image
Any Question +91 92694 49497
Any Question +91 92694 49497
Contact Us

Stainless Steel 321/321H Fasteners

  • Home
  • Products
  • Fasteners

Manufacturer, Exporter & Supplier of
Stainless Steel 321/321H Fasteners

ASTM F593 Stainless Steel 321 Fasteners Suppliers, SS 321H Fasteners, 321H Stainless Steel Fasteners, Stainless Steel S32100 Fastener in Best Price, Austenitic Stainless Steel 321 Fasteners, Stainless Steel S32109 Fastener, 321 Stainless Steel Nuts, SS 321/321H Screws, 321/321H Stainless Steel Bolts, Stainless Steel 321 Stud Bolts, F1554 Stainless Steel S321/321H Fasteners, Stainless Steel 1.4878 Fastener, SS 321 Coupling Nut, ASME SF594 Stainless Steel 321/321H Fasteners Supplier in India.

Honesty Steel & Alloys Ltd. is a trusted Manufacturer, Exporter & Supplier of Stainless Steel 321/321H Fasteners, offering high-quality fasteners for demanding industrial applications. Our Stainless Steel 321 and 321H fasteners are manufactured using stabilized austenitic stainless steel grades containing titanium, providing excellent resistance to intergranular corrosion after exposure to elevated temperatures.

Stainless Steel 321 Fasteners are widely used where good corrosion resistance, high-temperature performance, strength, and durability are required. Grade 321 is stabilized with titanium to minimize chromium carbide precipitation, making it suitable for applications involving continuous or intermittent exposure to elevated temperatures. Stainless Steel 321H Fasteners are the higher-carbon version of Grade 321 and are designed to provide improved high-temperature strength. They are particularly suitable for applications where elevated-temperature mechanical properties are important.

SS 321 Hex Bolts are frequently used in chemical processing, petrochemical, power generation, heat exchanger, furnace and high-temperature piping applications. SS 321H Hex Bolts can be selected where higher carbon content and improved high-temperature strength are required.

Stainless Steel 321/321H Heavy Hex Bolts feature a larger hexagonal head than standard hex bolts and are commonly used for industrial and structural fastening applications requiring higher bearing area and robust installation. Stainless Steel 321/321H Washers are used beneath nuts and bolt heads to distribute the applied load over a larger surface area. They are commonly used with bolts and nuts in industrial assemblies. Stainless Steel 321/321H Stud Bolts are threaded fasteners used extensively for flange connections, pressure equipment, piping systems, heat exchangers and industrial machinery.

Stainless Steel 321 Bolts, 321 Stainless Steel Fasteners Exporter, SS 321H Nuts, Stainless Steel S32109 Fastener, Stainless Steel 321 Washers, SS 321 Stud Bolts, Stainless Steel 321H Industrial Fasteners, SS 321/321H Hex Head Screw Dealer, Buy 321 Stainless Steel Carriage Bolts, SS 321/321H Machine Screw, Stainless Steel S321/321H Screws, SS S321/321H Fasteners, SS S321/321H Anchor Fasteners, Stainless Steel 1.4541 Fastener, Stainless Steel 321 Fasteners Manufacturer in Mumbai.

Stainless Steel 321/321H Fasteners Specifications

Property Specification
Product Stainless Steel 321/321H Fasteners
Material Austenitic Stainless Steel
Grade SS 321 / 321H
UNS S32100 / S32109
Common Designation A2 Stainless Steel
Standards ASTM / ASME, ISO, DIN, BS, EN
Bolt Standards ASME B18.2.1, DIN, ISO, BS
Nut Standards ASME B18.2.2, DIN, ISO, BS
Screw Standards ASME / ISO / DIN / BS
Thread Metric / UNC / UNF / BSW / BSF
Thread Type Coarse / Fine
Surface Plain / Passivated / Polished
Finish Natural / Bright / Customized
Types Nuts, Bolts, Screws, Socket Screw, Sockets, Studs, Screw, Nut, Spring Washers, Hex Set Screw, Socket Hexagon Head Screw, Cap Screw, Wing Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Studs, Anchors, Hex Nut,Marine Anchors, Hexagon Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Anchor Bolt, U- Bolts, J Bolts, T-Head Bolts, Mushroom Head Square Neck Bolts, Eye Bolt, Foundation Bolts, Structural Bolts
Manufacturing Cold Forged / Hot Forged / Machined
Size Metric & Imperial
Supply Condition Annealed / Cold Worked / As Specified
Application Industrial, Construction, Engineering, Fabrication

Equivalent Chart of Stainless Steel 321/321H Fasteners

STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

Chemical Composition of Stainless Steel 321/321H Fasteners

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Properties of Stainless Steel 321/321H Fasteners

Grades Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 321 / 321H 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Types of Stainless Steel 321/321H Fasteners

Stainless Steel 321/321H Carriage Bolts

Stainless Steel 321/321H Eye Bolts

Stainless Steel 321/321H Self Tapping Screws

Stainless Steel 321/321H Anchor Bolt

Stainless Steel 321/321H U Bolts

Stainless Steel 321/321H Machine Screws

Stainless Steel 321/321H Socket Screws

Stainless Steel 321/321H Hex Coupling Nut

Stainless Steel 321/321H Hex Nuts

Stainless Steel 321/321H Lock Nuts

Stainless Steel 321/321H Shoulder Bolts

Stainless Steel 321/321H T Head Bolts

Stainless Steel 321/321H Flat Washers

Stainless Steel 321/321H Lock Washers

Stainless Steel 321/321H Stud Bolts

Stainless Steel 321/321H Flanged Bolts

Ready to Buy Stainless Steel 321/321H Fasteners Products?
Get premium-quality Stainless Steel 321/321H Fasteners at competitive prices. Send us your requirement and get a quick quote today.

Contact Us Contact Us

Manufacturing Standards of Stainless Steel 321/321H Fasteners

Types Size Range Class Standards
Hex Nut M3 to M30 A2 – 70/80, A4 – 70/80 DIN 934 / ISO 4032
Hex Head Screw (Full Thread) M3 to M30 A2 – 70/80, A4 – 70/80 DIN 933 / ISO 4017
Hex Head Bolt (Partial Thread) M4 to M30 A2 – 70/80, A4 – 70/80 DIN 931 / ISO 4014
Threaded Rod M3 to M36 A2 – 70/80, A4 – 70/80 DIN 975
Plain Washer M3 to M64 A2, A4 DIN 125 A
Flat – Section Spring Washer M3 to M36 A2, A4 DIN 127 B
Square – Section Spring Washer M3 to M36 A2, A4 DIN 7980
Socket Head Cap Screw M3 to M30 A2 – 70/80, A4 – 70/80 DIN 912 / ISO 4762

Imperial Size Range of Stainless Steel 321/321H Fasteners

Product Typical Imperial Range
Bolts 1/8" to 4"
Screws 1/8" to 2"
Nuts 1/8" to 4"
Washers 1/8" to 4"
Studs 1/4" to 4"
Threaded Rods 1/4" to 4"

ANSI/ASME Standards (INCH SERIES)

ASME B18.1.1 Small Solid Rivets ASME B18.8.1 Clevis Pins and Cotter Pins
ASME B18.1.2 Large Rivets ASME B18.8.2 Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins
ASME B18.2.1 Square and Hex Bolts and Screws ASME B18.9 Plow Bolts
ASME B18.2.2 Square and Hex Nuts ASME B18.10 Track Bolts and Nuts
ASME B18.2.6 Fasteners for use in Structural Applications ASME B18.11 Miniature Screws
ASME B18.3 Socket Cap, Shoulder and Set Screws ASME B18.13 Screws and Washer Assemblies (Sems)
ASME B18.5 Round Head Bolts ASME B18.15 Forged Eyebolts
ASME B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws ASME B18.17 Wing Nuts, Thumb Screws and Wing Screws
ASME B18.6.3 Machine Screws and Machine Screws Nuts ASME B18.21.1 Lock Washers
ASME B18.6.4 Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws ASME B18.22.1 Plain Washers
ASME B18.7 General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps ASME B18.23.1 Beveled Washers

Stainless Steel 321/321H Bolt Dimensions & Size Chart

Nominal or Basic Product Diameter E F G H J LT (Thread Length) Y
Body Diameter Width Across Flats Width Across Corners Head Height Wrenching Height For Screw Lengths For Screw Lengths Transition Thread Length
1/4 0.25 0.25 0.245 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 0.106 0.750 1.000 0.250
5/16 0.3125 0.3125 0.3065 1/2 0.500 0.489 0.577 0.557 13/64 0.211 0.195 0.140 0.875 1.125 0.278
3/8 0.375 0.375 0.369 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 0.160 1.000 1.250 0.312
7/16 0.4375 0.4375 0.4305 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 0.195 1.125 1.375 0.357
1/2 0.5 0.5 0.493 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 0.215 1.250 1.500 0.385
9/16 0.5625 0.5625 0.5545 13/16 0.812 0.798 0.938 0.910 23/64 0.371 0.348 0.250 1.375 1.625 0.417
5/8 0.625 0.625 0.617 15/16 0.938 0.922 1.083 1.051 25/64 0.403 0.378 0.269 1.500 1.750 0.455
3/4 0.75 0.75 0.741 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 0.324 1.750 2.000 0.500
7/8 0.875 0.875 0.866 1-5/16 1.312 1.285 1.516 1.465 35/64 0.563 0.531 0.378 2.000 2.250 0.556
1 1 1 0.99 1-1/2 1.500 1.469 1.732 1.675 39/64 0.627 0.591 0.416 2.250 2.500 0.625
1-1/8 1.125 1.125 1.114 1-11/16 1.688 1.631 1.949 1.859 11/16 0.718 0.658 0.461 2.500 2.750 0.714
1-1/4 1.25 1.25 1.239 1-7/8 1.875 1.812 2.165 2.066 25/32 0.813 0.749 0.530 2.750 3.000 0.714
1-1/2 1.5 1.5 1.488 2-1/4 2.250 2.175 2.598 2.480 15/16 0.974 0.902 0.640 3.250 3.500 0.833

Stainless Steel 321/321H Nuts Dimension & Size Chart

Nominal Size or Basic Major Thread Diameter F G H
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min
1/4 .2500 1/2 .500 .488 .577 .556 15/64 .250 .218
5/16 .3125 9/16 .562 .546 .650 .622 19/64 .314 .280
3/8 .3750 11/16 .688 .669 .794 .763 23/64 .377 .341
7/16 .4375 3/4 .750 .728 .866 .830 27/64 .441 .403
1/2 .5000 7/8 .875 .850 1.010 .969 31/64 .504 .464
9/16 .5625 15/16 .938 .909 1.083 1.037 35/64 .568 .526
5/8 .6250 1-1/16 1.062 1.031 1.227 1.175 39/64 .631 .587
3/4 .7500 1-1/4 1.250 1.212 1.443 1.382 47/64 .758 .710
7/8 .8750 1-7/16 1.438 1.394 1.660 1.589 55/64 .885 .833
1 1.0000 1-5/8 1.325 1.575 1.876 1.796 63/64 1.012 .956
1-1/8 1.1250 1-13/16 1.812 1.756 2.093 2.002 1-7/64 1.139 1.079
1-1/4 1.2500 2 2.000 1.938 2.309 2.209 1-7/32 1.251 1.187
1-3/8 1.3750 2-3/16 2.188 2.119 2.526 2.416 1-11/32 1.378 1.460
1-1/2 1.5000 2-3/8 2.375 2.300 2.742 2.622 1-15/32 1.505 1.433
1-5/8 1.6250 2-9/16 2.562 2.481 2.959 2.828 1-19/32 1.632 1.556
1-3/4 1.7500 2-3/4 2.750 2.662 3.175 3.035 1-23/32 1.759 1.679
2 2.0000 3-1/8 3.125 3.025 3.608 3.449 1-31/32 2.013 1.925
2-1/4 2.2500 3-1/2 3.500 3.388 4.041 3.862 2-13/64 2.251 2.155
2-1/2 2.5000 3-7/8 3.875 3.750 4.474 4.275 2-29/64 2.505 2.401
2-3/4 2.7500 4-1/4 4.250 4.112 4.907 4.688 2-45/64 2.759 2.647
3 3.0000 4-5/8 4.625 4.475 5.340 5.102 2-61/64 3.013 2.893
3-1/4 3.2500 5 5.000 4.838 5.774 5.515 3-3/16 3.252 3.124
3-1/2 3.5000 5-3/8 5.375 5.200 6.207 5.928 3-7/16 3.506 3.370
3-3/4 3.7500 5-3/4 5.750 5.562 6.640 6.341 3-11/16 3.670 3.616
4 4.0000 6-1/8 6.125 5.925 7.073 6.755 3-15/16 4.014 3.862

Stainless Steel 321/321H Hex Bolts Dimensions & Size Chart

Nominal Size (Inch) Basic Diameter (mm) Full-Size Body Diameter (E) Width Across Flats (F) Width Across Corners (G) Head Height (H) Fillet Radius (R) Nominal Thread Length (LT)
Max Min Basic (inch) Max Min Max Min Basic (inch) Max Min Max Min 6 in. & Shorter Over 6 in.
1/4 0.25 0.26 0.237 7/16 0.438 0.425 0.505 0.484 11/64 0.188 0.15 0.03 0.01 0.75 1.0
5/16 0.3125 0.324 0.298 1/2 0.5 0.484 0.577 0.552 7/32 0.235 0.195 0.03 0.01 0.875 1.125
3/8 0.375 0.388 0.36 9/16 0.562 0.544 0.65 0.62 1/4 0.268 0.226 0.03 0.01 1.0 1.25
7/16 0.4375 0.452 0.421 5/8 0.625 0.603 0.722 0.687 19/64 0.321 0.272 0.03 0.01 1.125 1.375
1/2 0.5 0.515 0.482 3/4 0.75 0.725 0.866 0.826 11/32 0.364 0.302 0.03 0.01 1.25 1.5
5/8 0.625 0.642 0.605 15/16 0.938 0.906 1.083 1.033 27/64 0.444 0.378 0.06 0.02 1.5 1.75
3/4 0.75 0.768 0.729 1 1/8 1.125 1.088 1.299 1.24 1/2 0.524 0.455 0.06 0.02 1.75 2.0
7/8 0.875 0.895 0.852 1 5/16 1.312 1.269 1.516 1.447 37/64 0.604 0.531 0.06 0.02 2.0 2.25
1 1.0 1.022 0.976 1 1/2 1.5 1.45 1.732 1.653 43/64 0.7 0.591 0.09 0.03 2.25 2.5
1 1/8 1.125 1.149 1.098 1 11/16 1.688 1.631 1.949 1.859 3/4 0.78 0.658 0.09 0.03 2.5 2.75
1 1/4 1.25 1.277 1.223 1 7/8 1.875 1.812 2.165 2.066 27/32 0.876 0.749 0.09 0.03 2.75 3.0
1 3/8 1.375 1.404 1.345 2 1/16 2.062 1.994 2.382 2.273 29/32 0.94 0.81 0.09 0.03 3.0 3.25
1 1/2 1.5 1.531 1.47 2 1/4 2.25 2.175 2.598 2.48 1 1.036 0.902 0.09 0.03 3.25 3.5
1 5/8 1.625 1.658 1.591 2 7/16 2.438 2.356 2.815 2.616 1 3/32 1.116 0.978 0.09 0.03 3.5 3.75
1 3/4 1.75 1.785 1.716 2 5/8 2.625 2.538 3.031 2.893 1 5/32 1.196 1.054 0.12 0.04 3.75 4.0
1 7/8 1.875 1.912 1.839 2 13/16 2.812 2.719 3.248 3.099 1 1/4 1.276 1.13 0.12 0.04 4.0 4.25
2 2.0 2.039 1.964 3 3.0 2.9 3.464 3.306 1 11/32 1.388 1.175 0.12 0.04 4.25 4.5
2 1/4 2.25 2.305 2.214 3 3/8 3.375 3.262 3.897 3.719 1 1/2 1.548 1.327 0.19 0.06 4.75 5.0
2 1/2 2.5 2.559 2.461 3 3/4 3.75 3.625 4.33 4.133 1 21/32 1.708 1.479 0.19 0.06 5.25 5.5
2 3/4 2.75 2.827 2.711 4 1/8 4.125 3.988 4.763 4.546 1 13/16 1.869 1.632 0.19 0.06 5.75 6.0
3 3.0 3.081 2.961 4 1/2 4.5 4.35 5.196 4.959 2 2.06 1.815 0.19 0.06 6.25 6.5
3 1/4 3.25 3.335 3.21 4 7/8 4.875 4.712 5.629 5.372 2 3/16 2.251 1.936 0.19 0.06 6.75 7.0
3 1/2 3.5 3.589 3.461 5 1/4 5.25 5.075 6.062 5.786 2 5/16 2.38 2.057 0.19 0.06 7.25 7.5
3 3/4 3.75 3.858 3.726 5 5/8 5.625 5.437 6.495 6.198 2 1/2 2.572 2.241 0.19 0.06 7.75 8.0
4 4.0 4.111 3.975 6 6.0 5.8 6.928 6.612 2 11/16 2.764 2.424 0.19 0.06 8.25 8.5

All dimensions are per ASME B18.2.1 Hex Bolt Standards.

Stainless Steel 321/321H Heavy Hex Nuts & Heavy Hex Jam Nuts Dimensions

Nominal Size (inch) Basic Major Diameter of Thread (inch) Width Across Flats (F) Width Across Corners (G) Thickness of Heavy Hex Nuts (H) Thickness of Heavy Hex Jam Nuts (H1) Max Runout (FIM)
Basic Min Max Min Max Basic Min Max Basic Min Max Up to 150k psi 150k psi & greater All grades
1/4 0.2500 1/2 0.488 0.500 0.556 0.577 15/64 0.218 0.250 11/64 0.156 0.188 0.017 0.011 0.017
5/16 0.3125 9/16 0.546 0.562 0.622 0.650 19/64 0.280 0.314 13/64 0.186 0.220 0.020 0.012 0.020
3/8 0.3750 11/16 0.669 0.688 0.763 0.794 23/64 0.341 0.377 15/64 0.216 0.252 0.021 0.014 0.021
7/16 0.4375 3/4 0.728 0.750 0.830 0.866 27/64 0.403 0.441 17/64 0.247 0.285 0.022 0.015 0.022
1/2 0.5000 7/8 0.850 0.875 0.969 1.010 31/64 0.464 0.504 19/64 0.277 0.321 0.023 0.016 0.023
9/16 0.5625 15/16 0.909 0.938 1.037 1.083 35/64 0.526 0.568 21/64 0.307 0.349 0.024 0.017 0.024
5/8 0.6250 1 1/16 1.031 1.062 1.175 1.227 39/64 0.587 0.631 23/64 0.337 0.381 0.025 0.018 0.025
3/4 0.7500 1 1/4 1.212 1.250 1.382 1.443 47/64 0.710 0.758 27/64 0.398 0.446 0.027 0.020 0.027
7/8 0.8750 1 7/16 1.394 1.438 1.589 1.660 55/64 0.833 0.885 31/64 0.458 0.510 0.029 0.022 0.029
1 1.0000 1 5/8 1.575 1.625 1.796 1.876 63/64 0.956 1.012 35/64 0.519 0.575 0.031 0.024 0.031
1 1/8 1.1250 1 13/16 1.756 1.812 2.002 2.093 1 7/64 1.079 1.139 39/64 0.579 0.639 0.033 0.027 0.033
1 1/4 1.2500 2 1.938 2.000 2.209 2.309 1 7/32 1.187 1.251 23/32 0.687 0.751 0.035 0.030 0.035
1 3/8 1.3750 2 3/16 2.119 2.188 2.416 2.526 1 11/32 1.321 1.378 25/32 0.747 0.815 0.038 0.033 0.038
1 1/2 1.5000 2 3/8 2.300 2.375 2.622 2.742 1 15/32 1.433 1.505 27/32 0.808 0.880 0.041 0.036 0.041
1 5/8 1.6250 2 9/16 2.481 2.562 2.828 2.959 1 19/32 1.556 1.632 29/32 0.868 0.944 0.044 0.038 0.044
1 3/4 1.7500 2 3/4 2.662 2.750 3.035 3.175 1 23/32 1.679 1.759 31/32 0.929 1.009 0.048 0.041 0.048
1 7/8 1.8750 2 15/16 2.844 2.938 3.242 3.392 1 27/32 1.802 1.886 1 1/32 0.989 1.073 0.051 0.044 0.051
2 2.0000 3 1/8 3.025 3.125 3.449 3.608 1 31/32 1.925 2.013 1 3/32 1.050 1.138 0.055 0.047 0.055
2 1/4 2.2500 3 1/2 3.388 3.500 3.862 4.041 2 13/64 2.155 2.251 1 13/64 1.155 1.251 0.061 0.052 0.061
2 1/2 2.5000 3 7/8 3.750 3.875 4.275 4.474 2 29/64 2.401 2.505 1 29/64 1.401 1.505 0.068 0.058 0.068
2 3/4 2.7500 4 1/4 4.112 4.250 4.688 4.907 2 45/64 2.647 2.759 1 37/64 1.522 1.634 0.074 0.064 0.074
3 3.0000 4 5/8 4.475 4.625 5.102 5.340 2 61/64 2.893 3.013 1 45/64 1.643 1.763 0.081 0.070 0.081
3 1/4 3.2500 5 4.838 5.000 5.515 5.774 3 3/16 3.124 3.252 1 13/16 1.748 1.876 0.087 0.075 0.087
3 1/2 3.5000 5 3/8 5.200 5.375 5.928 6.207 3 7/16 3.370 3.506 1 15/16 1.870 2.006 0.094 0.081 0.094
3 3/4 3.7500 5 3/4 5.562 5.750 6.341 6.640 3 11/16 3.616 3.760 2 1/16 1.990 2.134 0.100 0.087 0.100
4 4.0000 6 1/8 5.925 6.125 6.755 7.073 3 15/16 3.862 4.014 2 3/16 2.112 2.264 0.107 0.093 0.107

All dimensions are as per ASME B18.2.2 Heavy Hex Nuts and Heavy Hex Jam Nuts standards.

Stainless Steel 321/321H Washers Dimensions

Bolt Size A B C Weight (lbs.) Per 100 Pieces
ID OD Thickness
1/2 9/16 13/8 0.109 4
5/8 11/16 13/4 0.134 8
3/4 13/16 2 0.148 11
7/8 15/16 21/4 0.165 15
1 11/16 21/2 0.165 19
11/8 11/4 23/4 0.165 22
11/4 13/8 3 0.165 26
13/8 11/2 31/4 0.180 33
11/2 15/8 31/2 0.180 38
15/8 13/4 33/4 0.180 43
13/4 17/8 4 0.180 50
17/8 2 41/4 0.180 57
2 21/8 41/2 0.180 63
21/4 23/8 43/4 0.220 83
21/2 25/8 5 0.238 96
23/4 27/8 51/4 0.259 110
3 31/8 51/2 0.284 130

Stainless Steel 321/321H Stud Bolts Dimension & Size Chart

Class 150 Flanges ASME B16.5 (Stud bolt sizes) Length of Stud Bolts 
NPS Outside Diameter of Flange The diameter of Bolt Circle The diameter of Bolt Holes Number of Bolts Diameter of Bolts Raised Face
0.06 in		 Ring Joint
1/2 3 1/2 2 3/8 5/8 4 1/2 2 1/4 –
3/4 3 7/8 2 3/4 5/8 4 1/2 2 1/2 –
1 4 1/4 3 1/8 5/8 4 1/2 2 1/2 3
1 1/4 4 5/8 3 1/2 5/8 4 1/2 2 3/4 3 1/4
1 1/2 5 3 7/8 5/8 4 1/2 2 3/4 3 1/4
2 6 4 3/4 3/4 4 5/8 3 1/4 3 3/4
2 1/2 7 5 1/2 3/4 4 5/8 3 1/2 4
3 7 1/2 6 3/4 4 5/8 3 1/2 4
3 1/2 8 1/2 7 3/4 8 5/8 3 1/2 4
4 9 7 1/2 3/4 8 5/8 3 1/2 4
5 10 8 1/2 7/8 8 3/4 3 3/4 4 1/4
6 11 9 1/2 7/8 8 3/4 4 4 1/2
8 13 1/2 11 3/4 7/8 8 3/4 4 1/4 4 3/4
10 16 14 3/4 1 12 7/8 4 1/2 5
12 19 17 1 12 7/8 4 3/4 5 1/4
14 21 18 3/4 1 1/8 12 1 5 1/4 5 3/4
16 23 1/2 21 1/4 1 1/8 16 1 5 1/4 5 3/4
18 25 22 3/4 1 1/4 16 1 1/8 5 3/4 6 1/4
20 27 1/2 25 1 1/4 20 1 1/8 6 1/4 6 3/4
24 32 29 1/2 1 1/4 20 1 1/4 6 3/4 7 1/4
Class 300 Flanges ASME B16.5 Length of Stud Bolts 
NPS Outside Diameter of Flange The diameter of Bolt Circle The diameter of Bolt Holes Number of Bolts Diameter of Bolts Raised Face
0.06 in		 Ring Joint
1/2 3 3/4 2 5/8 5/8 4 1/2 2 1/2 3
3/4 4 5/8 3 1/4 3/4 4 5/8 3 3 1/2
1 4 7/8 3 1/2 3/4 4 5/8 3 3 1/2
1 1/4 5 1/4 3 7/8 3/4 4 5/8 3 1/4 3 3/4
1 1/2 6 1/8 4 1/2 7/8 4 3/4 3 1/2 4
2 6 1/2 5 3/4 8 5/8 3 1/2 4
2 1/2 7 1/2 5 7/8 7/8 8 3/4 4 4 1/2
3 8 1/4 6 5/8 7/8 8 3/4 4 1/4 4 3/4
3 1/2 9 7 1/4 7/8 8 3/4 4 1/4 5
4 10 7 7/8 7/8 8 3/4 4 1/2 5
5 11 9 1/4 7/8 8 3/4 4 3/4 5 1/4
6 12 1/2 10 5/8 7/8 12 3/4 4 3/4 5 1/2
8 15 13 1 12 7/8 5 1/2 6
10 17 1/2 15 1/4 1 1/8 16 1 6 1/4 6 3/4
12 20 1/2 17 3/4 1 1/4 16 1 1/8 6 3/4 7 1/4
14 23 20 1/4 1 1/4 20 1 1/8 7 7 1/2
16 25 1/2 22 1/2 1 3/8 20 1 1/4 7 1/2 8
18 28 24 3/4 1 3/8 24 1 1/4 7 3/4 8 1/4
20 30 1/2 27 1 3/8 24 1 1/4 8 8 3/4
24 36 32 1 5/8 24 1 1/2 9 10

Stainless Steel 321/321H Screws Size Chart

Screw Diameter Typical Metric Sizes Available Head Styles
Small M3–M5 Pan / Flat / Button
Medium M6–M10 Hex / Socket / Pan / Flat
Large M12–M16 Socket / Hex / Customized
Heavy M18 and above Customized / Industrial

Stainless Steel 321/321H Fasteners Regular Standards

Hexagon Bolt / Set Screws Stud Bolt Hexagon Nuts Socket Cap screws
DIN 931 BS4882 DIN 934 DIN 912
DIN 933 DIN 976 BS 1768 DIN 6912
BS 1768 BS 1769 DIN 7984
UNI 5731 BS 1083 ANSI B18.3
UNI 5739 BS 3692 ISO 4762
ISO 4014 ISO 4032 UNI 5931
ISO 4017 ISO 4033 BS 2470
BS 1769 ANSI B18.2.2 BS 4168
BS 3692
ANSI B18.2.1
Socket & Slotted Set Screws Socket & Slotted Countersunk Screws Studs Washers
DIN 913 DIN 963 DIN 938 DIN 125
DIN 914 DIN 7991 DIN 939 DIN 9021
DIN 915 BS 4168 DIN 2510 BS 4320
DIN 916 BS 1981 BS 4439 BS 3410
DIN 551 BS 483 BS 2693
DIN 553 BS 2470 Spring Washers
DIN 438 DIN 127
BS 4168 BS 4464
BS 1802

Stainless Steel 321/321H Fasteners Inventory

  • Stainless Steel 321 Fastener
  • ASTM A193 SS 321 Bolts
  • 321 Stainless Steel Screw
  • SS 321 Dock Washer
  • SS 321 Double Ended Stud
  • SS 321 Eye Bolt Supplier in Mumbai
  • SS 321 Industrial Fasteners
  • SS 321 Fender Washer
  • Stainless Steel 321 Wing Nuts
  • SS 321 Split / Lock Washer
  • 321 SS Coupling Nut Stockist
  • Stainless Steel 321 J Bolts
  • Stainless Steel 321 Self Locking Nuts
  • 321 Stainless Steel Hex Cap Screw Manufacturer
  • ASTM A193 Stainless Steel 321 Acorn Nuts
  • UNS S32109 Structural Bolts
  • Stainless Steel 321 Machine Bolts
  • Stainless Steel 321 Square Bolts
  • SS 321 Carriage Bolt
  • 321 Stainless Steel Machine Bolt
  • Stainless Steel 321 Washer
  • Stainless Steel 321 Heavy Hex Nuts
  • SS 321 Customized Washer Manufacturer
  • 321 Stainless Steel Hex Head Bolt
  • 321 Stainless Steel Eye Bolt
  • Stainless Steel 321 Tooth Lock Washer
  • DIN 1.4541 Screw
  • Stainless Steel 321 Countersunk Washer
  • Stainless Steel 321 Elevator Bolt
  • 321 Stainless Steel Fender Washer
  • ASTM A193 321 SS Hex Head Screw
  • Stainless Steel 321 Bolts
  • Stainless Steel 321 U Bolt Exporter
  • Stainless Steel 321 Foundation Bolts
  • Stainless Steel 321 Wing Nuts
  • ASTM A193 SS 321 T-Head Bolts
  • UNS S32100 Machine Bolt
  • 321 Stainless Steel Stud
  • Stainless Steel 321 Nuts
  • ASME SA193 SS 321 Carriage Bolt
  • SS 321 Full Threaded Bolt Stockholder
  • SS 321 Hex Nuts
  • Stainless Steel 321 Threaded Rod
  • SS 321 Fasteners Stockist
  • Stainless Steel 321 Shoulder Bolt
  • Stainless Steel 321 Lag Bolts
  • ASTM A193 SS 321 Hex Set Screw
  • Stainless Steel 321 Nyloc Nuts
  • SS 321 Stud Distributor
  • 1.4878 Hex Washers

We Export this Stainless Steel 321/321H Fasteners to countries such as Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen

We Supply Stainless Steel 321/321H Fasteners to cities including Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmadabad, Pune, Surat, Jaipur, Kanpur, Lucknow, Nagpur, Ghaziabad, Indore, Coimbatore, Kochi, Patna, Kozhikode, Bhopal, Thrissur, Vadodara, Agra, Malappuram, Thiruvananthapuram, Kannur, Ludhiana, Nashik, Vijayawada, Madurai, Varanasi, Meerut, Faridabad, Rajkot, Jamshedpur, Srinagar, Jabalpur, Asansol, Vasai Virar City, Allahabad, Dhanbad, Aurangabad, Amritsar, Jodhpur, Ranchi, Raipur, Kollam, Gwalior, Durg-Bhilainagar, Chandigarh, Tiruchirappalli, Kota
Fasteners
Product Range
Sheets, Plates & Coils
Pipes & Tubes
Pipe Fittings
Forged Fittings
Round Bars
Flanges
Fasteners
Company Brochure
E-Catalogue

Company Brochure

Download
Our Commitment

Honesty is our name. Quality is our promise.

Contact Us Contact Us