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Duplex Steel Screws Supplier

Duplex stainless steel screws are fasteners made of duplex stainless steel, a type of stainless steel containing a mixture of austenitic and ferritic microstructures. This material provides excellent corrosion resistance and high strength, making it suitable for use in various applications where both properties are critical.

Duplex Stainless Steel Screws are commonly used in harsh environments where high resistance to corrosion, erosion & pitting is required. These fasteners are commonly used in the marine, oil and gas, chemical processing & power generation industries.

Duplex steel screws are fasteners made of duplex stainless steel, a material that offers several key features. ASTM F593 S31803 DSS Screws are known for their exceptional corrosion resistance, even in harsh environments with exposure to saltwater, acids, and chemicals.

They also offer high strength, making them suitable for applications requiring a durable & reliable fastening solution. ASTM F593 S31803 Duplex Steel Screws can withstand extreme temperatures and resist pitting, crevice corrosion, and stress corrosion cracking. These features make duplex steel screws ideal for use in industries such as marine, oil and gas, chemical processing, and power generation, where reliability and durability are crucial. At Neelkamal Alloys LLP, we offer a variety of high-quality Duplex Stainless Steel Products, including Duplex Steel Screws, Duplex Steel Washers and more.

DSS Screws offer several benefits, making them a popular choice for various industrial applications. Their exceptional corrosion resistance ensures they can withstand exposure to harsh environments without rusting or deteriorating. Their high strength makes them a reliable fastening solution that can handle heavy loads and high stress. UNS S31803 Screw also offer excellent resistance to pitting, crevice corrosion & stress corrosion cracking, which ensures their longevity and reliability in harsh conditions. We offer a wide range of products, including Copper Nickel 70 / 30 Bolts, Shear Connectors, & many more.

Their ability to withstand extreme temperatures makes them suitable for high- and low-temperature applications also Duplex Steel 1.4410 Screws are easy to maintain, requiring minimal cleaning and upkeep, which can help reduce maintenance costs. The benefits of duplex steel screws make them a preferred choice for industries that require durable, reliable, and corrosion-resistant fastening solutions.

Specification For Duplex Steel Screws

Specifications ASTM F593
Screw standard ISO 14583, ISO 10642
British standards BS 57
Screws Size
  • Cold Froging : M2-M24
  • Hot forging M24-M100, 1-1/2” Dia, up to 1100mm lg
  • Machining and CNC for Customized connecting element: up to M100 / 4” Dia, up to 1500mm lg
Duplex Steel Screws M2, M3, (M3.5), M4, M5, M6, M8, M10, M12, (M14), M16, (M18), M20, (M22), M24, (M27), M30, M33, M36, M42, (M45), M48 to M160 and Custom Sizes
Length 3 mm to 200 mm
Threads METRIC, BSW, BSF, UNC, UNF or as required
Standard
  • ISO 14585C ~DIN 7981C
  • DIN 7973C ~ISO 1483
  • DIN 7983C ~ISO 7051
  • ISO 4762, ISO 2009, ISO 7050, ISO 14587, ISO 14587, ISO 14584, ISO 14582
  • ANSI B18.3.1M
  • ASME B18.6.3
  • GB/T5782, GB/T5783, GB5783
DIN, ISO, JIS, GB, IS, BS, ASTM and all International Standards ANSI – American National Standards Institute
DIN Standard B.S. DIN 933, DIN 931, DIN 934, DIN 912, DIN 603, DIN 6923, DIN 970, DIN 7981, DIN 7982, DIN916, DIN 913, DIN 7985
UTS – Unified Thread Standard UNC, UNF, UNEF, UNS, NPT, NPTF
Dimensions ASME B18.6.3 **Exception: screws 6 inches and shorter are fully threaded
Tolerance +/-0.01mm to +/-0.05mm
Type Pan/ Round/ Oval/ Hex Head/ Truss head
Head Pan head, flat head, oval head, hex head, phillips head
Screws Surface Coating
  • Ptfe Coated Screws
  • Hot Dipped Galvanizing Screws
  • Phosphate Screws
  • Teflon Screws
  • Xylon Screws
  • Zinc Phosphate Screws
  • Manganese Phosphate
  • Zinc Electro Plating (Hexavalent or Trivalent Chrome)
  • ZAC (Zinc Alluminium Flake Coating)
  • Cadmium Screws
All surface finishes can be supplied, including Zinc, Galvanised, Sherardized, Electroless Nickel, Dacromet, Geomet & PTFE.
Duplex Steel Screws

Equivalent Grades Of Duplex Steel Screws

STANDARD WERKSTOFF NR. UNS
Duplex Steel 1.4462 S31803 / S32205
Super Duplex 2507 1.4410 S32750
Super Duplex 1.4501 S32760

Duplex Steel Wood Screws Dimension

Wood Screws: Slotted & Phillips Flat Head Dimensions (ASME B18.6.1)

Nominal Size*

Phillips Driver Size

Head Diameter (A)
Head Height (H)
Width of Slot (J)
Depth of Slot (T)
Dimension of Recess
Max
Min
Ref
Max
Min
Max
Min
Dia. Max (M)
Dia. Min (M)
Depth Max (G)
Depth Min (G)
Width Min (N)
2
1
.172
.147
.051
.031
.023
.023
.015
.102
.089
.063
.047
.017
3
1
.199
.141
.059
.035
.027
.027
.017
.107
.094
.068
.052
.018
4
1
.225
.195
.067
.039
.031
.030
.020
.128
.115
.089
.073
.018
5
2
.252
.220
.075
.043
.035
.034
.022
.154
.141
.086
.063
.027
6
2
.279
.244
.083
.048
.039
.038
.024
.174
.161
.106
.083
.029
7
2
.305
.268
.091
.048
.039
.041
.027
.189
.176
.121
.098
.030
8
2
.332
.292
.100
.054
.045
.045
.029
.204
.191
.136
.113
.032
9
2
.358
.316
.108
.054
.045
.049
.032
.214
.201
.146
.123
.033
10
3
.385
.340
.116
.060
.050
.053
.034
.258
.245
.146
.123
.034
12
3
.438
.389
.132
.067
.056
.060
.039
.283
.270
.171
.148
.036
14
3
.507
.452
.153
.075
.064
.070
.046
.283
.270
.171
.148
.036
16
3
.544
.485
.164
.075
.064
.075
.049
.303
.290
.191
.168
.039
Wood Screws: Round Head Dimensions (ASME B18.6.1)

Nominal Size*

Phillips Driver Size

Head Diameter (A)
Head Height (H)
Width of Slot (J)
Depth of Slot (T)
Dimension of Recess
Max
Min
Max
Min
Max
Min
Max
Min
Dia. Max (M)
Dia. Min (M)
Depth Max (G)
Depth Min (G)
Width Min (N)
2
1
.162
.146
.069
.059
.031
.023
.048
.037
.114
.101
.064
.042
.018
4
2
.211
.193
.086
.075
.039
.031
.058
.044
.130
.117
.083
.063
.019
5
2
.236
.217
.095
.083
.043
.035
.063
.047
.154
.141
.074
.046
.027
6
2
.260
.240
.103
.091
.048
.039
.068
.051
.162
.149
.084
.056
.027
7
2
.285
.264
.111
.099
.048
.039
.072
.055
.170
.157
.092
.066
.028
8
2
.309
.287
.120
.107
.054
.045
.077
.058
.178
.165
.101
.075
.030
9
2
.334
.311
.128
.115
.054
.045
.082
.062
.186
.173
.110
.084
.030
10
2
.359
.334
.137
.123
.060
.050
.087
.065
.195
.182
.119
.093
.031
12
3
.408
.382
.153
.139
.067
.056
.096
.073
.249
.236
.125
.099
.032
14
3
.457
.429
.170
.155
.075
.064
.106
.080
.265
.252
.142
.116
.034
Wood Screws: Oval Head Dimensions (ASME B18.6.1)

Nominal Size*

Phillips Driver Size

Head Diameter (A)
Head Height (H)


Width of Slot (J)
Depth of Slot (T)
Dimension of Recess
Max
Min
Side Height (Ref.)
Total Height Max
Total Height Min
Max
Min
Max
Min
Dia. Max (M)
Dia. Min (M)
Depth Max (G)
Depth Min (G)
Width Min (N)
4
1
.225
.195
.067
.104
.084
.039
.031
.059
.049
.136
.123
.094
.077
.019
5
2
.252
.220
.075
.116
.095
.043
.035
.067
.055
.158
.145
.085
.061
.028
6
2
.279
.244
.083
.128
.105
.048
.039
.074
.060
.178
.165
.105
.080
.030
8
2
.332
.292
.100
.152
.126
.054
.045
.088
.072
.205
.192
.131
.106
.033
9
2
.358
.316
.108
.164
.137
.054
.045
.095
.078
.216
.203
.144
.119
.034
10
3
.385
.340
.116
.176
.148
.060
.050
.103
.084
.261
.248
.142
.118
.037
12
3
.438
.389
.132
.200
.169
.067
.056
.117
.096
.283
.270
.165
.140
.040

Diameter Of Duplex Steel Wood Screws Thread & Body

Wood Screws: Thread & Body Diameter – Cut & Rolled Thread Types

Nominal Size* or Basic Screw Diameter

Threads Per Inch
Major Thread Diameter (D)

Body Diameter – (E) Cut Thread
Body Diameter – (E) Rolled Thread
Thread Depth (F)
Max
Min
Max
Min
Max
Min
Min
2
.086
26
.090
.079
.090
.079
.075
.064
.010
3
.099
24
.103
.092
.103
.092
.086
.075
.014
4
.112
22
.116
.105
.116
.105
.095
.084
.016
5
.125
20
.129
.118
.129
.118
.107
.096
.018
6
.138
18
.142
.131
.142
.131
.118
.107
.020
7
.151
16
.155
.144
.155
.144
.127
.116
.022
8
.164
15
.168
.157
.168
.157
.136
.125
.023
9
.177
14
.181
.170
.181
.170
.147
.136
.026
10
.190
13
.194
.183
.194
.183
.157
.146
.030
12
.216
11
.220
.209
.220
.209
.176
.165
.031
14
.242
10
.246
.235
.246
.235
.201
.190
.035
16
.268
9
.272
.261
.272
.261
.214
.203
.038

Dimensions of Duplex Steel Socket Head Cap Screw

Nominal
Thread.
Hex Socket Size
Body diameter and Head height
Head Dia
Soc. length
Size
Pitch
Max
Min
Max
Min
J
D /H
A
K
M3
0.5
2.50
3.00
2.86
5.50
5.20
1.3
M4
0.70
3.00
4.00
3.82
7.00
6.64
2.00
M5
0.8
4.00
5.00
4.82
8.50
8.14
2.70
M6
1.0
5.00
6.00
5.82
10.00
9.64
3.30
M8
1.25
6.00
8.00
7.78
13.00
12.57
4.3
M10
1.5
8.00
10.00
9.78
16.00
15.57
5.50
M12
1.75
10.00
12.00
11.73
18.00
17.57
6.60
M16
2.0
14.00
16.00
15.73
24.00
23.48
8.80
M20
2.5
17.00
20.00
19.67
30.00
29.48
10.70
M24
3.0
19.00
24.00
23.67
36.00
35.38
12.90

Dimensions of Duplex Steel Countersunk Screw

Nominal size
Body Dia
Thread Pitch
Hex Socket Size
Max Cone Dia
Head Dia
Head Height
Soc. length
D(max)
D(min)
J
A1
A_max
A_Min
H
K
M3
3.00
2.86
0.5
2,0
6,72
6,00
5,82
1,86
1,05
M4
4.00
3.82
0.70
2,5
8,96
8,00
7,78
2,48
1,49
M5
5.00
4.82
0.8
3,0
11,2
10,00
9,78
3,1
1,86
M6
6.00
5.82
1.0
4,0
13,44
12,00
11,75
3,72
2,16
M8
8.00
7.78
1.25
5,0
17,92
16,00
15,73
4,96
2,85
M10
10.00
9.78
1.5
6,0
22,4
20,00
19,67
6,2
3,60
M12
12.00
11.73
1.75
8,0
26,88
24,00
23,67
7,44
4,35
M16
16.00
15.73
2.0
10,0
33,6
32,00
29,67
8,8
4,89
M20
20.00
19.67
2.5
10,0
40,32
40,00
35,61
10,16
5,49

Various Types of Duplex Steel Screws

Machine Screws

Duplex Steel Machine Screws

  • DSS Machine Screw
  • Super Duplex 2507 Machine Screws
  • ANSI B18.6.3 Duplex Steel Machine Screws
  • Super Duplex S32750 Machine Screws 
  • Duplex Steel S31803 Machine Screws
  • DSS 2205 Machine Screw 
  • ASME B18.6.3 Duplex Slotted Round Head Machine Screws
  • Duplex Steel S32205 Machine Screws 
  • Duplex Machine Screws 
  • Duplex Steel Machine Screws 
  • 1.4462 Machine Screws
  • S31803 Duplex Machine Screw
  • Duplex Steel 1.4410 Machine Screws
  • Duplex Stainless Steel Machine Screws 
  • Super Duplex Steel 2507 Machine Screws
  • SDSS S32760 Machine Screws
  • Duplex Steel S31803 Machine Screws 
  • 2205 Duplex Steel Machine Screws
  • Duplex 1.4501 Machine Screws 
  • Super Duplex Stainless Steel Machine Screws 
  • UNS S32205 Machine Screws
  • S32205 Duplex Steel Machine Screws
Socket Head Cap Screws

Duplex Steel Socket Head Cap Screws

  • S31803 Duplex Steel Socket Head Cap Screws
  • ANSI B18.3 Duplex Steel Socket Head Cap Screw
  • Super Duplex S32750 Socket Head Cap Screws
  • ASME B18.3 Duplex Hexagon Socket Head Cap Screws
  • SDSS S32760 Socket Head Cap Screws 
  • Duplex Steel S32205 Socket Head Cap Screws
  • DSS 2205 Socket Head Cap Screw 
  • Duplex Steel S31803 Socket Head Cap Screws 
  • 2205 Duplex Socket Head Cap Screw
  • Duplex Steel 1.4462 Socket Head Cap Screws
  • Duplex Socket Head Cap Screws 
  • Duplex Stainless Steel Socket Head Cap Screws 
  • Super Duplex Steel 2507 Socket Head Cap Screws
  • SDSS S32750 Socket Head Cap Screws
  • Super Duplex Stainless Steel S32760 Socket Head Cap Screws 
  • S32205 Duplex Steel Socket Head Cap Screws
  • Duplex Socket Head Cap Screws 
  • SDSS 1.4501 Socket Head Cap Screws 
  • Duplex Steel Socket Head Cap Screws 
  • UNS S31803 Socket Head Cap Screws
Allen Grub Screws

Duplex Steel Allen Grub Screws

  • DSS Allen Grub Screw
  • Super Duplex S32750 Allen Head Grub Screws
  • Super Duplex Stainless Steel S32760 Allen Grub Screws
  • Duplex Stainless Steel S32205 Allen Grub Screws 
  • Duplex Steel Allen Head Grub Screws 
  • 1.4462 Allen Grub Screws
  • S32205 Duplex Allen Grub Screw
  • Super Duplex Steel S32760 Allen Grub Screws
  • Duplex 2205 Allen Grub Screws
  • Duplex Steel S31803 Allen Grub Screws 
  • 2205 Duplex Steel Allen Grub Screws
  • Duplex Steel Allen Grub Screws 
  • Super Duplex 1.4410 Allen Grub Screws 
  • Duplex Steel Allen Grub Screws 
  • UNS S32750 Allen Grub Screws
  • S31803 Duplex Steel Allen Grub Screws
Pan Phillips Screws

Duplex Steel Pan Phillips Screws

  • Duplex Pan Phillips Screw
  • Super Duplex S32750 Pan Head Phillips Screws
  • Duplex S32205 Pan Phillips Screws 
  • Duplex Steel S31803 Pan Phillips Screws
  • SDSS S32750 Pan Phillips Screw
  • Super Duplex Stainless Steel 2507 Pan Phillips Screws Stockist
  • Duplex Steel Pan Phillips Screws 
  • Duplex Steel Pan Head Phillips Screws
  • Duplex Pan Phillips Screws 
  • 1.4501 Pan Phillips Screws
  • 2205 DSS Pan Phillips Screw
  • Duplex Steel 1.4410 Pan Phillips Screws
  • Duplex Steel Pan Phillips Screws 
  • Duplex Steel Pan Phillips Screws 
  • Super Duplex Steel S32760 Pan Phillips Screws
  • DSS S32205 Pan Head Phillips Screws
  • Duplex Stainless Steel S31803 Pan Phillips Screws 
  • 2205 Duplex Steel Pan Phillips Screws
  • Duplex Steel Pan Phillips Screws 
  • DSS 1.4462 Pan Head Phillips Screws 
  • Duplex Steel Pan Phillips Screws 
  • UNS S32205 Pan Phillips Screws
  • 2507 Super Duplex Steel Pan Phillips Screw
  • S31803 Duplex Steel Pan Phillips Screws
Cone Point Grub Screws

Duplex Steel Cone Point Grub Screws

  • SDSS Cone Point Grub Screw
  • DSS Oval Grub Screw
  • Super Duplex S32760 Cone Point Grub Screws
  • Duplex S32205 Cone Point Grub Screws 
  • Duplex Steel S31803 Cone Point Grub Screws
  • SDSS S32750 Cone Point Grub Screw 
  • Duplex Steel S32205 Cone Point Grub Screws 
  • Super Duplex Cone Point Grub Screws 
  • DSS Cone Point Grub Screws 
  • 1.4462 Cone Point Grub Screws
  • 2205 Duplex Cone Point Grub Screw
  • Super Duplex Stainless Steel 1.4410 Cone Point Grub Screws
  • Duplex Steel Cone Point Grub Screws 
  • Super Duplex Steel 2507 Cone Point Grub Screws
  • DSS S31803 Cone Point Grub Screws
  • Duplex Steel S32205 Cone Point Grub Screws 
  • S32205 Duplex Steel Cone Point Grub Screws
  • Duplex Steel Oval Grub Screws 
  • Duplex 1.4501 Cone Point Grub Screws 
  • Duplex Stainless Steel Cone Point Grub Screws
  • UNS S32750 Cone Point Grub Screws
  • S31803 Duplex Steel Cone Point Grub Screw
  • 2205 Duplex Steel Cone Point Grub Screws
Allen CSK Screws

Duplex Steel Allen CSK Screws

  • Duplex Allen CSK Screw
  • Super Duplex S32750 Allen CSK Screws
  • DSS S31803 Allen CSK Screws 
  • Duplex Steel S32205 Allen CSK Screws
  • Duplex S31803 Allen CSK Screw 
  • Duplex Steel S31803 Allen CSK Screws 
  • Duplex Steel Allen CSK Screws 
  • DSS Allen CSK Screws 
  • 1.4462 Allen CSK Screws
  • 2205 DSS Allen CSK Screw
  • Super Duplex Steel 1.4410 Allen CSK Screws
  • Super Duplex Steel S32760 Allen CSK Screws
  • SDSS 2507 Allen CSK Screws
  • Duplex Stainless Steel S32205 Allen CSK Screws 
  • 2205 Duplex Steel Allen CSK Screws
  • Duplex Allen CSK Screws 
  • SDSS 1.4501 Allen CSK Screws 
  • UNS S32205 Allen CSK Screws
  • 2507 Super Duplex Stainless Steel Allen CSK Screws

CONTACT US TO GET A QUICK QUOTE

If you require any further information, Please do not hesitate to contact us.

Ready Stock Of Duplex Steel Screws

  • Duplex Steel Self Tapping Screws
  • Duplex Steel S31803 wood Screws
  • Duplex Steel 2205 Mirror Screws
  • S31803 Duplex Steel Flange head Screws 
  • SDSS S32760 Screws 
  • Duplex Steel Binding Head Screws 
  • DSS Screws 
  • SDSS 1.4501 flat Screws 
  • Super Duplex Steel S32760 Screws
  • Duplex Stainless Steel S32205 Screws
  • 1.4410 Concrete Screws
  • DSS S32205 Screws 
  • Duplex Steel CSK Philips Screw
  • Duplex S32205 Screws 
  • Duplex Steel 2205 Screws 
  • UNS S31803 Round Head Screws
  • Super Duplex S32750 Screws 
  • Super Duplex Steel 2507 Screws
  • Type of Duplex Steel Screws 
  • 2507 Duplex Steel Screws Dimensions
  • Duplex Deck Screws
  • Super Duplex Stainless Steel 1.4462 Screws 
  • S32750 Super Duplex Steel Star Head Screws Grades 
  • Duplex S31803 Pan Head Screws
  • DSS Screws 
  • Check S31803 Duplex Steel Screws Sizes
  • Large Range of Duplex Stainless Steel Screws Grade 2205
  • Duplex Steel Screws Weight Chart
  • Duplex Steel Metric Hex Head Screws 
  • S32205 Duplex Steel Screws 
  • Duplex Stainless Steel Industrial Screws Application
  • Duplex Steel Raised Countershunk Head Screws
  • Super Duplex Steel 2507 Screws
  • SDSS 1.4410 External Screws 
  • DSS 2205 Dome Screws 
  • Duplex Steel truss Screws Standard
  • Duplex Steel Sentinel Screws 
  • S32760 SDSS Screws 
  • S31803 Duplex Self-tapping Screws Exporter
  • Super Duplex Steel 1.4501 2 hole Head Screws
  • S32205 Duplex Steel Screws 
  • Grade 2205 Metric Duplex Steel Screws 
Oil and Gas Industry
Power Generation Industry
Chemical Industry
Food Processing Industry

We Serve Application Industry

Countries We Export To

Puerto Rico, Algeria, New Zealand, Kuwait, Serbia, Spain, Oman, Iran, Romania, Ireland, Chile, United Kingdom, India, Mongolia, Russia, Kazakhstan, Egypt, Kenya, Finland, Belgium, Angola, Denmark, Ghana, Argentina, Mexico, Qatar, Lithuania, Trinidad & Tobago, Venezuela, Hungary, United Arab Emirates, Saudi Arabia, Mexico, Tibet, Costa Rica, Australia, Colombia, Bolivia, Zimbabwe, Bhutan, Morocco, Japan, Bulgaria, Brazil, Sri Lanka, Lebanon, Afghanistan, Poland, Germany, Ukraine, South Africa, Austria, Norway, Taiwan, Netherlands, Vietnam, Iran, Thailand, Greece, Slovakia, Israel, Poland, Nigeria, Czech Republic, Gabon, Turkey, United States, Nigeria, Philippines, Ecuador, Hong Kong, Tunisia, Yemen, Canada, Chile, Bahrain, Iraq, France, Indonesia, Jordan, Peru, Namibia, China, Libya, Italy, Belarus, Bangladesh, Azerbaijan, Estonia, Gambia, Nepal, Pakistan, South Korea, Macau, Switzerland, Croatia, Singapore, Malaysia, Portugal, Sweden.

Cities We Supply

Hanoi, Karachi, Jaipur, Abu Dhabi, Al Khobar, Vung Tau, Jakarta, Ludhiana, Ho Chi Minh City, Jamshedpur, Chiyoda, Petaling Jaya, Colombo, Milan, Coimbatore, Caracas, Navi Mumbai, Granada, Los Angeles, Muscat, Chennai, Kuala Lumpur, Hong Kong, Moscow, Lahore, Ahmedabad, Thiruvananthapuram, Sharjah, Indore, Rajkot, Visakhapatnam, Mumbai, Chandigarh, Jeddah, Geoje-si, Singapore, Edmonton, Tehran, Ernakulam, Ankara, London, Toronto, Nashik, Doha, Kolkata, Bogota, Mexico City, Cairo, Port-of-Spain, Haryana, Manama, Gurgaon, Houston, Algiers, Melbourne, Sydney, Pune, Aberdeen, Vadodara, Gimhae-si, Madrid, Seoul, Lagos, Faridabad, Atyrau, Nagpur, Dallas, New Delhi, Ulsan, Bengaluru, Ranchi, Howrah, Calgary, Kuwait City, Montreal, Rio de Janeiro, Bangkok, New York, Baroda, Istanbul, Brisbane, Perth, Secunderabad, Thane, Riyadh, Pimpri-Chinchwad, Courbevoie, Busan, La Victoria, Ahvaz, Dammam, Dubai, Santiago, Al Jubail, Bhopal, Hyderabad, Kanpur, Surat, Noida.