Stainless Steel 316H Fasteners
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Stainless Steel 316H Fasteners
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Stainless Steel 316H Fasteners are high-carbon 316 stainless steel fasteners made from UNS S31609 material. They combine the corrosion resistance of 316 stainless steel with improved high-temperature creep strength, making them suitable for pressure equipment, heat exchangers, chemical processing, petrochemical and power-generation applications.

Stainless Steel 316H Fasteners | UNS S31609 & WNR 1.4919

Stainless Steel 316H Fasteners are high-carbon austenitic stainless steel fasteners developed for applications that require excellent corrosion resistance along with reliable strength at elevated temperatures. With a controlled carbon content of approximately 0.04–0.10%, 316H offers improved creep resistance compared with conventional 316 stainless steel, making it suitable for demanding high-temperature service.

Also identified as SS 316H Fasteners, UNS S31609 Fasteners, and WNR 1.4919 Fasteners, this grade contains chromium, nickel, and molybdenum. The molybdenum content provides strong resistance to pitting and crevice corrosion, particularly in chloride-containing environments. We supply 316H bolts, nuts, stud bolts, threaded rods, screws and other precision fasteners in different sizes, dimensions, finishes and international standards.

What Are Stainless Steel 316H Fasteners?

Stainless Steel 316H Fasteners are mechanical fastening components manufactured from the high-carbon version of 316 austenitic stainless steel. The "H" designation indicates a higher controlled carbon range than standard 316 and 316L.

The addition of molybdenum improves resistance to localized corrosion, while the higher carbon content helps the material retain strength during elevated-temperature exposure. Because of these characteristics, 316H Stainless Steel Bolts and Nuts are commonly selected for equipment operating under demanding thermal and corrosive conditions.

We can supply fasteners according to the required application, dimensional standard, thread configuration, grade and inspection requirements.

Stainless Steel 316H Fasteners

Table of Contents

Types of SS 316H Fasteners We Supply

We manufacture and supply a broad range of 316H Stainless Steel Fasteners, including:

  • 316H Stainless Steel Bolts and Nuts
  • UNS S31609 Stud Bolts
  • Stainless Steel 316H Hex Bolts
  • SS 316H Heavy Hex Bolts
  • SS 316H Flange Nuts & Lock Nuts
  • SS 316H Socket Head Cap Screws
  • 316H Hex Nuts
  • 316H Washers
  • 316H SS Threaded Rod
  • ASME SA193 SS 316H Threaded Rod
  • Stainless Steel 316H Machine Screws
  • Werkstoff Nr 1.4919 Screws
  • 316H U-Bolts
  • 316H Anchor Bolts
  • Double-End Studs
  • Full-Thread Studs
  • Custom-made 316H Fasteners

Fasteners can be supplied with full or partial threads, different head configurations, thread pitches and dimensional standards depending on project requirements.

Stainless Steel 316H Fasteners Specifications

Property Details
Material Grade Stainless Steel 316H
UNS S31609
Werkstoff Number 1.4919
Material Type Austenitic Stainless Steel
Carbon 0.04–0.10%
Chromium 16.00–18.00%
Nickel 10.00–14.00%
Molybdenum 2.00–3.00%
Manganese 2.00% max
Silicon 0.75% max
Phosphorus 0.045% max
Sulfur 0.030% max
Nitrogen 0.10% max
Iron Balance

Chemical limits can vary depending on the applicable product standard. Final supplied material is manufactured and tested against the ordered specification.

Chemical Composition of SS 316H

The chemical composition of SS 316H Fasteners is an important factor behind their corrosion resistance and elevated-temperature performance.

Element Composition (%)
Carbon (C) 0.04–0.10
Chromium (Cr) 16.00–18.00
Nickel (Ni) 10.00–14.00
Molybdenum (Mo) 2.00–3.00
Manganese (Mn) 2.00 max
Silicon (Si) 0.75 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.030 max
Nitrogen (N) 0.10 max
Iron (Fe) Balance

The defining feature of 316H is its controlled higher carbon content. This differentiates it from 316L, which has a maximum carbon content of 0.030%.

Mechanical Properties of 316H Stainless Steel Fasteners

Typical room-temperature mechanical requirements for 316H-related forged material include the following values, subject to the applicable product standard and fastener specification.

Mechanical Property Typical Requirement
Tensile Strength 515 MPa min.
Yield Strength, 0.2% 205 MPa min.
Elongation 30% min.
Hardness Typically controlled according to applicable specification

The major advantage of the H grade is not simply higher room-temperature tensile strength. Its principal benefit is improved resistance to creep and strength loss during elevated-temperature service.

Standards for Stainless Steel 316H Fasteners

Standard / Specification Application
ASTM A182 F316H Stainless steel forgings and forged components
ASTM A193 Alloy and stainless steel bolting for high-temperature/high-pressure service
ASME SA193 ASME equivalent specification for bolting
ASME B18.2.1 Square and hex bolts, screws and related dimensional requirements
ASME B18.2.2 Nuts and nut dimensions
DIN Standards Metric fastener dimensions and configurations
EN / DIN Material References Material identification and dimensional requirements

ASTM A182 F316H Fasteners are generally associated with forged stainless steel components, while ASTM A193 316H Bolts and ASME SA193 SS 316H Threaded Rod relate to bolting applications where high-temperature and high-pressure service requirements are important.

The exact material and dimensional specification should always be confirmed against the project purchase order and applicable standard.

316H Fasteners Equivalent Grades

Standard Equivalent / Grade
UNS S31609
Werkstoff No. 1.4919
ASTM 316H / A182 F316H where applicable
ASME SA182 F316H / SA193 where applicable
Stainless Steel Family 316 Series
Material Type Austenitic Stainless Steel

Note: Equivalency tables are provided as a general identification guide. They should not be treated as automatic interchangeability between product standards.

316H Stainless Steel Bolts and Nuts – Sizes & Dimensions

We supply 316H Stainless Steel Bolts and Nuts in metric and imperial sizes according to customer requirements. Common configurations include hex bolts, heavy hex bolts, flange bolts, socket head cap screws, stud bolts and threaded rods.

Available Dimensions

Parameter Available Options
Diameter Metric and imperial diameters
Thread Pitch Standard and fine thread pitches
Thread Type UNC, UNF, metric coarse, metric fine, and other specified thread forms
Thread Configuration Full-thread and partial-thread configurations
Length Custom lengths as per requirement
Head & Shank Design Custom head and shank dimensions
Standards Compliance ASME, ASTM, DIN, ISO, or customer-specific specifications

Dimensional requirements can be supplied according to applicable ASME, ASTM, DIN, ISO or customer specifications.

Applications of Stainless Steel 316H Fasteners

Stainless Steel 316H Fasteners are used across industries where corrosion resistance and elevated-temperature capability are important.

Typical applications include:

  • Chemical processing equipment
  • Petrochemical plants
  • Oil and gas equipment
  • Power generation plants
  • Heat exchangers
  • Boilers and pressure equipment
  • Refineries
  • Process piping systems
  • High-temperature vessels
  • Pharmaceutical equipment
  • Food-processing equipment
  • Marine and coastal installations
  • Industrial furnaces and heating systems
  • Pumps, valves and pressure equipment

For applications involving sustained high temperatures, the fastener grade should be selected based on the actual design temperature, stress, corrosion environment and applicable code.

Why Choose High Carbon 316H Fasteners?

  • High Carbon 316H Fasteners are selected when the operating environment demands a combination of corrosion resistance and elevated-temperature performance.
  • Improved High-Temperature Performance: The controlled carbon content helps provide improved creep resistance for elevated-temperature applications.
  • Excellent Corrosion Resistance: Chromium creates a passive protective layer, while molybdenum improves resistance to pitting and crevice corrosion.
  • Suitable for Demanding Environments: 316H is suitable for applications where standard carbon steel fasteners may suffer from corrosion or where conventional stainless grades may not provide the required high-temperature performance.
  • Good Mechanical Performance: The material provides a useful combination of tensile strength, yield strength and ductility.
  • Long-Term Serviceability: Properly selected and installed 316H fasteners can provide dependable performance in demanding industrial assemblies.

316H Stainless Steel Fasteners Supplier and Stockist

As a 316H Stainless Steel Fasteners Supplier, we support industrial buyers with bolts, nuts, stud bolts, screws and threaded rods for domestic and international requirements. We understand that fastener selection involves more than simply choosing a stainless steel grade. Dimensions, thread type, strength requirements, operating temperature, corrosion conditions, applicable standards and documentation all need to match the application.

We maintain sourcing capabilities for standard and non-standard requirements and can arrange SS 316H Stud Bolt Stockist quantities for projects requiring repeat or bulk supply.

For export requirements, we also provide suitable packaging, marking and documentation according to customer and shipment requirements.

Stainless Steel 316H Fasteners Exporter

As a Stainless Steel 316H Fasteners Exporter, we supply products for customers across different industrial markets. Fasteners can be prepared according to project specifications, including required material grade, dimensions, thread configuration, testing and certification.

Our approach focuses on consistent material identification, dimensional accuracy and traceable documentation so that buyers can confidently integrate the fasteners into critical assemblies.

316H Fasteners vs 316L Fasteners

The main difference between 316H and 316L is carbon content and the resulting suitability for different service conditions.

Feature 316H 316L
Carbon 0.04–0.10% 0.030% max
UNS S31609 S31603
High-Temperature Creep Resistance Better suited Generally lower
Weldability Less preferred for extensive welding Excellent
Corrosion Resistance Excellent Excellent
Typical Selection Elevated-temperature service Corrosive and welded applications

316H should not automatically be considered a replacement for 316L. The correct grade depends on temperature, welding requirements, corrosion conditions and design codes.

Request a Quote for Stainless Steel 316H Fasteners

Looking for Stainless Steel 316H Fasteners, UNS S31609 Fasteners, WNR 1.4919 Bolts, or ASTM A182 F316H Fasteners?

Share your required size, quantity, standard, thread type, application and certification requirements with us. We can help you select and source the appropriate 316H bolts, nuts, stud bolts, screws and threaded rods for your project.

Get in touch with us today for pricing, availability, technical specifications and customized 316H fastener requirements.

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Frequently Asked Questions

Stainless Steel 316H Fasteners are high-carbon 316-series stainless steel bolts, nuts, screws, studs and threaded rods manufactured from UNS S31609 material for applications requiring corrosion resistance and improved elevated-temperature performance.
The UNS designation for 316H stainless steel is UNS S31609.
316H is commonly identified with Werkstoff Number 1.4919.
Yes. 316H is specifically selected for applications where elevated-temperature strength and creep resistance are important. Actual suitability depends on design temperature, applied stress and the governing engineering code.
316H has a controlled carbon range of approximately 0.04–0.10%, while standard 316 has a lower maximum carbon limit. The higher carbon content helps 316H provide better elevated-temperature creep performance.
Yes. We supply UNS S31609 Stud Bolts, full-thread studs and 316H SS Threaded Rod in different diameters, lengths and thread configurations.

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