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17‑4 PH Fasteners Catalog: Hex Bolts, Socket Caps, Studs, Nuts, Washers, 12‑Point & Custom Parts
When your design demands high strength, corrosion resistance, and reliable certification, 17‑4 PH stainless steel fasteners are the answer. At RAYCHIN LIMITED, we manufacture the complete spectrum of 17‑4 PH fastener types—from standard hex bolts and socket cap screws to aerospace 12‑point bolts and fully custom machined parts. Our factory‑direct control, extensive metric and imperial inventory, and full certification to ASTM A564, AMS 5643, and NACE MR0175 make us the global supplier of choice for demanding applications across aerospace, oil & gas, and high‑performance industrial sectors.
? 17‑4 PH Hex Bolts
Our 17‑4 PH hex bolts are manufactured to ASME B18.2.1 (imperial) and DIN 931/933 / ISO 4014 (metric), available in partial thread and full thread configurations. Typical sizes range from 1/4″ to 2″ (imperial) and M6 to M48 (metric), with larger diameters up to M64 or 2‑1/2″ upon request. These bolts are widely used in valve body flanges, pump casings, high‑pressure manifolds, and structural assemblies where high clamping force is required. RAYCHIN offers H900 for maximum strength, H1025 for aerospace toughness, and H1150D for NACE‑compliant sour service.
? 17‑4 PH Socket Head Cap Screws
For confined spaces and high‑strength clamping, 17‑4 PH socket head cap screws per ASME B18.3 provide a compact, high‑torque solution. RAYCHIN manufactures these in diameters from #4 to 1″ (imperial) and M3 to M24 (metric). The internal hex drive allows precise torque application, making them ideal for valve actuator mounts, hydraulic manifold bolting, and instrumentation brackets. We can supply these with passivation per AMS 2700 or with MoS₂ anti‑seize coatings pre‑applied for galling‑free assembly.
? 17‑4 PH Stud Bolts and Threaded Rod
Our 17‑4 PH stud bolts cover the full range of configurations required by the oil & gas, valve, and rotating equipment industries:
- Double‑end studs (tap‑end and nut‑end) per ASME B16.5 or customer specification, with unequal or equal thread lengths.
- Fully threaded studs / continuous threaded rod per ASME B18.31.2 or DIN 976, available in lengths up to 3 meters.
- Custom stepped studs with reduced‑shank diameters for thermal expansion accommodation in high‑temperature valve service.
Diameter range: 1/4″ – 2‑1/2″ (imperial), M6 – M64 (metric). These are the workhorses of API 6A wellhead connectors, gate valve bonnets, and compressor casing bolting. RAYCHIN provides 17‑4 PH threaded rod in all conditions, cut to your specified length with chamfered ends and full certification.
? 17‑4 PH Heavy Hex Nuts
Matching our studs and bolts, we produce 17‑4 PH heavy hex nuts per ASME B18.2.2 and DIN 934, with proof‑load capacities verified to match the tensile strength of each heat treatment condition. For high‑temperature or vibration‑prone applications, we also supply all‑metal prevailing‑torque lock nuts in 17‑4 PH. These nuts are designed to maintain preload under vibration and thermal cycling without polymer inserts that degrade above 250°C. Nuts can be supplied in the same condition as the mating bolt, or in a slightly lower hardness to reduce galling risk.
⬜ 17‑4 PH Washers
We manufacture 17‑4 PH washers to ASME B18.22.1 (flat washers) and DIN 125, in standard and custom dimensions. Common sizes match bolt diameters from 1/4″ to 2″ and M6 to M48. Spring lock washers per DIN 127 are also available for anti‑loosening applications. Washers play a critical role in distributing clamp load and protecting flange surfaces; RAYCHIN's 17‑4 PH washers retain their mechanical properties and corrosion resistance through the same heat treatment conditions as the bolts they accompany, ensuring consistent joint behavior.
✈️ 17‑4 PH 12‑Point Bolts
For aerospace propulsion, landing gear, and high‑pressure compact flange connections, RAYCHIN produces 17‑4 PH 12‑point bolts to ASME B18.2.5 and customer‑specific head profiles. These bolts provide a compact wrenching envelope and high torque transfer capability. Our aerospace‑grade 12‑point bolts are manufactured from AMS 5643 bar, aged in NADCAP‑accredited vacuum furnaces, and subjected to 100% fluorescent penetrant inspection (FPI). We deliver these with full AS9102 FAIR documentation and EN 10204 Type 3.2 certification.
17‑4 PH Bolts: Metric vs Imperial
RAYCHIN maintains stock and tooling for both measurement systems. The table below summarizes our typical size ranges and applicable standards:
We can cross‑reference imperial and metric requirements seamlessly—simply specify the thread standard and dimensions on your RFQ.
17‑4 PH Custom Fasteners: Your Design, Our Manufacturing
Beyond the catalog, RAYCHIN specializes in 17‑4 PH custom fasteners manufactured to your exact dimensions and specifications. Our engineering team works directly with your designers to produce:
- Stepped studs with multiple diameters and thread sizes on a single component.
- Flanged hex bolts with integrated washer faces and specific under‑head radii.
- Body‑bound bolts with precise shank diameters (h7 tolerance or tighter) for shear‑loaded aerospace joints.
- Valve stem extension rods and connection pieces with special end configurations.
- Non‑standard head geometries—oval, flat, button, or completely proprietary shapes.
We accept CAD files in STEP, IGES, DXF, and all common formats. Our CNC turning and milling centers produce components from prototype quantities to full production runs, all with the same certified quality and heat treatment control as our standard products.
Quality, Certification, and Finishing Options
Every 17‑4 PH fastener we ship is backed by our rigorous quality system:
- Material certification: ASTM A564 Type 630, AMS 5643, or ASTM F593 as required.
- Documentation: EN 10204 Type 3.1 as standard, Type 3.2 with third‑party witness on request.
- In‑house testing: PMI (OES), lot tensile and hardness testing (100%), microstructural verification.
- Surface finishes: Passivation per AMS 2700, electropolishing, MoS₂ or boron nitride anti‑seize coatings, silver plating (non‑electrolytic).
- Heat treatment: All conditions (H900 to H1150D) with digital furnace records and NADCAP accreditation for aerospace.
Send your part numbers, drawings, or specifications to our technical sales team. We'll provide a complete quotation with lead time, condition recommendation, and certification details within 24 hours.
✉️ sales@ray-chin.com? www.ray-chin.com | 17‑4 PH Fastener Catalog · Custom Manufacturing · Global Supply
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