Aluminum 7075 Fasteners
RAYCHIN SPECIALTY METALS FASTENERS: BOLTS, NUTS, SCREWS, WASHERS, STUDS, THREADED RODS, U-BOLT, J-BOLTS
STANDARD AND CUSTOMIZED, SMALL BATCH AND LARGE BATCH, IMPERIAL AND METRIC
Key Attributes
High strength compared to other aluminum alloys
Lightness: Aluminum weighs about one third of steel
Good fatigue strength
Good ductility and toughness
Economic strength-to-weigh ratio
Low density
Non-magnetic
Usable to ~752˚F / 400˚C
Good fatigue resistance and toughness
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RAYCHIN LIMITED
Specialist in Aluminum 7075 Fasteners · Bolts · Nuts · Screws · Washers · Stud Bolts · Threaded Rods · CustomAluminum 7075 Fasteners: High-Strength Lightweight Bolts, Nuts, Screws, Washers, Stud Bolts & Threaded Rods for Aerospace & Performance Applications
RAYCHIN LIMITED is a recognized expert in Aluminum 7075 fasteners — from 7075 aluminum bolts, 7075 aluminum nuts, 7075 aluminum screws, 7075 aluminum washers, 7075 aluminum stud bolts, 7075 aluminum threaded rods to custom non-standard configurations. Aluminum 7075 is a 7000-series aluminum alloy with zinc as the primary alloying element. It is one of the highest strength aluminum alloys commercially available, with a strength-to-weight ratio exceeding that of many steels. Known as a premium aircraft-grade material, 7075 aluminum offers exceptional mechanical properties while being approximately 60% lighter than steel. The alloy achieves its peak strength through precipitation hardening, typically in the T6 or T73 tempers. Our portfolio includes fasteners manufactured to NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS standards. Engineered for applications where weight reduction and high strength are critical. Aluminum 7075 fasteners are available in various tempers with full traceability and third-party certifications.
Complete Range of Aluminum 7075 Fasteners – Types & Configurations
Aluminum 7075 Bolts
7075 aluminum bolts manufactured to DIN 931, DIN 933, ISO 4014, ISO 4017, ASME B18.2.1, and NAS/NAS aerospace standards. Available in hex head, heavy hex, and flange head configurations. Ideal for aerospace structures, motorsport components, and lightweight assemblies requiring high strength-to-weight ratio. Available in T6 and T73 tempers. Sizes from M3 to M48 (metric) and #2 to 1-1/2" (inch). Precision rolled threads for superior strength. Weight is approximately one-third that of steel bolts.
Aluminum 7075 Nuts
7075 aluminum nuts manufactured to DIN 934, ISO 4032, ISO 4033, ISO 4034, and ASME B18.2.2 standards. Available in hex nuts, heavy hex nuts, jam nuts, and lock nuts. Precision tapped to Class 2B and 3B tolerances for reliable engagement. Ideal for weight-critical applications in aerospace, defense, and automotive racing. Available in T6 and T73 tempers. Sizes from M3 to M48 (metric) and #2 to 1-1/2" (inch). Proof load testing ensures compatibility with mating bolts.
Aluminum 7075 Screws
7075 aluminum screws including hex head screws, socket head cap screws (DIN 912, ISO 4762, ASME B18.3), flat head screws, button head screws, pan head screws, and set screws. Available with various drive types including hex socket, Torx, and Phillips. Ideal for instrument mounting, panel fasteners, and non-safety-critical structural applications. Available in multiple tempers with optional anodized finishes for enhanced corrosion resistance and aesthetic appeal. Sizes from M2 to M36.
Aluminum 7075 Washers
7075 aluminum washers manufactured to DIN 125, DIN 9021, ISO 7089, ISO 7093, and ASME B18.22.1 standards. Available in flat washers, heavy washers, and spring washers. Precision stamped or machined from 7075 aluminum, these washers provide uniform load distribution while minimizing weight. Ideal for aerospace assemblies, racing components, and lightweight structures. Sizes from M2 to M48 and #2 to 2". Available in various tempers and finishes.
Aluminum 7075 Stud Bolts
7075 aluminum stud bolts manufactured to DIN 938, DIN 939, DIN 976, ASME B16.5, and ASME B18.31.2 standards. Available in double-end studs, fully threaded studs, and tap-end studs. Designed for flange connections, pressure vessel closures, and structural applications where weight savings are critical. Sizes from 1/4" to 1-1/2" (M6 to M36) in various lengths. Available in T6 and T73 tempers. Threads are precision rolled for superior fatigue resistance.
Aluminum 7075 Threaded Rods
7075 aluminum threaded rods manufactured to DIN 975, DIN 976, ASME B18.31.1M, and ASME B18.31.2 standards. Continuous threads along the entire length allow for cutting to any required length for custom applications. Ideal for lightweight structural supports, tension applications, and adjustable assemblies. Available in diameters from M4 to M36 (metric) and #6 to 1-1/4" (inch) in standard lengths up to 3 meters. Precision rolled threads for superior strength and consistency.
Key Benefits of Aluminum 7075 Fasteners
Exceptional Strength-to-Weight Ratio
With a density of only 2.8 g/cm³ and ultimate tensile strength up to 572 MPa in T6 temper, 7075 aluminum offers one of the highest strength-to-weight ratios of any commercial alloy. Approximately 60% lighter than steel while maintaining comparable strength levels.
High Strength in Multiple Tempers
Available in T6 temper for maximum strength (572 MPa UTS, 503 MPa YS) and T73 temper for improved stress corrosion cracking resistance with slightly reduced strength (480-510 MPa UTS). T73 temper is specifically developed to enhance resistance to stress corrosion cracking.
Excellent Fatigue Resistance
7075 aluminum exhibits outstanding fatigue strength (110-190 MPa), making it ideal for aerospace and motorsport applications subject to cyclic loading. Fatigue resistance comparable to many steels at a fraction of the weight.
Good Machinability & Formability
7075 aluminum offers excellent machinability in the T6 and T73 tempers, allowing for precision thread rolling and complex geometries. Cold forming of heads and thread rolling produces superior fatigue strength and dimensional accuracy.
Anodizing Capability
Readily anodized to improve corrosion resistance and wear characteristics. Chemical brightening and color anodizing (black, blue, gold, red, purple, silver) to between 8-12 microns thickness provides both protection and aesthetic appeal.
Temperature Performance
Maintains useful mechanical properties up to 200°C (400°F) maximum service temperature. Excellent low-temperature performance with toughness retained down to cryogenic temperatures. Not recommended for elevated temperature service above 200°C.
Manufacturing Standards for Aluminum 7075 Fasteners
RAYCHIN LIMITED manufactures Aluminum 7075 fasteners to the following national and international standards, ensuring full compliance for projects worldwide. Both standard and non-standard custom configurations are available.
International Standards & Global Designations for Aluminum 7075 Fasteners
To serve clients worldwide, RAYCHIN LIMITED manufactures Aluminum 7075 fasteners from material conforming to the following national and international specifications.
UNS A97075 EN AW-7075 3.4365 AlZn5.5MgCu 2L95 A7075 7075-T6 7075-T73
Chemical Composition (Weight %) – Aluminum 7075 (UNS A97075 / EN AW-7075)
Our Aluminum 7075 fasteners are produced from melts that strictly conform to the limits below per ASTM B209 / EN 573-3. Zinc is the primary alloying element, forming strengthening precipitates with magnesium. Copper further enhances strength, while chromium improves stress corrosion cracking resistance.
Expert note: Zinc and magnesium combine to form MgZn₂ (eta phase) precipitates during aging, which provide the exceptional strength of 7075 aluminum. Copper addition further increases strength through solid solution and precipitation effects. Chromium is added to control grain structure and improve stress corrosion cracking resistance. The alloy is heat-treatable, with T6 temper providing maximum strength and T73 temper offering enhanced resistance to stress corrosion cracking at a slight strength reduction.
Complete Mechanical Properties of Aluminum 7075 Fasteners
Aluminum 7075 fasteners are supplied in various tempers depending on application requirements. The data below represent typical properties for common tempers.
Mechanical Properties by Temper
Physical Properties
Elevated Temperature Properties
Aluminum 7075 maintains useful mechanical properties up to approximately 200°C (400°F). Maximum mechanical service temperature is 200°C. Above this temperature, over-aging occurs rapidly and strength decreases significantly. The alloy retains excellent toughness at cryogenic temperatures.
Corrosion Resistance of Aluminum 7075 Fasteners
Aluminum 7075 has moderate corrosion resistance that can be significantly enhanced through proper temper selection and surface treatment.
General Corrosion Behavior
7075 aluminum is susceptible to stress corrosion cracking in high-strength tempers like T6. The T73 temper was specifically developed to improve resistance to stress corrosion cracking while sacrificing approximately 10-15% of tensile strength. For critical applications in corrosive environments, T73 temper is recommended.
Stress Corrosion Cracking Resistance
T6 Temper: High strength but susceptible to SCC. Requires protective coatings for service in corrosive environments. Not recommended for sustained tensile stress in marine or chemical environments without protection.
T73 Temper: Over-aged temper with significantly improved SCC resistance. Developed specifically to mitigate SCC susceptibility while maintaining high strength. Preferred for applications where stress corrosion is a concern.
Surface Protection Options
- Anodizing (Type II): Sulfuric acid anodizing produces a protective oxide layer 8-12 microns thick. Available in various colors including black, blue, gold, red, purple, and silver.
- Hard Anodizing (Type III): Thicker oxide layer for enhanced wear and corrosion resistance.
- Chromate Conversion Coating: Provides corrosion protection and improves paint adhesion.
- PTFE Coating: Adds lubricity and corrosion resistance for specific applications.
Resistance to Other Media
Aluminum 7075 Temper Selection Guide
The selection of temper is critical for optimizing performance in specific applications.
T6 / T651 Temper
Characteristics: Peak strength condition, maximum tensile and yield strength. Achieved by solution heat treatment followed by artificial aging.
Applications: Aerospace structural components, high-performance racing parts, stressed members where maximum strength is required and corrosion protection is provided.
Properties: UTS 540-572 MPa, YS 470-503 MPa, elongation 5-11%.
T73 Temper
Characteristics: Over-aged condition with slightly lower strength but significantly improved stress corrosion cracking resistance.
Applications: Aerospace components exposed to corrosive environments, marine applications, parts under sustained tensile stress where SCC is a concern.
Properties: UTS 480-510 MPa, YS 400-440 MPa, elongation 9-13%, enhanced SCC resistance.
Non-Isothermal Aging (NIA)
Characteristics: Advanced heat treatment process that can achieve improved combinations of strength and corrosion resistance.
Properties: Can achieve hardness up to 183.5 HV with wear rates as low as 4.5 × 10⁻³ mm³/m and intergranular corrosion depth of only 20.1 μm.
Special focus: Aluminum 7075 Fasteners for Critical Applications
For applications requiring high strength with minimal weight, RAYCHIN offers Aluminum 7075 fasteners manufactured to aerospace, industrial, and customer-specific specifications. Our capabilities include:
- Aerospace & Defense: Aircraft structural fasteners, wing attachment bolts, fuselage panel screws, missile components, satellite hardware, NAS and AN specification fasteners.
- Motorsport & Racing: Chassis bolts, suspension fasteners, engine component screws, lightweight body panel attachments, racing harness mounting points.
- Bicycle & Sports Equipment: Frame bolts, component mounting screws, lightweight assemblies, high-performance sporting goods.
- Precision Machinery: Instrument mounting, jig and fixture hardware, robotic component fasteners, lightweight positioning devices.
- Medical Equipment: Lightweight structural fasteners, portable device assembly, imaging equipment components.
- Consumer Electronics: Premium device fasteners, lightweight chassis assembly, aesthetic anodized screws.
- Standards: DIN 931, DIN 933, DIN 934, DIN 912, DIN 938, DIN 939, DIN 975, DIN 976 (metric); ASME B18.2.1, ASME B18.2.2, ASME B18.3, ASME B16.5 (inch); NAS, AN, MS (aerospace).
- Tempers: T6 (maximum strength), T73 (improved SCC resistance), T651 (stress-relieved).
- Thread Classes: 2A, 3A, UNJF-3A, 6g, 6H.
- Sizes: M2 through M48, #0 through 1-1/2".
- Finish Options: Clear anodize, color anodize (black, blue, gold, red, purple, silver), PTFE coated, as-machined.
- Certifications: EN 10204 3.1/3.2 material certifications, material traceability, full dimensional inspection.
All Aluminum 7075 fasteners are supplied with full traceability and third-party NDT upon request. Material certifications included. Note: Aluminum 7075 fasteners are not recommended for safety-critical stress applications or where sustained elevated temperatures above 200°C are expected.
Why RAYCHIN LIMITED – The Aluminum 7075 Fastener Authority
Metallurgical competence
Engineers on staff with deep expertise in aluminum alloys and heat treatment. We ensure proper temper selection and processing for optimal performance across all Aluminum 7075 fasteners. Every heat is verified by in-house PMI testing to confirm chemistry. With precise control over T6 and T73 tempers, our fasteners provide the exact balance of strength and corrosion resistance required for your application.
Global approvals & traceability
Our quality system is ISO 9001:2015 and AS9100D certified; we also comply with NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS. Full material traceability from melt to final packaging (EN 10204 3.1/3.2). Third-party inspections (ABS, DNV, Lloyds) available. All Aluminum 7075 fasteners meet applicable aerospace and industrial standards.
Precision forming & thread rolling
In-house cold heading and precision thread rolling capabilities ensure consistent head dimensions and thread geometry. Heads are cold formed and shanks thread rolled for superior fatigue strength. Precision rolled threads provide superior dimensional accuracy and surface finish. 100% thread inspection available. Anodizing to 8-12 microns with chemical brightening for optimal appearance and protection.
Custom solutions
Need a special head style, unusual thread configuration, or custom material certification for your lightweight application? Our engineering team works with you to produce custom Aluminum 7075 fasteners to your drawing. We provide specialized tempers, anodized finishes, and custom packaging per customer requirements.
Contact the Aluminum 7075 fastener experts today
Request a quote for Aluminum 7075 bolts, nuts, screws, washers, stud bolts, threaded rods & custom configurations – any global standard (NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN, KS), any quantity. Inquire about aerospace-grade lightweight fasteners, T6 or T73 tempers, or custom anodized finishes.
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