0 · at glance
Mortec At A Glance
Established
Since 2012 • 14+ yrs experience
Manufacturing Units
2 in-house units • Taloja & Mazgaon
Stockyard Area
8,850+ sq.ft • Ready-stock inventory
Certifications
ISO 9001:2015 • GST, IEC & MSME
Clientele
100+ clients • India & export markets
Export Reach
15+ countries • Africa, GCC & Americas
Testing Offered
PMI, mechanical & IGC test • MTC EN 10204 3.1 & 3.2
Shipment Documents
Invoice, Packing List • COO, COI, MTC, BL & Lab Report
Titanium-stabilized SS 409 Bolts and Nut Manufacturer in India Withstand Up To 650°C
High-temperature equipment joints, burner mountings and kiln duct joints operate hot and dry. These conditions make expensive nickel-bearing bolts unnecessary for corrosion resistance. Type 409 contains 10.50-11.75% chromium stabilized effectively with titanium additions. Buyers in Sharjah, Durban, Nairobi and Ontario choose it for furnace applications. They also specify it for silencer work at lower landed costs. We hold annealed 409 bar and rod stock at Mumbai. Our facility cold heads, rolls and machines fasteners to your drawings.
Each Stainless Steel 409 Fasteners dispatch carries complete heat-number traceability records. EN 10204 3.1 or 3.2 certification accompanies every shipment before crating. Thread gauging records are completed before fasteners leave our facility. Buying direct from a UNS S40900 fastener manufacturer simplifies technical procurement. Mill certificates, thread classes and delivery dates come from one desk. This eliminates coordination between multiple suppliers and reduces procurement delays.
01 · Specification
Stainless Steel 409 Fasteners Specification
Share the head style, thread class and coating, and we’ll provide a landed ex-Mumbai quote the same day.
SS 409 Bolts Service Temperature
- Suited to continuous dry-heat duty around 650°C
- Scaling limit confirmed against your cycle before order
409 Stainless Steel Fasteners Structure
- Ferritic and magnetic in every supplied condition
- Strength set by the anneal, not by quench hardening
UNS S40900 Screws Titanium Stabilization
- Titanium at six times carbon minimum locks the carbon
- Weld zones stay free of chromium carbide drop-out
AISI 409 Threaded Rod Tolerance Class
- Metric 6g external and 6H internal as standard
- Unified 2A and 2B classes cut on request
INOX 409 Nuts Export Compliance Papers
- Certificate of Origin and Chamber attestation
- SGS, BV or TUV witness arranged on your account
SS 409 U Bolts Marking & Packing
- Heat number laser marked on head or shank
- VCI-lined cartons on fumigated export pallets
SS 409 Hex Bolts Dimensional & Head Standards
- ISO 4014 / 4017 and DIN 931 / 933 hex heads
- ISO 4032 nuts with ISO 7089 plain washers
UNS S40900 Stud Bolts Mechanical Properties
- 380 MPa tensile and 205 MPa yield minimum
- Chemistry to ASTM A240 / A276 UNS S40900
DIN 1.4512 Washers Testing & Certification
- EN 10204 3.1 mill test certificate with every lot
- PMI, hardness and salt spray ASTM B117 on request
Upgrade Your Furnace Assemblies With Mortec UNS S40900 Screws At Direct Factory Rates From Mumbai Stock
02 · Range
SS 409 Bolts Size Chart
Our 409 bolts size chart covers standard coarse-pitch dimensions, with custom lengths and fine pitches made to drawing.
| Thread Size |
Coarse Pitch (mm) |
Hex Head Dimensions (mm) |
Stock Position |
| Width Across Flats |
Head Height |
| M3 |
0.50 |
5.5 |
2.0 |
Ready Stock |
| M4 |
0.70 |
7.0 |
2.8 |
Ready Stock |
| M5 |
0.80 |
8.0 |
3.5 |
Ready Stock |
| M6 |
1.00 |
10.0 |
4.0 |
Ready Stock |
| M8 |
1.25 |
13.0 |
5.3 |
Ready Stock |
| M10 |
1.50 |
16.0 |
6.4 |
Ready Stock |
| M12 |
1.75 |
18.0 |
7.5 |
Ready Stock |
| M16 |
2.00 |
24.0 |
10.0 |
Ready Stock |
| M20 |
2.50 |
30.0 |
12.5 |
Ready Stock |
| M24 |
3.00 |
36.0 |
15.0 |
Made To Order |
| M30 |
3.50 |
46.0 |
18.7 |
Made To Order |
| M36 |
4.00 |
55.0 |
22.5 |
Made To Order |
SS 409 Bolts Manufacturer In Mumbai Running Since 2012
Give us the drawing and the quantity, and the rate reaches your inbox before the day closes.
Request Quote Now
03 · Product Range
409 Stainless Steel Fasteners Types
Bolts, studs, nuts, washers and machined pins produced in one works, so a full 409 bolting set ships on a single certificate.
SS 409 Hex Bolts
ISO 4014 / ASME B18.2.1 • M3–M36
- Cold headed for exhaust and manifold flanges
- Fastest-moving 409 line in our stockyard
WNR 1.4512 Studs
Double-End & Full Thread • Cut To Length
- Reduced-shank option for hot flange joints
- Supplied with matched nut and washer sets
AISI 409 Threaded Rod
1 m & 3 m Lengths • DIN 975 Pattern
- Rolled thread runs true over full length
- Site-cut for duct hangers and heat shields
409 Stainless Steel Hex Nut
ISO 4032 / DIN 934 • M3–M36
- Tapped to the same lot as your bolt order
- Full, jam and flange profiles available
SUS 409 Washers
DIN 125 / DIN 127 • Flat & Spring
- Punched and deburred for flat seating
- Fender pattern for thin exhaust sheet
SS 409 U Bolts
Muffler & Pipe Clamp Duty
- Bent to your tail-pipe or duct diameter
- Saddle plate and nuts supplied as a kit
409 SS Socket Head Cap Screw
ISO 4762 / ASME B18.3
- Hex-key drive for shrouded heat shields
- Grub and set screw variants machined to order
ASTM A193 Gr 409 Dowel Pin
ASME B18.8.2 • Ground Finish
- Centreless ground for location fits
- Chamfered or domed ends as drawn
05 · High-Temperature Duty
UNS S40900 Screws For Furnace, Kiln & Flue-Gas Duty
The question our Gulf buyers open with: how hot can this bolt run before it starts to scale?
Continuous Dry HeatOxidation resistance is generally rated to around 650°C in still air.
Cyclic HeatingTitanium stabilization helps the oxide layer stay put through heat-up and cool-down.
Typical JointsBurner mountings, heat shields, kiln ducting, stack flanges and expansion joints.
When To Step UpWet chloride, acid condensate or above-650°C duty – we quote 316L, 310S or 904L instead.
06 · Grade Selection
SS 409 vs 304 vs 316 Fasteners Comparison
The first thing mining, sugar and cement buyers across Johannesburg and Durban want settled before they change grades.
Type 409 – Ferritic, Nickel-Free
- 10.50–11.75% Cr, titanium stabilized, no nickel
- Magnetic, lowest alloy cost of the three
- Best fit: dry heat, exhaust and flue-side bolting
Type 304 – General Austenitic
- 18.00–20.00% Cr with 8.00–10.50% Ni
- Non-magnetic as annealed, mid-range cost
- Best fit: general outdoor and food-plant fixing
Type 316 – Molybdenum Bearing
- 16.00–18.00% Cr, 10.00–14.00% Ni, 2.00–3.00% Mo
- Highest chloride pitting resistance and highest price
- Best fit: coastal, marine and chemical wet service
07 · Industries
409 Stainless Steel Fasteners Applications
Choose a reliable Stainless Steel 409 Fasteners Supplier in India for high-durability products for industrial applications
Automotive Exhaust & Muffler Assemblies
Furnace Doors & Heat Shields
Cement Kiln Ducting & Stacks
Flue Gas Ducts & Dust Collectors
Generator & Boiler Set Manifolds
Bus & Truck Body Fabrication
Agricultural & Sugar Mill Equipment
Heat Exchanger Shrouds & Casings
08 · Manufacturing
SS 409 Fasteners Manufacturing Process
The route every 409 lot takes from certified bar to crated fastener inside our own units.
Bar & Wire Selection409 rod checked against the mill certificate before it is cut.
Cold HeadingFerritic rod work-hardens slowly, so heads form clean at room temperature.
Hot UpsettingLarger diameters are forged hot, then cooled in still air.
Thread RollingRolled roots keep the grain flow unbroken instead of cutting through it.
CNC MachiningSpecial heads, dowel pins and drawing parts turned to size.
Cleaning & PassivationPickled or passivated to ASTM A967 before any coating step.
Gauging & DispatchThread gauged, PMI checked, marked and packed for road or sea.
Stainless Steel 409 Fasteners Exporter In India To Mersin Port, Turkey
Container lots leave our floor sealed, marked and papered for customs clearance.
Request Export Quote
09 · Composition
AISI 409 Threaded Rod Chemical Composition
Chemical Composition – UNS S40900 (% by weight, ASTM A240 basis)
Cr10.50–11.75Chromium
FeBalanceIron
Ti6×C min – 0.75 maxTitanium
Ni0.50 maxNickel
C0.08 maxCarbon
Mn1.00 maxManganese
Si1.00 maxSilicon
P0.045 maxPhosphorus
S0.045 maxSulfur
10 · Strength Data
409 Stainless Steel Hex Nut Mechanical Properties
As a trusted Stainless Steel 409 Fasteners Manufacturer in India, we offer strong mechanical performance and durability.
Annealed Condition – UNS S40900 Base Material (ASTM A240 basis)
Tensile Strength380 MPa / 55 ksi min
Yield Strength (0.2%)205 MPa / 30 ksi min
11 · Fabrication
WNR 1.4512 Studs Welding & Magnetic Response
The two checks Canadian and North American exhaust fabricators run before they release a 409 order.
Ferritic structure – 409 fasteners are magnetic in every condition
Magnetic response stays after cold heading and after welding
Titanium binds the carbon, so weld zones resist intergranular attack
409Cb, 430Ti or 309L filler chosen to suit the joint
Low heat input keeps the heat-affected zone fine grained
Not hardenable by quenching – strength comes from the anneal
12 · Transport & Body Shops
SS 409 U Bolts For Exhaust & Vehicle Body Assemblies
A steady line of repeat orders from bodybuilders and silencer shops in Nairobi, Mombasa and Kampala.
Silencer & Tail-Pipe ClampsU bolts and saddle sets bent to the pipe diameter you run.
Body Panel Fixing409 bolts replace painted mild steel that rusts through at the washer.
Genset & Manifold StudsHeat-shield and manifold studs for generator packaging shops.
East Africa DispatchMixed pallets consolidated for Mombasa and Dar es Salaam sailings.
13 · Surface Finish
SUS 409 Washers Surface Finish Options
Finish is picked for the heat cycle, the tightening torque and how the joint has to look on site.
Plain Annealed (Self Colour)
Pickled & Passivated to ASTM A967
Bright Mechanical Polish
Shot Blasted Matt
PTFE / Xylan Coated
Zinc Plated
Zinc-Nickel Coated
Phosphate Coated
Black Oxide
Heat-Resistant Aluminium Paint
EN 10204 3.1 Certified UNS S40900 Fastener Supplier In Chennai
Every carton reaching your store matches the heat number printed on the certificate.
Get Supplier Quote
14 · Turnaround
409 SS Socket Head Cap Screw Delivery Timeline
Cut-off for same-week release is the moment your signed PO and advance land with our accounts desk.
Ready-Stock Release
Stocked 409 sizes leave the Mumbai stockyard in 2–3 working days
Sea Freight (FCL/LCL)
Cheapest route for drum-packed volume, roughly 12–28 days port to port
Air Freight
Line-stoppage cover, wheels-down at most hubs inside 3–5 days
Port-Wise ETA
Name your discharge port and we come back with a dated schedule
15 · Quality
INOX 409 Nuts Testing & Certification
As a Stainless Steel 409 Fasteners Manufacturer in Mumbai, we provide reliable testing and inspection to ensure quality.
PMI (XRF) Grade Check
Tensile & Yield Test
Rockwell B Hardness
Proof Load per ASTM F606/F606M
Intergranular Attack per ASTM A763
Dye Penetrant
GO / NO-GO Thread Gauging
Salt Spray per ASTM B117
Heat & Lot Traceability
MTC EN 10204 3.1 / 3.2
Third-Party Inspection
16 · Pricing
Stainless Steel 409 Fasteners Price Factors
Four things decide where your 409 number lands – send us yours and the guesswork drops out.
Ferrochrome, Not Nickel409 carries no nickel, so the base cost tracks chrome and titanium instead.
Diameter & LengthBar weight per piece climbs fast once you cross M24.
Standard Or Made-To-DrawingCold-headed stock lines cost less per piece than CNC-turned specials.
Coating & Test ScopeXylan, salt spray or a witnessed inspection each carry their own cost.
17 · FAQs
Stainless Steel 409 Fasteners FAQs
The five questions that come up most on 409 enquiries, answered straight.
What are the differences between 316 and 409 stainless steel Nut?
SS 409 nuts are ferritic, nickel-free and low-cost, while 316 is austenitic with 16-18% Cr, 10-14% Ni and molybdenum.
Is 409 grade Stainless Steel Stud magnetic?
Yes, UNS S40900 studs stay ferritic and magnetic in both annealed and cold-formed condition.
Can 409 Stainless Steel Bolt be welded?
Yes, titanium-stabilized 409 bolts weld without post-anneal using 409Cb, 430Ti or 309L filler at low heat input.
What is the minimum order quantity and price basis for SS 409 Fasteners?
SS 409 fasteners stock sizes sell per piece and custom items per kg - send size, quantity and finish for an ex-Mumbai quote.
Do you export Stainless Steel 409 Fasteners to the UAE, South Africa and Canada?
Yes, we export SS 409 fasteners to Jebel Ali, Durban and Canadian ports with COO, MTCs and third-party inspection.