RAYCHIN LIMITED

Alloy 926 Bolts

Alloy 926 bolts manufactured to DIN 931 (partial thread), DIN 933 (full thread), ISO 4014, ISO 4017, and ASME B18.2.1 standards. Features hex head, heavy hex, and flange head configurations. Ideal for high-temperature corrosive applications up to 400°C in seawater desalination, flue gas desulfurization, and chemical processing. Available in sizes from M6 to M100 (metric) and 1/4" to 4" (inch) in various lengths. Precision rolled threads for superior strength and corrosion resistance.

Alloy 926 Nuts

Alloy 926 nuts manufactured to DIN 934, ISO 4032, ISO 4033, ISO 4034, and ASME B18.2.2 standards. Available in hex nuts, heavy hex nuts, jam nuts, and lock nuts. Precision tapped to Class 2B and 3B tolerances for reliable engagement with mating bolts and studs. Ideal for marine environments, offshore platforms, and chemical processing equipment. Available in sizes from M3 to M100 (metric) and #4 to 4" (inch). Proof load testing ensures compatibility with mating fasteners.

Alloy 926 Screws

Alloy 926 screws including hex head screws (DIN 931, DIN 933), socket head cap screws (DIN 912, ISO 4762, ASME B18.3), Torx drive screws, flat head screws, button head screws, pan head screws, and set screws. Available with various drive types including hex socket, Torx, Phillips, and slotted. Ideal for instrument connections, valve assemblies, and equipment requiring corrosion-resistant fasteners in chloride-laden environments. Sizes from M3 to M36 and #2 to 1-1/2".

Alloy 926 Washers

Alloy 926 washers manufactured to DIN 125, DIN 9021, ISO 7089, ISO 7093, and ASME B18.22.1 standards. Available in flat washers, heavy washers, and spring washers. Precision stamped or machined from solution annealed Alloy 926, these washers provide uniform load distribution under bolt heads and nuts. Ideal for flange connections, heat exchanger tube sheets, and vessel assemblies in corrosive environments. Sizes from M3 to M100 and #2 to 4".

Alloy 926 Stud Bolts

Alloy 926 stud bolts manufactured to DIN 938, DIN 939, DIN 976, ASME B16.5, and ASME B18.31.2 standards. Available in double-end studs, fully threaded studs, and tap-end studs. Designed for flange connections, pressure vessel closures, and heat exchanger applications in aggressive environments. Essential for ASME B16.5 flange bolting in chemical plants, offshore platforms, and desalination facilities. Sizes from 1/4" to 4" (M6 to M100) in various lengths.

Alloy 926 Threaded Rods

Alloy 926 threaded rods manufactured to DIN 975, DIN 976, ASME B18.31.1M, and ASME B18.31.2 standards. Continuous threads along the entire length allow for cutting to any required length for custom applications. Ideal for pipe supports, flange connections, and structural assemblies in corrosive environments. Available in diameters from 1/4" to 4" (M6 to M100) in standard lengths up to 6 meters. Precision rolled threads for superior strength and consistency.

Metallurgical competence

Engineers on staff with deep expertise in super-austenitic stainless steels. We ensure proper solution annealing (1150-1200°C) for optimal corrosion resistance across all Alloy 926 fasteners. Every heat is verified by in-house PMI testing to confirm chemistry. With 24-26% nickel, 6-7% molybdenum, and nitrogen addition, our fasteners provide exceptional resistance to pitting, crevice corrosion, and chloride stress corrosion cracking.

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. All Alloy 926 fasteners meet applicable ASTM B649, ASME SB649, NACE MR0175, and all relevant fastener standards.

Precision forming & thread rolling

In-house CNC cold heading, hot forging, and precision thread rolling capabilities ensure consistent head dimensions and thread geometry. Precision rolled threads provide superior fatigue life and dimensional accuracy. 100% thread and dimensional inspection available. Controlled underhead fillet for improved fatigue resistance.

Custom solutions

Need a special head style, unusual thread configuration, or custom material certification for your corrosive application? Our engineering team works with you to produce custom Alloy 926 fasteners to your drawing. We provide specialized surface treatments, passivation, and NACE MR0175 compliant processing per customer requirements.