prEN 3327

SLOVENSKI STANDARD
01-september-2025
Aeronavtika - Sorniki, dvojna šestroba glava, ozka toleranca, srednja navojna
dolžina, iz toplotnoodporne zlitine na nikljevi osnovi NI-P100HT (Inconel 718), brez
prevleke - Klasifikacija: 1 275 MPa/650 °C
Aerospace series - Bolts, double hexagon head, close tolerance, medium thread length,
in heat resisting nickel base alloy NI-P100HT (Inconel 718), uncoated - Classification: 1
275 MPa/650 °C
Luft- und Raumfahrt - Zwölfkant-Passschrauben, mittlere Gewindelänge, aus
hochwarmfester Nickelbasislegierung NI-P100HT (Inconel 718), blank - Klasse: 1 275
MPa/650 °C
Série aérospatiale - Vis de précision à tête bihexagonale, à filetage moyen, en alliage
résistant à chaud à base de nickel NI-P100HT (Inconel 718), non revêtu - Classification :
1 275 MPa/650 °C
Ta slovenski standard je istoveten z: prEN 3327
ICS:
49.030.20 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2025
ICS 49.030.20 Will supersede EN 3327:2008
English Version
Aerospace series - Bolts, double hexagon 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 Luft- und Raumfahrt - Zwölfkant-Passschrauben,
bihexagonale, à filetage moyen, en alliage résistant à mittlere Gewindelänge, aus hochwarmfester
chaud à base de nickel NI-P100HT (Inconel 718), non Nickelbasislegierung NI-P100HT (Inconel 718), blank -
revêtu - Classification : 1 275 MPa/650 °C Klasse: 1 275 MPa/650 °C
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3327:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
4.1 Configuration, dimensions, tolerances, masses . 4
4.2 Material . 10
4.3 Surface treatment . 10
5 Designation . 10
6 Marking . 10
7 Technical specification . 10

European foreword
This document (prEN 3327:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 3327:2008.
— 4.2 “Material”: material standard SAE AMS5662 added;
— 4.4 “Thread surface” removed.
1 Scope
This document specifies the dimensions of uncoated double hexagon 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 used in aerospace fastening systems mainly stressed in shearing force.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 2424, Aerospace series — Marking of aerospace products
EN 2583, 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
ISO 3353-1, Aerospace — Lead and runout threads — Part 1: Rolled external threads
ISO 4095, Aerospace — Bihexagonal drives — Wrenching configuration — Metric series
ISO 5855-1, Aerospace — MJ threads — Part 1: General requirements
ISO 5855-2, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts
TR 3775, Bolts and pins — Materials
SAE AMS5662, Nickel Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, Rings, and Stock for Forgings
and Rings 52.5Ni — 19Cr — 3.0Mo — 5.1Cb (Nb) — 0.90Ti — 0.50Al — 18Fe Consumable Electrode or
Vacuum Induction Melted 1 775 °F (968 °C) Solution Heat Treated, Precipitation-Hardenable
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
4 Required characteristics
4.1 Configuration, dimensions, tolerances, masses
Configuration shall be
...