Manufacturer, Exporter & Supplier of
Stainless Steel 347/347H Fasteners

ASTM F593 Stainless Steel 347 Fasteners Suppliers, SS 347H Fasteners, 347H Stainless Steel Fasteners, Stainless Steel S34700 Fastener in Best Price, Austenitic Stainless Steel 347 Fasteners, Stainless Steel S34709 Fastener, 347 Stainless Steel Nuts, SS 347/347H Screws, 347/347H Stainless Steel Bolts, Stainless Steel 347 Stud Bolts, F1554 Stainless Steel S347/347H Fasteners, Stainless Steel 1.4878 Fastener, SS 347 Coupling Nut, ASME SF594 Stainless Steel 347/347H Fasteners Supplier in India.

Honesty Steel & Alloys Ltd. is a leading Manufacturer, Exporter & Supplier of Stainless Steel 347/347H Fasteners, offering high-quality fasteners for demanding applications across chemical processing, petrochemical, power generation, oil & gas, aerospace, heat-treatment, and other industrial sectors.

Stainless Steel 347 is an austenitic stainless steel stabilized with columbium (niobium), providing excellent resistance to intergranular corrosion after exposure to elevated temperatures. SS 347H is the higher-carbon version of Grade 347 and is designed primarily for high-temperature applications where enhanced creep strength and stress-rupture properties are required. Stainless Steel 347/347H Hex Bolts feature a six-sided head designed for installation using standard spanners or wrenches.

Stainless Steel 347 Fasteners are manufactured from stabilized austenitic stainless steel containing niobium to improve resistance to intergranular corrosion. The grade is particularly suitable for applications involving repeated heating and cooling or exposure to temperatures where unstabilized stainless steels may become susceptible to sensitization. Stainless Steel 347/347H Stud Bolts are threaded rods used with nuts for fastening flanges, valves, pressure vessels and piping components.

Stainless Steel 347H Fasteners contain a higher carbon level than Grade 347 and are primarily intended for high-temperature service. The higher carbon content provides improved high-temperature strength, creep resistance and stress-rupture properties.

We manufacture and supply SS 347/347H Bolts, Nuts, Screws, Washers, Studs, Threaded Rods, U-Bolts, Anchor Bolts, Eye Bolts, Hex Bolts, Socket Head Cap Screws, Machine Screws and other customized fasteners according to customer requirements and applicable ASTM, ASME, DIN, ISO, ANSI and other international standards.

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Stainless Steel 347/347H Fasteners Specifications

Property Specification
Product Stainless Steel 347/347H Fasteners
Material Austenitic Stainless Steel
Grade SS 347 / 347H
UNS S34700 / S34709
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 347/347H Fasteners

STANDARD WERKSTOFF NR. UNS JIS GOST EN
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H – X6CrNiNb18-12

Chemical Composition of Stainless Steel 347/347H Fasteners

Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 20.00 10xC – 1.10 9.00 – 13.00 62.74 min
SS 347H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 8xC – 1.10 9.0 -13.0 63.72 min

Mechanical Properties of Stainless Steel 347/347H Fasteners

Grades Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 347 / 347H 8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Types of Stainless Steel 347/347H Fasteners

Stainless Steel 347/347H Carriage Bolts

Stainless Steel 347/347H Eye Bolts

Stainless Steel 347/347H Self Tapping Screws

Stainless Steel 347/347H Anchor Bolt

Stainless Steel 347/347H U Bolts

Stainless Steel 347/347H Machine Screws

Stainless Steel 347/347H Socket Screws

Stainless Steel 347/347H Hex Coupling Nut

Stainless Steel 347/347H Hex Nuts

Stainless Steel 347/347H Lock Nuts

Stainless Steel 347/347H Shoulder Bolts

Stainless Steel 347/347H T Head Bolts

Stainless Steel 347/347H Flat Washers

Stainless Steel 347/347H Lock Washers

Stainless Steel 347/347H Stud Bolts

Stainless Steel 347/347H Flanged Bolts


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Manufacturing Standards of Stainless Steel 347/347H 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 347/347H 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 347/347H 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 347/347H 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 347/347H 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 0.347 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 347/347H 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 0.347 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 1.347 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 347/347H 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 347/347H 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 347/347H 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 347/347H 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 347/347H Fasteners Inventory

  • Stainless Steel 347 Fastener
  • ASTM A193 SS 347 Bolts
  • 347 Stainless Steel Screw
  • SS 347 Dock Washer
  • SS 347 Double Ended Stud
  • SS 347 Eye Bolt Supplier in Mumbai
  • SS 347 Industrial Fasteners
  • SS 347 Fender Washer
  • Stainless Steel 347 Wing Nuts
  • SS 347 Split / Lock Washer
  • 347 SS Coupling Nut Stockist
  • Stainless Steel 347 J Bolts
  • Stainless Steel 347 Self Locking Nuts
  • 347 Stainless Steel Hex Cap Screw Manufacturer
  • ASTM A193 Stainless Steel 347 Acorn Nuts
  • UNS S34709 Structural Bolts
  • Stainless Steel 347 Machine Bolts
  • Stainless Steel 347 Square Bolts
  • SS 347 Carriage Bolt
  • 347 Stainless Steel Machine Bolt
  • Stainless Steel 347 Washer
  • Stainless Steel 347 Heavy Hex Nuts
  • SS 347 Customized Washer Manufacturer
  • 347 Stainless Steel Hex Head Bolt
  • 347 Stainless Steel Eye Bolt
  • Stainless Steel 347 Tooth Lock Washer
  • DIN 1.4541 Screw
  • Stainless Steel 347 Countersunk Washer
  • Stainless Steel 347 Elevator Bolt
  • 347 Stainless Steel Fender Washer
  • ASTM A193 347 SS Hex Head Screw
  • Stainless Steel 347 Bolts
  • Stainless Steel 347 U Bolt Exporter
  • Stainless Steel 347 Foundation Bolts
  • Stainless Steel 347 Wing Nuts
  • ASTM A193 SS 347 T-Head Bolts
  • UNS S34700 Machine Bolt
  • 347 Stainless Steel Stud
  • Stainless Steel 347 Nuts
  • ASME SA193 SS 347 Carriage Bolt
  • SS 347 Full Threaded Bolt Stockholder
  • SS 347 Hex Nuts
  • Stainless Steel 347 Threaded Rod
  • SS 347 Fasteners Stockist
  • Stainless Steel 347 Shoulder Bolt
  • Stainless Steel 347 Lag Bolts
  • ASTM A193 SS 347 Hex Set Screw
  • Stainless Steel 347 Nyloc Nuts
  • SS 347 Stud Distributor
  • 1.4878 Hex Washers

We Export this Stainless Steel 347/347H 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 347/347H 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