Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1 275 MPa/650 °C

This standard specifies the dimensions of uncoated T-head bolts, close tolerance, with MJ-thread, medium thread length, in heat-resisting nickel base alloy NI-P100HT for aerospace applications.
Maximum test temperature of the parts is 650 °C.
These bolts are to be used in aerospace fastening systems mainly stressed in shearing force.

Luft- und Raumfahrt - T-Kopf-Passschrauben, mittlere Gewindelänge, aus hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 718), blank - Klasse: 1 275 MPa/650 °C

Série aérospatiale - Vis de précision à tête anti-rotation T, à filetage moyen en alliage résistant à chaud à base de nickel NI-P100HT (Inconel 718), non revêtu - Classification : 1 275 MPa/650 °C

Aeronavtika - Sorniki, glava T, ozka toleranca, srednja navojna dolžina, iz toplotnoodporne zlitine na nikljevi osnovi NI-P100HT (Inconel 718), brez prevleke - Klasifikacija: 1 275 MPa/650 °C

General Information

Status
Published
Publication Date
05-May-2008
ICS
49.030.20 - Bolts, screws, studs
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
14-Apr-2008
Due Date
19-Jun-2008
Completion Date
06-May-2008
Ref Project
EN 3293:2008 - Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1 275 MPa/650 °C

Relations

Revised
oSIST prEN 3293:2025 - Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1 275 MPa/650 °C
Effective Date
12-Feb-2025

Overview

EN 3293:2008 is a CEN aerospace standard that specifies the dimensions and designation for uncoated T‑head bolts (close tolerance, medium thread length) manufactured from the heat‑resisting nickel‑base alloy NI‑P100HT (Inconel 718). The standard covers bolts with MJ threads, intended for aerospace fastening systems mainly stressed in shearing force. Parts are classified 1 275 MPa / 650 °C with a maximum test temperature of 650 °C.

Key topics

  • Scope and configuration
    • Defines the T‑head bolt configuration (see Figure 1) and tolerancing for close‑tolerance bolts.
    • Dimensions, tolerances and masses are specified in Tables 1 and 2.
  • Material
    • Material requirement: NI‑P100HT in accordance with EN 2952.
  • Threads
    • MJ‑thread geometry and run‑out requirements referenced to ISO 5855‑1/2 and ISO 3353‑1 for lead/runout and rolled threads.
  • Surface and coating
    • Bolts are uncoated; surface treatment: none.
  • Temperature and mechanical classification
    • Parts qualified for testing up to 650 °C and classified 1 275 MPa / 650 °C.
  • Marking and designation
    • Designation format and marking requirements (EN 2424, Style A) are prescribed; example designation: “Bolt EN 3293 - 080 - 050”.
  • Conformance
    • Technical specification references EN 2583 for related bolt requirements.

Applications and users

  • Practical applications: selection and specification of high‑temperature, shear‑loaded aerospace fasteners where interchangeability and traceability are required.
  • Typical users:
    • Aerospace design and structural engineers specifying fastening systems
    • Fastener manufacturers and forgings suppliers producing NI‑P100HT (Inconel 718) bolts
    • Procurement and quality assurance teams verifying part conformity and marking
    • Maintenance and repair organizations requiring correct replacement parts

Related standards

  • EN 2952 - Heat resisting alloy NI‑PH2601 (bar for forged fasteners)
  • EN 2583 - Bolts, MJ threads, in NI‑PH2601 - Technical specification
  • EN 2424 - Marking of aerospace products
  • ISO 5855‑1 / ISO 5855‑2 - MJ thread general requirements and limit dimensions
  • ISO 3353‑1 - Lead and runout threads (rolled external threads)

EN 3293:2008 helps ensure consistent dimensions, material traceability and high‑temperature performance for T‑head bolts in critical aerospace fastening applications. Keywords: EN 3293:2008, T‑head bolts, NI‑P100HT, Inconel 718, MJ‑thread, aerospace fasteners, 650 °C, close tolerance.

Frequently Asked Questions

SIST EN 3293:2008 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1 275 MPa/650 °C". This standard covers: This standard specifies the dimensions of uncoated T-head bolts, close tolerance, with MJ-thread, medium thread length, in heat-resisting nickel base alloy NI-P100HT for aerospace applications. Maximum test temperature of the parts is 650 °C. These bolts are to be used in aerospace fastening systems mainly stressed in shearing force.

This standard specifies the dimensions of uncoated T-head bolts, close tolerance, with MJ-thread, medium thread length, in heat-resisting nickel base alloy NI-P100HT for aerospace applications. Maximum test temperature of the parts is 650 °C. These bolts are to be used in aerospace fastening systems mainly stressed in shearing force.

SIST EN 3293:2008 is classified under the following ICS (International Classification for Standards) categories: 49.030.20 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 3293:2008 has the following relationships with other standards: It is inter standard links to oSIST prEN 3293:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 3293:2008 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1 275 MPa/650 °CAeronavtika - Sorniki, glava T, ozka toleranca, srednja navojna dolžina, iz toplotnoodporne zlitine na nikljevi osnovi NI-P100HT (Inconel 718), brez prevleke - Klasifikacija: 1 275 MPa/650 °CSérie aérospatiale - Vis de précision à tête anti-rotation T, à filetage moyen en alliage résistant à chaud à base de nickel NI-P100HT (Inconel 718), non revêtu - Classification : 1 275 MPa/650 °CLuft- und Raumfahrt - T-Kopf-Passschrauben, mittlere Gewindelänge, aus hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 718), blank - Klasse: 1 275 MPa/650 °C49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:SIST EN 3293:2008enTa slovenski standard je istoveten z:EN 3293:200801-julij-2008SIST EN 3293:2008SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3293
April 2008 ICS 49.030.20 English Version
Aerospace series - Bolts, T-head, close tolerance, medium thread length, in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1 275 MPa/650 °C
Série aérospatiale - Vis de précision à tête anti-rotation T, à filetage moyen en alliage résistant à chaud à base de nickel NI-P100HT (Inconel 718), non revêtu - Classification : 1 275 MPa/650 °C
Luft- und Raumfahrt - T-Kopf-Passschrauben, mittlere Gewindelänge, aus hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 718), blank - Klasse: 1 275 MPa/650 °C This European Standard was approved by CEN on 3 November 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3293:2008: E

Figures Figure 1 — Configuration.5
Tables Table 1 — Dimensions.5 Table 2 — Lengths and masses.6
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