17-4 PH Fasteners – The Complete Guide to Precipitation-Hardening Stainless Steel Bolts, Nuts & Studs
When you need the strength of alloy steel with the corrosion resistance of stainless, 17-4 PH fasteners deliver the optimal balance. RAYCHIN LIMITED, a specialist manufacturer and global supplier of high-performance alloy fasteners, offers the complete range of 17-4 PH (UNS S17400) bolts, nuts, washers, stud bolts, and custom-machined parts in all common heat treatment conditions. This guide provides the technical depth engineers need to specify the correct condition for every application.
Product Range
17-4 PH Bolts
Hex bolts, socket head cap screws, 12-point aerospace bolts. Sizes M3–M36 and #4–1-1/2″.
17-4 PH Stud Bolts
Double-end and fully threaded studs per ASME B16.5. Ideal for high-pressure flange connections.
17-4 PH Nuts
Heavy hex nuts and lock nuts. Proof-load matched to corresponding bolts.
17-4 PH Washers
Flat and spring washers. Custom OD/ID and thickness available.
17-4 PH Threaded Rod
Continuous-thread studding. Diameters 1/4″–2″ and M6–M48.
Custom 17-4 PH Parts
Special threads, non-standard heads, and precision-machined components per drawing.
Material Specifications & Standards
Chemical Composition
Heat Treatment Conditions & Mechanical Properties
Applications
- Aerospace & Defense: Engine components, landing gear, and structural fasteners.
- Chemical Processing: Valves, pumps, and reactor components in mild corrosive environments.
- Oil & Gas: Wellhead equipment and high-pressure flange bolting.
- Medical: Surgical instruments and orthopedic components (ASTM F899).
- Industrial Equipment: High-strength fasteners for paper mills and nuclear applications.
Quality Assurance
- EN 10204 3.1 / 3.2 Material Test Certificates
- Positive Material Identification (PMI)
- Hardness and tensile testing per condition
- Magnetic permeability verification
- Third-party inspection available
Frequently Asked Questions
What is 17-4 PH stainless steel?
17-4 PH (UNS S17400) is a precipitation-hardening martensitic stainless steel containing copper and niobium. It offers high strength (up to 190 ksi tensile) and good corrosion resistance.
What heat treatment conditions are available?
H900 (480°C) for maximum strength, H1025 (550°C) for a balance of strength and toughness, and H1150 (620°C) for maximum ductility. Each condition affects tensile strength, yield strength, and hardness.
Which standards cover 17-4 PH fasteners?
ASTM A564, AMS 5604, AMS 5342/5343/5344, and ASTM F899 for medical applications.
Does RAYCHIN provide material certificates?
Yes, EN 10204 3.1 / 3.2 and full mechanical test reports are provided with every shipment.
Need 17-4 PH Fasteners?
Contact our experts for a quote within 24 hours.
Email sales@ray-chin.comVisit www.ray-chin.com