SIST EN 3112:2001

Aerospace series - Bolts, normal hexagonal head, threaded to head, in alloy steel, cadmium plated - Classification: 900 MPa (at ambient temperature) / 235 °C

This standard specifies the characteristics of bolts, normal hexagonal head, threaded to head, in alloy steel, cadmium plated. Classification : 900 MPa 1)/ 235 °C 2)

Luft- und Raumfahrt - Sechskantschrauben, Gewinde annähernd bis Kopf, aus legiertem Stahl, verkadmet - Klasse: 900 MPa (bei Raumtemperatur) / 235 °C

Diese Norm legt die Eigenschaften von Sechskantschrauben, mit Gewinde annäherndbis Kopf, aus legiertem Stahl, verkadmet, fest. Klasse: 900 MPa 1)/ 235 °C 2).

Série aérospatiale - Vis a tete hexagonale normale, filetées jusqu'a proximité de la tete, en acier allié, cadmiées - Classification: 900 MPa (a température ambiante) / 235 °C

La présente norme spécifie les caractéristiques des vis à tête hexagonale normale, filetées jusqu'à proximité de la tête, en acier allié, cadmiées. Classification: 900 MPa 1)/235 °C 2).

Aerospace series - Bolts, normal hexagonal head, threaded to head, in alloy steel, cadmium plated - Classification: 900 MPa (at ambient temperature) / 235 °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 3112:1995 - Aerospace series - Bolts, normal hexagonal head, threaded to head, in alloy steel, cadmium plated - Classification: 900 MPa (at ambient temperature) / 235 °C

Overview

SIST EN 3112:2001 is a European standard developed by CEN that defines specifications for aerospace bolts with a normal hexagonal head. These bolts are threaded to the head, made from alloy steel, and cadmium plated for enhanced corrosion resistance. The standard classifies these bolts with a strength of 900 MPa at ambient temperature and suitability for use up to 235 °C. SIST EN 3112:2001 ensures consistent quality and performance of critical fasteners used in aerospace applications, addressing both mechanical strength and environmental durability.

Key Topics

• Bolt Type: Normal hexagonal head bolts with threading extending close to the head.
• Material: Alloy steel, chosen for its high strength-to-weight ratio ideal for aerospace components.
• Surface Treatment: Cadmium plating, providing corrosion protection especially important in harsh aerospace environments.
• Mechanical Classification:
  • Tensile strength of 900 MPa at ambient temperature.
  • Temperature rating up to 235 °C, suitable for elevated temperature operations.
• Dimensional and Manufacturing Requirements: Ensures compatibility and interchangeability in aerospace assemblies.
• Compliance and Standardization: Aligns bolt production to a unified standard across European aerospace manufacturers.

Applications

SIST EN 3112:2001 bolts are critical components in aerospace engineering used in:

• Aircraft structural assemblies where reliability under mechanical stress and temperature variations is essential.
• Engine components that experience elevated operational temperatures up to 235 °C.
• Landing gear, avionics mounting, and airframe joints requiring high-strength fasteners with corrosion resistance.
• Aerospace maintenance and repair operations needing standardized replacement parts.
• Other high-performance applications demanding strength, durability, and resistance to environmental degradation.

Related Standards

• EN 1665 - Aerospace series - Self-locking nuts for bolts or screws.
• EN 24375 - Aerospace fasteners - General performance requirements.
• EN ISO 898-1 - Mechanical properties of fasteners made of carbon steel and alloy steel.
• SAE Aerospace Standards (AS) - Various standards covering materials, coatings, and mechanical testing of aerospace fasteners.

Adherence to SIST EN 3112:2001 and related standards supports safety, performance, and interoperability in aerospace manufacturing and maintenance sectors. The use of these standardized hexagonal bolts ensures enhanced durability, safety, and operational integrity in critical aerospace systems.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts, normal hexagonal head, threaded to head, in alloy steel, cadmium plated - Classification: 900 MPa (at ambient temperature) / 235 °CLuft- und Raumfahrt - Sechskantschrauben, Gewinde annähernd bis Kopf, aus legiertem Stahl, verkadmet - Klasse: 900 MPa (bei Raumtemperatur) / 235 °CSérie aérospatiale - Vis a tete hexagonale normale, filetées jusqu'a proximité de la tete, en acier allié, cadmiées - Classification:
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