INCONEL 601 NUTS - UNS N06601 / W.NR. 2.4851
■ ASME B18.2.2 Heavy Hex Nut Dimensions (Inches)
| NOMINAL SIZE |
WIDTH ACROSS FLATS (F) |
THICKNESS (H) |
| 1/2" |
7/8" |
31/64" |
| 5/8" |
1-1/16" |
39/64" |
| 3/4" |
1-1/4" |
47/64" |
| 7/8" |
1-7/16" |
55/64" |
| 1" |
1-5/8" |
63/64" |
| 1-1/8" |
1-13/16" |
1-7/64" |
| 1-1/4" |
2" |
1-7/32" |
| 1-1/2" |
2-3/8" |
1-15/32" |
Note: Heavy hex nuts are preferred for high-temperature bolted joints to distribute clamping loads over a wider footprint, preventing embedding when flange materials soften at extreme temperatures.
■ Metric DIN 934 (ISO 4032) Hex Nut Dimensions (mm)
| THREAD SIZE (D) |
PITCH (P) |
WIDTH ACROSS FLATS (S Max) |
THICKNESS (M Max) |
| M6 |
1.00 |
10.0 |
5.2 |
| M8 |
1.25 |
13.0 |
6.8 |
| M10 |
1.50 |
16.0 |
8.4 |
| M12 |
1.75 |
18.0 |
10.8 |
| M16 |
2.00 |
24.0 |
14.8 |
| M20 |
2.50 |
30.0 |
18.0 |
| M24 |
3.00 |
36.0 |
21.5 |
| M30 |
3.50 |
46.0 |
25.6 |
■ Nut-Specific Technical Specifications
| Material Advantage |
Inconel 601 (UNS N06601). The precise addition of 1.0% to 1.7% aluminum creates a spall-resistant bi-layer oxide scale, preventing the delicate internal thread profiles from being consumed by cyclic oxidation up to 1250°C (2282°F). |
| ASTM F2281 Classifications |
Type III, Class A (High Temperature, Nickel Alloy Grades). Mandatory face markings verify heat treatment:
- F3A (Condition A): Standard annealed.
- F3B (Condition CWA): Cold-formed and re-annealed.
- F3C (Condition HWA): Hot-formed and re-annealed.
|
| Installation & Galling Prevention |
High risk of thread galling (cold welding) due to base alloy ductility. Dry installation is strictly prohibited. A generous application of specialized, high-temperature anti-seize compound is mandatory to reduce the K-Factor and prevent fusion of the nut and bolt matrices. |
