Size In Ready Stock
- Super Duplex Studs = M4 To M100
- Super Duplex Nut = M2 To M80
- Super Duplex Bolt = M1.2 To M48
- Super Duplex Washer = M2 To M24
Super duplex stainless steel fasteners is 100% corrosion resistant in saltwater environments. Super duplex bolts can withstand the harsh chemicals and acids. Alloy 25-7 stud bolt have high tensile strength 800 to 1000 MPa. Dalloyed Fasteners is a leading super duplex fasteners manufacturer in India with an IBR certification.
Table of Content
Recent Export By Dalloyed Fasteners

Dangote Refinery

Ras Tanura Refinery

Braskem

Sasol
Which 12 Test Reports Netherland Buyers Should Ask Before Buying Super Duplex Fasteners from Dalloyed Fasteners
Super Duplex Fasteners Specifications
Size In Ready Stock
Head Type of Super Duplex Bolts
Neck Type of Super Duplex 2507 Bolts
2507 Bolts Threads
Head Drive of UNS S32750 Bolts
Super Duplex Bolts and Nuts Ends Types
Super Duplex Bolts
Super Duplex Stud Bolts
Super Duplex Screw
Super Duplex Washer
Manufacturing Method
Advantages
Standard Testing
Installations
Available Packaging
Raw Material Origin
Super duplex 2507 fasteners have high 4% (molybdenum), 7% (nickel) and 25% (chromium) content. Super duplex bolts and nuts also have good yield strength. SDSS anchor bolt should be used in temperature is below than 570°F. Super duplex fasteners manufacturer in India in hot forging and CNC machining.
Super Duplex Bolts Grades

UNS S32750 Fasteners

UNS S32760 Fasteners
2507 super duplex fasteners manufactured from UNS S32750 stainless steel. Super duplex stainless steel bolt are used in petrochemicals, seawater equipment, power industry and chemical processing. Contact Dalloyed Fasteners for more information regarding our super duplex nuts, or call us +91-7666996996. ADNOC approved super duplex fasteners manufacturer in India. Dalloyed Fasteners also provides third party inspection based on the requirements of our client.
2507 Super Duplex Screws Price List
Price in US Dollar ($)
| Diameter | M6 | M8 | M10 | M12 | M14 | M16 | M20 | M22 | M24 |
|---|---|---|---|---|---|---|---|---|---|
| Length | - | - | - | - | - | - | - | - | - |
| 12 MM | - | - | - | - | - | - | - | - | - |
| 16MM | 2.55 | - | - | - | - | - | - | - | - |
| 20MM | 2.55 | 2.67 | - | - | - | - | - | - | - |
| 25MM | 2.58 | 2.78 | 2.79 | - | - | - | - | - | - |
| 30MM | 2.72 | 2.94 | 2.92 | 3.06 | 4.2 | 4.33 | - | - | - |
| 35MM | 2.84 | 3.11 | 3.06 | 3.34 | 4.28 | 4.4 | - | - | - |
| 40MM | 3.03 | 3.35 | 3.35 | 3.61 | 4.43 | 4.56 | 7.31 | 8.09 | - |
| 45MM | 3.17 | 3.55 | 3.59 | 3.87 | 4.78 | 4.92 | 7.62 | 8.31 | - |
| 50MM | 3.36 | 3.83 | 3.94 | 4.15 | 5.05 | 5.2 | 7.8 | 8.62 | 9.54 |
| 55MM | - | 3.98 | 4.07 | 4.28 | 2.2 | 5.35 | 8.15 | 8.9 | 9.87 |
| 60MM | - | 4.09 | 4.16 | 4.47 | 5.36 | 5.52 | 8.31 | 9.14 | 10.13 |
| 65MM | - | 4.16 | 4.33 | 4.6 | 5.51 | 5.66 | 8.81 | 9.52 | 10.55 |
| 70MM | - | 4.29 | 4.51 | 4.66 | 5.72 | 5.89 | 8.91 | 9.78 | 10.85 |
| 75MM | - | 4.42 | 4.7 | 4.74 | 5.86 | 6.03 | 7.1 | 9.83 | 10.91 |
| 80MM | - | 4.66 | 4.77 | 4.81 | 5.97 | 6.15 | 9.37 | 10.3 | 11.41 |
| 85MM | - | 4.91 | 4.95 | 5.04 | 6.11 | 6.28 | 9.54 | 10.63 | 11.82 |
| 90MM | - | 4.98 | 5.06 | 5.14 | 6.44 | 6.62 | 9.78 | 10.71 | 11.9 |
| 100MM | - | 5.07 | 5.26 | 5.42 | 6.77 | 6.96 | 10.13 | 11.09 | 12.32 |
For Updated Super Duplex Socket Head Cap Screw Price Email sales@dalloyedfasteners.com
2507 fasteners improved strength and corrosion resistance compared to duplex fasteners. SAF 2507 screws provide corrosion resistance and extreme strength for outdoor and indoor installations. ISO 9001 Certified Company and super duplex fasteners manufacturer in India Since 2015.
Do You Provide Mill Test Certificates with Super Duplex Bolts?
Yes, Dalloyed Fasteners Provide super duplex bolts and nuts with MTR reports as per EN 10204 3.1.
Super Duplex Bolts and Nuts Corrosion Tests
Advantages of Super Duplex Bolts
What Makes Super Duplex 2507 Fasteners Superior to Stainless Steel Fasteners?
Super Duplex Fasteners have 2x stronger yield strength than stainless steel fasteners.
UNS S32750 Hex Bolts Corrosion Resistance
| Grade | Critical Pitting Temperature | PREn |
|---|---|---|
| Super Duplex Fasteners | 185°F | 42 |
| Duplex Fasteners | 120°F | 35 |
| Stainless Steel 316L Fasteners | 64°F | 24 |
UNS S32750 fasteners known for provide pitting and crevice corrosion resistance. Super duplex bolts developed in Sweden for use in paper industry. You can save 10%-12% cost when ordering directly from super duplex fasteners manufacturer in India in ferrous materials.
Super Duplex Bolt Torque
| Nominal Diameter (in) | Threads/in | Torque in Dry |
|---|---|---|
| 1/4" | 20 - 28 | 7.4 - 8.4 ft-lb |
| 5/16" | 18 - 24 | 15.1 - 16.8 ft-lb |
| 3/8" | 16 - 24 | 26.9 - 30.4 ft-lb |
| 7/16" | 14 - 20 | 43.0 - 48.0 ft-lb |
| 1/2" | 13 - 20 | 65.6 - 73.9 ft-lb |
| 9/16" | 12 - 18 | 94.5 - 105.5 ft-lb |
| 5/8" | 11 - 18 | 130.5 - 147.8 ft-lb |
| 3/4" | 10 - 16 | 232 - 258 ft-lb |
| 7/8" | 9 - 14 | 373 - 412 ft-lb |
| 1" | 8 - 14 | 560 - 628 ft-lb |
| 1-1/4" | 7 - 12 | 975 - 1079 ft-lb |
| 1-1/2" | 6 - 12 | 1696 - 1908 ft-lb |
Super Duplex Nuts Tensile Strength
| MPa | PSI |
|---|---|
| 800 MPa | 116000 PSI |
Super Duplex Stainless Steel Fasteners Equivalent
American (UNS)
USA (Werkstoff No)
Are 2507 Super Duplex Socket Cap Screws Custom Sizes Available?
Yes, Dalloyed fasteners manufacture custom Alloy 2507 socket cap screws as per client requirement and specifications.
Can SAF 2507 Studs be Used in Seawater Applications?
Yes, Super duplex stud bolt designed for harsh chloride environments.
Super Duplex Washer Yield Strength
| PSI | MPa |
|---|---|
| 80000 PSI | 550 MPa |
Super Duplex Fasteners Chemical Composition
Hardness for Super Duplex Stud Bolt
Hardness of 2507 stud bolt is 310 Brinell (maximum).
2507 Bolts Equipment
SDSS Carriage Bolts Applications
Top 5 Benefits of Super Duplex Stainless Steel Bolt
Alloy 2507 Heavy Hex Nuts Melting Point
2507 Fasteners Physical Properties
| Physical Properties | Super Duplex Fasteners |
|---|---|
| Density | 0.28 lb/in3 |
| Thermal Conductivity | 8.7 Btu/h ft °F |
| Heat Capacity | 0.12 Btu/lb/°F |
| Electrical Resistivity | 31.5 W-in x 10-6 |
Types Of Super Duplex Bolts
Super Duplex Hex Bolt
SDSS Eye Bolts
Super Duplex Stainless Steel Heavy Hex Bolts
Super Duplex Steel Flange Bolts
Super Duplex SS Carriage Bolts
Super Duplex 2507 U Bolts
2507 Super Duplex Allen Bolts
UNS S32750 Shoulder Bolts
Super Duplex Anchor Bolt
Types Of Super Duplex 2507 Nuts
Type 2507 Hex Nuts
Inox 2507 Jam Nuts
SAF 2507 Heavy Hex Nuts
2507 Stainless Steel Coupling Nuts
Duplex SS 2507 Square Nuts
Duplex 1.4410 Acorn Nuts
Duplex S32750 Wing Nuts
EN 1.4410 Nylock Nuts
Alloy 2507 Anti Theft Nuts
SDSS 2507 Lug Nuts
1.4410 Duplex Acorn Lug Nuts
Duplex Spline Lug Nut
Types Of Super Duplex Screws
S32750 Super Duplex Socket Cap Screws
25cr SDSS Square Head Screws
2507 Button Head Screws
F53 Super Duplex Round Head Screws
2507 Stainless Steel Flat Head Screws
Duplex SS 2507 Knurled Head Screws
DIN 1.4410 Set Screws
2507 Alloy Butterfly Screws
Zeron 100 Self Drilling Screws
Alloy 2507 Thumb Screws
2507 SS Wood Screws
25cr Super Duplex Anti Theft Screws
25cr Duplex Outlet Screws
SDSS 2507 Reusable Screws
32750 Super Duplex Receptacle Screws
Types Of Super Duplex Stud Bolts
Super Duplex Bolts
Super Duplex Stainless Studs
SDSS Full Threaded Stud Bolts
Super Duplex SS Double End Stud Bolts
Super Duplex 2507 Weld Studs
2507 Super Duplex Tap End Stud Bolts
Types Of 2507 Super Duplex Washer
UNS S32750 Square Washer
Type 2507 Flat Washer
Inox 2507 Self Locking Washer
SAF 2507 Fender Washers
Duplex SS 2507 Wedge Lock Washer
Alloy 2507 Spring Lock Washer