Stainless Steel 304L Fasteners Snapshot
Mortec At A Glance
Established
Since 2012 • 15+ yrs experience
Manufacturing Units
2 in-house units • Taloja & Mazgaon
Stockyard Area
8,850+ sq.ft • Ready-stock inventory
Certifications
ISO 9001:2015, PED • GST, IEC & MSME
Clientele
100+ clients • India & export markets
Export Reach
19+ countries • GCC, Africa & Americas
Testing Offered
Mechanical, chemical & PMI • MTC EN 10204 3.1 & 3.2
Shipment Documents
Invoice, Packing List • COO, COI, MTC, BL & Lab Report
Table of Content
Heavy-Duty SS 304L Hex Bolts Nut Manufacturer in India For Cryogenic LNG Storage
When your project requires bolting for sub-zero LNG service, ordinary stockists aren't enough. You need traceable metallurgy backed by complete documentation for every application. That's why buyers across South Africa, UAE, Kenya and Canada choose us. Our Stainless Steel 304L fasteners provide low-carbon chemistry, resisting sensitization around weld lines. Ex-stock sizes from M6 to M64 support same-week project shipments. Every hex bolt, stud, nut and washer leaves our Mumbai facility certified. EN 10204 mill certification accompanies every fastener supplied from our manufacturing unit.
Passivation to SS 304L Bolts is available for hygienic or offshore applications. Find custom fully threaded ASTM A193 Type 304L studs and threaded rods. Direct ex-factory warehouse supply supports faster procurement and reliable project schedules. Our grade desk confirms thread series, length and finish before your PO. This ensures nothing gets delayed during inspection or final quality checks.
Stainless Steel 304L Fasteners Specification
Order direct from the manufacturer's warehouse - original MTC pack included on every dispatch, no trading layer in between.
SS 304L Fastener Size Range
- M6 to M100 (metric)
- ¼″ to 4″ (inch series)
ASTM A193 Type 304L Bolt Thread & Head
- Hex, heavy hex, socket, countersunk heads
- UNC, UNF, 8UN, metric coarse/fine thread
Stainless Steel 304L Bolts Governing Standards
- ASTM A193 / ASME SA193 (bolting)
- UNS S30403 / WNR 1.4306
UNS S30403 Fasteners Dimensional Standards
- ASME B18.2.1 (bolts & screws)
- ASME B18.2.2 (nuts)
- ASME B18.22.1 (plain washers)
WNR 1.4306 Studs Finish
- Bright, pickled & passivated
- Cold-headed or machined-from-bar
304L Fastener Testing & Documentation
- Tensile, proof load, hardness, PMI
- MTC, dimensional report, TPI on request
UNS S30403 Nut Cryogenic Suitability
- Toughness retained to cryogenic temperatures
- Preferred for LNG storage & transfer bolting
AISI 304L Threaded Rod Supporting Material
- Matching nuts, flat & spring washers
- Anti-tarnish, export-grade packing
SUS 304L Washers Manufacturing Origin
- Indian, European mills
- Origin certificate on request
Stainless Steel 304L Bolts Manufacturing Standards
Every bolt we forge is dimensionally checked against these governing codes before dispatch.
Find Custom Size Fully Threaded ASTM A193 Type 304L Studs and Threaded Rod Stock With Direct Ex-Factory Warehouse Supply
Stainless Steel 304L Fasteners Size Chart
Hex bolt dimensions follow ASME B18.2.1 for popular metric sizes; larger and inch sizes are available on mill order.
| Nominal Size | Pitch | Body Dia. Max | Width Across Flats | Width Across Corners | Head Height |
|---|---|---|---|---|---|
| M6 | 1.00 | 6.00 | 10.00 | 11.05 | 4.00 |
| M8 | 1.25 | 8.00 | 13.00 | 14.38 | 5.50 |
| M10 | 1.50 | 10.00 | 16.00 | 17.77 | 7.00 |
| M12 | 1.75 | 12.00 | 18.00 | 19.85 | 8.00 |
| M16 | 2.00 | 16.00 | 24.00 | 26.17 | 10.00 |
| M20 | 2.50 | 20.00 | 30.00 | 32.95 | 13.00 |
| M24 | 3.00 | 24.00 | 36.00 | 39.55 | 15.00 |
| M30 | 3.50 | 30.00 | 46.00 | 50.85 | 19.00 |
SS 304L Fastener Types
We manufacture and stock the full range below in Stainless Steel 304L, ready for immediate dispatch from Mumbai.
SS 304L Hex Bolt
ASME B18.2.1 • M6–M64- Full or partial thread on request
- Most-ordered fastener form
ASTM A193 Type 304L Stud Bolt
Continuous / Double-End • ¼″–4″- Pairs with heavy hex nuts
- Standard for flange bolting
304L Threaded Rod
Cut Length • M6–M48- Fully threaded, cut to order
- Used in hanger & support systems
SS 304L Spring Washer
DIN 127 • Split Type- Resists loosening under vibration
- Common on rotating equipment
304L Socket Head Cap Screw
DIN 912 • M3–M24- Allen-key drive, compact head
- Common in equipment assembly
SS 304L U Bolt
Custom Radius • Pipe Support- Made to pipe OD on request
- Supplied with plate & nuts
Stainless Steel 304L Fasteners Manufacturer In Mumbai Since 2012
Send your bolt schedule - we quote ex-stock and mill-order lead times the same day.
SS 304L Hex Nut Chemical Composition
Low-carbon 18-8 Cr-Ni alloy per ASTM A479, with ≤0.03% carbon to prevent weld-line carbide precipitation.
ASTM A193 Type 304L Bolt Mechanical Properties
As a trusted Stainless Steel 304L Fasteners Exporter, we offer strong mechanical performance and durability.
Stainless Steel 304L Fasteners Material Equivalent
UNS S30403 is equivalent across major fastener standards, all covering the same low-carbon 18-8 chemistry.
ASTM / ASME (USA)
- UNS S30403
- ASTM A193 Type 304L (Bolting)
- ASTM A479 (Bar)
- ASTM F593 (Fasteners, general)
DIN / EN (Germany)
- Werkstoff 1.4306
- EN X2CrNi19-11
- DIN EN 10088-3
- DIN EN ISO 3506-1
JIS (Japan)
- SUS304L
- JIS G4303 (Bar)
- JIS G4308 (Wire Rod)
- JIS B1180 (Bolts)
BS (United Kingdom)
- BS 304S11
- Follows EN 10088-3 (1.4306)
GOST (Russia)
- 03Х18Н11 (03Kh18N11)
AFNOR (France)
- Z2CN18-10
SS 304L Flat Washer Supply Lines To South Africa, UAE, Kenya & Canada
Container and courier-ready shipments moving out of Mumbai to these markets every month.
Johannesburg, SA
Dubai, UAE
Mombasa, Kenya
Calgary, Canada
Istanbul, Turkey
SingaporeSS 304L Bolts Exporter In India Shipping To Vietnam & Beyond
Container-ready pricing for Southeast Asia, GCC and African ports within 48 hours.
SS 304L Bolt Tightening Torque Chart
Recommended torque for lubricated A2-70 bolts ($K \approx 0.2$). Use anti-seize to prevent galling-never tighten dry.
| Thread Size | Pitch (mm) | Tensile Stress Area (mm²) | Torque (Nm) |
|---|---|---|---|
| M6 | 1.00 | 20.1 | 9.4 |
| M8 | 1.25 | 36.6 | 22.8 |
| M10 | 1.50 | 58.0 | 45.2 |
| M12 | 1.75 | 84.3 | 78.9 |
| M16 | 2.00 | 157.0 | 195.9 |
| M20 | 2.50 | 245.0 | 382.2 |
| M24 | 3.00 | 353.0 | 660.8 |
INOX 304L Nuts Proof Load & Tensile Strength Chart
It depends on manufacturing: cold-headed bolts are A2-70, whereas machined studs and threaded rods are A2-50.
| Thread Size | Stress Area (mm²) | A2-70 Proof Load (kN) 450 N/mm² proof stress | A2-50 Proof Load (kN) 210 N/mm² proof stress |
|---|---|---|---|
| M6 | 20.1 | 9.0 | 4.2 |
| M8 | 36.6 | 16.5 | 7.7 |
| M10 | 58.0 | 26.1 | 12.2 |
| M12 | 84.3 | 37.9 | 17.7 |
| M16 | 157.0 | 70.7 | 33.0 |
| M20 | 245.0 | 110.3 | 51.5 |
Working To A DIN, JIS Or BS Fastener Reference?
Tell us your callout and we cross-match the ASTM equivalent before we quote.
DIN & ISO Standards For SS 304L Fasteners
European and Commonwealth buyers ordering to a DIN reference can match their callout against the table below.
| DIN Standard | Fastener Type |
|---|---|
| DIN 931 | Hex Bolt, Partial Thread |
| DIN 933 | Hex Bolt, Full Thread |
| DIN 912 | Hex Socket Head Cap Screw |
| DIN 934 | Hex Nut |
| DIN 125 | Plain Washer |
| DIN 127 | Spring Washer |
| DIN 975 | Threaded Rod (Studding) |
| DIN 976 | Stud Bolt |
AISI 304L Threaded Rod Surface Finish Options
As a Stainless Steel 304L Fasteners Manufacturer in India, we provide excellent surface finish and corrosion resistance.
Clean & Degrease
Remove cutting oils and swarf per ASTM A380 practice.
Acid Passivation
Nitric or citric acid bath per ASTM A967 removes free iron.
Rinse & Neutralize
Thorough rinse prevents acid residue attacking the surface.
Verify
Water-soak, high-humidity or ferroxyl test confirms passivity.
ASTM A193 Type 304L Supplier In Ahmedabad, NACE MR0175 Compliant
Sour-service and offshore buyers get compliance documentation with every batch.
Stainless Steel 304L Fasteners Applications
Industries that commonly specify 304L bolting - and why buyers choose us as their fasteners supplier.
How Fast Your SS 304L Fasteners Leave Mumbai ?
Select a freight mode post-PO/payment; transit figures are estimates that vary by destination port.
Ex-Stock Dispatch
Ready-stock sizes packed and handed to the carrier in 2–4 working days
Sea Freight
Lowest per-kg freight cost, typically 2–5 weeks depending on the receiving port
Air Freight
4–8 days door-to-door for urgent shutdown or breakdown bolting orders
Country-Specific ETA
Give us your destination city and we'll confirm a firm delivery window
ASTM A193 Type 304L Hex Bolts Testing & Certification
As a leading Stainless Steel 304L Fasteners Supplier in India, we are offering quality fasteners with reliable testing.
Stainless Steel 304L Fasteners Price Factors
Four variables move the per-kg or per-piece price most.
304L Stainless Steel Hex Nut Supply References
A sample of recent dispatches across our GCC, African and North American customer base.
M12 SS 304L Hex Bolts - LNG Storage Tank Cladding
MTC EN 10204 3.1, passivated finish.
Cryogenic Tank Contractor, UAE
DUBAI, UAEM16 ASTM A193 Type 304L Studs - Desalination Plant Piping
Heavy hex nuts, PMI tested.
Water Treatment EPC, South Africa
JOHANNESBURG, SOUTH AFRICAM10 SS 304L Threaded Rod - Cold Storage Structural Support
Cut length, full traceability.
Cold Chain Contractor, Kenya
MOMBASA, KENYAM8 SS 304L Socket Head Cap Screws - Process Skid Assembly
Bright finish, dimensional report.
Equipment Fabricator, Canada
CALGARY, CANADATop Export Countries
UAE
South Africa
Kenya
Canada
Turkey
Singapore
United Kingdom
Germany
Thailand
Italy
Stainless Steel 304L Fasteners FAQs
Quick answers to the questions buyers ask us most before placing an order.
What sizes are available in 304L Stainless Steel Hex Nut?
Hex bolts and studs from M6 to M64 (1/4 inch to 2-1/2 inch), with matching nuts and washers held ex-stock in the most-ordered sizes.
What is the price basis for INOX 304L Nuts?
Price is quoted per kg or per piece against size, thread length, quantity and testing level - share your bolt schedule for a firm number.
What is the difference between 304 and 304L Fasteners?
304L carries a 0.03% carbon ceiling against 0.08% in standard 304, cutting the risk of weld-line carbide sensitization in welded assemblies.
Do SS 304L Fasteners need passivation before use?
Yes for critical or hygienic service - passivation per ASTM A967 removes free iron left by machining and restores the protective oxide layer.
Do you export Stainless Steel 304L Bolts to Africa and the Middle East?
Yes - we ship to ports across the GCC, Africa, Americas and Southeast Asia with full export documentation.
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