What material grade does L605 Washers use?

L605 Washers are manufactured per the applicable ASTM, ASME, DIN, or ISO specification for the material grade. TorqBolt provides material test certificates (MTC) per EN 10204 3.1 or 3.2 with every supply.

What sizes are available for L605 Washers?

TorqBolt manufactures L605 Washers in metric sizes M6 to M100 and imperial sizes 1/4" to 4" diameter, with custom lengths from 10mm to 3000mm. Non-standard sizes are available on request.

Are L605 Washers NACE MR0175 / ISO 15156 certified?

Yes, L605 Washers can be supplied with NACE MR0175 / ISO 15156-2/3 sour service certification when specified at order. Material certificates and test reports are provided.

What is the typical delivery time for L605 Washers?

Standard stock items ship in 1-2 weeks. Custom manufactured L605 Washers typically ship in 4-6 weeks depending on quantity, material availability, and certification requirements.

Do you provide third-party inspection for L605 Washers?

Yes, third-party inspection by TUV, Lloyd's Register, BV, DNV, SGS, and Intertek is available upon request for L605 Washers. Witness testing and stage inspections can be arranged.

L605 Washers Manufacturer & Supplier

Name: L605 Washers
Brand: TorqBolt
SKU: TB-L605WASHERS
Availability: InStock

L605 Washers Specification

The raw material of these fasteners is further classified as Super Nickel Alloys. Being a PED certified Fasteners Manufacturer by TUV Rheinland,our fasteners are accompanied with EN 10204 3.1/3.2 certification. L605 Washers are available in hot forged,cold forged and bar stock machined conditions depending upon the order quantity.

Alloy L605 Is Chromium Nickel Tungsten Cobalt Alloy . It Posses Good Oxidation And Corrosion Resistance As Well As High Strength. This Alloy Can Be Provided In Both Solution Annealed Condition And Age Hardened Condition.

L605 Equivalent Designation

UNS Designation	British STD	Werkstoff No.	European STD	Swedish STD	Japanese STD
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L605 Washers — Specifications & Dimensions

L605 washers distribute clamp load over a wider bearing area, prevent surface damage, and accommodate bolt-hole oversize. TorqBolt manufactures L605 washers per ASME B18.21.1 / B18.22.1, DIN 125 / 126 / 127 / 9021, and ISO 7089 / 7090 / 7093 / 7094, in metric (M3–M100) and imperial (#4–4") sizes.

Plain Washer Dimensions

L605 plain washers are characterized by three critical dimensions: ID (clearance over bolt diameter), OD (load distribution area), and thickness (compressive stiffness). Standard tolerances are h13 on OD and H13 on ID per ISO 286-2; flatness 0.05 mm/100 mm and parallelism 0.05 mm/100 mm verified per lot. Edge break / chamfer per drawing.

Form Variants

Form A (regular) — DIN 125-A / ISO 7089, the default plain washer

Form B (large OD) — DIN 9021 / ISO 7093, for soft mating surfaces

Form C (heavy) — DIN 7349 / ISO 7094, for slotted holes / structural use

Spring (split) — DIN 127 / ASME B18.21.1, helical anti-vibration

Tooth lock (internal / external) — DIN 6797 / 6798, anti-rotation

Conical / Belleville (DIN 6796 / 2093) — preload maintenance

Hardness & Surface

L605 washers are hardness-controlled to balance load-distribution stiffness against surface damage to mating parts. Typical Vickers HV ranges: plain 140–180 HV; spring 380–440 HV; Belleville 460–540 HV. Surface finish Ra 1.6 µm or better; on critical sealing applications, Ra 0.8 µm available.

Special Patterns

TorqBolt produces L605 washers in square (DIN 436), fender (oversized OD), tab / lock-tang (DIN 462 / 463), and spherical seat washer + cup combinations. EN 10204 3.1 / 3.2 material certificates standard; NACE MR0175 / ISO 15156 on request.

Specialty Fastener Alloys

TorqBolt manufactures specialty fasteners across the full range of corrosion-resistant alloys (CRAs), high-temperature superalloys, and engineered metallurgies required by the process industries. Beyond the high-volume Inconel, Hastelloy, Duplex, and stainless grades, our supply chain covers a long tail of specification-driven alloys for unique service envelopes — sour wells, extreme cryogenics, pharmaceutical-grade purity, oxidizing acids, chlorinated solvents, and high-temperature cyclic-load fasteners.

Each specialty alloy is sourced from approved mills with full melt traceability through a closed forging route. Heat-treat condition, mechanical properties, and corrosion testing are controlled to the customer's drawing or governing specification — whether ASTM, ASME, AMS, MIL, NORSOK, NACE, or proprietary end-user codes. EN 10204 3.1 (mill cert) or 3.2 (third-party witnessed) material test certificates are issued with every lot, listing chemistry, mechanicals at relevant test temperatures, hardness, dimensional inspection, and any corrosion or NDT test results required.

Third-party inspection by TUV, Lloyd's, BV, DNV, SGS, and Intertek is arrangeable. NACE MR0175 / ISO 15156 sour-service qualification, NORSOK M-650 mill qualification, API 6A wellhead bolting, API 20E subsea bolting, and PED 2014/68/EU pressure-equipment compliance available across the alloy range as the application demands.

L605 Washers