Stainless Steel Fasteners

Your Professional Stainless Steel Fasteners Supplier

Henan Shuangzhong Intelligent Technology Co., Ltd., an expert in precision manufacturing and pipeline system solutions, was founded in 1999. We are a professional manufacturer specializing in precision machining customization, pipeline equipment and pipe fittings customization, as well as the manufacturing and processing of rubber hoses.

Custom-sized Stainless Steel Hose Clamps
Name:Custom-Sized Stainless Steel Hose ClampsBrand:SZSize：13 mm- 509 mmMaterial: 1.Stainless Steel ss201,$s303,$S304,SS316,SS410,SS4202.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C10453 .Alloy
Stainless Steel 304 Hex Bolt
Product Name: stainless steel 304 hex bolt. Material: Stainless Steel (Grade: 304). Product Specifications:. Nominal Diameter: M6-M64 (1/4-2 1/2) (customizable for larger/smaller sizes) Length:
Stainless steel heavy bolts
Product Name: Stainless steel heavy bolts. Material: Stainless Steel (Grade: 317L). Product Specifications. Nominal Diameter: M8-M72 (5/16-2 7/8) (customizable for extreme sizes). Length:
Ss Hex Head Bolts
Product Name:ss hex head bolts. Material: Stainless Steel (Grade: 316Ti). Product Specifications:. Nominal Diameter: M6-M64 (1/4-2 1/2) (customizable for special sizes). Length:10mm-600mm
Ss 321 Hex Bolts
Product name:ss 321 Hex Bolts. Material: Stainless steel 321, stabilized with titanium (Ti), excellent resistance to intergranular corrosion, strong high temperature stability. Product
ASTM 310s Hex Bolt
Product name: ASTM 310S Hex Bolt. Material: 310S stainless steel – a high chromium-nickel alloy with approximately 25% chromium and 20% nickel, delivering exceptional high-temperature stability..

Why choose us

One-Stop Customized Solutions

We are committed to providing customers with one-stop customized solutions — from design support and precision manufacturing to quality assurance — to meet the diverse needs of various industries for high-performance, high-precision, and high-reliability industrial components.

Certification

We ensure quality through comprehensive system certifications: the company has passed the ISO 9001:2015 quality management system certification and the American Petroleum Institute (API) quality certification system.

Sales Market

Our products have been successfully exported to many countries and regions around the world, including the United States, Canada, Germany, India, Malaysia, Pakistan, the United Arab Emirates, Egypt, and the Middle East. We have earned the trust and praise of overseas customers.

On-Site Quality Supervision

We dispatch professional quality inspection teams to supervise the production of steel pipe fittings and rubber hoses. From raw material entry to the shipment of finished products, we maintain strict quality control throughout the process and accommodate special customer requirements, such as product identification and packaging methods.

304 Stainless steel Hex Bolt Material Properties

Property	Specification
Material	304 Stainless Steel (AISI 304)
Chemical Composition	Cr: 18-20%, Ni: 8-10.5%, C: ≤0.08%, Mn: ≤2%, Si: ≤1%, P: ≤0.045%, S: ≤0.03%
Tensile Strength	≥515 MPa
Yield Strength	≥205 MPa
Hardness	≤201 HB (Brinell); ≤92 HRB (Rockwell)
Corrosion Resistance	Excellent in atmospheric, water, and mild chemical environments; resistant to rust and oxidation
Temperature Range	-270°C to 870°C (short-term); -196°C to 815°C (continuous service)
Magnetic Property	Non-magnetic (annealed condition)

Dimensions (Metric & Imperial)

Metric Size (M)	Thread Pitch (mm)	Hex Head Width (mm)	Hex Head Height (mm)	Length Range (mm)	Imperial Equivalent	Thread Type (Imperial)
M4	0.7	7	3.8	8-100	1/4"	UNC (1/4"-20), UNF (1/4"-28)
M5	0.8	8	4.5	10-120	5/32"	-
M6	1.0	10	5.2	12-150	3/16"	-
M8	1.25	13	6.8	16-200	5/16"	UNC (5/16"-18), UNF (5/16"-24)
M10	1.5	16	8.4	20-250	3/8"	UNC (3/8"-16), UNF (3/8"-24)

Standards & Applications

Standard Compliance	Key Features	Typical Applications
ISO 4017 (Metric)	Unified hex head design, consistent thread tolerance	Food processing equipment, marine hardware, chemical tanks
ASME B18.2.1 (Imperial)	Precise thread dimensions, high interchangeability	Architectural structures, water treatment systems, HVAC
DIN 933	Full thread option, wide size range	Medical devices, pharmaceutical machinery, outdoor furniture

Performance vs. Other Materials

Material	304 Stainless Steel	316 Stainless Steel	Carbon Steel (Galvanized)
Corrosion Resistance	Good	Excellent (saltwater)	Moderate (prone to rust)
Strength	Medium	Medium	High
Cost	Moderate	High	Low
Temperature Resistance	Good	Better	Limited
Magnetic	Non-magnetic	Non-magnetic	Magnetic

Benefits of Stainless Steel Fasteners

Corrosion Resistance: Stainless steel fasteners withstand harsh environments, providing long-term performance.

High Strength: These fasteners offer reliable strength, ensuring stability and safety.

Quality Assurance: Products are sourced from premium materials, meeting high standards.

Customization Options: Tailored solutions are available to meet specific project needs, ensuring optimal performance.

Material Specifications

Stainless steel fasteners from are made to high standards, ensuring performance and reliability. Common materials include:

AISI Standards: 304, 304L, 316, 316L

These grades offer excellent corrosion resistance and strength, suitable for various environments and applications.

ASTM Standards: A193, A194

These standards ensure the fasteners meet rigorous specifications for industrial use, available in grades 3 (501SS), 8 (304SS), and 8M (316SS).

Other Materials: 410SS, 347SS, 321SS, Alloy 2205 (Duplex)

These materials are used for specialized applications, offering unique benefits such as enhanced corrosion resistance and strength.

Understanding Stainless Steel Grades for Fasteners

This is a crucial factor; grade affects the fasteners made of stainless steel greatly. Appropriate grade selection is vital for safety and long-term dependability since the particular alloy composition impacts the mechanical characteristics, corrosion resistance, and general performance of the fastener.

Grade	Type	Key Features & Common Applications
304 (A2 / 18-8)	Austenitic	The industry’s go-to grade. It offers excellent all-around corrosion resistance at a great value. stainless steel 304 fasteners are used in construction and industry away from salt or chemicals.
316 (A4)	Austenitic	This is marine-grade stainless steel. It contains added molybdenum for elite resistance to saltwater de-icing salts and harsh chemicals. The standard for marine and chemical applications.
A193 B8	Austenitic	An ASTM standard basically SS 304 but certified for high-pressure high-temperature service in pipelines and industrial vessels.
A193 B8M	Austenitic	The ASTM equivalent of SS 316. It’s built for the same tough high-pressure service as B8 but for the most corrosive environments.
ASTM A194 Gr.8 / 8M	Austenitic	These are the nuts that match A193 B8 and B8M bolts. Using the matched pair ensures the assembly can handle the extreme demands of the job.
410	Martensitic	This grade is unique because it can be heat-treated to be very hard. This toughness makes it ideal for self-drilling screws though its corrosion resistance is less than the 300 series.
A453 Gr.660	Precipitation-Hardened	A true superalloy also called A286. It offers incredible strength at scorching temperatures up to 700°C (1300°F). It’s reserved for the toughest jobs like jet engines.

Mechanical Properties of Common SS Fastener Grades

These numbers are the foundation of safe engineering. They show how much force a fastener can take before it bends or breaks.

Grade	Tensile Strength (MPa, min)	Yield Strength (MPa, min)	Elongation (%, min)
304	515	205	40
316	515	205	40
A193 B8 (Class 1)	515	205	30
A193 B8M (Class 1)	515	205	30
A193 B8 (Class 2)	860	690	12
A193 B8M (Class 2)	860	690	12
A453 Gr.660	895	585	16

Applications and Industries: Where Stainless Steel Fasteners are Used

Almost every industrial industry depends on stainless steel fasteners, which offer necessary strength, durability, and corrosion resistance in difficult operational conditions.

01/

Construction & Infrastructure: They are the unseen champions in building facades, structural steel connections and highway guardrails.

02/

Oil & Gas / Petrochemicals: They are indispensable on offshore platforms and in pipelines where grades like A193 B8M fight off corrosion.

03/

Marine Engineering: 316 stainless steel fasteners are the undisputed kings in Marine Engineering. They’re used in everything from shipbuilding to yacht rigging.

04/

Food & Pharmaceutical Processing: The hygienic nature of stainless steel makes it the only choice for equipment in sterile environments.

05/

Renewable Energy: They hold together solar panel farms and giant wind turbines ensuring a service life of 25 years or more.

06/

Automotive & Aerospace: They are chosen for high-temp exhaust systems and critical engine bolts to handle heat vibration and corrosion.

Our Certificate

FAQ

Q: Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?

A: Yes, we can, we can provide high precision parts and make the parts as your drawing.

Q: How should I order and make payment?

A: By T/T, for samples 100% with the order;for production, 30% paid for deposit by T/T before production arrangement, the balance to be paid before shipment.

Q: What's your Delivery Time?

A: Standard parts: 7-15days Non-standard parts: 15-25days We will make the delivery as soon as possible with the guarantee quality.

Q: How to Custom-made (OEM/ODM)?

A: If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.

Q: Which mode of transport would be better?

A: In general, the production are heavy, we advice to make delivery by sea, Also we respect your views of other transportation as well.

As one of the leading stainless steel fasteners manufacturers in China, we warmly welcome you to buy high quality stainless steel fasteners for sale here from our factory. Good service and reasonable price are available.