Super Duplex Fasteners
Can super duplex fasteners be used in temperatures above 300°C?
No, super duplex fasteners should not be used temperature above 300 °C. At elevated temperatures super duplex bolts loses its tensile and yield strength. It also loses its corrosion resistance properties and ductility.
| Grade | Min Temperature | Max Temperature |
|---|---|---|
| S32750 / S32760 | –50 °C to –100 °C | ~250–300 °C (max safe) |
Table of Content
Super Duplex Fasteners Specification
Super Duplex Bolt Sizes
M2 to M24
SDSS Screw Size
3/6″ to 2″
Super duplex Nuts Size
M3 – M56 | 3/6″ to 2″
Super duplex stainless Washers Size
M3 – M56 | 3/6″ to 2″
Super Duplex Stainless Machine Screws Size
M1.6 – M12
ISO Standard
ISO 898-1 / ISO 3506-1 / ISO 4762 / ISO 4014
SDSS eye bolts Thermal Conductivity
15 W/m·K at 100 °C
Super duplex heavy hex bolt Melting Point
1350 – 1450 °C
Super Duplex fasteners Length
3 mm to 200 mm
Stainless steel Super duplex threaded rod Standards
DIN 976, 931, 933, 934, 7991, 125 / ASME B18.2.1, B18.3
Stainless Super duplex self drilling screws Threads
UNF / BSW / BSF / METRIC / UNC
Custom Sizes
We are super duplex fasteners manufacturer in India in wide range of sizes and threads.
SDSS Studs Type
Tap-End / Fully or Fine threaded / Double-End
Super Duplex Heavy Hex Nuts Condition
Threading / Cold Drawn
Origin
Indian / Russian / Korean / European
Manufacturing Technique
CNC Machined / Hot forging / Cold forging
Super duplex SS Screws Thread Pitch
Coarse Threads / Fine Threads
SDSS anchor bolts Finish
Phosphating / Passivation / HDG
Super duplex hex head bolts Head Types
- Slotted hex washer
- Slotted Drive
- Phillips Drive
- Button head
- Hex washer head
- Socket cap head
- Flat
Steel Super duplex Bolt Drive Style
- Cross
- Truss
- Torx
- Round
- Hex
- Oval
- Pan
SDSS screws Thread Class
- Class 1A (Loose fit)
- 3G
- 4G
- 5 ONF
- Class 3A (Tight fit)
- 2G
- Class 2A (Medium fit)
Certificate
- EN 10204/3.1B
- Raw Materials Certificate
- UT and PMI Test
- 100% Radiography Test
Packaging
- Carton Box
- Wooden Pallet
- Wooden Cases
- Blister Packs
Value Added Services
- Color Coding
- Head Painting
- Laser Etching
- Head Shank Drilling
SDSS Fasteners Manufacturing Range
| Size Range | Types | Standards | Finishes | Threads |
|---|---|---|---|---|
| M6 to M100 | Bolts Nuts Screws Washers |
ASTM ASME DIN NACE ISO |
Passivation Pickling PTFE coating Electropolishing |
UNF UNC BSW Metric BSF |
Standards of Super duplex bolts
American standard
- ASTM A276
- ASTM A479
- ASME SA479 / SA276
ASME Standard
- ANSI B28.2.4
- ASME B1.5
- ASME B1.1
DIN Standard
- DIN 7991
- DIN 933
- DIN 976
We are one of the leading super duplex fasteners manufacturer in India, We stock and supply these SDSS bolts and nuts different threads, sizes and finishes.
Super duplex fasteners price list
| Product | Price in USD (100 Pcs) |
Price in Dirham (100 Pcs) |
Price in Euro (100 Pcs) |
|---|---|---|---|
| M14 X 50 MM LONG Alloy 2507 Hex Head Bolts | US $4.66 | 17.12 AED | € 4.09 |
| M20 X 110 MM Super Duplex 2507 Hex Bolts | US $9.34 | 8.19 AED | € 34.30 |
| M8 Alloy 2507 Hex Nuts | US $1.35 | 4.96 AED | € 1.18 |
Contact us at sales@rishabhsteelindustries.com to get a quote within 24 hours of Super duplex Fasteners. Reliable supplier and stockist of SDSS Studs and Bolts in Germany, UAE, Spain, Malaysia, Nigeria and Brazil.
| PREN (Pitting Resistance Equivalent Number) | 40 or higher |
|---|
Super duplex alloy hex nuts chemical composition
Carbon
0.03 max
Silicon
0.8 max
Manganese
1.2 max
Phosphorus
0.035 max
Chromium
24-26
Sulfur
0.015 Max
Nickel
6-8
Nitrogen
0.3
Molybdenum
3-5
Copper
0.5 max
SS super duplex washer mechanical properties
Tensile Strength
110-135 ksi
Proof Stress
80 ksi
Elongation
15 % min
Hardness
28 max
Super duplex steel threaded rod equivalent grade
| Standard | UNS | WNR |
|---|---|---|
| Super Duplex 2507 | S32750 / S32760 | 1.441 |
Super duplex alloy studs physical properties
| Coefficient of Expansion | Melting Point | Density | Modulus of Elasticity | Modulus of Rigidity |
|---|---|---|---|---|
| 13.5 μm/m °C (25 – 100 °C) | 1350°C | 7.8 g/cm³ | 200 kN/mm² | 77 kN/mm² |
Stainless super duplex flat washer dimensions
| Size | Dia (OD) MM |
Dia (ID) MM |
Thickness (t) MM |
|---|---|---|---|
| M8 | 17 | 8.5 | 1.6 |
| M10 | 20 | 10.5 | 1.6 |
| M12 | 27 | 14 | 2.5 |
| M16 | 33 | 18 | 3.0 |
| M20 | 37 | 22 | 3.5 |
| M22 | 44 | 24 | 4.0 |
| M24 | 50 | 26 | 4.0 |
| M27 | 57 | 30 | 4.0 |
| M30 | 60 | 33 | 4.0 |
| M33 | 60 | 36 | 4.0 |
| M36 | 72 | 39 | 4.0 |
| M39 | 78 | 42 | 4.0 |
| M42 | 84 | 45 | 7.0 |
Dimensions of Stainless steel super duplex Hex Bolt
| Size | k | s | b (if l > 200 mm) | b (if l < 125 mm) | b (if l < 200 mm) |
|---|---|---|---|---|---|
| M2 | 1.4 | 4 | - | 10 | - |
| M3 | 2 | 5.5 | - | 12 | - |
| M4 | 2.8 | 7 | - | 14 | - |
| M5 | 3.5 | 8 | - | 16 | 22 |
| M6 | 4 | 10 | - | 18 | 24 |
| M7 | 4.8 | 11 | - | 20 | 26 |
| M8 | 5.3 | 13 | - | 22 | 28 |
| M10 | 6.4 | 16 | 45 | 26 | 32 |
| M12 | 7.5 | 18 | 49 | 30 | 36 |
| M14 | 8.8 | 21 | 53 | 34 | 40 |
| M16 | 10 | 24 | 57 | 38 | 44 |
| M18 | 11.5 | 27 | 61 | 42 | 48 |
| M20 | 12.5 | 30 | 65 | 46 | 52 |
| M22 | 14 | 34 | 69 | 50 | 56 |
| M24 | 15 | 36 | 73 | 54 | 60 |
| M27 | 17 | 41 | 79 | 60 | 66 |
| M30 | 18.7 | 46 | 85 | 66 | 72 |
| M33 | 21 | 50 | 91 | 72 | 78 |
| M36 | 22.5 | 55 | 97 | 78 | 84 |
| M39 | 25 | 60 | 103 | 84 | 90 |
| M42 | 26 | 65 | 109 | 90 | 69 |
| M45 | 28 | 70 | 115 | 96 | 102 |
| M48 | 30 | 75 | 121 | 102 | 108 |
| M52 | 33 | 80 | 129 | - | 116 |
| M56 | 35 | 85 | 137 | - | 124 |
| M64 | 40 | 95 | 153 | - | 140 |
| Thread Size | Thread Pitch (mm) | Major Diameter | Tapping Drill Size |
|---|---|---|---|
| M20 | 2.5 | 20 | 17.5 |
| M16 | 2 | 16 | 14 |
| M12 | 1.75 | 12 | 10.2 |
| M10 | 1.5 | 10 | 8.5 |
| M8 | 1.25 | 8 | 5.8 |
| M6 | 1 | 6 | 5 |
| M5 | 0.8 | 5 | 4.2 |
| M4 | 0.7 | 4 | 3.3 |
| M3 | 0.5 | 3 | 2.5 |
| Bolt Size | Normal Fit [inch] | Bolt Diameter [inch] | Loose Fit [inch] | Close Fit [inch] |
|---|---|---|---|---|
| 1/4" | 0.281 | 0.25 | 0.297 | 0.266 |
| 5/16" | 0.344 | 0.3125 | 0.359 | 0.328 |
| 3/8" | 0.406 | 0.375 | 0.422 | 0.391 |
| 7/16" | 0.469 | 0.4375 | 0.484 | 0.453 |
| 1/2" | 0.562 | 0.5 | 0.609 | 0.531 |
| 5/8" | 0.688 | 0.625 | 0.734 | 0.656 |
| 3/4" | 0.812 | 0.75 | 0.906 | 0.781 |
| 7/8" | 0.938 | 0.875 | 1.031 | 0.906 |
| 1" | 1.094 | 1 | 1.156 | 1.031 |
| 1-1/8" | 1.219 | 1.125 | 1.312 | 1.156 |
| 1-1/4" | 1.344 | 1.25 | 1.438 | 1.281 |
| 1-3/8" | 1.5 | 1.375 | 1.609 | 1.438 |
| 1-1/2" | 1.625 | 1.5 | 1.734 | 1.562 |
| #0 | 0.076 | 0.06 | 0.094 | 0.067 |
| #2 | 0.102 | 0.086 | 0.116 | 0.094 |
| #4 | 0.128 | 0.112 | 0.144 | 0.12 |
| #5 | 0.156 | 0.125 | 0.172 | 0.141 |
| #6 | 0.17 | 0.138 | 0.185 | 0.154 |
| #8 | 0.196 | 0.164 | 0.213 | 0.18 |
| #10 | 0.221 | 0.19 | 0.238 | 0.206 |
Super duplex SS heavy hex bolts Surface Finish
Benefits of Super duplex stainless steel fasteners
Super duplex nuts and bolts Applications
Are the SDSS carriage bolts hot forged or cold formed?
Super duplex Carriage bolts can be manufactured using both hot forged and cold forged technique. But Cold forging is preferred over hot forging due to several reason such as strength, precision, and cost effectiveness. For large scale manufacturing of these bolts cold forging is solid choice.
Lead Time of Super Duplex Fasteners in different contries
| Stock Status | Estimated Lead Time |
|---|---|
| In Stock | 2–7 days |
| Made to Order | 2–4 weeks |
We are stockist of super duplex fasteners and can ship urgent demands within 2 days.
Shipping Estimates
| Location | Time |
|---|---|
| Middle East & Asia | 5–10 days via air 10–20 days by sea |
| Europe | 10–15 days by air 20–30 days by sea |
| North America | 7–12 days by air 25–35 days by sea |
Super Duplex bolts
SS Super duplex hex bolts
Super Duplex Stainless Steel square bolts
Super duplex SS heavy hex bolt
Super duplex steel eye bolts
SDSS anchor bolts
Super duplex stainless nuts
SDSS Super duplex stainless steel hex nuts
Steel Super duplex heavy hex nuts
Stainless steel Super duplex lock nut
Stainless Super duplex flange lock nut
Super duplex alloy square nut
Steel Super duplex screw
Super duplex SS socket head cap screw
Super Duplex self tapping screws
Stainless Super duplex self drilling screws
Super duplex alloy hex cap screws
Super duplex stainless socket cap screws
Super Duplex Stainless Steel machine screws
SDSS Super duplex stainless steel wood screws
Stainless Super duplex washer
Stainless steel Super duplex flat washer
Steel Super duplex plain washer
Super duplex stainless countersunk washer
SS Super duplex studs
SDSS stud bolt
Stainless steel Super duplex threaded rod
Super duplex steel threaded stud
Super duplex SS double end stud bolts
Super Duplex fully threaded studs
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