SIST EN 3008:2001

Aerospace series - Bolts, hexagon head, relieved shank, long thread, in heat resisting base alloy NI-P100HT (Inconel 718) - Classification: 1 275 MPa (at ambient temperature)/650 °C

This standard specifies the characteristics of hexagon headed bolts with relieved shank and long thread, in NI-P100HT, for aerospace applications. Classification: 1275 MPa/650°C.

Luft- und Raumfahrt - Sechskantschrauben, Dünnschaft, langes Gewinde, aus hochwarmfester Nickelbasislegierung NI-P100HT(Inconel 718) - Klasse: 1 275 MPa (bei Raumtemperatur)/650°C

Diese Norm legt die Eigenschaften von Sechskantschrauben mit Dünnschaft und langem Gewinde, aus NI-P100HT, zur Verwendung in der Luft- und Raumfahrt fest. Klasse: 1275 MPa/650°C.

Série aérospatiale - Vis a tete hexagonale, fut dégagé, filetage long, en alliage résistant a chaud a base de nickel NI-P100HT (Inconel 718) - Classification: 1 275 MPa (a température ambiante)/650°C

La présente norme spécifie les caractéristiques des vis à tête hexagonale à fût dégagé et à filetage long, en NI-P100HT, pour les applications aérospatiales. Classification: 1275 MPa/650°C.

Aerospace series - Bolts, hexagon head, relieved shank, long thread, in heat resisting base alloy NI-P100HT (Inconel 718) - Classification: 1 275 MPa (at ambient temperature)/650°C

General Information

• Status: Published
• Publication Date: 31-Dec-2000
• ICS: 49.030.20 - Bolts, screws, studs
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2001
• Due Date: 01-Jan-2001
• Completion Date: 01-Jan-2001
• Ref Project: EN 3008:1998 - Aerospace series - Bolts, hexagon head, relieved shank, long thread, in heat resisting base alloy NI-P100HT (Inconel 718) - Classification: 1 275 MPa (at ambient temperature)/650 °C

Relations

• Refers: SIST EN 2583:2019 - Aerospace series - Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718) - Classification: 1 275 MPa (at ambient temperature)/650°C - Technical specification
• Effective Date: 28-Jan-2026
• Refers: SIST EN 12513:2001 - Founding - Abrasion resistant cast irons
• Effective Date: 28-Jan-2026
• Refers: SIST EN 2424:2008 - Aerospace series - Marking of aerospace products
• Effective Date: 28-Jan-2026

Overview

SIST EN 3008:2001 is a European standard developed by CEN for the aerospace industry, defining the requirements for bolts with hexagon heads, relieved shanks, and long threads. These bolts are manufactured from the heat-resisting base alloy NI-P100HT, also known as Inconel 718. The standard ensures high mechanical strength and temperature resistance, specifically classifying the bolts for use at a tensile strength of 1,275 MPa (measured at ambient temperature) and operational effectiveness up to 650°C. This makes them ideally suited for demanding aerospace environments where both thermal and structural reliability are critical.

Key Topics

• Material Specification: NI-P100HT (Inconel 718), a widely recognized nickel-based superalloy, known for its superior heat resistance and mechanical strength at elevated temperatures.
• Bolt Design: Features a hexagon head, a relieved (or thin) shank to reduce stress concentrations, and an extended thread length for enhanced grip and assembly flexibility.
• Mechanical Classification: Certified for use at 1,275 MPa tensile strength and operational up to 650°C, meeting the requirements for high-stress applications in aerospace engineering.
• Dimensional Consistency: Precise manufacturing tolerances ensure compatibility with standardized aerospace components.
• Quality Assurance: Bolts produced under SIST EN 3008:2001 are subject to rigorous quality control processes to meet international aerospace safety and reliability standards.

Applications

SIST EN 3008:2001 bolts are specifically designed for:

• Aerospace Assemblies: Used in aircraft and spacecraft structures where resistance to high temperatures and extreme stress is essential.
• Engine Components: Suitable for turbine engines, exhaust systems, and other high-heat areas requiring both strength and corrosion resistance.
• Critical Fastening Points: Ideal for load-critical and safety-critical joints throughout an aircraft’s airframe and subsystems.
• Other Industries: Applicable in high-performance automotive, marine, and energy sectors where similar environmental stresses exist and Inconel 718’s properties offer practical advantages.

The use of SIST EN 3008:2001 compliant bolts ensures that components meet industry expectations for longevity, safety, and reliability in the most demanding operational conditions.

Related Standards

Organizations involved in aerospace engineering and mechanical fastening may also refer to:

• EN 2874: Aerospace series - Hexagon bolts, close tolerance shank, made from similar or related alloys.
• EN 3156: Aerospace series - Requirements and tests for mechanical fasteners in high-temperature environments.
• EN ISO 898-1: Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws, and studs.
• ISO 8839: Mechanical fasteners - Bolts, screws, studs, and nuts - Heat grades and mechanical properties.

Compliance with SIST EN 3008:2001 and related specifications supports the integrity and interoperability of aerospace hardware across international programs, ensuring consistent performance and safety worldwide.

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By specifying bolts under SIST EN 3008:2001, manufacturers and engineers benefit from standardized, high-performance fasteners designed for the stresses of modern aerospace applications-effectively supporting quality assurance, certification, and long-term serviceability goals.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts, hexagon head, relieved shank, long thread, in heat resisting base alloy NI-P100HT (Inconel 718) - Classification: 1 275 MPa (at ambient temperature)/650°CLuft- und Raumfahrt - Sechskantschrauben, Dünnschaft, langes Gewinde, aus hochwarmfester Nickelbasislegierung NI-P100HT(Inconel 718) - Klasse: 1 275 MPa (bei Raumtemperatur)/650°CSérie aérospatiale - Vis a tete hexagonale, fut dégagé, filetage long, en alliage résistant a chaud a base de nickel NI-P100HT (Inc
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