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Hastelloy X Bolts are high-performance nickel-chromium-iron-molybdenum alloy fasteners engineered for extreme thermal stability and oxidation resistance in temperatures exceeding 1000°C. Designed under UNS N06002 composition, these bolts are widely used in gas turbines, aerospace engine assemblies, industrial furnace systems, and chemical processing equipment where conventional stainless steel fasteners fail under thermal stress. Their ability to maintain mechanical integrity under cyclic heating conditions makes them critical in mission-critical engineering environments.
These fasteners deliver excellent resistance to carburization, oxidation, and stress corrosion cracking, ensuring long service life in aggressive atmospheres. Manufactured in compliance with ASTM and AMS specifications, Hastelloy X Bolts are preferred where both strength retention and dimensional stability are non-negotiable. KK Fasteners supplies these precision-engineered bolts to global OEMs and industrial contractors with full traceability and strict quality validation for high-temperature service applications.
| Parameter | Specification |
|---|---|
| Material | Hastelloy X (UNS N06002), Nickel-Chromium-Iron-Molybdenum Superalloy |
| Material Composition | Ni ~47%, Cr ~22%, Fe ~18%, Mo ~9%, Co ~1.5%, Mn/Si balance |
| Product Types | Hex Bolts, Socket Head Cap Screws, Stud Bolts, U-Bolts, Custom Fasteners |
| Size Range | M3 to M64 / 1/8" to 2.5" |
| Thread Standards | Metric (ISO), UNC, UNF, BSW |
| Applicable Standards | ASTM B435, AMS 5754, ASME SB435, DIN, ISO |
| Tensile Strength | 690 – 930 MPa (approx.) |
| Yield Strength | 275 – 450 MPa (approx.) |
| Hardness | 80 – 95 HRB |
| Temperature Resistance | Up to 1200°C (intermittent service conditions) |
| Surface Finish | Solution annealed, pickled, passivated, polished (optional) |
| Corrosion Resistance | Excellent resistance to oxidation, carburization, and thermal fatigue environments |
| Manufacturing Process | Hot forging, CNC machining, controlled heat treatment, precision threading |
| Inspection & Testing | Dimensional inspection, hardness test, tensile test, surface flaw detection, PMI testing |
| Certification | ISO 9001:2015, Material Test Certificate (MTC), RoHS & REACH compliant (on request) |
| Hastelloy X | Ni | C | Mo | Mn | Si | Fe | Cu | Ti | Co | Cr |
| Balance | 0.05-0.15 | 8.0-10.0 | 1.0 max | 1.0 max | 17.0-20.0 | 0.50 max | 0.15 max | 0.5-2.5 | 20.5-23.0 |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 9.2 g/cm3 | 1370 °C (2500 °F) | Psi – 51,000, MPa – 350 | Psi -1,10,000, MPa -760 | 40 % |
| STANDARD | UNS | WERKSTOFF NR. |
| Hastelloy X | N06002 | 2.4665 |
All measurements in millimeters
NOMINAL SIZE (D) |
BODY DIAMETER |
BOLT HEAD THICKNESS |
ACROSS THE FLATS |
ACROSS CORNERS |
||||
|---|---|---|---|---|---|---|---|---|
D (MAX) |
D (MIN) |
H (MAX) |
H (MIN) |
F (MAX) |
F (MIN) |
C (MAX) |
C (MIN) |
|
m10 |
10.00 |
9.78 |
6.63 |
6.17 |
17.00 |
15.73 |
18.48 |
17.77 |
m12 |
12.00 |
11.73 |
7.76 |
4.24 |
19.00 |
17.73 |
20.78 |
20.03 |
m14 |
14.00 |
13.73 |
9.09 |
8.51 |
22.00 |
20.67 |
24.25 |
23.35 |
m16 |
16.00 |
15.73 |
10.32 |
9.68 |
24.00 |
23.67 |
27.71 |
26.75 |
m20 |
20.00 |
19.67 |
12.88 |
12.12 |
30.00 |
29.16 |
34.64 |
32.95 |
m24 |
24.00 |
23.67 |
15.44 |
14.56 |
36.00 |
35.00 |
41.57 |
39.55 |
m30 |
30.00 |
29.67 |
19.48 |
17.92 |
46.00 |
45.00 |
53.12 |
50.85 |
m36 |
36.00 |
35.61 |
23.38 |
21.63 |
55.00 |
53.80 |
63.51 |
60.79 |
m42 |
42.00 |
41.38 |
26.97 |
25.03 |
65.00 |
62.90 |
75.06 |
71.71 |
m48 |
48.00 |
47.38 |
31.07 |
28.93 |
75.00 |
72.60 |
86.60 |
82.76 |
m56 |
56.00 |
55.26 |
36.2 |
33.80 |
85.00 |
82.20 |
98.15 |
93.71 |
m64 |
64.00 |
63.26 |
41.32 |
38.68 |
95.00 |
91.80 |
109.70 |
104.65 |
m72 |
72.00 |
71.26 |
46.45 |
43.55 |
105.00 |
101.40 |
121.24 |
115.60 |
m80 |
80.00 |
79.26 |
51.58 |
48.42 |
115.00 |
111.00 |
132.72 |
126.54 |
m90 |
90.00 |
89.13 |
57.74 |
54.26 |
130.00 |
125.50 |
150.11 |
143.07 |
m100 |
90.00 |
99.13 |
63.9 |
60.10 |
145.00 |
140.00 |
167.43 |
159.60 |
| MM THREADS AS PER IS 1363/67 | ||||||||||
| APPROXIMATE WEIGHT IN KGS FOR 100 NOS | ||||||||||
| LENGTH | DIAMETER | |||||||||
| M 5 | M 6 | M 8 | M 10 | M 12 | M 14 | M 16 | M 18 | M 20 | M 22 | |
| 16 mm | 0.448 | 0.743 | 1.590 | 3.211 | ||||||
| 20 mm | 0.598 | 0.812 | 1.711 | 3.411 | 4.892 | |||||
| 25 mm | 0.660 | 0.897 | 1.871 | 3.660 | 5.252 | 8.170 | ||||
| 30 mm | 0.737 | 1.010 | 2.070 | 3.912 | 5.574 | 9.690 | 10.707 | 18.657 | ||
| 35 mm | 0.804 | 1.120 | 2.271 | 4.223 | 5.974 | 10.000 | 11.416 | 16.026 | 19.608 | |
| 40 mm | 0.881 | 1.230 | 2.470 | 4.533 | 6.410 | 10.288 | 12.107 | 16.667 | 20.747 | |
| 45 mm | 0.958 | 1.340 | 2.671 | 4.840 | 6.859 | 10.504 | 12.821 | 17.241 | 21.739 | |
| 50 mm | 1.030 | 1.450 | 2.870 | 5.155 | 7.299 | 11.261 | 13.624 | 17.857 | 22.727 | 28.409 |
| 55 mm | 1.560 | 3.071 | 5.464 | 7.740 | 11.628 | 14.409 | 18.868 | 23.810 | 30.120 | |
| 60 mm | 1.670 | 3.270 | 5.774 | 8.183 | 12.255 | 15.244 | 20.000 | 25.126 | 32.051 | |
| 65 mm | 1.781 | 3.472 | 6.083 | 8.621 | 12.626 | 16.026 | 21.008 | 26.455 | 34.014 | |
| 70 mm | 1.890 | 3.671 | 6.394 | 9.058 | 12.987 | 16.835 | 22.124 | 27.778 | 35.461 | |
| 75 mm | 2.000 | 3.873 | 6.702 | 9.506 | 13.228 | 17.606 | 23.256 | 29.070 | 39.063 | |
| 80 mm | 2.111 | 4.072 | 7.013 | 10.000 | 13.889 | 18.248 | 24.510 | 30.303 | 40.000 | |
| 90 mm | 4.472 | 7.634 | 10.917 | 14.925 | 19.841 | 26.042 | 33.113 | 41.667 | ||
| 100 mm | 4.873 | 8.251 | 11.820 | 16.340 | 21.459 | 27.778 | 35.714 | 46.296 | ||
| 110 mm | 8.881 | 12.723 | 17.730 | 23.041 | 31.250 | 38.168 | 47.170 | |||
| 120 mm | 9.506 | 13.624 | 18.797 | 24.631 | 32.895 | 40.984 | 50.000 | |||
| 130 mm | 10.101 | 14.535 | 20.000 | 26.316 | 34.722 | 43.478 | 52.632 | |||
| 140 mm | 10.707 | 15.432 | 20.833 | 27.933 | 35.461 | 46.296 | 55.556 | |||
| 150 mm | 11.312 | 16.340 | 22.222 | 29.412 | 37.594 | 48.544 | 58.824 | |||
| 160 mm | 11.905 | 17.241 | 24.272 | 31.056 | 40.984 | 50.505 | 61.728 | |||
| 170 mm | 12.500 | 18.116 | 32.680 | 53.191 | 64.935 | |||||
| 180 mm | 13.123 | 19.011 | 26.882 | 34.247 | 55.556 | 67.568 | ||||
| 190 mm | 13.736 | 19.920 | 35.971 | 58.140 | 70.423 | |||||
| 200 mm | 14.327 | 20.833 | 29.586 | 37.594 | 49.020 | 60.976 | 73.529 | |||
| 220 mm | 15.528 | 22.624 | 40.650 | 65.789 | 79.365 | |||||
| 240 mm | 16.722 | 24.510 | 43.860 | 71.429 | 84.746 | |||||
| 250 mm | 17.301 | 25.381 | 45.455 | 74.627 | 87.719 | |||||
| 260 mm | 17.921 | 26.316 | 47.170 | 76.923 | 90.909 | |||||
| 280 mm | 19.157 | 28.090 | 50.505 | 81.967 | 98.039 | |||||
| 300 mm | 20.325 | 29.940 | 53.763 | 87.719 | 104.167 | |||||
| 320 mm | 31.646 | 56.818 | 92.593 | |||||||
| 340 mm | 33.557 | 60.241 | 98.039 | |||||||
| 360 mm | 35.211 | 63.291 | 104.167 | |||||||
| 380 mm | 37.037 | 66.667 | 108.696 | |||||||
| 400 mm | 39.063 | 69.444 | 113.636 | |||||||
Hastelloy X Bolts are used in environments where extreme heat, oxidation, and mechanical stress occur simultaneously. They are essential in systems that cannot tolerate fastener failure due to thermal fatigue or corrosion.
Hastelloy X Bolts are manufactured using precision hot forging followed by controlled heat treatment and solution annealing to achieve optimal grain structure. CNC machining ensures dimensional accuracy for threading and head geometry. Each batch undergoes hardness testing, tensile verification, and surface integrity inspection.
At KK Fasteners, every production lot is tracked with full material traceability, ensuring compliance with ISO 9001 quality management systems. Non-destructive testing and visual inspection protocols are applied to detect surface discontinuities or inclusions. Certificates such as material test reports (MTRs) are provided for every shipment, ensuring transparency for aerospace and industrial buyers.
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Hastelloy X Bolts are high-temperature fasteners manufactured from nickel-chromium-iron-molybdenum alloy UNS N06002. They are designed to maintain strength, oxidation resistance, and structural stability in extreme heat environments up to approximately 1200°C. These bolts are commonly used in aerospace engines, gas turbines, and industrial furnace systems where standard stainless steel fasteners fail under thermal stress.
Hastelloy X offers excellent resistance to oxidation, carburization, and thermal fatigue due to its balanced nickel and chromium content. It retains mechanical strength under continuous thermal cycling and resists creep deformation, making it ideal for combustion zones, turbine assemblies, and high-heat industrial equipment.
These bolts are typically manufactured in compliance with ASTM B435 and AMS 5754 specifications. They also follow ASME, DIN, and ISO dimensional standards depending on application requirements. These certifications ensure consistent chemical composition, mechanical strength, and reliability for critical engineering use.
Hastelloy X Bolts are widely used in gas turbines, jet engines, heat treatment furnaces, petrochemical plants, chemical reactors, and power generation systems. They are specifically chosen for environments involving extreme heat, oxidation exposure, and continuous mechanical stress.
A reliable manufacturer should offer ISO-certified production, full material traceability, ASTM/AMS compliance, in-house testing facilities, and proven export experience. Suppliers like KK Fasteners also provide material test certificates, engineering support, and customized fastening solutions for global industrial requirements.
Hastelloy X Bolts demand precision manufacturing and strict metallurgical control to perform in extreme environments without failure. With full export capability, certified quality systems, and engineering-driven production, KK Fasteners supports critical industries with reliable high-temperature fastening solutions.
Contact our engineering team to request a detailed specification sheet or get a customized quotation for your application requirements.
