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Stainless Steel 347/347H Nuts Manufacturer & Exporter

Stainless Steel 347/347H Nuts

347 Stainless Steel Nut, SS DIN 1.4550 Hex Head Nut, SUS 347H Imperial Thread Nylock Nuts, SS EN X6CrNiNb18-10 Hex Nut Suppliers in India.

Ranfit Metal & Alloys is a popular exporter of SS 347 / 347H Nuts, which is easily welded. We supply Stainless Steel 347 Hex Head Nuts in a variety of lengths and widths and can custom cut to your exact specifications. Stainless Steel 347H Square Nuts offers higher creep and stress rupture properties. SS 347 Lock Nuts might also be considered for exposures where sensitization and inter-granular corrosion are concerns. In order to provide optimum resistance to inter-granular corrosion for SS 347H Eye Nuts and to polythionic acid SCC in service temperatures at 1500 Degree F – 1650 Degree F, an air cool may be used.

347 Stainless Steel Wing Nuts is used almost exclusively for service within the sensitizing temperature range. 347H Stainless Steel T-Nuts is used in jet aircraft components and oil refinery equipment. The use of a higher alloyed filler metal like Stainless Steel UNS S34700 Nuts can be necessary due to the cast structure of the weld metal. Stainless Steel UNS S34709 Nuts is not recommended for certain welding techniques as it is not consumable. Heat treatment after welding for Alloy 347 Panel Nuts is not normally usual. Alloy 347H Coupling Nuts is readily welded by most standard processes. Grade 347 Dome Nuts reduces susceptibility to inter-granular corrosion. In most instances, the carbon content of Grade 347H Acorn Nuts enables dual certification.

Stainless Steel 347 Hex Jam Nylon Lock Nuts, SS UNS S34700 Hex Nuts, 347H Stainless Steel Forged Eye Nuts, SS 347 Finished Hex Nuts Supplier & Exporter in India.


Stainless Steel 347/347H Nuts Specification

Grade Stainless Stel 347 (S34700) | Stainless Stel 347H (S34709)
SS 347/347H Nut size Size : M3 - M56 | 3/6" to 2" | Custom Sizes
SS 347/347H Nuts Length 3 mm to 200 mm
SS 347/347H Nuts UNF, BSW, BSF, METRIC, UNC, or as required
Standard of SS 347/347H Nuts DIN : DIN 934, DIN 931, DIN 970, DIN 933
UTS : UNEF, NPT, UNC, UNS, UNF, NPTF
ISO : JIS standards, ISO 4033, ISO 4032,
ANSI – American National Standards Institute
ASME B18.5
ANSI B 28.2.4 1M
ANSI B 18.2.4 2M
as per defined in ASME B18.2.2 Hex nuts
Form of SS 347/347H Nuts Hex, Threading, Square, Round as per Gauge Etc.
SS 347/347H Nuts Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification Dual Certified As per ASTM & ASME Codes
SS 347/347H Nuts Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Popular Types of Nut Hex Head Nut, Eye Nut, Dome Nut, Wing Nut, T Nut, Panel Nut, Lock Nut, Coupling Nut, Square Nut, Acorn Nut, Hex Rivet Nut Screw Nut, Washer Nut,,A4-80 Heavy Hex Nut, 8.8 Hex Head Rivet Nut, Sleeve Nut, Slotted Nut, Socket Nut, Shoulder Nut etc.
SS 347/347H Nuts Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Test Certificate of Nuts as per EN 10204 / 3.1 Manufacturer Test Certificate
Additional Certifications PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Production process M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC
Head drive of Nuts Six-Lobe,Phillips,Phillips/Slot, Slotted etc
Packing of Nuts IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request
Surface Coating Ptfe Coated Nuts
Phosphate Coating
Teflon Coating
Zinc Coating
Hot Dipped Galvanizing Coating
Cadmium Coating
Xylon Coating
Nuts finishing Coatings & Finishes : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel
Zinc (blue, black, yellow, white), black oxide,

Stainless Steel 347/347H Nuts Equivalent Grades

Grade ASTM EN/DIN Numerical Equivalent UNS Designation JIS Equivalent Stainless Steel Notation EN/DIN Symbolical Equivalent
SS 347 A193 B8C, A320 B8C EN 1.4550 UNS S34700 SUS347 SS 347 X6CrNiNb18-10
SS 347H EN 1.4961 UNS S34709 SUS347H SS 347H X6CrNiNb18-12

Chemical Composition of SS 347/347H Nuts

Grade Yield Strength 0.2% Proof (MPa) min Tensile Strength (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
347 205 515 40 95 201
347H 205 515 40 92 201

Mechanical Properties of SS 347/347H Nuts

Grade Density (kg/m3) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
347 8000 500 720 193 17.2 17.8 18.4 16.2 21.5
347H 8000 500 720 193 17.2 17.8 18.4 16.2 21.5

Types of Stainless Steel 347/347H Nuts

Stainless Steel 347/347H Hex Nuts

Stainless Steel 347/347H Lock Nuts

Stainless Steel 347/347H Hexagon Coupling Nuts

Stainless Steel 347/347H Square Nuts

Stainless Steel 347/347H Hexagon Castle Nuts

Stainless Steel 347/347H Hexagon Thin Nuts

Stainless Steel 347/347H Nylon Insert Lock Nuts

Stainless Steel 347/347H Hex Domed Cap Nuts

Stainless Steel 347/347H Flex Lock Nut

Stainless Steel 347/347H Wing Nut

Stainless Steel 347/347H Eye Nut

Stainless Steel 347/347H Hex Head Rivet Nuts

Stainless Steel 347/347H Slotted Nuts

Stainless Steel 347/347H Sleeve Nuts

Stainless Steel 347/347H Hex Jam Nuts


SS 347/347H Nuts Forms & Availability

Products Size
Stainless Steel 347/347H Acorn Nuts Stainless Steel 347/347H Flange Nuts Sizes M3 - M56 | 3/6" to 2"
Stainless Steel 347/347H Finish Nuts Stainless Steel 347/347H Square Nut
Stainless Steel 347/347H Machine Screw Nuts Stainless Steel 347/347H Nylon Jam Nuts
Stainless Steel 347/347H Nylon Insert Hex Lock Nuts Stainless Steel 347/347H Waxed Nylon Insert Lock Nuts
Stainless Steel 347/347H T Nuts Stainless Steel 347/347H Two Way Lock Nuts
Stainless Steel 347/347H Hex Jam Nuts Stainless Steel 347/347H Coupling Nuts
Stainless Steel 347/347H Eye Nuts Stainless Steel 347/347H Insert Nuts

Stainless Steel 347/347H Nuts Dimension

Thread Size (dia.-TPI) Major Diameter (in.) Lead (in./rev.) Product Line Hand Material Style Width Across Flats (in.) Outside Diameter (in.) Overall Length (in.)
1/4 - 16 0.25 0.063 Acme RH Stainless Steel Hex 0.5 0 0.25
3/8 - 12 0.375 0.083 Acme RH Stainless Steel Hex 0.688 0 0.375
3/8 - 12 0.375 0.083 Acme LH Stainless Steel Hex 0.688 0 0.375
1/2 - 10 0.5 0.1 Acme RH Stainless Steel Hex 0.875 0 0.5
5/8 - 8 0.625 0.125 Acme RH Stainless Steel Hex 1.063 0 0.625
3/4 - 6 0.75 0.167 Acme RH Stainless Steel Hex 1.25 0 0.75
3/4 - 5 0.75 0.2 Acme RH Stainless Steel Hex 1.25 0 0.75
1 - 5 1 0.2 Acme RH Stainless Steel Hex 1.625 0 1
1 - 5 1 0.2 Acme LH Stainless Steel Hex 1.625 0 1
1 - 4 1 0.25 Acme RH Stainless Steel Hex 1.625 0 1
1 - 4 1 0.25 Acme LH Stainless Steel Hex 1.625 0 1
1 1/4 - 5 1.25 0.2 Acme RH Stainless Steel Hex 2 0 1.25
1 1/2 - 4 1.5 0.25 Acme RH Stainless Steel Hex 2.25 0 1.5
1 3/4 - 4 1.75 0.25 Acme RH Stainless Steel Hex 2.75 0 1.75
2 - 4 2 0.25 Acme RH Stainless Steel Hex 3 0 2
1/2 - 10 0.5 0.1 Acme RH Steel Square 0.875 0 0.5
1/2 - 10 0.5 0.1 Acme LH Steel Hex 0.875 0 0.5
1/2 - 10 0.5 0.1 Acme LH Steel Round 0 0.875 0.5
1/2 - 10 0.5 0.1 Acme LH Steel Square 0.875 0 0.5
5/8 - 10 0.625 0.1 Acme RH Steel Hex 1.063 0 0.625
5/8 - 10 0.625 0.1 Acme LH Steel Hex 1.063 0 0.625
5/8 - 8 0.625 0.125 Acme RH Steel Hex 1.125 0 0.625
5/8 - 8 0.625 0.125 Acme RH Steel Round 0 1.125 0.625
5/8 - 8 0.625 0.125 Acme RH Steel Square 1.125 0 0.625
5/8 - 8 0.625 0.125 Acme LH Steel Hex 1.125 0 0.625
5/8 - 8 0.625 0.125 Acme LH Steel Round 0 1.125 0.625
5/8 - 8 0.625 0.125 Acme LH Steel Square 1.125 0 0.625
3/4 - 10 0.75 0.1 Acme RH Steel Hex 1.25 0 0.75
3/4 - 10 0.75 0.1 Acme LH Steel Hex 1.25 0 0.75
3/4 - 8A Thread Size (dia.-TPI) .750B Major Diameter (in.) .125 C Lead (in./rev.) Acme D Product Line RH EH and Steel F Material HexGStyle 1.250H Width Across Flats (in.) .000I Outside Diameter (in.) .750J Overall Length (in.)
3/4 - 8 0.75 0.125 Acme RH Steel Round 0 1.25 0.75
3/4 - 8 0.75 0.125 Acme RH Steel Square 1.25 0 0.75
3/4 - 8 0.75 0.125 Acme LH Steel Hex 1.25 0 0.75
3/4 - 8 0.75 0.125 Acme LH Steel Round 0 1.25 0.75
3/4 - 8 0.75 0.125 Acme LH Steel Square 1.25 0 0.75
3/4 - 6 0.75 0.167 Acme RH Steel Hex 1.25 0 0.75
3/4 - 6 0.75 0.167 Acme RH Steel Round 0 1.25 0.75
3/4 - 6 0.75 0.167 Acme RH Steel Square 1.25 0 0.75
3/4 - 6 0.75 0.167 Acme LH Steel Hex 1.25 0 0.75
3/4 - 6 0.75 0.167 Acme LH Steel Round 0 1.25 0.75
3/4 - 6 0.75 0.167 Acme LH Steel Square 1.25 0 0.75
3/4 - 5 0.75 0.2 Acme RH Steel Hex 1.25 0 0.75
3/4 - 5 STUB 0.75 0.2 Acme RH Steel Hex 1.25 0 0.75
3/4 - 5 STUB 0.75 0.2 Acme RH Steel Round 0 1.25 0.75

Stainless Steel 347/347H Nuts Standards

DIN Nuts Hexagon Nuts
Din 315 Nuts DIN 934
Din 431 Nuts BS 1768
Din 555 Nuts BS 1769
Din 557 Nuts BS 1083
Din 562 Nuts BS 3692
Din 582 Nuts ISO 4032
Din 934 Nuts ISO 4033
Din 936 Nuts ANSI B18.2.2
Din 1587 Nuts
Din 6923 Nuts

SS 347/347H Nuts Dimensions

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 Nuts Sizes

Stainless Steel Nuts size chart Stainless Steel Nuts size guide Stainless Steel Nuts dimensions
3/8″-16 Grade 5 Finished Stainless Steel 347/347H Nuts 1/2″-13 Yellow Grade 8 Finished Stainless Steel 347/347H Nuts 1/4″-20 Grade 2 NE Steel Stainless Steel 347/347H Nuts
5/16″-18 Grade 2 NE Steel Nylon Insert Stainless Steel 347/347H Nuts 1/2″-13 ASTM A563 Grade A Steel Stainless Steel 347/347H Nuts 3/8″-16 ASTM A563 Grade A Steel Stainless Steel 347/347H Nuts
3/4″-10 A194 2-H Plain Finish Heavy Stainless Steel 347/347H Nut 5/8″-11 A194 2-H Plain Finish Heavy Stainless Steel 347/347H Nut 3/8-16 Low Carbon Plated Heavy Stainless Steel 347/347H Nut
5/16″-18 Acorn Stainless Steel Nuts 18-8 Stainless Steel 347/347H 1/2″-13 Acorn Stainless Steel Nuts 18-8 Stainless Steel 347/347H 5/16″-18 Case Hardened Stainless Steel 347/347H Nuts
5/8-18 Stainless Steel 347/347H Nuts 3/4-16 Stainless Steel 347/347H Nuts 5/8″-11 Case Hardened Stainless Steel 347/347H Nuts
7/8″-14 SAE J995 Grade 2 Plain Finish Steel Stainless Steel 347/347H Nuts 1″-8 SAE J995 Grade 2 Plain Finish Steel Stainless Steel 347/347H Nuts 3/8″-16 x 0.620″ – 0.655″ Width Bridge Spot Stainless Steel 347/347H Nuts
1/4″-20 Wide Spot Weld Stainless Steel 347/347H Nuts 3/4-10 x L2-1/4 x W1″Coupling SS 347/347H Nuts 3/8-16 x L1-3/4 x W5/8 Coupling Stainless Steel 347/347H Nuts
1/4-20 Plated Cold Stainless Steel 347/347H Nuts 5/16-18 Plated Cold Stainless Steel 347/347H Nuts 1/2″-13 Grade A Plain Finish Steel Regular Stainless Steel 347/347H Nuts
3/8″-16 Grade A Finish Steel Regular Stainless Steel 347/347H Nuts 5/8″-11 Grade A Finish Steel Regular Stainless Steel 347/347H Nuts M6-1.0 Class 5 Finish Steel Regular Stainless Steel 347/347H Nuts
Nut Size (mm) Diameter*(mm) Height (mm)
Hex Nut Jam Nut Nylock Nut
2 4 1.6 1.2 -
2.5 5 2 1.6 -
3 5.5 2.4 1.8 4
4 7 3.2 2.2 5
5 8 4 2.7 5
6 10 5 3.2 6
7 11 5.5 3.5 -
8 13 6.5 4 8
10 17 8 5 10
12 19 10 6 12
14 22 11 7 14
16 24 13 8 16
18 27 15 9 18.5
20 30 16 10 20
* This is the diameter across the flats. It is also the size of wrench to use.

347/347H Stainless Steel Nut Weight Chart

Size Finished Hex Heavy Hex Finished Jam Heavy Hex Jam Square Heavy Square
1/2" Nut 3.75 6.54 2.62 4.00 5.78 7.87
5/8" Nut 7.33 11.9 4.93 6.96 10.8 14.3
3/4" Nut 11.9 19.3 7.70 11.0 15.4 23.5
7/8" Nut 19.0 29.7 12.0 16.7 24.5 36.2
1" Nut 28.3 42.5 17.6 23.5 36.3 51.5
11/8" Nut 40.3 59.2 24.7 32.4 52.5 72.4
11/4" Nut 54.3 78.6 36.1 45.8 70.6 95.5
13/8" Nut 73.0 102 47.9 59.3 94.5 125.0
11/2" Nut 94.3 131 60.9 74.8 122 161
15/8" Nut 162 91.6
13/4" Nut 151 204 100 114
17/8" Nut 241 134
2" Nut 224 299 140 165
21/4" Nut 419 227
21/2" Nut 564 332
23/4" Nut 738 429
3" Nut 950 545
31/4" Nut 1194 651
31/2" Nut 1526 851
33/4" Nut 1812 1005
4" Nut 2180 1200

Other Types of SS 347/347H Nuts

Stainless Steel 347 DIN 935 Nuts ASTM A193 Stainless Steel 347H Slotted Nut
ASTM A193 SS 347H Way Lock Nuts Manufacturer Stainless Steel 347 Hex Nut Washer
SS UNS S34700 SS Serrated Flange Nuts 347H Stainless Steel High Nuts Supplier
347 Stainless Steel Panel Nuts SS UNS S34709 Coupling Nut
SS DIN 1.4550 Square Nut Manufacturer ASME SA193 347 Stainless Steel Hex Head Nut
ASME SA193 347H Stainless Steel Panel Nuts SS DIN 1.4961 Coupling Nut
SUS 347 SS Square Nut Manufacturer SS EN X6CrNiNb18-10 Hex Head Nut
SS EN X6CrNiNb18-12 Self Locking Nuts Traders SUS 347H SS Square Nuts
Grade 347H Stainless Steel Cap Nut Stainless Steel 347 Coupling Nuts
347 Stainless Steel spring T Nut Manufacturer Grade 347H Stainless Steel Slotted Nut

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