What Makes Ganpat Industrial the Top Global Choice for Stainless Steel 317L Washers ?
Higher Molybdenum Alloy
3–4% Mo for superior pitting & crevice resistance
Every Profile, One PO
Plain • Spring • Fender • Sealing – single dispatch
Mill-Traceable Heats
UNS S31703 raw material with full heat traceability
Inspected Before Dispatch
PMI • dimensional • salt spray – on every lot
Container-Ready Stock
Standard sizes packed & ready to ship this week
Stainless Steel 317L Washers Facet
- 1Size Range: M2 to M36 • OD 5 mm to 66 mm • per ASTM A240
- 2Standards: ASME B18.22.1, DIN 125, DIN 127, ISO 7089, ISO 7090, ISO 3506
- 3Common Grades: UNS S31703, EN 1.4438, AISI 317L, Werkstoff Nr. 1.4438
- 4Finish: Bright Annealed, Passivated, Polished, Natural Mill Finish
- 5Origin: Indian origin • Japanese origin • European origin
- 6Type: Plain, Spring, Fender, Sealing, Flat, Lock, Conical, Square, Machine, Star, Slot
Or call our Mumbai office: +91 22 6743 7134 • Fast dispatch on ready stock sizes
Ganpat Industrial manufactures high performance UNS S31703 Washer and EN 1.4438 Washer products built to withstand severe acidic processes. Every ASTM A240 Washer and AISI 317L Washer delivers maximum pitting resistance for demanding global engineering applications.
Mumbai · Forging Manufacturer & Exporter
Stainless Steel 317L Washers Engineered For Chloride, Not Just Corrosion
Ganpat Industrial forges and exports Stainless Steel 317L Washers to buyers who need more than standard 316 protection – pulp & paper lines, flue-gas desulphurisation units, offshore skids and chemical process plants across India, the Middle East and Africa.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
Reliable UNS S31703 Lock Washers Manufactured and Supplied by a Leading Company in India Offering Reliable Specification with Accurate HSN Code Details
Specification Of Stainless Steel 317L Washers
SS 317L Fender Washer Size Range
- ID: M2 – M36
- OD: 5 – 66 mm
- Thickness: 0.3 – 5 mm
- Custom sizes on drawing
SUS 317L Flat Washer Governing Standard
- ASME B18.22.1
- DIN 125 / DIN 127
- ISO 7089 / 7090 / 7091
- ISO 3506 (A4-70)
AISI 317L Star Washer Production Route
- Precision Blanking
- CNC Punching
- Cold Forming (Spring/Lock)
- Deburring & Tumbling
EN 1.4438 Square Washer Surface Finish
- Bright Annealed
- Passivated (ASTM A967)
- Polished
- Natural / Mill Finish
UNS S31703 Countersunk Washer Material Grade
- UNS S31703
- EN 1.4438
- AISI 317L
- ASTM A240
Werkstoff Nr. 1.4438 Split Washer Molybdenum Content
- 3.00 – 4.00% Mo
- Higher than SS 316
- Extra pitting resistance
- Low-carbon (≤0.03% C)
SUS 317L Sealing Washer Testing
- PMI Testing
- Salt Spray Test
- Dimensional Check
- Third-Party Inspection
ASME B18.22.1 Slot Washer Documentation
- Mill Test Certificate 3.1
- NABL Lab Report
- Packing List
- Certificate Of Origin
SS 317L Flat Washer Origin
- Indian Origin
- Japanese Origin
- European Origin
- Traceable To Heat Number
Types Of SS 317L Washers
SS 317L Plain Washers
ASME B18.22.1
SUS 317L Spring Washers
DIN 127
AISI 317L Fender Washers
Wide OD
UNS S31703 Flat Washer
ISO 7089
EN 1.4438 Lock Washer
EN 1.4438
ASTM A240 317L Conical Washer
DIN 6796
AISI 317L Sealing Washer
Bonded Seal
Stainless Steel 317L Square Washer
UNS S31703
Need A Custom SS 317L Washer Type Or Size?Share your drawing – get a factory-price quote within 24 hours.
Trusted EN 1.4438 Spring Washer Kept Ready in Ex Stock with Verified Dimensions and Size Chart for Quick Delivery.
AISI 317L Flat Washers Dimensions
| Screw Size | Inner Ø (d1 min) | Outer Ø (d2 max) | Thickness (s) |
|---|---|---|---|
| M6 | 6.4 | 12 | 1.6 |
| M8 | 8.4 | 16 | 1.6 |
| M4 | 4.3 | 9 | 0.8 |
| M5 | 5.3 | 10 | 1.0 |
| M10 | 10.5 | 20 | 2.0 |
| M12 | 13.0 | 24 | 2.5 |
| M16 | 17.0 | 30 | 3.0 |
| M20 | 21.0 | 37 | 3.0 |
| M24 | 25.0 | 44 | 4.0 |
SUS 317L Fender Washers Size Chart
| Metric Size | Nearest Imperial | ID (mm) | ID (inch) |
|---|---|---|---|
| M6 | 1/4″ | 6.4 | 0.252″ |
| M8 | 5/16″ | 8.4 | 0.331″ |
| M10 | 3/8″ | 10.5 | 0.413″ |
| M4 | No. 8 | 4.3 | 0.170″ |
| M5 | No. 10 | 5.3 | 0.209″ |
| M12 | 1/2″ | 13.0 | 0.512″ |
| M16 | 5/8″ | 17.0 | 0.669″ |
| M20 | 3/4″ | 21.0 | 0.827″ |
SS 317L Vs SS 316L Washer
SS 316L Washer
- Molybdenum Content: ≥ 2.0%
- Tensile Strength: ≥ 485 MPa
- Yield Strength: ≥ 170 MPa
- Fits most marine & food-grade jobs
SS 317L Washer
- Molybdenum Content: ≥ 3.0%
- Tensile Strength: ≥ 515 MPa
- Yield Strength: ≥ 205 MPa
- Better fit for pulp/paper & FGD service
INOX 317L Star Washers Weight Chart
| Screw Size | Weight / Pc (g) | Approx Pcs / Kg |
|---|---|---|
| M4 | 0.31 | ~3226 |
| M5 | 0.45 | ~2222 |
| M6 | 1.04 | ~962 |
| M8 | 1.86 | ~538 |
| M10 | 3.64 | ~275 |
| M12 | 6.39 | ~156 |
| M16 | 11.52 | ~87 |
| M20 | 17.49 | ~57 |
| M24 | 32.95 | ~30 |
UNS S31703 Spring Washers Chemical Composition
ChromiumCr
18.00–20.00%
NickelNi
11.00–15.00%
MolybdenumMo
3.00–4.00%
ManganeseMn
≤ 2.00%
SiliconSi
≤ 0.75%
CarbonC
≤ 0.030%
PhosphorusP
≤ 0.045%
SulphurS
≤ 0.030%
NitrogenN
≤ 0.10%
IronFe
Balance
EN 1.4438 Lock Washers Mechanical Properties
Top Stainless Steel 317L Washers Supplier in India featuring high-temperature mechanical properties
Tensile Strength
≥ 515 MPa
Load Bearing
Yield Strength (0.2%)
≥ 205 MPa
Design Limit
Elongation (50mm)
≥ 35%
Ductility
Hardness
≤ 217 HB / 95 HRB
Wear Resistance
Ordering For A Chemical Or FGD Project?Send your BOQ – factory price, MTC 3.1, dispatch same week.
AISI 317L Split Washers Price List
◆Order Quantity
◆Type (Plain / Spring / Fender)
◆Finish & Testing
Get a live SS 317L Washer quote todayFactory price, ready stock on standard sizes, and no minimum order penalty on repeat buyers.
Werkstoff Nr. 1.4438 Slot Washers HSN Code
HSN Heading
7318
Screws, bolts, nuts & washers of iron/steel
Plain / Flat Washer
7318 22 00
Non-threaded: other washers
Spring / Lock Washer
7318 21 00
Non-threaded: spring & lock washers
GST Rate
18%
Standard rate on stainless steel washers
Stainless Steel 317L Washers Delivered Weekly To The Following Countries
| Export To | Countries | Continent | Ports | Shipping Time (Days) |
|---|---|---|---|---|
| Vietnam | Asia | Ho Chi Minh | 10 | |
| Sri Lanka | Asia | Colombo | 9 | |
| Kenya | Africa | Mombasa | 20 | |
| Tanzania | Africa | Dar es Salaam | 22 | |
| Bahrain | Asia | Khalifa Bin Salman | 8 |
Monthly Delivery Of UNS S31703 Lock Washers To Below Countries
| Export To | Countries | Continent | Ports | Shipping Time (Days) |
|---|---|---|---|---|
| Canada | North America | Vancouver | 34 | |
| New Zealand | Australia | Auckland | 24 | |
| Turkey | Asia | Istanbul | 20 | |
| Poland | Europe | Gdansk | 27 | |
| Chile | South America | Valparaiso | 40 |
ASME B18.22.1 Square Washers Equivalent Grades
Premier Stainless Steel 317L Washers Supplier in India offering all grades and custom types
ASTM / ASME
- A240 / SA240
- A276
- A182 F317L
- A479
EN / DIN
- EN 10088-2
- 1.4438
- X2CrNiMo18-15-4
BS
- BS 1449
- 317S12 / 317S16
- BS EN 10088
JIS
- SUS 317L
- JIS G4303
- JIS G3446
IS
- IS 6911
- Grade UNS S31703
- IS 1570 (Part 5)
GB
- GB/T 20878
- 022Cr19Ni13Mo3
- GB/T 3280
Application Of Stainless Steel 317L Sealing Washers
Leading Stainless Steel 317L Washers Manufacturer in India built for demanding industrial applications
Flue Gas Desulphurisation
Pulp & Paper Bleaching Lines
Sulphuric & Phosphoric Acid Plants
Offshore & Marine Skids
Pump & Valve Assembly
Textile Dyeing & Chemical Baths
Desalination & Water Treatment
Heavy Chemical Process Structures
SS 317L Countersunk Washers Test Certificates
Mill Test Certificate 3.1
Every Stainless Steel 317L Washer dispatch is issued with an EN 10204 3.1 Mill Test Certificate, traceable to the original heat number and cross-checked against ASTM A240 chemistry and mechanical limits before it leaves the factory.
SUS 317L Plain Washers Material Testing
PMI Testing
Positive Material Identification on every lot to confirm grade & Mo content
Pitting & Salt Spray Test
Corrosion resistance verified per ASTM B117 / G48
Dimensional Check
OD, ID & thickness verified against drawing tolerance
Visual & Surface Check
Screened for burrs, pitting & finish defects
Hardness Test
Confirms annealed condition meets ASTM A240 limits
Third-Party Inspection
TPI available on request for large export orders
INOX 317L Spring Washers Documentation
NABL Lab Report
Independent chemistry & mechanical test results
On Request
Packing List
Itemised piece count, weight & carton breakup
Every Order
Certificate Of Origin
For customs clearance & import duty processing
Export Orders
Commercial Invoice
PO-matched invoice with HSN & GST breakup
Every Order
SS 317L Fender Washers Packaging
Poly Bag & Carton
Standard retail-ready packing for small & trial orders
Wooden Pallet Box
For bulk quantities & container-load shipments
Export Vacuum Pack
Moisture-sealed for long-transit sea freight & humid climates
Custom Labelling
PO number, size & heat number marked per buyer requirement
Buying In Bulk For A Project?Send your BOQ – factory price, MTC 3.1, dispatch same week.
Frequently Asked Questions
Is SS 317L Washer better than SS 316L?
316L works fine for standard marine jobs, but for high chlorides or acids, 317L’s extra moly gives you better corrosion protection.
What does the “L” in 317L mean?
The “L” denotes low carbon (≤0.03%), which reduces the risk of carbide precipitation during welding and keeps corrosion resistance intact near weld zones.
Is SS 317L Washer magnetic?
No. In the annealed, non-cold-worked state, a Stainless Steel 317L Washer is essentially non-magnetic due to its austenitic structure.
What is the minimum order quantity?
Ganpat Industrial supplies from small trial lots to full container loads – share your size and quantity for a factory-price quote.
Explore Nearby Locations For The Quickest Delivery Options
| Saudi Arabia | UAE | Oman | Nigeria | South Africa |
| USA | Algeria | Kenya | Angola | Tanzania |
| Ethiopia | Zambia | Ghana | Gabon | Morocco |
| New South Wales | Mozambique | Egypt | Tunisia |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA