304 & 316 stainless washers, as machined.

Look up any washer size in seconds

Pick a standard — DIN 125 / 9021 / 433, ISO, Chinese GB/T, or the US SAE / USS inch series — and a size. Get the exact inner Ø, outer Ø, thickness and weight per 1000 pieces, plus the matching equivalent standards.

Is HUIHUI a manufacturer or a trading company?

HUIHUI is a manufacturer. We have run our own 10,000 m² plant in Taozhuang, Jiashan, Zhejiang since 2008 — 120 staff, ~3,600 t/yr output. Rows of high-speed YANGLI and SHINGLI coil-fed stamping presses operate in-house. No intermediaries, no sourcing from third parties. About the factory →

Which stainless grades and sizes do you offer?

Grades 304 (A2), 316 (A4) and 316L. Sizes M2–M64, metric and imperial. Material is genuine full-spec stainless from documented melts — not under-gauge or recycled substitutes. Finish is bright or polished only (no plating, no passivation, no black or zinc). 304 vs 316 grade guide →

What DIN and ASME standards do your washers meet?

DIN 125, DIN 9021, DIN 433, DIN 127, DIN 988 — and ASME B18.21.1, USS, SAE. ISO 7089, GB 95, and JIS, BS, NF, KS, UNI references are also covered. Metric and imperial both. Dimension & tolerance tables →

Can you produce custom or non-standard washers to a drawing?

Yes. Send a drawing or a sample — we can stamp special ODs, IDs, thicknesses, chamfers and non-round hole shapes in 304, 316 or 316L. CNC tooling and die work are in-house. Custom orders include first-article inspection before production runs. Custom & OEM details →

Do you provide material test certificates (MTC) or PMI?

Yes. Mill test certificates to EN 10204 3.1 and positive material identification (PMI) are available on request. Material is sourced from documented melts — traceability is part of our ISO 9001:2015 quality system (cert No. 74326Q00174R001). Quality & inspection details →

What are your Incoterms and how quickly do you quote?

FOB or CIF, with EU- and US-market packing. HS codes 7318.22 (flat) / 7318.21 (spring). MOQ and lead time are flexible — both confirmed with your quote. Quotes typically come back within ~1 business day, answered by people who read drawings. Email [email protected] or WhatsApp +86 153 5662 8355.