eastern origin possible on request.
ASTM A320 B8m Class 2 Fasteners types Screws, Bolts, Sockets, Wing Screw, J Bolts, Nut, Spring Washers, Hexagon Nut, Square Nut, Foundation Bolts, Cap Screw, Socket Screw, Socket Head Cap Screw, Machine Screw, Nuts, Anchor Bolt, Hex Coupling Nut, Eye Bolt, Hex Nut, Socket Hexagon Head Screw, Studs, Hex Domed Cap Nuts, Studs, Pan Head Screw, Structural Bolts, Stud Bolts, Screw, U Bolts, Allen Cap screw, T-Head Bolts, Washers, Anchors, Hex Head Bolts, Mushroom Head Square Neck Bolts, Wing Screw, Hex Set Screw, Marine Anchors
ASTM A320 Grade B8m Bolts UTS - Unified Thread Standard UNC, UNS, UNEF, NPT, UNF, NPTF
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 A320 Grade B8m Bolts manufacturers in China
  • Highly professional and technical team
  • Always final Inspection before shipment
  • Pre-production ASTM A320 B8m Fasteners sample before mass production
  • High precision threads
MOQ 5 pieces
Preferred SS ASTM A320 Grade B8m Nut Bolt Drawing Formats JPEG, PDF, CAD, STP, IGS
ASTM A320 Grade B8m Nut Bolt Surface Finish & Coating Sherardized, Hot Dip Galvanised (HDG), Zinc, Self-Colour, Bright Zinc Plated (BZP), Geometry, Plated zinc-nickel, Nickel plated, Anodizing, black oxide, Dacroment, Stainless Steel Passivated
Ask for Test Certificates from ASTM A320 Grade B8m Bolts manufacturers
  • Manufacturer Test Certificate (MTC) as per EN 10204 / 3.1,
  • A320 B8m Class 2 Bolts Tensile testing to ISO 898-1
  • Hardness testing to ISO 6508-1
  • Suitability for preloading to EN 14399-2
  • Tri-Roll Thread Comparators
  • ASTM A320 B8m Class 2 Bolts Charpy Impact testing in accordance with ISO 148-1
  • Suitability test for calibrated preload to EN 14399-10
  • Nut proof load testing to ISO 898-2
  • Calibrated gauges and tools
Free Samples Yes
Delivery time Regular product is about 7-15 days
Port of Dispatch Mumbai or Kalamboli ports in Maharashtra state of India
Find our dealers & distributors of ASTM A320 Grade B8m Bolts Gurgaon, Dhaka, Ludhiana, Dammam, Kochi, Santiago, Brisbane, Riyadh, Jaipur, Hyderabad, Muscat, Thane, Bhubaneswar, Seoul, Vadodara, Kuwait, Caracas, Mysuru, Indore, Patna, Navi Mumbai, Jakarta, Janeiro, Gujarat, Mexico, Howrah, Singapore, Courbevoie, Baroda, India, Lagos, Thiruvananthapuram, Agra, Bogota, Panipat, Ahmedabad, Ernakulam, Karachi, Port-of-Spain, Calgary, Gimhae-si, Ankara, Kuala Lumpur, Tehran, Coimbatore, Dubai, Perth, Tau, Chennai, Montreal, Nashik, Vung Granada, Pune, Mumbai, Bengaluru, Vapi, Rajkot, Ahvaz, Khobar, Bangalore, Melbourne, Doha, Pimpri-Chinchwad, Sydney, Surat, London, Sharjah, Ranchi, Kanpur, Manama, Lucknow, Abu Dhabi, Houston, Shah Alam, Kolkata, Istanbul, Jamshedpur, New Delhi, Nagpur, Noida
AISI 316 Stainless Steel A320 B8m Fasteners Application and Uses Construction, Industrial, Wind tower, Railway, Nuclear power, Electronic, and Automotive industry
Payment Terms T/T, Western Union, Paypal, L/C or Trade Assurance 30% deposit & balance before shipping
ISO - International Organization for Standardization

SS ASTM A320 Grade B8m Hex Bolts Dimensions

SS ASTM A320 Grade B8m Heavy Hex Bolts Dimensions

 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

A320 B8m Class 2 Hex Nuts Dimensions

ASTM A320 B8m Class 2 Metric Nut Dimensions Chart in mm

A320 B8m Class 2 Hex Nuts Dimensions

SS ASTM A320 Grade B8m Metric Nut Size Thread
Pitch
s e m
Width
Across
Flats
Width
Across
Corners
Height of the
A320 B8m 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 A320 B8m Class 2 Flat Washer Dimensions

ISO 7089 SS ASTM A320 Grade B8m Flat Washer dimensions (all units in mm)

ASTM A320 B8m Class 2 Flat Washer Dimensions

For Screw
Nominal Size
Hole Diameter Outside Diameter (OD) A320 B8m 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

AISI 316 Stainless Steel A320 B8m Socket Head Cap Screw Dimensions

American National Standard ANSI/ASME B18.3.1M SS ASTM A320 Grade B8m Socket Head Cap Screws

AISI 316 Stainless Steel A320 B8m Socket Head Cap Screw Dimensions

A320 B8m 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

ASTM A320 Grade B8m Bolts Type

SS ASTM A320 Grade B8m Flange Bolts

SS ASTM A320 Grade B8m Flange Bolts

ASTM A320 B8m Class 2 Square Bolts

ASTM A320 B8m Class 2 Square Bolts

AISI 316 Stainless Steel A320 B8m Heavy Hex Bolts

AISI 316 Stainless Steel A320 B8m Heavy Hex Bolts

A320 B8m Class 2 Hex Bolts

A320 B8m Class 2 Hex Bolts

ASTM A320 B8m U Bolts

ASTM A320 B8m U Bolts

SA320 B8m SS 316 Eye Bolts

SA320 B8m SS 316 Eye Bolts

AISI 316 Stainless Steel A320 B8m Anchor Bolts

AISI 316 Stainless Steel A320 B8m Anchor Bolts

ASTM A320 B8m Class 2 Carriage Bolts

ASTM A320 B8m Class 2 Carriage Bolts

SS ASTM A320 Grade B8m Lag Bolts

SS ASTM A320 Grade B8m Lag Bolts

ASTM A320 B8m Allen Cap Bolt

ASTM A320 B8m Allen Cap Bolt

A320 B8m Class 2 Hex Head Bolts

A320 B8m Class 2 Hex Head Bolts

SA320 B8m SS 316 Countersunk Bolts

SA320 B8m SS 316 Countersunk Bolts

A320 Grade B8m Nuts Types

ASTM A320 B8m Lock Nuts

ASTM A320 B8m Lock Nuts

SA320 B8m SS 316 Panel Nuts

SA320 B8m SS 316 Panel Nuts

ASTM A320 B8m Class 2 T-Nuts For Wood

ASTM A320 B8m Class 2 T-Nuts For Wood

A320 B8m Class 2 Square Nuts

A320 B8m Class 2 Square Nuts

ASTM A320 B8m Wing Nuts

ASTM A320 B8m Wing Nuts

AISI 316 Stainless Steel A320 B8m Heavy Hex Nuts

AISI 316 Stainless Steel A320 B8m Heavy Hex Nuts

A320 B8m Class 2 Hex Nuts

A320 B8m Class 2 Hex Nuts

SS ASTM A320 Grade B8m Eye Nuts

SS ASTM A320 Grade B8m Eye Nuts

ASTM A320 B8m Class 2 Jam Nuts

ASTM A320 B8m Class 2 Jam Nuts

AISI 316 Stainless Steel A320 B8m Wheel Nuts and Caps

AISI 316 Stainless Steel A320 B8m Wheel Nuts and Caps

SA320 B8m SS 316 Cage Nuts and Spring Nuts

SA320 B8m SS 316 Cage Nuts and Spring Nuts

Stainless Steel A320 Gr B8m Self Locking Nuts

Stainless Steel A320 Gr B8m Self Locking Nuts

ASTM A320 Grade B8m Stud Bolt Type

SS ASTM A320 Grade B8m Stud Bolts

SS ASTM A320 Grade B8m Stud Bolts

A320 B8m Class 2 Tie Rod

A320 B8m Class 2 Tie Rod

ASTM A320 B8m Threaded Rod

ASTM A320 B8m Threaded Rod

ASTM A320 B8m Class 2 Fully Threaded Studs

ASTM A320 B8m Class 2 Fully Threaded Studs

AISI 316 Stainless Steel A320 B8m Double Ended Studs

AISI 316 Stainless Steel A320 B8m Double Ended Studs

SA320 B8m SS 316 Unc Stud Bolt

SA320 B8m SS 316 Unc Stud Bolt

A320 Grade B8m Screws Types

ASTM A320 Grade B8m Class 2 Tek Screws

ASTM A320 Grade B8m Class 2 Tek Screws

Stainless Steel A320 Gr B8m Deck Screws

Stainless Steel A320 Gr B8m Deck Screws

SS ASTM A320 Grade B8m Socket Head Cap Screw

SS ASTM A320 Grade B8m Socket Head Cap Screw

SS ASTM A320 Grade B8m Eye Screw

SS ASTM A320 Grade B8m Eye Screw

ASTM A320 Grade B8m Class 2 Concrete Screws

ASTM A320 Grade B8m Class 2 Concrete Screws

AISI 316 Stainless Steel A320 B8m Thumb Screw

AISI 316 Stainless Steel A320 B8m Thumb Screw

A320 B8m Class 2 Wood Screw

A320 B8m Class 2 Wood Screw

ASTM A320 B8m Class 2 Coach Screw

ASTM A320 B8m Class 2 Coach Screw

SA320 B8m SS 316 12-Point Flange Head Cap Screws

SA320 B8m SS 316 12-Point Flange Head Cap Screws

A320 B8m Class 2 Wing Screw

A320 B8m Class 2 Wing Screw

AISI 316 Stainless Steel A320 B8m Hex Cap Screw

AISI 316 Stainless Steel A320 B8m Hex Cap Screw

ASTM A320 B8m Allen Cap Screw

ASTM A320 B8m Allen Cap Screw

ASTM A320 B8m Class 2 Captive Panel Screws

ASTM A320 B8m Class 2 Captive Panel Screws

SA320 B8m SS 316 Grub Screw

SA320 B8m SS 316 Grub Screw

Stainless Steel A320 Gr B8m Fully Threaded Screw

Stainless Steel A320 Gr B8m Fully Threaded Screw

Stainless Steel A320 Gr B8m Pan Head Screw

Stainless Steel A320 Gr B8m Pan Head Screw

ASTM A320 Grade B8m Class 2 Truss Head Screw

ASTM A320 Grade B8m Class 2 Truss Head Screw

ASTM A320 Grade B8m Class 2 Torx Screw

ASTM A320 Grade B8m Class 2 Torx Screw

SS ASTM A320 Grade B8m Flat Head Screw

SS ASTM A320 Grade B8m Flat Head Screw

ASTM A320 Grade B8m Washers Types

SS ASTM A320 Grade B8m Cup Washer

SS ASTM A320 Grade B8m Cup Washer

AISI 316 Stainless Steel A320 B8m Square Washer

AISI 316 Stainless Steel A320 B8m Square Washer

A320 B8m Class 2 Lock Washer

A320 B8m Class 2 Lock Washer

ASTM A320 B8m Class 2 Countersunk Washer

ASTM A320 B8m Class 2 Countersunk Washer

ASTM A320 B8m Belleville Washer

ASTM A320 B8m Belleville Washer

SA320 B8m SS 316 Shim Washer

SA320 B8m SS 316 Shim Washer

A320 B8m Class 2 Square Plate Washer

A320 B8m Class 2 Square Plate Washer

ASTM A320 B8m Class 2 Square Washer

ASTM A320 B8m Class 2 Square Washer

AISI 316 Stainless Steel A320 B8m Penny Washer

AISI 316 Stainless Steel A320 B8m Penny Washer

ASTM A320 B8m Machine Washers

ASTM A320 B8m Machine Washers

Polished SA320 B8m SS 316 Washer

Polished SA320 B8m SS 316 Washer

Stainless Steel A320 Gr B8m Ring Washers

Stainless Steel A320 Gr B8m Ring Washers

SA 320 B8m Class 2 Nuts Sizes

AISI 316 Stainless Steel A320 B8m UNC Heavy Hex Nuts sizes as per ANSI/ASME B18.2.2

A320 B8m Class 2 Nuts Sizes

UNC SS ASTM A320 Grade B8m 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 A320 B8m Class 2 Screws Sizes

BS 2470 AISI 316 Stainless Steel A320 B8m Hexagon Socket Head Screw (1936 SERIES) G

ASTM A320 B8m Class 2 Hexagon Socket Head Screw Sizes

SS ASTM A320 Grade B8m 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

AISI 316 Stainless Steel A320 B8m Washer Sizes

SS ASTM A320 Grade B8m 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 A320 B8m Bolts Sizes

ASME B18.2.1 SA320 B8m SS 316 Hex Bolt size (Inch Series)

Size in Inch SS ASTM A320 Grade B8m Hex Bolt
Diameter [in]
A320 B8m Class 2 Bolt Width Across Flats ASTM A320 B8m 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

Chemical Composition of SS ASTM A320 Grade B8m Hex Bolts

Element Alloy A320 B8M (AISI 316) A320 B8 (AISI 304)
Carbon (c) 0.08% max 0.08% max
Manganese 2.00% max 2.00% max
Phosphorus, max 0.045% 0.045%
Sulfur, max 0.030% 0.030%
Silicon 1.00% max 1.00% max
Chromium 16.0 - 18.0% 18.0 - 20.0%
Nickel 10.0 - 14.0% 8.0 - 11.0%
Molybdenum 2.00 - 3.00%

Mechanical Properties of A320 B8m Class 2 Nut Bolt

Grade Size Tensile Strength, ksi min Yield Strength, ksi, min Charpy Impact  Elong, % min RA, %, min
A320 B8M Class 1  all  75  30  N/A  30 50
A320 B8M Class 2  Up to 3/4  110  95  N/A  15  45
7/8 – 1  100  80  N/A  20  45
11/8 – 11/4  95  65  N/A  25  45
 13/8 – 11/2  90  50  N/A

ASTM A320 B8m Class 2 Fasteners Equivalent Grade

ASTM A320 different grades Description
A320 B8M Class 1 AISI 316, SS carbide solution treated
A320 B8M Class 2 AISI 316, SS carbide solution treated, strain hardened

A320 Grade B8m Bolts Price List

Products FOB Price US $
ASTM A320 B8m Class 2 Bolts and Nuts US $0.001-$0.01/ Piece
ASTM A320 Grade B8m Stainless Steel Threaded Rod Stud US $0.05-$0.06/ Piece
Stainless Steel ASTM A320 Grade B8m Hex Bolt US $0.90-$1.10/ Piece
A320 Grade B8m Stud Bolt US $0.01-$1.00/ Piece

Call us or send us an email to sales@jigneshsteel.com for more details. Always compare our price with other ASTM A320 Grade B8m Bolts manufacturers in India or China