INCONEL 600 WASHERS - UNS N06600 / WNR 2.4816
■ Metric Flat Washer Dimensions (ISO 7089 / DIN 125) (mm)
| NOMINAL BOLT SIZE |
INSIDE DIAMETER (Min) |
OUTSIDE DIAMETER (Max) |
THICKNESS (Nominal) |
| M6 |
6.40 |
12.00 |
1.60 |
| M8 |
8.40 |
16.00 |
1.60 |
| M10 |
10.50 |
20.00 |
2.00 |
| M12 |
13.00 |
24.00 |
2.50 |
| M16 |
17.00 |
30.00 |
3.00 |
| M20 |
21.00 |
37.00 |
3.00 |
| M24 |
25.00 |
44.00 |
4.00 |
■ Imperial Flat Washer Dimensions (ASME B18.22.1 - Type A Narrow) (Inches)
| NOMINAL BOLT SIZE |
INSIDE DIAMETER (Min) |
OUTSIDE DIAMETER (Max) |
THICKNESS (Nominal) |
| 1/4" |
0.281 |
0.625 |
0.065 |
| 3/8" |
0.406 |
0.875 |
0.065 |
| 1/2" |
0.531 |
1.062 |
0.095 |
| 5/8" |
0.656 |
1.312 |
0.095 |
| 3/4" |
0.812 |
1.500 |
0.134 |
| 1" |
1.062 |
2.000 |
0.134 |
Note: Flat washers act as the primary bearing surface to distribute massive compressive loads, preventing galling of the parent material during thermal cycling.
■ Washer-Specific Technical Specifications
| Material (Flat Washers) |
Inconel 600 (Nickel-Chromium-Iron Solid-Solution Alloy). Typically punched or machined from plate, sheet, or strip conforming to ASTM B168 / ASME SB168. |
| Flat Washer Standards |
- ISO 7089 / DIN 125 (Metric Standard)
- ASME B18.22.1 (Imperial Inch-Series)
|
| Dynamic Washers (Spring & Conical) |
Utilized to manage thermal relaxation and compensate for stress/creep.
- Helical Spring Lock Washers: DIN 127 B / ASME B18.21.1
- Belleville (Conical) Washers: DIN 6796
|
| Important Metallurgical Consideration |
While Inconel 600 flat washers resist oxidation up to 2000°F (1095°C), the alloy suffers from severe stress relaxation (creep) when used as a dynamic spring above 700°F (370°C). For Belleville or spring washers operating continuously above 700°F, substitution with Inconel X-750 (UNS N07750) is strictly recommended to maintain spring temper. |
