17-4 PH Set Screws
RAYCHIN SPECIALTY METALS FASTENERS: BOLTS, NUTS, SCREWS, WASHERS, STUDS, THREADED RODS, U-BOLT, J-BOLTS
STANDARD AND CUSTOMIZED, SMALL BATCH AND LARGE BATCH, IMPERIAL AND METRIC
An extremely strong precipitation hardened stainless steel
· Well suited for high strength applciaitons
· Up to 4x stronger than 316 stainless steel
· Maintains its mechanical strength up to 600°F
· 17-4PH Chemistry & Specifications
· 17-4PH set screw features and benefits
· 17-4PH Datasheet
Request a Quote from RAYCHIN
We're here to help!
17-4 PH Set Screws: Socket Set Screws, Square Head, Cup Point & Custom Configurations
RAYCHIN LIMITED is a recognized expert in 17-4 PH set screws — from 17-4 PH socket set screws, 17-4 PH square head set screws, 17-4 PH hex socket set screws, 17-4 PH cup point set screws, 17-4 PH cone point set screws, 17-4 PH flat point set screws, 17-4 PH oval point set screws, 17-4 PH half dog point set screws to custom non-standard set screw configurations. Our portfolio includes set screws manufactured to NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS standards. Engineered for extreme environments: aerospace, oil & gas, medical devices, robotics, and marine industries where high temperature resistance and corrosion protection are critical. 17-4 PH set screws are available in all heat treatment conditions with precision ground points and full traceability.
Complete Range of 17-4 PH Set Screws
Socket Set Screws – Cup Point
17-4 PH socket set screws with cup point manufactured to DIN 913, ISO 4026, and ASME B18.3. Cup point provides maximum holding power by biting into the mating shaft. Ideal for permanent or semi-permanent mounting of gears, pulleys, and collars on shafts. Available in sizes from #0 to 1" (M1.6 to M24) with hex socket drive.
Socket Set Screws – Cone Point
17-4 PH socket set screws with cone point manufactured to DIN 914, ISO 4027, and ASME B18.3. Cone point is designed for use in conical seats or where precise positioning is required. The sharp point provides excellent initial penetration and seating. Ideal for applications requiring exact axial location.
Socket Set Screws – Flat Point & Oval Point
17-4 PH socket set screws with flat point (DIN 915, ISO 4028) for applications requiring frequent adjustment without shaft damage. 17-4 PH socket set screws with oval point for applications where shaft scoring must be minimized. Available in all standard sizes with full traceability.
Socket Set Screws – Half Dog Point
17-4 PH socket set screws with half dog point manufactured to DIN 916, ISO 4029, and ASME B18.3. The half dog point fits into a drilled hole in the shaft for positive locking and location. Ideal for applications requiring the set screw to carry thrust loads or provide positive positioning.
Square Head Set Screws
17-4 PH square head set screws manufactured to ASME B18.2.2 and DIN 478. Designed for applications where socket drive is not practical or where higher torques are required. Available with cup, cone, flat, and half dog points. Ideal for heavy industrial applications and equipment requiring frequent adjustment with wrenches.
Custom & Specialty 17-4 PH Set Screws
Need a special point geometry, unusual length, or custom drive configuration? RAYCHIN engineers work with you to produce custom 17-4 PH set screws to your drawing. Expert heat treatment (H900, H925, H1025, H1075, H1100, H1150, H1150M, H1150D) precisely controlled for each batch. Manufactured to NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN, KS standards. Precision ground points and special end finishes available.
17-4 PH Set Screw Point Styles & Applications
Cup Point
Most common point style. The cup digs into the shaft for maximum holding power. Best for permanent mounting on soft or medium hardness shafts.
Cone Point
Sharp 90° cone for use in conical seats or where precise positioning is needed. Provides excellent axial location.
Flat Point
Ground flat end for frequent adjustment without shaft damage. Ideal for applications requiring repeated repositioning.
Oval Point
Rounded end minimizes shaft scoring. Used where shaft surface must be protected.
Half Dog Point
Fits into drilled hole in shaft for positive locking and thrust load capability. Maximum holding strength.
Manufacturing Standards for 17-4 PH Set Screws
RAYCHIN LIMITED manufactures 17-4 PH set screws to the following national and international standards, ensuring full compliance for projects worldwide. Both standard and non-standard custom configurations are available.
International Standards & Global Designations for 17-4 PH Set Screws
To serve clients worldwide, RAYCHIN LIMITED manufactures 17-4 PH set screws from material conforming to the following national and international specifications. This ensures full compliance for projects in the Americas, Europe, Asia, and the Middle East.
ASTM A564 GR.630 ASTM A193 GR.630 AMS 5643 1.4542 SUS630 UNS S17400 17-4PH
Chemical Composition (Weight %) – 17-4 PH Precipitation Hardening Stainless Steel
Our 17-4 PH set screws are produced from melts that strictly conform to the limits below per ASTM A564 / AMS 5604. The precise addition of copper and niobium enables age-hardening to achieve high strength.
Expert note: The Nb/Cu ratio ensures consistent precipitation of coherent copper-rich clusters during aging. This yields tensile strengths up to 190 ksi (1310 MPa) in the H900 condition while retaining good ductility. All raw material is positively identified by PMI (Positive Material Identification) and certified with mill test reports.
Complete Mechanical Properties of 17-4 PH Set Screws (by Heat Treatment per ASTM A564/A564M)
17-4 PH set screws are typically supplied in one of eight standard heat treatment conditions. RAYCHIN LIMITED recommends the appropriate temper based on your strength vs. toughness requirements. The data below represent minimum values for the material (longitudinal direction) per ASTM A564/A564M Table 3.
Condition H900 (480°C / 900°F) – Highest Strength
Condition H925 (495°C / 925°F) – Slightly lower strength, improved toughness
Condition H1025 (550°C / 1025°F) – Best combination of strength & toughness
Condition H1075 (580°C / 1075°F) – Improved ductility
Condition H1100 (595°C / 1100°F) – Enhanced toughness
Condition H1150 (620°C / 1150°F) – Maximum stress corrosion resistance
Condition H1150M (760°C + 620°C / 1400°F + 1150°F) – Double aged, maximum ductility (NACE MR0175 approved)
Condition H1150D (620°C + 620°C / 1150°F + 1150°F) – Double aged, improved properties
Additionally, 17-4 PH set screws exhibit excellent fracture toughness and very high fatigue strength. Our test certificates include actual values from each production lot. For sour service (NACE MR0175), H1150M or H1150D conditions are recommended for optimal sulfide stress corrosion cracking resistance.
High Temperature Performance of 17-4 PH Set Screws
17-4 PH stainless steel is widely used in applications requiring retention of mechanical properties at elevated temperatures. The material maintains excellent strength up to 400°C (752°F), beyond which copper-rich precipitates begin to coarsen. For continuous service, maximum operating temperature is approximately 316-400°C depending on condition.
Temperature-Dependent Strength Retention (Condition H900)
The yield strength of 17-4 PH decreases with increasing temperature, with thermal softening becoming significant above 400°C. For applications requiring strength retention above 400°C, special heat treatments or alternative alloys should be considered.
Thermal Stability Limits
Corrosion Resistance of 17-4 PH Set Screws
17-4 PH stainless steel offers excellent corrosion resistance comparable to 304 stainless steel in many environments, attributed to its high chromium content (15-17.5%) which forms a protective Cr₂O₃ passive layer. The corrosion behavior is significantly influenced by heat treatment condition and aging parameters.
Corrosion Performance in Different Environments
Effect of Heat Treatment on Corrosion Resistance
Critical Corrosion Considerations for Set Screws
- Sensitization: Aging above 495°C can cause chromium carbide precipitation at grain boundaries, leading to chromium depletion and increased susceptibility to intergranular corrosion. However, 17-4 PH is generally less susceptible to sensitization than conventional martensitic grades due to low carbon content.
- Stress Corrosion Cracking (SCC): For environments with risk of SCC, use higher aging temperatures (H1150, H1150M, H1150D) which are approved per NACE MR0175.
- Optimal Aging: Solution treatment at 1040°C followed by aging at 480°C for 4 hours provides the best combination of hardness and corrosion resistance.
- Comparison to 304: 17-4 PH offers comparable corrosion resistance to 304 stainless steel in many environments, with significantly higher strength.
- NACE MR0175 Compliance: For sour service applications, only H1150M and H1150D conditions are permitted with maximum hardness of 28 HRC.
Corrosion Engineering Note: For critical applications in aggressive environments, RAYCHIN LIMITED can provide passivation, specialized coatings (Xylan, PTFE, silver plating), or recommend optimal heat treatment conditions (H1150, H1150M for maximum stress corrosion cracking resistance). Third-party corrosion testing per ASTM G31, G48, or G61 available upon request. NACE MR0175 compliant set screws available in H1150M and H1150D conditions.
Special focus: 17-4 PH Set Screws for Aerospace & High Temperature Applications
For critical applications in aerospace, gas turbines, and high-temperature service, RAYCHIN offers 17-4 PH set screws manufactured to NAS, MS, DIN, ISO, and customer-specific specifications. Our capabilities include:
- Aerospace Standards: NAS 570 series, MS 913-916 series
- International Standards: DIN 913-916, ISO 4026-4029, ASME B18.3
- Point Styles: Cup, cone, flat, oval, half dog, and custom points
- Drive Types: Hex socket, square head, slotted head, Torx drive
- Surface Treatments: Passivation, silver plating, PTFE coating, Xylan
- High Temperature: Continuous service up to 400°C (752°F) with retained hardness
- Sour Service (NACE MR0175): H1150M and H1150D double-aged conditions with hardness ≤ 28 HRC
- Custom: Special point geometries, lengths, and drive configurations per customer drawings
All 17-4 PH set screws are supplied in conditions H900 through H1150D, with full traceability and third-party NDT upon request.
Why RAYCHIN LIMITED – The 17-4 PH Set Screw Authority
Metallurgical competence
Engineers on staff with deep expertise in precipitation hardening. We control aging parameters to ±5°C for consistent mechanical properties across all 17-4 PH set screws. Every heat is verified by in-house testing.
Global approvals & traceability
Our quality system is ISO 9001:2015 and AS9100D certified; we also comply with NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS. Full material traceability from melt to final packaging (EN 10204 3.1/3.2). Third-party inspections (ABS, DNV, Lloyds) available.
Precision point grinding
In-house CNC grinding ensures consistent point geometry and sharpness. Cup points, cone points, and special end configurations produced to tight tolerances.
Custom solutions
Need a special point geometry, unusual length, or custom drive configuration? Our CNC turning and grinding departments handle short runs with agility. We also provide specialized coatings and corrosion testing per aerospace requirements.
Contact the 17-4 PH set screw experts today
Request a quote for 17-4 PH socket set screws, square head set screws, cup point, cone point, flat point, oval point, half dog point set screws & custom configurations – any global standard (NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN, KS), any condition, any quantity. Inquire about high temperature or NACE MR0175 sour service applications.
sales@ray-chin.com | +86 534 2166 566Our team speaks English, German, Mandarin, and Japanese – ready for your global procurement.
Request A Quote! We'll respond as soon as possible(within 12 hours)
![17-4 PH Fasteners]( "17-4 PH Fasteners")
17-4 PH Fasteners![17-4 PH Bolts]( "17-4 PH Bolts")
17-4 PH Bolts![17-4 PH Nuts]( "17-4 PH Nuts")
17-4 PH Nuts![17-4 PH Screws]( "17-4 PH Screws")
17-4 PH Screws![17-4 PH Washers]( "17-4 PH Washers")
17-4 PH Washers![17-4 PH Studs]( "17-4 PH Studs")
17-4 PH Studs![17-4 PH Hex Bolts]( "17-4 PH Hex Bolts")
17-4 PH Hex Bolts![17-4 PH Shoulder Bolts]( "17-4 PH Shoulder Bolts")
17-4 PH Shoulder Bolts![17-4 PH 12 Point Screws]( "17-4 PH 12 Point Screws")
17-4 PH 12 Point Screws![17-4 PH Lock Nuts]( "17-4 PH Lock Nuts")
17-4 PH Lock Nuts![17-4 PH Hex Cap Screws]( "17-4 PH Hex Cap Screws")
17-4 PH Hex Cap Screws![17-4 PH Set Screws]( "17-4 PH Set Screws")
17-4 PH Set Screws![17-4 PH Socket Head Cap Screws]( "17-4 PH Socket Head Cap Screws")
17-4 PH Socket Head Cap Screws![17-4 PH Vented Screws]( "17-4 PH Vented Screws")
17-4 PH Vented Screws![17-4 PH Torx Screws]( "17-4 PH Torx Screws")
17-4 PH Torx Screws![17-4 PH Pan Head Screws]( "17-4 PH Pan Head Screws")
17-4 PH Pan Head Screws![17-4 PH Flat Head Screws]( "17-4 PH Flat Head Screws")
17-4 PH Flat Head Screws![17-4 PH Button Head Cap Screws]( "17-4 PH Button Head Cap Screws")
17-4 PH Button Head Cap Screws
Get a Quote