Monel K500 WasherASTM B865 · ASME B18.22.1 · Manufacturer, stockist & exporter, India
Alloy K-500 · UNS N05500
A Monel K500 washer is a flat or spring ring that spreads bolt load, made from Monel K500 to ASTM B865. Flat washers protect the joint surface and spread load; spring and lock washers resist loosening. Match the washer material to the bolt to avoid galvanic corrosion.
- ASTM B865
- ASME B18.22.1
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Monel K500 Washer?
- What it is
- A flat or spring ring that spreads bolt load
- Material
- ASTM B865
- Dimensions
- ASME B18.22.1 · DIN 125
- Grade
- Monel K500 · UNS N05500
- Best at
- High-strength pump shafts, bolting and springs in seawater
Monel K500 Washer Specification
| Product | Monel K500 Washer |
|---|---|
| Material standard | ASTM B865 |
| Dimensional standard | ASME B18.22.1 · DIN 125 |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Washer
Flat washers protect the joint surface and spread load; spring and lock washers resist loosening. Match the washer material to the bolt to avoid galvanic corrosion.
- Flat, spring and lock
- ASME B18.21.1 · DIN 125 / 127
- Material to match the bolt
Monel K500 Washer Chemical Composition
| Element | Weight % |
|---|---|
| Nickel (+Co) | 63.0 min |
| Copper | 27.0 – 33.0 |
| Aluminium | 2.30 – 3.15 |
| Titanium | 0.35 – 0.85 |
| Iron | 2.0 max |
| Manganese | 1.5 max |
| Carbon | 0.25 max |
| Silicon | 0.5 max |
Monel K500 Washer Mechanical Properties
| Age-hardened bar | Value |
|---|---|
| Tensile strength | 965 MPa · 140 ksi |
| Yield strength 0.2% | 690 MPa · 100 ksi |
| Elongation | 20% |
Full chemistry, properties and equivalents are on the Monel K500 grade page.
Standards on this page
Other Monel K500 fasteners
Monel K500 Washers for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiMonel K500 Washer — questions buyers ask
Do I need washers on flange bolting?
Many specifications require through-hardened washers under nuts for controlled tightening; follow the project bolting spec.
Which standard covers Monel K500 washers?
The material is ASTM B865; dimensions follow ASME B18.22.1 · DIN 125. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Monel K500 washer?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
Can you supply Monel K500 washers to NACE MR0175?
Yes. Monel K500 is listed in NACE MR0175 / ISO 15156-3 within its limits; state NACE compliance on the order and it is confirmed on the certificate.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026