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Alloy 20 Fasteners: Hex Bolts, Studs, Nuts, Washers & Threaded Rod for Acid Service
For chemical environments that combine sulfuric, phosphoric, or mixed acids at elevated temperatures, Alloy 20 fasteners are the proven, cost‑effective solution. RAYCHIN LIMITED, a specialist global manufacturer and supplier of high‑performance alloy fasteners, produces the complete line of Alloy 20 hex bolts, stud bolts, socket head cap screws, heavy hex nuts, washers, and threaded rod. Every fastener is manufactured from certified UNS N08020 bar, solution‑annealed, and shipped with full documentation. This catalog provides a complete overview of our product range, dimensions, and quality standards.
1. Alloy 20 Fastener Product Forms
? Alloy 20 Hex Bolts
Alloy 20 hex bolts are manufactured to ASME B18.2.1, DIN 931/933, and ISO 4014. Available in partial and full thread, sizes from 1/4″ to 2″ and M6 to M48. Ideal for sulfuric acid piping flanges, chemical reactor vessel bolting, and pickling tank fasteners.
? Alloy 20 Stud Bolts
Alloy 20 stud bolts include double‑end studs per ASME B16.5 and fully threaded studs per DIN 976. Diameters from 1/4″ to 2‑1/2″ and M6 to M64. Lengths up to 3 meters. Rolled threads for enhanced fatigue life and resistance to galling during assembly.
? Alloy 20 Socket Head Cap Screws
Alloy 20 socket head cap screws per ASME B18.3 provide compact, high‑torque fastening for confined spaces. Sizes from #4 to 1″ and M3 to M24. Common in valve actuator mounts and instrumentation brackets in chemical plants.
? Alloy 20 Threaded Rod
Alloy 20 threaded rod (continuous‑thread studding) is cut to your specified length with chamfered ends. Diameters from 1/4″ to 2‑1/2″ and M6 to M64. Full lot certification and PMI testing included as standard.
? Alloy 20 Heavy Hex Nuts
Alloy 20 heavy hex nuts per ASME B18.2.2 and DIN 934 are proof‑load matched to the corresponding bolt or stud. All‑metal prevailing‑torque lock nuts are also available for vibration‑resistant assemblies in chemical service.
⬜ Alloy 20 Washers
Alloy 20 washers—flat per ASME B18.22.1 / DIN 125 and spring lock per DIN 127—match bolt diameters from 1/4″ to 2″ and M6 to M48. Custom outside diameters and thicknesses are available.
2. Alloy 20 Flanged Bolts and Custom Configurations
Alloy 20 flanged bolts integrate a washer‑like bearing surface under the head, distributing clamp load without a separate washer. RAYCHIN manufactures these to your custom dimensions—head diameter, flange thickness, under‑head fillet radius—as well as stepped studs, reduced‑shank bolts, and body‑bound fasteners from your CAD drawings.
3. Alloy 20 Fasteners Dimensions: Metric and Imperial
Alloy 20 metric bolts and Alloy 20 imperial fasteners are fully covered—RAYCHIN maintains tooling and inventory for both measurement systems. Simply specify the thread standard and dimensions on your RFQ.
4. Quality Assurance and Certification
Every Alloy 20 fastener shipment from RAYCHIN includes:
- Material certification to ASTM B473 (UNS N08020)
- EN 10204 Type 3.1 certificate (Type 3.2 with independent third‑party witness on request)
- Positive Material Identification (PMI) report—OES analysis on finished fasteners
- Mechanical test report: tensile, yield, elongation, and hardness
Send your part numbers, drawings, or specifications to our technical sales team. We'll provide a complete quotation with lead time, dimensional compliance, and certification details within 24 hours.
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