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Incoloy 800H/HT Bolts & Nuts Suppliers. Incoloy Studs Bolts, Hex Nuts & Bolts

Incoloy 800/800H/800HT Nuts, Bolts, Fasteners


Incoloy 800HT Bolts & Stud Bolts Manufacturers & Suppliers, Incoloy 800H/HT Hex Head Bolts & Nuts, Inconel 800H/HT Threaded Bars with Washers

  • Incoloy 800H/HT Fastener Products: Incoloy 800H/HT Hex Head Bolts, Incoloy 800H/HT U Bolts, Eyelet Bolts, Incoloy 800H/HT Hex Nuts, Incoloy 800H/HT Washers, Incoloy 800H/HT Stud Bolts, Incoloy 800H/HT Threaded Rods
  • Our Manufacturing Size Ranges from M6 to M100, 1/4″ to 4″ with Varied Lengths

Metline is a full line manufacturer of Incoloy 800H/HT nuts and bolts in accordance with DIN, ASME, ASTM and ISO standards. Incoloy 800H/HT nuts and bolts can be used above approximately 593 °C where higher resistance to creep and rupture is required. The most commonly used Incoloy Alloys for manufacturing nuts and bolts are Incoloy 800, Incoloy 800H and Incoloy Alloy 800HT.


Specialist Manufacturers & Suppliers of Incoloy 800 Bolts, Incoloy 800H/800HT Stud Bolts, Alloy 800 Hex Nuts & Threaded Rods

**Incoloy® is a registered trademark of the Special Metals Corporation group of companies

Metline is a specialist manufacturer and supplier of Incoloy 800 HT bolts, and Incoloy stud bolts with nuts and washers. We offer hot forged Incoloy 800/800H/800HT bolts and nuts up to 2″ Dia, and custom length. Our CNC machined Incoloy bolts and stud bolts can be offer in sizes upto M100 / 4” Dia in custom lengths.

Incoloy 800,Incoloy 800H , and Incoloy 800HT are nickel-iron-chromium super alloys. When exposed to high-temperature these alloys not only provide excellent resistance to oxidation and carburization but also good strength too. These nickel steel alloys are similar except for the higher level of carbon in Incoloy 800H, and the addition of up to 1.20 percent titanium and aluminum in Incoloy 800HT.

Equivalents & Grades of Incoloy Alloy Bolts, Nuts, Studs & Threaded Bars

WERKSTOFF NR.1.48761.4958 / 1.48761.4959 / 1.4876
BSNA 15NA 15(H)NA 15(HT)

Incoloy Alloys Chemical Composition %

NI30.0 – 35.030.0 – 35.030.0 – 35.0
CR19.0 – 23.019.0 – 23.019.0 – 23.0
FE39.5 min39.5 min39.5 min
MN1.5 max1.5 max1.5 max
C0.10 max0.05 – 0.100.06 – 0.10
CU0.75 max0.75 max0.75 max
SI1.0 max1.0 max1.0 max
S0.015 max0.015 max0.015 max
AL0.15 – 0.600.15 – 0.600.15 – 0.60
TI0.15 – 0.600.15 – 0.600.15 – 0.60
* UNS N08811 : Al + Ti = 0.85 – 1.20

Incoloy Alloys Mechanical & Physical Properties

MELTING POINT2475 – 2525 °F/ 1357 – 1385 °C
SPECIFIC HEAT @ 70°F0.11 Btu/lb•°F
PERMEABILITY @ 70°F ANNEALED1.014 (200 Oersted)
ELASTIC MODULUS28.50 X 106 psi
ELECTRICAL RESISTIVITY @ 70°F595 ohm•circ mil/ft
ANNEALLING INCOLOY 800983 – 1038 °C / 1800 – 1900 °F
ANNEALLING INCOLOY 800H / HT1147 – 1177°C / 2100 – 2150 °F
QUENCHRapid Air / Water


Density7.94 g/cm3
Melting Point1385 °C (2525 °F)
Tensile StrengthPsi – 75,000 , MPa – 520
Yield Strength (0.2%Offset)Psi – 30,000 , MPa – 205

Additional information


Normal Dia : ¼" to 4" 6-100 mm
Length : As Specified by user or Upto any Length

Surface Finish

Blackening, Cadmium Zinc plated, Galvanized, Hot Dip Galvanized, Nickel Plated, Buffing, P.T.F.E. Coated


Metric, BSW, BSF, UNC, UNF, and as per costumers requirement


A nut is a type of fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads' friction, a slight stretch of the bolt, and compression of the parts.


DIN 6915 CI. 10, Stainless Steel AISI 304 / 316. Heavy hex nuts ASTM A194 Gr.8, 8M
ASTM A 194 Gr. 2H, 2HM, G4, G7, G7M, A563/A563M Gr. A, B, DH / 8S/ 10S.
DIN934 / BS3692 CI.6, 8, 10, 12. BS4395 Part 1 & 2


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