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Duplex Steel UNS S31803, S32550, S32750, S32205, S32760 Fasteners Nut
Duplex Steel UNS S31803, S32550, S32750, S32205, S32760, Alloy 2205, F60, F51, F61, F55, F53 - Stainless Steel Fasteners Flange Lock Nuts : Agent, Exporter, Dealer, Distributor, Stockist, Stockholder and Supplier in India :
- We at MD Exports LLP is known for guaranteed fast delivery of the Duplex 2205 Fasteners to South Africa, West African Countries, Russia& in entire Gulf Countries. The main reason being we have an excellent warehousing and storage facilities in India,UAE,Korea& Gauteng(South Africa).They are made ready as per the urgent requirements of the customers. The Duplex Steel 2205 Fasteners are manufactured to sustain very high pressure and product warranty.
- Lot of emphasis is placed on the packaging. The Duplex Steel 2205 Fasteners are packed in wooden corrugated boxes foiled in plastic wraps and bubble wraps.
- Duplex Steel 2205 Fasteners are offered with a NACE 3.1 Certification, Mill Test Certification and ISO 17025 Standards by a Government of India approved Laboratory. Positive Material Identification is done on all raw material procured at MD Exports LLP.
- MD Exports LLP have exported Duplex Steel 2205 Fasteners to over 60 countries including Sudan, UAE, UK, Iran, Iraq, Qatar, Bahrain, Oman, Yemen, Lebanon, Jordan, Saudi Arabia, Malaysia, Indonesia, Singapore, Australia, New Zealand, USA, Canada, Mexico, Brazil, Netherlands, Germany, Italy, Spain, Serbia, Kuwait, Peru, Nigeria, Poland, South Africa, Denmark, Turkey, Egypt, Venezuela, Kuwait, Madagascar, Angola& , Srilanka.
- The Duplex Steel 2205 Fasteners are used in Hardware, Petro-Chemical Industry, Oil and Gas Industry, Nuclear Industry, Pulp & Paper Industry, Research & Development , Mega Projects & Defense & Development Industries. In fact wing to the special grade of steel Duplex Steel 2205 Fasteners are used for all critical applications.
- Duplex Steel 2205 is the easily the most selling Grade of Duplex Steel Series due to the excellent properties and general usage in highly corrosive environment. We have more than 2 decades of experience in serving Stainless Steel & other alloys specially Fasteners, Bolts, Nuts, Studs etc. Majorly used in the Oil and Gas Industry.
- In 2016 we have ready stock of more than 50 tons of Duplex Steel 2205 Fasteners in all sizes, in Seamless and Welded to cater to immediate delivery and urgent needs of the clients. For small requirements we can dispatch the Fasteners immediately against the purchase order
FLANGE NUTS
Flange nutsare hex nuts with a bottom circular flange that is larger than their top hex section. There are two types commonly available: flange lock nuts, which are prevailing torque type lock nuts, and serrated flange nuts, which are free spinning but have a serrated bearing surface to grip the mating surface. Both types of flange nuts are described below…
Flange Lock Nuts
Flange lock nutsare one piece, all-metal prevailing torque hex flange nuts. Being all-metal, they are not subject to the temperature and chemical limitations of non-metallic (such as nylon) insert type lock nuts. The protruding circular flange increases the nut's bearing surface allowing them to be used with irregular and oversized holes. Commercial and industrial applications include lawn and garden equipment and truck manufacturing. Flange lock nuts are also called:
flange style automation lock nut, prevailing torque flange nuts, deformed thread flange lock nuts.
They are often used with 150 ksi hex flange bolts. Lock washers are not used with prevailing torque lock nuts.
By definition, "Prevailing-torque locking fasteners have a self-contained feature which creates frictional interference between the threads of the mating components." Consequently, unlike free spinning lock nuts, there is a resistance to rotation during both assembly and disassembly requiring them to be wrenched; that resistance is called prevailing torque. The advantage is that disassembly is unlikely even if preload diminishes completely because of the remaining rotational resistance. Despite the fact they are called "lock nuts," flange lock nuts are not permanently locked in place so they can be adjusted or removed after installation. However, their "locking" feature does resist loosening without the nuts being seated, which allows them to be used as stop nuts or spacers for rotating or other components.
Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).
Flange lock nut size refers to its nominal thread diameter. Typically, sizes range from about 1/4" to 1". Size is specified in inches, usually fractional rather than decimal.
Nut width and thickness vary with the size of the flange lock nut.
Flange lock nuts need to be fully engaged with the bolt/screw threads for the locking feature to be effective. To ensure full thread engagement, bolts/screws should be long enough to allow at least two full threads to extend beyond the nut face after tightening. Conversely, there should be two full threads exposed on the head side of the nut to make sure the nut can be properly tightened.
Grade G is common as are phosphate & oil and yellow zinc plated finishes. Some nuts are available from domestic (USA) manufacturers.
Flange lock nuts are reusable but only for a limited number of times because the prevailing torque declines each time the nut is used. Always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values. Do not apply standard torque values to prevailing torque lock nuts because the joint may not be tightened to the correct clamping force due to the additional friction of the locking element.
It is possible that the locking feature, which consists of deformed threads, may damage the threads of the nut or bolt. The possibility is reduced when the strength grades of the nut and bolt are compatible. For example, Grade G nuts are suggested for use with bolts having a specified minimum ultimate tensile strength of not less than 120, nor greater than 150 ksi. The chance of damage is greatest if the hardness of the mating fastener is vastly different; for example, using a non-heat treated low carbon steel bolt or screw with a heat treated nut.
Prevailing torque lock nuts are not considered suitable for long threaded assemblies because extended nut travel along the threads could damage the nut's locking feature. Therefore, the length of the bolt or screw should not be much longer than that needed to ensure full thread engagement with the nut.
Refer to IFI 100/107 and IFI 101 for specifications relating to prevailing torque lock nuts.
Serrated Flange Nuts
Serrated flange nutsare hex flange nuts with a serrated bearing surface. The nut turns freely until the serrations contact and displace material on the mating surface as the nut is tightened; less torque is needed to install than remove because the gripping action of the serrations create a ratchet-type locking feature that is resistant to vibration. If the mating surface is painted or plated, corrosion can occur if the nut's wiping action removes the surface treatment. The protruding circular flange increases the bearing surface of the nut allowing it to be used with irregular and oversized holes. Used in commercial and industrial applications, serrated flange nuts are also called:
serrated face lock nuts, serrated tooth nuts, spin lock nuts, whiz lock nuts.
Because the serrations must contact the mating surface to "lock", serrated flange nuts are not used with flat or lock washers.
Threads are standard right-hand and Unified inch coarse series (UNC, Unified National Coarse) or Unified inch fine (UNF, Unified National Fine).
Serrated flange nut size refers to its nominal thread diameter. Typically, sizes range from about #6 to 5/8". Sizes less than 1/4" are listed as a number size (the larger the number the larger the size) while sizes that are 1/4" and larger are specified in inches, usually fractional rather than decimal.
Nut width and thickness vary with the size of the serrated flange nut.
Steel, zinc plated, is a common material and finish; stainless steel is also available.
Serrated flange nuts are reusable. However, always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values.
Flange Lock Nuts Dimensions
Physical Properties of Grade G Nuts (strength equivalent to Grade 8 nuts)
Material: Medium Carbon Steel, Heat Treated
Proof Load Strength: 150,000 psi min
Rockwell Hardness: Dia 1/4 to 5/8 – Rc 24/32
Dia 3/4 to 1" – Rc 26/34
| D1 | D2 Max | H Max | M | S Max |
| M4 | - | 5.5 | - | 7.0 |
| M5 | 11.8 | 7.1 | 4.7 | 8.0 |
| M6 | 14.2 | 9.1 | 5.7 | 10.0 |
| M8 | 17.9 | 11.1 | 7.6 | 13.0 |
| M10 | 21.8 | 13.5 | 9.6 | 15.0 |
| M12 | 26.0 | 16.1 | 11.6 | 18.0 |
| M14 | 29.9 | 18.2 | 13.3 | 21.0 |
| M16 | 34.5 | 20.3 | 15.3 | 24.0 |
| M20 | 42.8 | 24.8 | 18.7 | 30.0 |
| M24 | 45.0 | 24.0 | - | 36.0 |
| Size | Width Across Flats | Total Thickness | Hex Height | Flange Diameter | Flange Thickness | Prevailing Torque | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Install | Removal | |||||||||
| F | H | J | B | K | Max | Min | ||||
| Max | Min | Max | Min | Max | Min | In-lb | Ft-lb | In-lb | Ft-lb | |
| 1/4 | 7/16 | .428 | .300 | .140 | .560 | .040 | 40 | 3.3 | 5 | .4 |
| 5/16 | 1/2 | .489 | .365 | .170 | .680 | .050 | 80 | 6.7 | 8 | .7 |
| 3/8 | 9/16 | .551 | .425 | .200 | .810 | .060 | 110 | 9.2 | 12 | 1 |
| 7/16 | 11/16 | .675 | .495 | .230 | .930 | .070 | 135 | 11.2 | 17 | 1.4 |
| 1/2 | 3/4 | .736 | .555 | .260 | 1.070 | .080 | 204 | 17 | 22 | 1.8 |
| 5/8 | 15/16 | .922 | .690 | .320 | 1.330 | .100 | 420 | 35 | 39 | 3.2 |
| 3/4 | 1 1/8 | 1.088 | .825 | .380 | 1.585 | .110 | 540 | 45 | 58 | 4.8 |
| 7/8 | 1 5/16 | 1.269 | .787 | .440 | 1.750 | .120 | 840 | 70 | 88 | 7.3 |
| 1 | 1 1/2 | 1.450 | .900 | .500 | 2.060 | .130 | 1080 | 90 | 120 | 10 |
| Duplex Steel 2205 Nuts Available Types |
Super Duplex Steel Flange Lock Nuts
duplex stainless f51 f53 f55 f44 f904l fasteners bolt nut screw stud washer bolts nuts fastener threaded rod rods screws studs washers Bolt:
M6-M64; Nut: M3-M64 ;
Threaded Rod:4-2000mm (all thread, double end thread)
Standards: DIN 931, DIN 933, DIN 934, DIN 439, DIN 835, DIN 7991, DIN 975, DIN 976, DIN 912, ISO, JIS, ANSI/ASME, BS, etc
Packing : Plywood case or wooden box
Exported countries: United States, Germany, Saudi Arabia, South Korea, Kuwait, Turkey, United Arab Emirates, Oman, Egypt, Indonesia, Malaysia, Singapore, Thailand, Sri Lanka, Russia, West Africa& Latin Americaetc
| Duplex Stainless Steel Fasteners | Super Duplex Stainless Steel Fasteners |
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Duplex Steel Flange Lock Nuts Dimensions
Duplex Flange Lock Nuts
| Alloy | Common Name | Related Specifications | ||
|---|---|---|---|---|
| European | UNS | ASTM/ASME | ||
| Alloy 2205 | SAF 2205 ® | 1.4462 | S32205 | F60 |
| 31803 | 31803 | 1.4462 | S31803 | F51 |
MD Exports LLP produces duplex fasteners in all grades of duplex, to customer specification. Duplex grades are a mixed microstructure of Austenite and Ferrite, combining the properties of both (hence the name DUPLEX). Duplex stainless steels have high corrosion resistance as well as a high strength. Mechanical properties are around double that of a typical austenitic grade such as 316. They would also normally offer higher stress cracking resistance in Chloride solutions for example. They are composed typically of 22% Chromium, 5 % nickel. Having worked with duplex since its outset, the duplex bolting continues to account for a core part of our business, along with Super duplex.
Super Duplex Steel Flange Lock Nuts Dimensions
Super Duplex Bolting
| Alloy | Common Name | Related Specification | ||
|---|---|---|---|---|
| European | UNS | ASTM/ASME | ||
| Alloy 255 | Ferralium 255 ® | 1.4507 | S32550 | F61 |
| Zeron 100 | Zeron 100 ® | 1.4501 | S32760 | F55 |
| Alloy 2507 | SAF 2507 ® | 1.4410 | S32750 | F53 |
We are proud that MD Exports LLP is the world’s number Ten bespoke producer of Super Duplex bolting. Super Duplex stainless steel grades are similar to standard duplex, but they contain a higher content of Chromium, thus enhancing the corrosion resistance and mechanical properties. MD Exports LLP produces fasteners in all three types of Super Duplex.
Super Duplex Steel Flange Lock Nuts Price
Super Duplex Steel Fasteners / Nut / Bolts / Washer / Screws
Min. Order: 1 Piece
FOB Price: US $1 to 100 (Fastener Available in Every Size)
Production Capacity: 500 Ton/Tons per Month
Tags : Super Duplex Steel Fasteners / Super Duplex Steel Nut / Super Duplex Steel Bolts / Super Duplex Steel Washer / Super Duplex Steel Screws
| Duplex Steel 2205 Nuts Available Types | |||
SURFACE COATINGS | |||||
Mirror Buffed | Hot Dipped Galvanizing | Epoxy Coating | Electro Polished | Passivation | |
Teflon Coating | Oxidized | Zinc Plating | Chrome Plating | ||
Fasteners Specialist
Origin Of Material
| Brand Name : We are Dealer, Distributor, Stockist, Stockholder and Supplier of Below Brand Products |
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| http://www.columbus.co.za : COLUMBUS in SOUTH AFRICA: Lean Duplex Steel - e.g. 2001/1.4482 / 2304/1.4362 / Standard duplex Steel e.g. 2205/1.4462. |
| http://www.sandmeyersteel.com: SANDMEYER STEEL ( USA & CANADA): Alloy 2205Duplex Stainless Steel Plates/ Alloy 2507 Duplex Stainless Steel Plate Manufacturers - |
| http://www.jindalstainless.com/ : JINDAL ( JSL INDIA ): Duplex Steel Sheet PlatesManufacturers --- |
| http://www.aalco.co.uk/: AALCO in UKStainless Steel Pipes Tubes Manufacturers -- |
| http://www.sail.co.in/: SALEM Productsin INDIA : Duplex Steel Sheet Plate Coils Manufacturers --- |
| http://www.specialsteelgroup.com/: SPECIAL STEEL LTD(UK): Duplex Stainless Steel Round Bar, Fastener Bolts Nuts & Flat Bar Manufacturers |
| http://www.pennstainless.com/: PENN STAINLESS( USA ) : Duplex Stainless Steel 2205& 2507 : Penn Stainless inventory now includes Duplex 2205 (UNS S32205 / S31803), in sheet, coil, plate, plate coil, round bar, processed flat bar and tubular products |
| http://www.nssmc.com/en/ : NIPPON STEEL & SUMITOMO METALS( JAPAN ) : Duplex Steel 2205& 2507 Sheet Plates Manufacturers --- |
| http://www.outokumpu.com/: OUTOKUMPU ( FINLAND & INDIA ) : Duplex Steel 2205 & 2507 Coil and sheet, Bar, Welded pipe & Plate Manufacturers --- |
| http://megamex.com/: MEGAMEX ( TEXAS USA ) : Mega Mex supplies LDX2101, 2205, Ferralium 255, Zeron 100 and 2507 in the form of plate, sheet, strip, bar, pipe, tubing, pipe fittings, flanges and weld wire. |
| http://www.schoeller-bleckmann.co.uk/: SCHOELLER BLECKMANN ENGLAND & DUBAI: Schoeller-Bleckmann (UK) is a major stockholder and distributor of Stainless Steel Tube, Pipe & Hollow Bar. |
| http://smt.sandvik.com/en-in/: SANDVIK ( SWEDEN & INDIA ) : Duplex stainless steels / Sandvik SAF 2507, Sandvik SAF 2707 HD, Sandvik SAF 3207 HD / TUBE, PIPE, FITTINGS AND FLANGES Manufacturers in SWEDEN |
| http://www.tiogapipe.com/: TIOGA ( USA ) : Duplex Steel Pipe 2205 S31803/ S32205, A790 / SA790, Duplex Steel 2205 S31803 / S32205 , A815 / SA815, A182 / SA182 Fittings, Duplex Flanges Duplex 2205 S31803 / S32205, A182 / SA182 Manufacturers in Houston |
| http://www.specialpipingmaterials.com/duplex/: SPECIAL PIPING MATERIAL ( UK, ENGLAND, SCOTLAND, SINGAPORE, USA, AUSTRALIA, DUBAI, BRAZIL ) : High quality exotic piping products from approved manufacturers : Seamless Duplex 2205 Pipe, Welded Super Duplex Pipe, Super Duplex (both S32760 and S32750 / 2507 Buttweld Fittings, Flanges, Forged Fittings Manufacturers |
| http://www.langleyalloys.com/ : Langley Alloys : Duplex Stainless Steels Products Manufacturers |
| http://www.rolledalloys.com/: Rolled Alloys, Inc: Duplex Stainless Steel Pipes TubesManufacturers |
Our Clients
| Products | Duplex Steel Flanges, 2205and 2507 Grades. |
| Industry We Serve | Duplex Stainless Steel Flanges Supplied Oil & Gas Industry, Petrochemical Companies, Seashore Industries, Refinery, Petroleum Refineries, Oil Refining Industry, Beverage, Water Piping Systems, Acid & Chemical Plants, Pharmacy Industry etc.. |
| Country | More Then 2700 CLIENT OFDuplex Stainless Steel Flanges in Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, USA, Brazil, Nigeria, South Africa, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrainetc.... |
| Products | Duplex Steel 2205and 2507 Pipe |
| Industry We Serve | production & transportation of Oil & Gas : Duplex 2205 Stainless Steel Pipes for Industrial Use in Architecture, Building, Construction, Transportation, Chemical, Energy, Seaports, Seashore, Catering and Process Industry. |
| Country | More Then 1900 CLIENTSof Duplex Stainless Steel Pipes & Tubes in Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, USA, Brazil, Nigeria, South Africa, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrain etc.... |
| Products | Duplex Steel TubingSupplied to |
| Industry We Serve | Heat exchangers Manufacturers & cooling pipes Manufacturers Industry. |
| Country | More Then 1700 CLIENTS OFDuplex Stainless Steel Tubing in Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, USA, Brazil, Nigeria, South Africa, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrain etc.... |
| Products | Duplex Steel Sheet & Plate |
| Industry We Serve | storage tanks manufacturers, pharmaceutical or food processing Industry, pulp and paper industry (Duplex stainless steel plate USE: Duplex stainless steel plate is often used for storage tanks. High corrosion and erosion resistance is a must for storage tanks, whether the designer wants to prevent leakage during desalinization, avoid contamination in pharmaceutical or food processing, or store chips as well as black and white liquor for the pulp and paper industry.) |
| Country | More Then 2800 CLIENTS OFDuplex Steel Plates., We Supplied Duplex Stainless Steel Plates in Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, USA, Brazil, Nigeria, South Africa, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrain etc.... |
| Products | Duplex Steel 2205& 2507 Bolts, Duplex Steel 2205& 2507 Washer, Duplex Steel 2205& 2507 Screws, Duplex Steel 2205& 2507 Nuts |
| Industry We Serve | Duplex Steel Fasteners used in Oil & Gas Industry, Petrochemical, structural & mechanical |
| Country | More Then 3200 CLIENTS OFDuplex Stainless Steel Fasteners in Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, USA, Brazil, Nigeria, South Africa, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrain etc.... |
We have exported our material to numerous countries in the world including but not limited to Kuwait, Peru, UK, Singapore, Poland, Iraq, Malaysia, Serbia, Turkey, Yemen, Australia, Lebanon, Oman, Srilanka, Egypt, Angola, Canada, Madagascar, Saudi Arabia, Indonesia, UAE, Italy, Jordan, Qatar, USA, Brazil, Nigeria, South Africa, Kuwait, Mexico, New Zealand, Netherlands, Germany, Venezuela, Iran, Denmark, Spain, Bahrain & many other countries....
OUR PRODUCTS
- Duplex Steel 2205 Butt Weld Fittings
- Duplex Steel 2205 Flanges
- Duplex Steel 2205 Bar
- Duplex Steel 2205 Forged Fittings
- Duplex Steel 2205 Pipes Tubes
- Duplex Steel 2205 Sheet Plate
- Duplex Steel 2205 Fasteners
- Duplex Steel 2205 Bolts
- Duplex Steel 2205 Nuts
- 2-H Heavy Hex Nuts
- Acorn Nuts
- Heavy Hex Nuts
- Jam Nuts
- Kep Nuts
- Nylon Insert Locknuts
- Slotted Nut
- High Nut
- Castle Nut
- Custom Nut
- Serrated Flange Nut
- Auto Locknuts
- Coupling Nuts
- Slotted Nuts
- Square Nuts
- Wing Nuts
- Flex Lock Nut
- 2 Way Lock Nut
- Cap Nut
- K Lock Nut
- T Tee Nuts
- Flange Lock Nut
- Duplex Steel 2205 Washers
- Duplex Steel 2205 Screws
- Duplex Stainless Steel Products
- Super Duplex Steel 2507 Products
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