17-4 PH Button Head Cap 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 button head cap screw features and benefits
· 17-4PH Datasheet
Request a Quote from RAYCHIN
We're here to help!
17-4 PH Button Head Cap Screws: Low Profile, Hex Socket, Torx & Custom Configurations
RAYCHIN LIMITED is a recognized expert in 17-4 PH button head cap screws — from 17-4 PH button head socket screws, 17-4 PH low profile button head screws, 17-4 PH hex socket button head screws, 17-4 PH Torx button head screws to custom non-standard button head screw configurations. The button head design features a low-profile domed head with internal drive, providing a smooth appearance while requiring less head height than standard cap screws. Our portfolio includes button head cap screws manufactured to NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS standards. Engineered for extreme environments: aerospace, automotive, electronics, medical devices, and marine industries where high temperature resistance, corrosion protection, and space constraints are critical. 17-4 PH button head cap screws are available in all heat treatment conditions with precision rolled threads and full traceability.
Complete Range of 17-4 PH Button Head Cap Screws
Hex Socket Button Head Cap Screws
17-4 PH hex socket button head cap screws featuring low-profile domed head with hexagon socket drive. Manufactured to DIN 7380, ISO 7380, and ASME B18.3 specifications. The hex socket drive provides positive engagement and allows for higher torque capacity than slotted or Phillips drives. Ideal for limited clearance applications in aerospace, medical devices, and precision equipment. Available in sizes from #0 to 1" (M2 to M24). Heat treated to H900 through H1150 conditions for tensile strengths up to 190 ksi (1310 MPa).
Torx Button Head Cap Screws
17-4 PH Torx button head cap screws with hexalobular drive for maximum torque transmission and cam-out resistance. The Torx drive provides superior torque transfer and extended tool life compared to hex socket drives. Available with Torx drive sizes T6 through T60. Ideal for high-vibration applications and where tamper resistance is required. Security Torx variants with center pins available for anti-tamper applications.
Low Profile Button Head Screws
17-4 PH low profile button head screws with reduced head height for extremely limited clearance applications. Designed to customer specifications with head heights 20-30% lower than standard button head screws. Ideal for compact assemblies in electronics, medical instruments, and aerospace components where space is at a premium. Available with hex socket or Torx drive.
Aerospace & Military Button Head Screws
17-4 PH button head screws manufactured to NAS, AN, and MS specifications including NAS 1351, NAS 1352, and MS specifications. Available with UNJF-3A threads per MIL-S-8879 for enhanced fatigue life. Shot peened per aerospace requirements and available with silver or cadmium plating for anti-galling. Full traceability with material certification and third-party testing available.
Metric Button Head Cap Screws
17-4 PH metric button head cap screws manufactured to DIN 7380 and ISO 7380 standards. Available in coarse and fine thread pitches from M2 to M24. Precision rolled threads with Class 6g tolerance. The button head design provides a smooth appearance with head height approximately 50% of standard socket head cap screws. Ideal for international projects requiring metric fasteners with high strength and corrosion resistance.
Custom & Specialty 17-4 PH Button Head Cap Screws
Need a special head diameter, unusual drive size, or custom thread combination? RAYCHIN engineers work with you to produce custom 17-4 PH button head cap 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. Custom drive depths and tamper-resistant configurations available.
Button Head Design Advantages for 17-4 PH Cap Screws
Low Profile
Button head screws have a head height approximately 50% lower than standard socket head cap screws, ideal for confined spaces and low-clearance applications.
Smooth Appearance
The domed head provides a smooth, finished appearance that is aesthetically pleasing for consumer products and visible applications.
Internal Drive
Hex socket or Torx internal drives allow for positive engagement and higher torque capacity than external drives, with reduced risk of cam-out.
Weight Savings
The reduced head height and diameter result in lower weight compared to standard cap screws, critical for aerospace and racing applications.
Manufacturing Standards for 17-4 PH Button Head Cap Screws
RAYCHIN LIMITED manufactures 17-4 PH button head cap 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 Button Head Cap Screws
To serve clients worldwide, RAYCHIN LIMITED manufactures 17-4 PH button head cap 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 ASTM F593 GR.630 AMS 5643 1.4542 SUS630 UNS S17400 NACE MR0175 17-4PH
Chemical Composition (Weight %) – 17-4 PH Precipitation Hardening Stainless Steel
Our 17-4 PH button head cap 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. 17-4 PH is up to 4x stronger than 316 stainless steel. All raw material is positively identified by PMI (Positive Material Identification) and certified with mill test reports.
Complete Mechanical Properties of 17-4 PH Button Head Cap Screws (by Heat Treatment per ASTM A564/A564M)
17-4 PH button head cap screws are available in 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 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 (NACE MR0175 approved)
Additionally, 17-4 PH button head cap 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 Button Head Cap Screws
17-4 PH stainless steel maintains excellent mechanical properties up to 316°C (600°F), making it ideal for high-temperature applications in aerospace, power generation, and automotive systems.
Temperature-Dependent Strength Retention (Condition H900)
17-4 PH maintains its mechanical strength up to 600°F (316°C), with good properties retained even at higher temperatures. For continuous service above 400°C, special heat treatments or alternative alloys should be considered. Avoid long-term exposure to temperatures between 370-480°C to prevent loss of toughness at ambient temperature.
Thermal Stability Limits
Corrosion Resistance of 17-4 PH Button Head Cap 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 Button Head Cap 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.
- Optimal Aging: Specimens aged at 460°C for 2h or 480°C for 4h demonstrate minimal signs of sensitization and very low degrees of sensitization in DL-EPR tests.
- NACE MR0175 Compliance: For sour service applications, only H1150M and H1150D double-aged conditions are permitted with maximum hardness of 28 HRC.
- Comparison to 304: 17-4 PH offers comparable corrosion resistance to 304 stainless steel in many environments, with significantly higher strength (up to 4x stronger than 316).
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 button head cap screws available in H1150M and H1150D conditions.
Special focus: 17-4 PH Button Head Cap Screws for Aerospace & Electronics Applications
For critical applications requiring low profile and reliable performance, RAYCHIN offers 17-4 PH button head cap screws manufactured to NAS, MS, DIN, ISO, and customer-specific specifications. Our capabilities include:
- Aerospace Standards: NAS 1351, NAS 1352, MS 16995, MS 16996, MS 16997
- International Standards: DIN 7380, ISO 7380 (hex socket button head)
- Drive Types: Hex socket, Torx, security Torx, custom drives
- Thread Specifications: UNJF-3A per MIL-S-8879, metric MJ threads, standard UNRC/UNRF and metric coarse/fine
- Surface Treatments: Silver plating per AMS 2410, cadmium plating per AMS 2400, passivation per AMS 2700
- High Temperature: Continuous service up to 316°C (600°F) with retained mechanical properties
- Sour Service (NACE MR0175): H1150M and H1150D double-aged conditions with hardness ≤ 28 HRC
- Custom: Special head diameters, reduced head heights, unusual drive sizes, and custom thread combinations per customer drawings
All 17-4 PH button head cap screws are supplied in conditions H900 through H1150D, with full traceability and third-party NDT upon request.
Why RAYCHIN LIMITED – The 17-4 PH Button Head Cap 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 button head cap 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 cold heading
In-house precision cold heading and CNC machining ensure consistent head geometry and drive recess formation. Head height controlled to tight tolerances for low-profile applications. Full drive inspection available with optical comparators.
Custom solutions
Need a special head diameter, reduced head height, or custom drive configuration? Our cold heading and CNC turning departments handle short runs with agility. We also provide specialized coatings and corrosion testing per aerospace requirements.
Contact the 17-4 PH button head cap screw experts today
Request a quote for 17-4 PH button head cap screws, hex socket button head screws, Torx button head screws, low profile button head 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