INCONEL 601 WASHERS - UNS N06601
■ Metric DIN 125 (ISO 7089) Flat Washer Dimensions (mm)
| NOMINAL THREAD SIZE |
HOLE INNER DIAMETER |
OUTSIDE DIAMETER |
NOMINAL THICKNESS |
| 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 |
| M14 |
15.00 |
28.00 |
2.50 |
| M16 |
17.00 |
30.00 |
3.00 |
| M20 |
21.00 |
37.00 |
3.00 |
| M24 |
25.00 |
44.00 |
4.00 |
| M30 |
31.00 |
56.00 |
4.00 |
■ Imperial ASTM F436 Structural Flat Washer Dimensions (Inches)
| NOMINAL SIZE |
INSIDE DIAMETER (Min / Max) |
OUTSIDE DIAMETER (Min / Max) |
THICKNESS (Min / Max) |
| 1/4" |
0.281 / 0.313 |
0.593 / 0.657 |
0.051 / 0.080 |
| 5/16" |
0.344 / 0.376 |
0.656 / 0.720 |
0.051 / 0.080 |
| 3/8" |
0.406 / 0.438 |
0.781 / 0.845 |
0.051 / 0.080 |
| 7/16" |
0.469 / 0.501 |
0.890 / 0.954 |
0.051 / 0.080 |
| 1/2" |
0.531 / 0.563 |
1.031 / 1.095 |
0.097 / 0.177 |
| 5/8" |
0.688 / 0.720 |
1.281 / 1.345 |
0.122 / 0.177 |
| 3/4" |
0.813 / 0.845 |
1.436 / 1.500 |
0.122 / 0.177 |
| 7/8" |
0.938 / 0.970 |
1.718 / 1.782 |
0.136 / 0.177 |
| 1" |
1.063 / 1.126 |
1.937 / 2.063 |
0.136 / 0.177 |
■ Metric DIN 127 Helical Spring Split Lock Washers (mm)
| NOMINAL THREAD SIZE |
INNER DIAMETER d1 min. |
| M24 |
24.50 |
| M27 |
27.50 |
| M30 |
30.50 |
| M36 |
36.50 |
| M39 |
39.50 |
Note: DIN 127 helical spring washers are utilized in high-temperature applications subjected to heavy vibration to create immense frictional resistance against rotational loosening.
■ Washer-Specific Technical Specifications
| Material & Thermal Limit |
Inconel 601 (UNS N06601). Solid-solution Nickel-Chromium-Iron with added Aluminum for extraordinary oxidation and thermal degradation resistance up to 1250°C (2282°F). |
| Manufacturing Standards |
- ASTM B168 (Plate, Sheet, Strip) / ASTM B166 (Bar)
- ASTM F2281 (Type III, Class A)
|
| Mechanical Properties (Annealed) |
- Tensile Strength (Min): 80,000 psi (550 MPa)
- Yield Strength (Min): 30,000 psi (205 MPa)
- Hardness: 65 - 85 HRB
|
| Primary Engineering Functions |
1. Distributes immense clamping loads to prevent localized flange crushing/embedment.
2. Mitigates thread galling (cold welding) by providing a smooth, controlled bearing surface beneath the rotating nut, significantly reducing friction during torque application.
|
