Incoloy Security Screws
Not to be confused with Inconel, Incoloy fasteners are made of a nickel alloy which contains iron and a lower content of nickel. Incoloy is essentially a more economical option to Inconel, yet with more restricted corrosion resistance and temperature limits. Typically, Incoloy is an ideal material for long-term exposure in high temperature environments due to its oxidation, carburization and creep resistance. Incoloy is widely used for its resistance to seawater, brine, sour gas and high chloride environments at elevated temperatures, which make it a popular choice in the oil and gas and power industries.
A Ni-Cr alloy with very good high temperature stability
Oxidization and carburization resistant up to 1400°F / 760°C
Good corrosion resistance, which increases with the various grades
The most commonly used grades of Incoloy fasteners are Incoloy 800, 800H, 800HT; Incoloy 825; and Incoloy 925. For more indepth information on these specific grades, contact one of our engineering experts:
Incoloy 800, 800H, 800HT (1.4876, 1.4958, 1.4959)
Incoloy 825 (2.4858)
Incoloy 925
Datasheets: Incoloy 800, 800H 800HT; Incoloy 825; and Incoloy 925
Resources:
Incoloy Security Screws Types:
12 Point Screws, Button Head Cap Screws, Flat Head Screws, Hex Cap Screw, Pan Head Screws, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws, Torx Screws
Custom Availability
Diameter sizes: Standard #00 – 4” in diameter / Metric M1.2 – M100
Threads: UNC, UNF, UNJ, UNR, Rolled,Cut
Minimum Volume – Typically 10pcs, depending on size and stock
Custom to print
Incoloy Fastener Styles
| Incoloy Screws | 12 Point Screws Button Head Cap Screws Flat Head Screws Hex Head Cap Screws Pan Head Screws Security Screws Set Screws Socket Head Cap Screws Vented Screws | • DIN 603 / ISO 8677 • DIN 912 / ISO 4762 • DIN 913 / ISO 4026 • DIN 914 / ISO 4027 • DIN 915 / ISO 4028 • DIN 916 / ISO 4029 • DIN 921 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017 • DIN 961 / ISO 8676 • DIN 965 / ISO 7046 • DIN 966 / ISO 7047 • DIN 7991 / ISO 10642 • DIN 7380 / ISO 7380 • DIN 84 / ISO 1207 • DIN 85 / ISO 1580 • DIN 34822 • DIN 34821 • DIN 7504 / ISO 15480 • DIN 7984 • DIN 963 / ISO 2009 |
| Incoloy Bolts | Hex Head Bolts Shoulder Bolts Wedge Anchor Bolts | • DIN 931
• DIN 933
• ISO 4014
• ISO 4017
• ISO 7370 |
| Incoloy Nuts | Hex Nuts Lock Nuts | • DIN 439 / ISO 4035
• DIN 934 / ISO 4032
• DIN 985 / ISO 7040
• DIN 986
• DIN 980 / ISO 7042 / ISO 19513
• DIN 6923 / ISO 4161 |
| Incoloy Studs/Rod | Studs Threaded Rod Weld Stud | • DIN 975
• DIN 976 |
| Incoloy Washers | Flat Washers Lock Washers | • DIN 125 / ISO 7089 / ISO 7090
• DIN 126 / ISO 7091
• DIN 127 / ISO 7090
• DIN 9021 / ISO 7093 |
| Incoloy Hose Clamps | Medium Duty Hose Clamps |
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Incoloy Screws
12 Point Screws | Incoloy 12 point screws allow for higher torque to be applied than a socket head cap screw or head head bolt, however they are be less economical due to the complex head design. Available in 1/4" or larger sizes. | • IFI-115
• MIL SPEC
• DIN 34822
• DIN 34821 |
Button Head Cap Screws | Incoloy button head screws offer a wide clamping area and low profile. They are best for fastening material that is too thin to counter bore. | • ASME B18.3
• ASME 18.3.4M
• DIN 7380 / ISO 7380 |
Flat Head Screws | Incoloy flat head screws are most commonly offered in an 82° countersink angle, but can be customized to other angles from 60° -120° and are designed to be flush with the surface. Available in slotted and socket drivers. Phillips, 6-lobe, torx and tamperproof drivers in Incoloy flat head screws can be made require special manufacturing. | • ASME B18.3
• ASME B18.3.6
• DIN 963 / ISO 2009
• DIN 965 / ISO 7046
• DIN 7991 / ISO 10642 |
Hex Head Cap Screws | Incoloy hex head cap screws offer the added washer face to the bolt head which is lacking on a hex bolt and tighter dimensional tolerances. Ideal for a high clamping force applications with ease of access. Generally availabe in #2 - 1/2" sizes and metric sizes. | • ASME B18.6.3
• DIN 931 / ISO 4014
• DIN 933 / ISO 4017
• DIN 961 / ISO 8676 |
Pan Head Screws | Incoloy pan head screws offer a rounded top are best used for small diameter faster needs. Offered in slotted and they are ideal for low torque applications. | • ASME B18.6.3
• DIN 7985
• DIN 921
• DIN 85 / ISO 1580
• DIN 84 / ISO 1207
(cheese head)
• DIN 966 / ISO 7047
(raised counter sunk) |
Security Screws | Unique driver designs offer these Incoloy screws resistance to unwanted tampering or removal due to the fact that they cannot be removed using an ordinary driver. Incoloy security screws are available in several different drive styles, as well as custom per print. |
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Set Screws | Incoloy set screws are available in cup, cone, flat, dog and half-dog points. Set screws have no head and are equiped with a socket or slotted driver at one end. | • ASME B18.3
• DIN 913 / ISO 4026
• DIN 914 / ISO 4027
• DIN 915 / ISO 4028
• DIN 916 / ISO 4029 |
Socket Head Cap Screws | Incoloy socket head cap screws are ideal for limited access situations where there is little clearance around the screws. They offer a safe, reliable and economic solution. | • ASMET B18.3
• DIN 912 / ISO 4762
• DIN 7984 |
Vented Screws | Incoloy vented screws are best for vacuum environments because the hole drilled through its axis (from head through threads) allow gases and other contaminents to vent. Incoloy vented screws are available in any style. |
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Incoloy Bolts
Hex Head Bolts | Incoloy hex bolts are similar to hex head cap screws but without the added washer face. They are ideal for high clamping force applications with ease access. | • ASME B18.2.1
• DIN 931 / ISO 4014
• DIN 933 / ISO 4017 |
Shoulder Bolts | Incoloy shoulder bolts are made up of a head, shoulder and threaded segment. The smooth shoulder section allows for rotating parts. Typically available with socket drivers. | • ASME
• DIN 7379 / ISO 7379
• ISO 7370 |
Wedge Anchor Bolts | Incoloy wedge anchor bolts offer a safe secure fastening solution for attaching equipment and other materials to concrete in corrosive environments. |
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Incoloy Nuts
Hex Nuts | Incoloy hex nuts are available in a variety of styles including finished hex nuts, jam nuts and heavy hex nuts. | • ASME B18.16.3
• ASME B18.2.2
• DIN 439 / ISO 4035
• DIN 934 / ISO 4032
• DIN 986 |
Lock Nuts | Incoloy lock nuts are available in all metal and polymer insert styles. All-metal lock provide even load distribution and can be used at high temperatures. Polymer insert styles are more economical and are best for temperatures under than 350°F. | • ASME B18.16.3M
• DIN 980 / ISO 7042 /
ISO 19513
• DIN 6923 / ISO 4161
• DIN 985 / ISO 10511 /
ISO 7040 |
Incoloy Studs & Threaded Rod
Studs | Incoloy studs are fully threaded or partially threaded and made to custom lengths. | • ASME B18.31.2
• DIN 976 |
Threaded Rod | Incoloy threaded rod or all thread are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 feet of length. | • ASME B1.1
• DIN 975 |
Weld Studs | Incoloy weld studs are available in both arc or capacitor discharge (CD) styles. Weld studs provide an extremely secure fastening solution when one side of the stud needs to be permanently fix to a part and the other side with the threads accessible. |
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310 Stainless Steel Washers
Flat Washers | Incoloy washers are most commonly offered in SAE sizes, but also availabe in USS, oversized and custom sizes upon request. | • ASME 18.21.1
• SAE / USS
• DIN 125 / ISO 7089 /
ISO 7090
• DIN 126 / ISO 7091 |
Lock Washers | Incoloy lock washers are offered as split lock washers. Belleville spring lock washers can also be made upon request. | • ASME B18.21.1
• DIN 127 / ISO 7090
• DIN 6796 / ISO 10690
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Common Incoloy Chemistry, Grades & Specifications
Incoloy 800, 800H, H800HT (1.4876, 1.4958, 1.4959)
Incoloy 800 series fasteners are best utilized for applications that require stable structure and good strength during prolonged exposure to high temperatures.
Incoloy 800, 800H & 800HT Specifications: UNS N08800/ N08810 / N08811 (800, 800H, 800HT), ASTM B408, ASME SB408, ASTM B564/ASME SB564, EN 10204-3.1, Material 1.4876 (800), Material 1.4876 H and 1.4958 (800H), Material 1.4876 HT and 1.4959 (800HT)
Incoloy 800
| Incoloy 800 | Ni | Fe | Cr | C | AL | T1 | AL-T1 |
| Min% | 30 | 39.5 | 19 | - | 0.15 | 0.15 | 0.3 |
| Max % | 35 | - | 23 | 0.1 | 0.6 | 0.6 | 1.2 |
Incoloy 800H
| Incoloy 800H | Ni | Fe | Cr | C | AL | T1 | AL-T1 |
| Min% | 30 | 39.5 | 19 | 0.05 | 0.15 | 0.15 | 0.3 |
| Max % | 35 |
| 23 | 0.1 | 0.6 | 0.6 | 1.2 |
Incoloy 800H
| Incoloy 800H | Ni | Fe | Cr | C | AL | T1 | AL-T1 |
| Min% | 30 | 39.5 | 19 | 0.06 | 0.25 | 0.25 | 0.85 |
| Max % | 35 | - | 23 | 0.1 | 0.6 | 0.6 | 1.2 |
Incoloy 825 (2.4858)
Related to the Incoloy 800 series alloys, Incoloy 825 (2.4858) differentiates itself with the additional elements of molybdenum and copper, which provides it improved corrosion resistance.
Incoloy 825 Specifications: UNS N08825, BS 3076NA16, ASTM B 425, ASTM B 564, ASME SB 425, ASME SB 564, ASME Code Case N-572, DIN 17752, DIN 17753, DIN 17754, VdTÜV 432, ISO 9723, ISO 9724, ISO 9725, Werkstoff Nr 2.4858
| Incoloy 825 | Ni | Fe | Cr | Mo | Cu | Ti | C | Mn | S | Si | Al |
| Min % | 38 | 22 | 19.5 | 2.5 | 1.5 | 0.6 | - | - | - | - | - |
| Max % | 46 | - | 2.35 | 3.5 | 3.0 | 1.2 | 0.05 | 1.0 | 0.03 | 0.5 | 0.2 |
Incoloy 925
Incoloy 925 is a precipitation hardened alloy. It offers comparable corrosion resistance to it’s sister alloy Incoloy 825, but with the increased strength resulting from the age hardening process.
Incoloy 925 Specifications: UNS N09925, ASTM B637, NACE MR0175
| Incoloy 925 | Ni | Fe | Cr | Mo | Cu | Ti | C | Mn | S | Si | Al | Nb |
| Min % | 42 | 22 | 19.5 | 2.5 | 1.5 | 1.9 | - | - | - | - | 0.1 | - |
| Max % | 46 | - | 22.5 | 3.5 | 3.0 | 2.4 | 0.03 | 1.0 | 0.03 | 0.5 | 0.5 | 0.5 |
Incoloy Fasteners