Alloy 330 Flat Head Screws
Alloy 330 Flat Head Screws are specifically designed for high temperature furnace applications such as vacuum furnaces, heat treating and brazing applications. The most prized trait of alloy 330 is its ability perform under cyclic conditions of temperature extremes from heating and cooling; as well as in alternate carburizing and oxidizing atmospheres. An austenitic, nickel-chromium-iron-silicon alloy, Alloy 330 Flat Head Screws also offer industry a low coefficient of expansion, excellent ductility, and high strength.
An engineered high temperature resistant steel
Excellent high temperature stability and chemistry and specifications
Very oxidation and carburization resistant to 2100°F
Good resistance to thermal shock and quenching
Alloy 330 chemistry and specifications
Strength and mechanical properties
ASTM F2281 specification for Alloy 330
Alloy 330 Datasheet
Benefits & Corrosion Resistance
Resistance to thermal shock from repeated quenching
High level of resistance to oxidation and carburization
Ability to handle thermal cycling
Provides resistance to scale formation up to about 2000°F
Good resistance to nitrogen-containing atmospheres where the oxygen content is low
High nickel content of 34-37% provides high resistance to chloride stress corrosion cracking and embrittlement
Applications for Alloy 330 Flat Head Screws
Alloy 330 Flat Head Screws are often used in furnaces, thermal processing and heat treating applications.
Gas turbine components and boiler fixtures used in power generation often use Alloy 330 Flat Head Screws.
Because of its resistance to nitrogen rich environments, Alloy 330 Flat Head Screws are used extensively for components handling cracked ammonia.
| Alloy 330 Properties |
| Tensile Strength (ksi) | 80-85 |
| Yield Strength (ksi) | 30-43 |
| Elongation in 2” | 40-45 |
| Rockwell B Hardness | 70-85 |
| Density (lb/in3) | 0.292 |
| Specific Heat (Btu/lb/°F (32°-212°F) | 0.11 |
| Modulus of Elasticity Tension | 28.5 |
Resources: Alloy 330 Torque Specs
Alloy 330 Fastener Types: Bolts, Nuts, Screws, Studs, Threaded Rods, Washers
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
Alloy 330 Fastener Styles
| Alloy 330 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 |
| Alloy 330 Bolts | Hex Head Bolts Shoulder Bolts Wedge Anchor Bolts | • DIN 931
• DIN 933
• ISO 4014
• ISO 4017
• ISO 7370 |
| Alloy 330 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 |
| Alloy 330 Studs/Rod | Studs Threaded Rod Weld Studs | • DIN 975
• DIN 976 |
| Alloy 330 Washers | Flat Washers Lock Washer | • DIN 125 / ISO 7089 / ISO 7090
• DIN 126 / ISO 7091
• DIN 127 / ISO 7090
• DIN 9021 / ISO 7093 |
| Alloy 330 Hose Clamps | Medium Duty Hose Clamps |
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Alloy 330 Screws
12 Point Screws | Alloy 330 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 | Alloy 330 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 | Alloy 330 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 Alloy 330 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 | Alloy 330 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 | Alloy 330 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 Alloy 330 screws resistance to unwanted tampering or removal due to the fact that they cannot be removed using an ordinary driver. Alloy 330 security screws are available in several different drive styles, as well as custom per print. |
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Set Screws | Alloy 330 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 | Alloy 330 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 | Alloy 330 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. Alloy 330 vented screws are available in any style. |
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Alloy 330 Bolts
Hex Head Bolts | Alloy 330 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 | Alloy 330 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 | Alloy 330 wedge anchor bolts offer a safe secure fastening solution for attaching equipment and other materials to concrete in corrosive environments. |
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Alloy 330 Nuts
Hex Nuts | Alloy 330 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 | Alloy 330 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 |
Alloy 330 Studs & Threaded Rods
Studs | Alloy 330 studs are fully threaded or partially threaded and made to custom lengths. | • ASME B18.31.2
• DIN 976 |
 Threaded Rod | Alloy 330 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 | Alloy 330 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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Alloy 330 Washers
Flat Washers | Alloy 330 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 | Alloy 330 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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Alloy 330 (1.4864) Chemistry and Specifications
Alloy 330 (UNS N08330) is best known for its extreme high temperature strength and stability. One of the most unique attributes of Alloy 330 (1.4864) is its ability to handle cyclic temperature changes from extreme high temperatures to cooling phases, as well as in oxidation-rich environements.
Alloy 330 Specifications: UNS N08330, AMS 5592, AMS 5716, ASME SB 511, ASME SB 536, ASTM B 511, ASTM B 512, ASTM B 535, ASTM B 536, ASTM B 546, ASTM B 710, ASTM B 739, EN 10095, Werkstoff 1.4886, ASTM F2281
| Alloy 330 | Cr | Ni | Mn | Si | Cu | P | S | C | Fe |
| Min% | 18.0 | 34.0 | - | 1.00 | - | - | - | 0.04 | - |
| Max% | 20.0 | 37.0 | 2.00 | 1.50 | 1.0 | 0.03 | 0.08 | 0.08 | balance |
Threaded Rod
Alloy 330 Fasteners
