Precision-Punched Stainless Steel Washers Built For Vibration-Proof, Corrosion-Free Joints
304 & 316 Grade Certified
Raw coil verified by spectro test before blanking begins.
DIN, ASME & IS Compliant
Every batch machined to the exact standard you specify.
Burr-Free Precision Punching
Clean edge and flat face on every stamped washer.
Lot & Coil Traceability
Each pack is linked back to its own raw material heat.
Ready Stock, Fast Dispatch
Common sizes packed and shipped without production wait time.
Stainless Steel Washers Snapshot
- 1Product Range: Plain Flat, Spring Lock, Internal Tooth, Square & Round Washers
- 2Size Range: M2 To M100, Custom On Drawing
- 3Governing Standard: ASME B18.22.1, DIN 125 & DIN 9021
- 4Form: Machined, Punched & Cold-Formed Washers
- 5Common Grades: SS 304, SS 316, SS 202 & SS 201
- 6Service Use: Construction, Roofing, Marine & General Engineering
Or call our Mumbai office: +91 22 6743 7134 • Every carton dispatched with batch-wise MTC as per EN 10204 3.1
We stock SS Plain Flat Washer and SS Square Washers on demand. Fabricators trust SS Spring Lock Washers for anti-loosening bolted joints. Stainless Steel Washers resist rust across wet, coastal and chemical environments. Roofing contractors specify SS Roofing Washers for weatherproof sheet fixing work. Our press shop supplies SS Round Washer, Punched Washer and Machined Washer grades. Every Stainless Steel Industrial Washer batch ships with lot-wise mill test certification.
Mumbai · Stainless Steel Washers Exporter
Stainless Steel Washers – Engineered For A Tight, Rust-Free Fastening Every Time.
Ganpat Industrial machines and packs SS Plain Flat Washers, Spring Lock Washers, Internal Tooth Lock Washers, Square & Round Washers for buyers who cannot risk a loose or corroded joint on construction, marine or process equipment across India, the GCC and Africa. Every batch we ship as a trusted Stainless Steel Washers Supplier In India carries lot-wise mill certification.
- ✓ISO 9001:2015
- ✓ASME B18.22.1 Compliant
- ✓DIN 125 / DIN 9021 Certified
- ✓Mill Test Certificate 3.1
- ✓Third-Party Inspection Approved
MTC Certified SS Plain Flat Washer Manufacturer in India as per ASME B18.22.1 with Full Size Chart
Stainless Steel Washers Specification
Stainless Steel Washer Material
- UNS S30400, S31600, S20100
- W. Nr. 1.4301 / 1.4401 / 1.4372
- SS 304 / 316 / 202 / 201
- ASTM A240 Grade Certified
SS Plain Washer Size
- Size: M2 – M100
- Thickness: 0.3mm – 8mm
- Standard: DIN 125 / DIN 9021
- Custom Sizes On Drawing
SS Flat Washers Testing
- PMI Testing
- Salt Spray Test
- Hardness & Dimensional Check
- Third-Party Inspection
Stainless Steel Spring Washer Finish
- Mill / Natural Finish
- Bright Polished Finish
- Electro-Polished Finish
- Passivated Finish
SS Lock Washers Documentation
- Mill Test Certificate 3.1
- NABL Lab Report
- Packing List
- Certificate Of Origin
SS Round Washer Origin
- Indian Origin
- European Origin
- Taiwan Origin
- Lot-Number Traceable
Buy DIN 125/DIN 9021 Standard Stainless Steel Industrial Washers in M2 to M100 for General Engineering
DIN 125 Stainless Steel Industrial Washers Size Chart M2 To M100
Buy Stainless Steel Punched Washer in M2 to M24 stock sizes with custom sizes on drawing.
| Size | Inner Dia (ID) | Outer Dia (OD) | Thickness |
|---|---|---|---|
| M2 | 2.2 | 5.0 | 0.3 |
| M3 | 3.2 | 7.0 | 0.5 |
| M4 | 4.3 | 9.0 | 0.8 |
| M5 | 5.3 | 10.0 | 1.0 |
| M6 | 6.4 | 12.0 | 1.6 |
| M8 | 8.4 | 16.0 | 1.6 |
| M10 | 10.5 | 20.0 | 2.0 |
| M12 | 13.0 | 24.0 | 2.5 |
| M16 | 17.0 | 30.0 | 3.0 |
| M20 | 21.0 | 37.0 | 3.0 |
| M24 | 25.0 | 44.0 | 4.0 |
Most Common Stainless Steel Washer Types We Supply
We are a leading Stainless Steel Washers Supplier in India, offering standard and drawing-based batches.
SS Machined Washer
Machined
Stainless Steel Spring Lock Washers
Spring Lock
SS Plain Flat Washer
Plain Flat
SS Square Washers
Square
Stainless Steel Spring Washers
Spring
SS Round Washer
Round
SS Plain Washer
Machined
Stainless Steel Split Washers
Spring Lock
Weekly Delivery Of Stainless Steel Washers In Below Countries
We remain a dependable Stainless Steel Washers Supplier In India for fast-track export orders.
| Export To | Continent | Shipping Time | Port |
|---|---|---|---|
Nigeria |
Africa | 30 Days | Calabar |
Argentina |
South America | 45 Days | Rosario |
Egypt |
Africa | 18 Days | Sharm El-Sheikh |
Netherlands |
Europe | 30 Days | Brouwershaven |
SS Round Washer Weight Chart Per 100 Pieces
M2 – M5 (Small)
4g – 45g
Instrument & electronic panel fixing sizes
M6 – M10 (Medium)
100g – 360g
General engineering & furniture fixing sizes
M12 – M16 (Large)
0.63kg – 1.14kg
Structural & heavy bolted flange joints
M20 – M100 (Heavy)
1.7kg & Above
Custom foundation & wind-mast bolt sizes
OD, ID & Thickness Tolerance On SS Square Washers
Outer Dia Tolerance
±0.30 mm
Checked on every punched batch
Inner Dia Tolerance
±0.20 mm
Kept tight for a snug bolt fit
Thickness Tolerance
±0.10 mm
Holds even load spread on the joint
Flatness
Max 1% OD
Free of dish, twist or burr
Stainless Steel Spring Washers Surface Finish
Mill / Natural Finish
As-rolled surface for standard duty washers
Bright Polished
High-shine surface for visible & decorative parts
Electro-Polished
Mirror-smooth surface for hygienic & food-grade use
Passivated Finish
Acid-treated layer for extra corrosion resistance
Need A Third-Party Witnessed Test Report?We coordinate SGS, Bureau Veritas or TUV inspection on request.
Chemical Composition Of Stainless Steel Washers
Reference chemistry for Stainless Steel Industrial Washers stock as per ASTM A240.
| Grades | C | Mn | Si | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| SS 304 | 0.07 | 2.00 | 0.75 | 0.045 | 0.03 | 17.5 – 19.5 | 8 – 10.5 | – | 0.10 |
| SS 304L | 0.03 | 2.00 | 0.75 | 0.045 | 0.03 | 17.5 – 19.5 | 8 – 12 | – | 0.10 |
| SS 309S | 0.08 | 2.00 | 0.75 | 0.045 | 0.03 | 22 – 24 | 12 – 15 | 0.75 | – |
| SS 310S | 0.08 | 2.00 | 1.50 | 0.045 | 0.03 | 24 – 26 | 19 – 22 | 0.75 | – |
| SS 316 | 0.07 | 2.00 | 0.75 | 0.045 | 0.03 | 16 – 18 | 10 – 14 | 2 – 3 | 0.10 |
| SS 316L | 0.03 | 2.00 | 0.75 | 0.045 | 0.03 | 16 – 18 | 10 – 14 | 2 – 3 | 0.10 |
| SS 321 | 0.08 | 2.00 | 0.75 | 0.045 | 0.03 | 17 – 19 | 9 – 12 | – | 0.10 |
| SS 347 | 0.08 | 2.00 | 0.75 | 0.045 | 0.03 | 17 – 19 | 9 – 13 | – | – |
| SS 904L | 0.02 | 2.00 | 1.00 | 0.045 | 0.035 | 19 – 23 | 23 – 28 | 4 – 5 | 0.10 |
| SS 410 | 0.15 | 1.00 | 1.00 | 0.04 | 0.03 | 11.5 – 13.5 | 0.75 | – | – |
Mechanical Properties Of SS Spring Lock Washer Grades
SS 304
520 MPa
40% Elongation Min
SS 316
560 MPa
40% Elongation Min
SS 309
585 MPa
35% Elongation Min
SS 310
515 MPa
40% Elongation Min
Stainless Steel Washers Equivalent Grade
| Stainless Steel Grade | W.Nr | UNS | JIS |
|---|---|---|---|
| 304 | 1.4301 | S30400 | SUS304 |
| 304L | 1.4307 | S30403 | SUS304L |
| 316 | 1.4401 | S31600 | SUS316 |
| 316L | 1.4404 | S31603 | SUS316L |
| 321 | 1.4541 | S32100 | SUS321 |
| 347 | 1.4550 | S34700 | SUS347 |
| 410 | 1.4006 | S41000 | SUS410 |
| 409 | 1.4512 | S40900 | SUS409 |
| 904L | 1.4539 | N08904 | SUS890L |
| 17-4 PH | 1.4542 | S17400 | SUS630 |
Manufacturing Process Of Stainless Steel Internal Tooth Lock Washers
Coil Blanking
Certified SS coil slit and fed into the press line
Punching & Piercing
Outer disc and center bore stamped in one stroke
Deburring & Tumbling
Sharp edges removed for a smooth, safe handling face
Passivation & Packing
Acid-passivated, counted and packed by size and grade
Need A Grade-Matched Chemistry Report?Share application media & load – we confirm the right grade.
Testing Methods For SS Lock Washers
Every pressed batch of Stainless Steel Washers passes strict dimensional and material checks.
Dimensional Check
OD, ID, thickness & flatness verified on every lot
Hardness Test
Rockwell reading confirms correct temper condition
Chemical Analysis
Spectrometer reading confirms grade before dispatch
PMI Testing
Handheld alloy analyzer confirms grade before packing
Salt Spray Test
ASTM B117 exposure confirms corrosion resistance rating
Visual & Burr Check
100% visual pass for finish, burr & plating quality
Hardness Rating Guide For Stainless Steel Rivet Backup Washers
SS 304 Annealed
≤ 88 HRB
Soft, easy-to-form condition
SS 316 Annealed
≤ 90 HRB
Balanced strength & corrosion life
SS 202 Hard
≤ 95 HRB
Spring-back suited for lock washers
SS 201 Hard
≤ 96 HRB
Higher stiffness for backup washers
Monthly Delivery Of Stainless Steel Washers In Below Countries
Every carton leaving our unit reflects our standing as a certified Stainless Steel Washers Manufacturer In India.
| Export To | Continent | Shipping Time | Port |
|---|---|---|---|
Saudi Arabia |
Asia | 7 Days | Jazan |
Thailand |
Asia | 7 Days | Phuket |
Application Industries Of SS Roofing Washers
Choose a leading Stainless Steel Washers Manufacturer In India for standard and custom drawing batches.
Construction & Roofing Sheet Fixing
Marine & Offshore Platform
Electrical Panel & Switchgear
Automobile & Rail Assembly
Chemical & Process Plant Piping
Furniture & Modular Fixture Fitting
Solar Mounting Structure Fixing
Sea Water Desalination Fittings
Documentation Offered With Stainless Steel Washers
Mill Test Certificate 3.1
Chemistry, mechanical results & standard reference per lot
Every Lot
NABL Accredited Lab Report
Independent chemical & mechanical verification report
On Request
Packing List & Weight Slip
Carton-wise count, gross & net weight declared
Every Shipment
Certificate Of Origin
Chamber-attested origin document for customs clearance
Export Orders
Test Certificates With SS Plain Washer Consignments
Mill Test Certificate As Per EN 10204
Each Stainless Steel Washers consignment ships with a lot-traceable 3.1 certificate covering chemistry, mechanical results and applicable standard.
SS Flat Washers HSN Code & GST Rate
HSN Code
7318
Applies to stainless steel washers & lock washers
GST Rate
18%
Standard rate on domestic SS washer supply
Export Status
Zero-Rated
LUT-based export shipments carry no GST charge
Need Invoice Help?
Ask Our Team
Share destination country for correct documentation
SS Plain Flat Washer Vs Stainless Steel Spring Lock Washers
SS Plain Flat Washer
- Spreads clamp load evenly under the nut
- Protects surface from scratch & wear
- Simple, low-cost flat disc shape
- Common on general assembly work
Stainless Steel Spring Lock Washers
- Split-ring spring resists bolt back-off
- Ideal where shock or vibration is expected
- Holds tension even after slight loosening
- Preferred on machinery & moving assemblies
Stainless Steel Washer Price Factors
Get A Line-Item Quote In 24 HoursSend grade, size, thickness and quantity for a firm price.
How To Select The Right Stainless Steel Industrial Washers
Match The Grade
Pick 304 for general use, 316 near salt water
Check Vibration Load
Choose spring or tooth lock where bolts self-loosen
Confirm Bolt Fit
Match ID to bolt size and OD to seating area
Review Environment
Add polished or electro-polished finish for outdoor use
Frequently Asked Questions
What is the price of Stainless Steel Washers?
Price depends on grade, size, thickness and order quantity; share drawing for quote.
What size range is available in SS Plain Flat Washers?
We supply SS Plain Flat Washers from M2 to M100 in stock and custom sizes.
Which HSN code applies to Stainless Steel Washers in India?
Stainless Steel Washers fall under HSN code 7318, taxed at 18 percent GST.
Is there a minimum order quantity for SS Spring Lock Washers?
No fixed MOQ; we supply small trial lots and full bulk project quantities.
What is the difference between SS Flat Washer and SS Lock Washer?
Flat washer spreads load evenly; lock washer resists loosening under vibration and movement.
We Collaborate With Traders in the Following Country
| Regions | Country |
|---|---|
| South Carolina | USA |
| North America | USA, Canada, Mexico |
| South America | Brazil, Argentina, Colombia |
| North Africa | Egypt, Morocco, Algeria |
| West Africa | Nigeria, Ghana, Senegal |
| East Africa | Kenya, Ethiopia, Tanzania |
| Middle East | Saudi Arabia, Iran, Iraq |
| South Asia | India, Pakistan, Bangladesh |
| East Asia | China, Japan, South Korea |
| Melanesia | Fiji, Papua New Guinea |
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