Manufacturer, Exporter & Supplier of Incoloy 800 Fasteners

Incoloy 800 Fasteners for High-Temperature and Corrosion-Resistant Applications

Incoloy 800 fasteners are nickel-iron-chromium alloy fastening components engineered for high-temperature strength, oxidation resistance, and long-term structural stability in aggressive industrial environments. These fasteners comply with standards such as ASTM B408, ASTM B564, and ISO/DIN equivalents, making them suitable for critical assemblies in petrochemical processing, heat exchangers, and power generation systems.

The alloy’s controlled composition delivers excellent resistance to carburization and scaling at temperatures up to 1100°C, which is why engineers specify it for furnace components, pressure vessels, and thermal cycling systems. Unlike standard stainless steel fasteners, Incoloy 800 maintains mechanical integrity under prolonged exposure to heat and corrosive gases.

KK Fasteners supplies Incoloy 800 fasteners to global EPC contractors and OEMs, ensuring full material traceability, consistent metallurgy, and compliance with international project specifications.

Technical Specification List Of Incoloy 800 Fasteners

Material	Incoloy 800 (UNS N08800)
Grade	800 / 800H / 800HT
Size Range	M3 to M64 / 1/8” to 2”
Thread Type	Metric, UNC, UNF, BSW, BSF
Standards	ASTM B408, ASTM B564, DIN 933, ISO 4014, BS 4190
Types	Hex Bolts, Stud Bolts, Nuts, Washers, Socket Head Bolts
Surface Finish	Plain, Polished, Passivated
Tensile Strength	≥ 500 MPa
Yield Strength	≥ 210 MPa
Hardness	Max 201 HB

Chemical Composition Of Incoloy 800 Fasteners

Grade		Mn	C	Si	S	Fe	Al-Ti	Cr	Ni
Incoloy 800 Fasteners	min.	–	–	–	–	39.5	0.15	19.0	30.0
Incoloy 800 Fasteners	max.	1.5	0.1	1.0	0.015	–	0.60	23.0	35.0
Incoloy 800H Fasteners	min.	–	0.05	–	–	39.5	0.15	19.0	30.0
Incoloy 800H Fasteners	max.	1.5	0.1	1.0	0.015	–	0.60	23.0	35.0
Incoloy 800HT Fasteners	min.	–	0.06	–	–	39.5	0.85/0.25	19.0	30.0
Incoloy 800HT Fasteners	max.	1.5	0.1	1.0	0.015	–	1.20/0.60	23.0	35.0

Mechanical Properties Of Incoloy 800 Fasteners

Incoloy 800 Fasteners Grade	Yield Strength 0.2% Proof (MPa) min	Tensile Strength (MPa) min	Elongation (% in 50mm) min	Hardness
				Brinell (HB) max	Rockwell B (HR B) max
Incoloy 800-H-HT Fasteners	Psi – 30,000 , MPa –205	Psi – 75,000 , MPa – 520	30	–	–

Equivalent Grades of Incoloy 800 Fasteners

STANDARD	UNS	OR	WERKSTOFF NR.	BS	JIS	AFNOR	GOST	EN
Incoloy 800H Fasteners	N08810	XH32T	1.4958 / 1.4876	NA 15(H)	NCF 800H	Z8NC33-21	ЭИ670	X5NiCrAlTi31-20
Incoloy 800 Fasteners	N08800	XH32T	1.4876	NA 15	NCF 800	Z8NC32-21	ЭИ670	X10NiCrAlTi32-20
Incoloy 800HT Fasteners	N08811	XH32T	1.4859 / 1.4876	NA 15(HT)	NCF 800HT	–	ЭИ670	X8NiCrAlTi32-21

Incoloy 800 Nut Weight Chart

Size	Heavy Hex	Finished Hex	Square	Heavy Square	Finished Jam
5⁄8“ Nut	11.9	7.33	10.8	14.3	4.93
1⁄2“ Nut	6.54	3.75	5.78	7.87	2.62
7⁄8“ Nut	29.7	19.0	24.5	36.2	12.0
3⁄4“ Nut	19.3	11.9	15.4	23.5	7.70
11⁄8“ Nut	59.2	40.3	52.5	72.4	24.7
11⁄4“ Nut	78.6	54.3	70.6	95.5	36.1
1″ Nut	42.5	28.3	36.3	51.5	17.6
11⁄2“ Nut	131	94.3	122	161	60.9
13⁄8“ Nut	102	73.0	94.5	125.0	47.9
13⁄4“ Nut	204	151			100
15⁄8“ Nut	162
2″ Nut	299	224			140
17⁄8“ Nut	241
21⁄2“ Nut	564
21⁄4“ Nut	419
4″ Nut	2180			1200
3″ Nut	950
23⁄4“ Nut	738
31⁄2“ Nut	1526
31⁄4“ Nut	1194
33⁄4“ Nut	1812

Incoloy 800 Stud Bolt Size

AS PER IS 1363/67 MILLIMETER THREADS
IN KILOGRAM FOR 100 NOS APPROXIMATE WEIGHT
LENGTH	DIAMETER
LENGTH	M 6	M 5	M 10	M 8	M 14	M 12	M 18	M 22	M 16	M 20
16 millimeter	0.743	0.448	3.211	1.590
20 millimeter	0.812	0.598	3.411	1.711		4.892
25 millimeter	0.897	0.660	3.660	1.871	8.170	5.252
30 millimeter	1.010	0.737	3.912	2.070	9.690	5.574			10.707	18.657
35 millimeter	1.120	0.804	4.223	2.271	10.000	5.974	16.026		11.416	19.608
40 millimeter	1.230	0.881	4.533	2.470	10.288	6.410	16.667		12.107	20.747
45 millimeter	1.340	0.958	4.840	2.671	10.504	6.859	17.241		12.821	21.739
50 millimeter	1.450	1.030	5.155	2.870	11.261	7.299	17.857	28.409	13.624	22.727
55 millimeter	1.560		5.464	3.071	11.628	7.740	18.868	30.120	14.409	23.810
60 millimeter	1.670		5.774	3.270	12.255	8.183	20.000	32.051	15.244	25.126
65 millimeter	1.781		6.083	3.472	12.626	8.621	21.008	34.014	16.026	26.455
70 millimeter	1.890		6.394	3.671	12.987	9.058	22.124	35.461	16.835	27.778
75 millimeter	2.000		6.702	3.873	13.228	9.506	23.256	39.063	17.606	29.070
80 millimeter	2.111		7.013	4.072	13.889	10.000	24.510	40.000	18.248	30.303
90 millimeter			7.634	4.472	14.925	10.917	26.042	41.667	19.841	33.113
100 millimeter			8.251	4.873	16.340	11.820	27.778	46.296	21.459	35.714
110 millimeter			8.881		17.730	12.723	31.250	47.170	23.041	38.168
120 millimeter			9.506		18.797	13.624	32.895	50.000	24.631	40.984
130 millimeter			10.101		20.000	14.535	34.722	52.632	26.316	43.478
140 millimeter			10.707		20.833	15.432	35.461	55.556	27.933	46.296
150 millimeter			11.312		22.222	16.340	37.594	58.824	29.412	48.544
160 millimeter			11.905		24.272	17.241	40.984	61.728	31.056	50.505
180 millimeter			13.123		26.882	19.011		67.568	34.247	55.556
170 millimeter			12.500			18.116		64.935	32.680	53.191
200 millimeter			14.327		29.586	20.833	49.020	73.529	37.594	60.976
190 millimeter			13.736			19.920		70.423	35.971	58.140
240 millimeter			16.722			24.510		84.746	43.860	71.429
220 millimeter			15.528			22.624		79.365	40.650	65.789
260 millimeter			17.921			26.316		90.909	47.170	76.923
250 millimeter			17.301			25.381		87.719	45.455	74.627
300 millimeter			20.325			29.940		104.167	53.763	87.719
280 millimeter			19.157			28.090		98.039	50.505	81.967
340 millimeter						33.557			60.241	98.039
320 millimeter						31.646			56.818	92.593
380 millimeter						37.037			66.667	108.696
360 millimeter						35.211			63.291	104.167
400 millimeter						39.063			69.444	113.636

Types of Incoloy 800 Fasteners

Incoloy 800 Anchor Bolts

Incoloy 800 Allen Bolts

Incoloy 800 Carriage Bolts

Incoloy 800 Eye Bolts

Incoloy 800 Elevator Bolts

Incoloy 800 Hollow Hex Bolts

Incoloy 800 Hex Bolts

Incoloy 800 Lag Bolts

Incoloy 800 J Bolts

Incoloy 800 Machine Bolts

Incoloy 800 Stud Bolts

Incoloy 800 Square Head Bolts

Incoloy 800 Nylock Nuts

Incoloy 800 Jam Nuts

Incoloy 800 Hex Cap Nuts

Incoloy 800 Coupling Nuts

Incoloy 800 Square Thin Nuts

Incoloy 800 Self Drilling Screws

Incoloy 800 Cheese Head Screws

Incoloy 800 Socket Head Cap Screws

Incoloy 800 Flange Head Screws

Incoloy 800 Dome Head Screws

Incoloy 800 Tap End Stud Bolts

Incoloy 800 Double End Stud Bolts

Incoloy 800 Fender Washers

Incoloy 800 Countersunk Washers

Incoloy 800 Self Locking Washers

Incoloy 800 Tab Washers

Incoloy 800 Square Bevel Washers

Incoloy 800 Square Washers

Incoloy 800 Spring Lock Washers

Incoloy 800 Plain Flat Washers

Different Types of Incoloy 800 Fasteners Bolts

Inconel 800 Flanged Bolts
Inconel 800 Hex Bolts
Inconel 800 U Bolts
Inconel 800 Shoulder Bolts
Inconel 800 Eye Bolts
Inconel 800 Heavy Hex Bolts
Inconel 800 Hollow Hex Bolts
Inconel 800 Hollow Allen Bolts
Inconel 800 Machine Bolts
Inconel 800 Socket Head Bolts
Inconel 800 Hex Flange Bolts
Inconel 800 Lag Bolts
Inconel 800 J Bolts
Inconel 800 Elevator Bolts
Inconel 800 Hanger Bolts
Inconel 800 Carriage Bolts
Inconel 800 Allen Bolts
Inconel 800 Anchor Bolts
Inconel 800 Countersunk Bolts
Inconel 800 Stud Bolts
Inconel 800 Square Head Bolts
Inconel 800 Stud Bolts
Inconel 800 Full Threaded Stud Bolts
Inconel 800 Tap End Stud Bolts
Inconel 800 Double End Stud Bolts
Inconel 800 Reduced Shank Stud Bolts
Inconel 800 Flange Bolting Stud Bolts
Inconel 800 Weld Studs
Inconel 800 Threaded Rods
Inconel 800 Hex Head Bolts
Inconel 800 Jack Bolts
Inconel 800 Structural Bolts
Inconel 800 Step Bolts
Inconel 800 Square Head Machine Bolts
Inconel 800 Plow Bolts
Inconel 800 Metric Bolts
Inconel 800 Hex Tap Bolts
Inconel 800 Hex Machine Bolts
Inconel 800 Shoulder Eye Bolts
Inconel 800 Serrated Flange Bolts
Inconel 800 Turned Eye Bolts
Inconel 800 Long Bolts
Inconel 800 Bent Bolts
Inconel 800 Square U Bolts
Inconel 800 Timber Bolts
Inconel 800 12 Point Flange Bolts
Inconel 800 Button Head Bolts
Inconel 800 Hexagon Flange Bolts
Inconel 800 Stud Bolts
Inconel 800 Hexagon Head Bolts
Inconel 800 Lifting Eye Bolts
Inconel 800 T Bolts
Inconel 800 Threaded Bolts

Different Types of Incoloy 800 Nuts

Inconel 800 Flanged Nuts
Inconel 800 Hex Nuts
Inconel 800 Square Nuts
Inconel 800 T Nuts
Inconel 800 Nylock Nuts
Inconel 800 Lock Nuts
Inconel 800 Heavy Hex Nuts
Inconel 800 Jam Nuts
Inconel 800 Coupling Nuts
Inconel 800 Hex Cap Nuts
Inconel 800 Hex Flange Nuts
Inconel 800 Hex Weld Nuts
Inconel 800 Square Thin Nuts
Inconel 800 Square Weld Nuts
Inconel 800 Acorn Nuts
Inconel 800 Lifting Eye Nuts
Inconel 800 Wing Nuts
Inconel 800 T-Slot Nuts
Inconel 800 Nylock Jam Nuts
Inconel 800 K Lock Nuts
Inconel 800 2 Way Lock Nuts
Inconel 800 All Metal Lock Nuts
Inconel 800 Slotted Castle Nuts
Inconel 800 12 Point Flange Nuts
Inconel 800 Lug Nuts
Inconel 800 Open Lug Nuts
Inconel 800 Dome Nuts
Inconel 800 Hex Machine Screw Nuts
Inconel 800 Hex Lock Nuts Nylon Insert
Inconel 800 Hex Jam Nuts
Inconel 800 Hex Jam Nylon Lock Nuts
Inconel 800 Cap Nuts
Inconel 800 Prevailing Torque Lock Nuts
Inconel 800 Top Lock Nuts
Inconel 800 Pin-Lock Nuts
Inconel 800 Castle Nuts
Inconel 800 Flange Nuts Serrated
Inconel 800 Machine Hex Nuts
Inconel 800 Finished Hex Nuts
Inconel 800 Forged Eye Nut
Inconel 800 Rivet Nuts
Inconel 800 Slotted Hex Nuts
Inconel 800 Acme Hex Nuts
Inconel 800 Anco Locknuts
Inconel 800 Flexloc Nuts
Inconel 800 Reversible Lock Nuts
Inconel 800 Panel Nut
Inconel 800 Poly Nut
Inconel 800 Conelock Nut
Inconel 800 Self Clinching Nuts
Inconel 800 Domed Cap Nuts
Inconel 800 Imperial Thread Nuts
Inconel 800 Imperial Thread Nylock Nuts
Inconel 800 Sleeve Nuts
Inconel 800 Thin Nuts
Inconel 800 Weld Nuts
Inconel 800 High Nuts
Inconel 800 Cage Nuts
Inconel 800 Security Nuts
Inconel 800 Imperial Nuts
Inconel 800 Industrial Nuts
Inconel 800 Miscellaneous Nuts
Inconel 800 Insert Nuts
Inconel 800 Knurled Nuts
Inconel 800 Round Nuts

Different Types of Incoloy 800 Screws

Inconel 800 Hex Cap Screws
Inconel 800 Socket Cap Screws
Inconel 800 Square Head Screws
Inconel 800 Flange Head Screws
Inconel 800 Button Head Screws
Inconel 800 Round Head Screws
Inconel 800 Oval Head Screws
Inconel 800 Hammer Head Screws
Inconel 800 Truss Head Screws
Inconel 800 Dome Head Screws
Inconel 800 Pan Head Screws
Inconel 800 Cheese Head Screws
Inconel 800 Knurled Head Screws
Inconel 800 Mushroom Head Screws
Inconel 800 Fillister Head Screws
Inconel 800 T Head Screws
Inconel 800 Countersunk Screws
Inconel 800 Set Screws
Inconel 800 Coach Screws
Inconel 800 Mating Screws
Inconel 800 Wood Screws
Inconel 800 Butterfly Screws
Inconel 800 Self Drilling SMS
Inconel 800 Thread Cutting
Inconel 800 Thread Forming
Inconel 800 Thumb Screws
Inconel 800 Self Tapping Screws
Inconel 800 Machined Screw
Inconel 800 Self Drilling Screws
Inconel 800 Phillips Head Screws

Different Types of Incoloy 800 Washers

Inconel 800 Spring Washers
Inconel 800 Machined Washers
Inconel 800 Square Washers
Inconel 800 Plain Flat Washers
Inconel 800 Spring Lock Washers
Inconel 800 Tab Washers
Inconel 800 Internal Tab Washers
Inconel 800 Square Beveled Washers
Inconel 800 Hex Washers
Inconel 800 External Tooth Lock Washers
Inconel 800 Internal Tooth Lock Washers
Inconel 800 Curved Wave Washers
Inconel 800 Conical Spring Washers
Inconel 800 Self Locking Washers
Inconel 800 Dock Washers
Inconel 800 Fender Washers
Inconel 800 Ogee Washers
Inconel 800 Sealing Washers
Inconel 800 Countersunk Washers
Inconel 800 Finishing Washers

Key Technical Features

Designed for sustained operation at temperatures up to 1100°C, ensuring structural reliability in furnaces and heat exchangers.
High resistance to oxidation and carburization minimizes material degradation in chemical processing environments.
Maintains mechanical strength under creep conditions, making it suitable for long-duration thermal exposure.
Controlled nickel-iron-chromium composition enhances resistance to chloride stress corrosion cracking.
Precision-machined threads meet ISO and DIN tolerances, ensuring proper load distribution and secure fastening.
Compatible with aggressive media including acids, steam, and flue gases used in industrial systems.
Non-magnetic properties in annealed condition improve performance in specialized electrical and instrumentation setups.
Available in multiple forms such as stud bolts and hex fasteners for flexibility in design and maintenance operations.

Industry Applications

Incoloy 800 fasteners are used in high-temperature and corrosive environments where conventional fasteners fail due to oxidation, scaling, or creep deformation.

Petrochemical Plants — Used in reactors, reformers, and piping systems exposed to high heat and corrosive hydrocarbons.
Power Generation Facilities — Secures turbine components, boilers, and heat recovery systems operating under thermal stress.
Heat Exchangers — Ensures leak-proof assembly in high-temperature fluid transfer systems.
Industrial Furnaces — Applied in structural frameworks and internal fixtures exposed to extreme heat cycles.
Chemical Processing Units — Used in equipment handling acids and oxidizing agents.
Oil & Gas Refineries — Supports pressure vessel and pipeline assemblies requiring high creep resistance.
Aerospace Components — Selected for high-temperature fastening in engine-related systems.
Marine Engineering — Performs reliably in saltwater environments combined with heat exposure.

Manufacturing & Quality Assurance

Incoloy 800 fasteners are produced through hot forging followed by CNC machining to achieve precise dimensional tolerances. Thread rolling or cutting processes are carefully controlled to maintain structural integrity and surface finish quality. Each batch undergoes stringent inspection, including dimensional verification, tensile strength testing, hardness evaluation, and visual surface checks.

KK Fasteners follows a structured quality system aligned with ISO 9001 standards, ensuring traceability from raw material heat numbers to final dispatch. Additional testing such as PMI (Positive Material Identification) and third-party inspection can be provided based on project requirements. Compliance with RoHS and REACH directives is also maintained for global supply.

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Incoloy 800 Fasteners - FAQs

What are Incoloy 800 fasteners?

Incoloy 800 fasteners are high-performance industrial fasteners made from a nickel-iron-chromium alloy. They are specifically designed to perform in high-temperature and corrosive environments, offering excellent resistance to oxidation, carburization, and thermal creep in critical applications.

Which grades are available in Incoloy 800 fasteners?

The commonly available grades include Incoloy 800, 800H, and 800HT. Grade 800 is used for general high-temperature applications, while 800H and 800HT provide enhanced creep strength and are preferred for prolonged exposure to temperatures above 600°C.

What standards apply to Incoloy 800 fasteners?

Incoloy 800 fasteners are typically manufactured in accordance with ASTM B408 and ASTM B564 standards, along with international specifications such as DIN, ISO, and BS. These standards ensure consistency in material composition, dimensions, and mechanical performance.

How do I select the right Incoloy 800 fastener for my application?

Selection depends on operating temperature, load conditions, and environmental exposure. For high-temperature applications exceeding 600°C, grades like 800H or 800HT are recommended due to their improved creep resistance and structural stability.

How can I find a reliable Incoloy 800 fastener manufacturer and exporter?

A reliable supplier should offer ISO-certified manufacturing, full material traceability, and compliance with global standards. KK Fasteners supplies Incoloy 800 fasteners with documented quality checks and supports international project requirements.

Incoloy 800 Fasteners - Export Destination

Incoloy 800 Fasteners Supplier in North America

Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States.

Incoloy 800 Fasteners Supplier Fasteners in South America

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.

Incoloy 800 Fasteners Supplier in Europe

Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic (Czechia), Denmark, Estonia, Finland, France, Germany, Greece, Holy See, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Russia, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom.

Incoloy 800 Fasteners Supplier in Asia

Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, Cyprus, Georgia, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Maldives, Mongolia, Myanmar, Nepal, Oman, Pakistan, Palestine, Philippines, Qatar, Saudi Arabia, Singapore, South Korea, Sri Lanka, State of Palestine, Syria, Taiwan, Tajikistan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates, Uzbekistan, Vietnam, Yemen.

Incoloy 800 Fasteners Supplier in Australia

Australia, Fiji, Kiribati, Marshall Islands, Micronesia, Nauru, New Zealand, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu.

For high-temperature fastening applications where material stability and compliance matter, Incoloy 800 fasteners provide a reliable solution across demanding industries. KK Fasteners supports global buyers with consistent metallurgy, inspection-backed quality, and flexible manufacturing options. To discuss specifications or request a quote, connect with the engineering team for application-specific guidance.

Incoloy 800 Fasteners