Why Buyers Choose Ganpat Industrial Corporation For Stainless Steel 304 Screw?
Since 1997
Mumbai forging house for fasteners, bars and fittings
ISO 9001:2015
Certified quality system behind every fastener lot
ISO 14001:2015
Certified environmental management at our works
PED & Petrofac Approved
Accepted for pressure equipment and Petrofac vendor lists
MTC With Every Lot
Grade proof travels with your dispatch
Stainless Steel 304 Screw Capabilities
- 1Material Basis: 18-8 chromium-nickel austenitic steel • UNS S30400 • AISI 304
- 2Governing Standard: ASTM A193 Grade B8 • Socket heads to ISO 4762
- 3Werkstoff Nr.: 1.4301 • X5CrNi18-10 • JIS SUS304
- 4Strength Classes: Class 1 solution treated • Class 2 strain hardened
- 5Sizes: M3 To M20 in the table below • Share a drawing for special sizes
- 6Forms Supplied: Hex, socket, countersunk, shoulder, anchor, concrete and blind rivet screws
Ganpat Industrial Corporation has forged and stocked fasteners for Mumbai and export buyers since 1997. Our 304 Stainless Steel Screw range covers many head styles for daily industrial fixing needs. Austenitic Stainless Steel 304 Screws carry 18 to 20% chromium and 8 to 11% nickel. Each ASTM A193 Stainless Steel Screw follows Grade B8 limits for chemistry and minimum strength. Compact assemblies needing a tidy, flush finish suit our 304 SS Socket Head Cap Screws. Service teams pick our A193 ss 304 Machine Screw for easy panel and cover access. Builders fix facades with our Stainless Steel 304 Anchor Screw in solid masonry or slabs. Every lot ships with an MTC that records chemical and mechanical results for QA teams. Send your size list on WhatsApp or email and get a fast, size-wise quote today.
Mumbai · Fastener Manufacturer, Stockist & Exporter
A Stainless Steel 304 Screw offers high tensile strength.
Buy SS 304 Screw from a Mumbai forger. We supply hex, socket, countersunk and anchor types.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
UNS & Werkstoff
S30400
EN 1.4301, AISI 304
Chromium • Nickel
18-20% • 8-11%
18-8 austenitic chemistry
Governing Standard
ASTM A193 B8
Class 1 and Class 2
Class 1 Strength
515 MPa min
205 MPa min yield
Corrosion Resistance ASTM A193 304 SS Hex Head Screws Manufacturer in India with MTC
Stainless Steel 304 Screw Specification
Check every order against this sheet before you place it.
Material Grade
- 18-8 chromium-nickel austenitic steel
- UNS S30400 / AISI 304
- Werkstoff Nr. 1.4301
- Grade B8 in ASTM A193
Governing Standards
- ASTM A193 Grade B8
- ISO 4762 for socket heads
- ISO 3506 calls it A2
Strength Classes
- Class 1: carbide solution treated
- Class 2: strain hardened
- Class 2 reaches 125 ksi up to 3/4 inch
Head Styles
- Hex, socket cap and countersunk
- Square, panel and shoulder
- Socket set and machine
Fixing Types
- Anchor and concrete screws
- Blind rivet screws
- Fully threaded screws
Thread & Size
- Metric coarse pitch
- M3 to M20 tabled below
- Share a drawing for special sizes
Surface
- Plain finish, smooth and cleanable
- Passivation on request
Documents
- MTC with every lot
- Chemical and mechanical results
- Third-party inspection on request
304 SS Socket Head Cap Screws Dimensions
A dedicated Stainless Steel 304 Screw supplier in India delivers rust-proof fastening solutions quickly.
| Thread | Pitch | Head Dia (max) | Head Height (max) | Hex Key (nom) |
|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 3 | 2.5 |
| M4 | 0.7 | 7 | 4 | 3 |
| M5 | 0.8 | 8.5 | 5 | 4 |
| M6 | 1 | 10 | 6 | 5 |
| M8 | 1.25 | 13 | 8 | 6 |
| M10 | 1.5 | 16 | 10 | 8 |
| M12 | 1.75 | 18 | 12 | 10 |
| M16 | 2 | 24 | 16 | 14 |
| M20 | 2.5 | 30 | 20 | 17 |
304 vs 316 Stainless Steel Screw
Buyers ask this on almost every enquiry.
SS 304 Screw
- Cr 18.0 to 20.0%, Ni 8.0 to 11.0%
- No molybdenum added
- Suits food, dairy and kitchen use
- Lower cost for general service
SS 316 Screw (B8M)
- Cr 16.0 to 18.0%, Ni 10.0 to 14.0%
- Mo 2.00 to 3.00% added
- Better pick for strong chloride exposure
- Same Class 1 minimum strength
Types Of Stainless Steel 304 Screw We Supply
A Stainless Steel 304 Screw supplier in India stocks fasteners for general corrosion resistance.
ASTM A193 304 Stainless Steel Hex Head Screws
Hex Head
304 SS Socket Head Cap Screws
ISO 4762 / DIN 912
SS UNS S30400 Socket Set Screw
Set Screw
Stainless Steel 304 Counter Sunk Screw
SS 304 CSK Screw
A193 ss 304 Machine Screw
Machine Screw
304 SS Steel Shoulder Screw
Shoulder
Stainless Steel 304 Anchor Screw
Anchor Fix
SS 304 Concrete Screw
Masonry
Which Head Style Fits Your SS 304 Screw Job
Match the head to the tool, the surface and the load.
Hex Head
- Tightened with spanner or socket
- Suits frames and machinery
Socket Head Cap
- Hex key drive, compact head
- Suits tight counterbores
Counter Sunk (CSK)
- Sits flush with the surface
- Suits smooth panels and covers
Socket Set Screw
- Headless design
- Locks collars and pulleys on shafts
Anchor & Concrete
- Fixes into masonry and concrete
- Suits facades and rails
Panel & Machine
- Light-duty panel and cover fixing
- Easy access for service
Weekly Delivery Of Stainless Steel 304 Screw In Below Location
| Export To | Continent | Port | Shipping Time |
|---|---|---|---|
 Saudi Arabia |
Middle East | Port of Dammam | 18 Days |
 Germany |
Europe | Port of Hamburg | 27 Days |
Chemical Composition Of ASTM A193 Stainless Steel Screw
The 18-8 Chemistry
Heat analysis limits for ASTM A193 Grade B8, UNS S30400.
IronFe
Balance
ChromiumCr
18.0 – 20.0%
NickelNi
8.0 – 11.0%
ManganeseMn
2.00% max
SiliconSi
1.00% max
CarbonC
0.08% max
PhosphorusP
0.045% max
SulphurS
0.030% max
Mechanical Properties Of ASTM A193 B8 Screws
Minimum values that the A193 ss 304 Machine Screw must meet.
| Class | Diameter | Tensile (ksi) | Yield (ksi) | Elong. (%) | RA (%) | Hardness (max) |
|---|---|---|---|---|---|---|
| B8 Class 1 | All sizes | 75 (515 MPa) | 30 (205 MPa) | 30 | 50 | 223 HBW / 96 HRB |
| B8 Class 2 | Up to 3/4 in | 125 | 100 | 12 | 35 | 321 HBW / 35 HRC |
| B8 Class 2 | Over 3/4 to 1 in | 115 | 80 | 15 | 35 | 321 HBW / 35 HRC |
| B8 Class 2 | Over 1 to 1-1/4 in | 105 | 65 | 20 | 35 | 321 HBW / 35 HRC |
| B8 Class 2 | Over 1-1/4 to 1-1/2 in | 100 | 50 | 28 | 45 | 321 HBW / 35 HRC |
SS UNS S30400 Socket Set Screw Equivalent Grades
Stainless Steel WERKSTOFF NR. 1.4301 Screw
One grade, many nameplates. Match your drawing callout below.
ASTM • UNS • AISI
- ASTM A193 Grade B8
- UNS S30400
- AISI 304
EN • Werkstoff
- EN 1.4301
- Werkstoff Nr. 1.4301
- X5CrNi18-10
Japan • JIS
- SUS304
- JIS G4303
British • BS
- 304S15
- 304S31
French • AFNOR
- Z7CN18-09
ISO • China
- ISO 3506 A2
- GB 06Cr19Ni10
Physical Properties Of Stainless Steel 304 Square head Screw
Typical values for design and thermal checks.
Density
7.90 g/cm³
At room temperature
Melting Range
1400 – 1450 °C
Approximate range
Thermal Conductivity
15 W/m·K
At 20 °C
Thermal Expansion
16.0 x 10⁻⁶/K
20 to 100 °C
Specific Heat
500 J/kg·K
At 20 °C
Scaling Limit
About 700 °C
In air, continuous
Buy SS UNS S30400 Socket Set Screw with Hygienic Performance for Food Processing & Dairy Applications
304 SS Threaded Screw Industrial Applications
Smooth 304 surfaces clean fast and suit hygiene-led plants.
Food Processing Machinery
Dairy Plant Equipment
Beverage Lines
Commercial Kitchen Units
Facade & Panel Fixing
Domestic Appliances
Masonry & Concrete Fixing
Building Frames
ASTM A193 B8 Class 1 vs Class 2 Screw Selection
Pick Strength Before You Pick Size
Both classes use the same 304 chemistry. Only heat treatment and strength differ.
Class 1 Stainless Steel 304 Screw
- Carbide solution treated
- 75 ksi (515 MPa) minimum tensile, all sizes
- 30 ksi (205 MPa) minimum yield
- Hardness up to 223 HBW
Class 2 Stainless Steel 304 Screw
- Solution treated and strain hardened
- 125 ksi minimum tensile at 3/4 inch and under
- 100 ksi minimum yield at 3/4 inch and under
- Hardness up to 321 HBW
Monthly Delivery of Stainless Steel 304 Screw in below countries:
| Export to | Continent | Shipping time |
|---|---|---|
 Philippines |
Asia | 14 Days |
 Spain |
Europe | 30 Days |
 Germany |
Europe | 20 Days |
 Malaysia |
Asia | 10 Days |
304 SS Steel Shoulder Screw Testing & Inspection
A Stainless Steel 304 Screw manufacturer in India machines precise threads for secure assemblies.
Chemical Check
Confirms Cr and Ni against B8 limits
Tensile & Yield
Proof of strength class
Hardness
HBW or HRB per class
Dimensions & Thread
Gauge check on head and thread
Visual Check
Finish, marking and burr review
Third-Party Review
Arranged on request
Austenitic Stainless Steel 304 Screws Documents
Paperwork your QA team will ask for.
Mill Test Certificate
Chemical and mechanical results per lot
Every Lot
Test Report
Tensile and hardness values on request
On Request
Packing List & Invoice
Item-wise quantity and weight
With Dispatch
Inspection Report
Third-party witness for your project
On Request
Stainless Steel 304 Screw Price In India
Quote Built On Your Size List
Nickel moves prices, so rates follow the day.
Send a size-wise list. Get per-piece pricing fast.
Warehouse Locations of Partner Suppliers
| Morocco | Kenya | Gabon | Houston | Dubai | Tunisia |
| Abu Dhabi | South Africa | Nigeria | Mozambique | USA | Oman |
| Saudi Arabia | Riyadh | Dammam | Al-khobar | UAE | Al Jubail |
| Angola | Ethiopia | Egypt | Zambia | Ghana | Tanzania |
| New South Wales | Indiana | Texas | California | Algeria | Carolina |
Stainless Steel 304 Screw Frequently Asked Questions
Which grade is an ASTM A193 Stainless Steel Screw made from?
Grade B8 is the 304 grade in ASTM A193. It is carbide solution treated.
What are the UNS and Werkstoff numbers of a 304 SS Threaded Screw?
UNS S30400 and Werkstoff Nr. 1.4301, also written X5CrNi18-10.
Which class should I choose for a Stainless Steel 304 Square head Screw?
Class 1 is solution treated, with 75 ksi minimum tensile in all sizes. Class 2 is strain hardened and reaches 125 ksi up to 3/4 inch.
Is an SS 304 Panel Screw suitable for food and dairy plants?
Yes. Grade 304 is widely used in dairy and food equipment. Choose 316 for heavy chloride exposure.
What is the HSN code for Stainless Steel 304 Blind Rivet Screws?
Screws, bolts and rivets fall under HSN 7318, taxed at 18% GST. Confirm the 8-digit code for your exact item.
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