Aerospace series - Bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature) / 235 °C

This standard specifies the characteristics of bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated.
Classification: 1 100 MPa  ) / 235 °C  )

Luft- und Raumfahrt - Zwölfkantschrauben, langes Gewinde, aus legiertem Stahl, verkadmet - Klasse: 1 100 MPa (bei Raumtemperatur) / 235 °C

Diese Norm legt die Eigenschaften für Zwölfkantschrauben, langes Gewinde, aus legiertem Stahl, verkadmet,
fest.
Klasse: 1 100 MPa1)/235 °C2)

Série aérospatiale - Vis à tête bihexagonale normale, tige normale à tolérance large, filetage long, en acier allié, cadmiées - Classification: 1 100 MPa (à température ambiante) / 235 °C

Aeronavtika - Sorniki, normalna dvanajstroba glava, široka toleranca, dolg navoj, iz legiranega jekla, prevlečeni s kadmijem - Klasifikacija: 1100 MPa (pri temperaturi okolice)/235 °C

General Information

Status
Published
Publication Date
30-Jun-2009
Withdrawal Date
30-Jan-2010
ICS
49.030.30 - Nuts
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 3 - Mechanical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
21-Jan-2025
Completion Date
21-Jan-2026
Ref Project
SIST EN 4136:2009 - Aerospace series - Bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification: 1100 MPa (at ambient temperature)/235 °C

Relations

Refers
EN 9133:2018 - Aerospace series - Quality Management Systems - Qualification Procedure for Aerospace Standard Products
Effective Date
28-Jan-2026
Corrected By
EN 4136:2009/AC:2010 - Aerospace series - Bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature) / 235 °C
Effective Date
22-May-2010

Overview

EN 4136:2009 is a CEN (ASD-STAN) aerospace standard that specifies the characteristics for high‑strength bolts: normal bi‑hexagonal head, coarse tolerance normal shank, long thread, made from alloy steel and cadmium plated. The bolts are classified for a minimum tensile strength of 1 100 MPa (at ambient temperature) and a maximum service temperature of 235 °C (surface‑treatment dependent). Dimensions and form tolerances are given in accordance with established aerospace thread and fastener conventions.

Keywords: EN 4136:2009, aerospace bolts, bi‑hexagonal head bolts, cadmium plated, alloy steel, 1100 MPa, long thread, MJ thread

Key topics and technical requirements

  • Configuration and dimensions: Bolt geometry, mass and dimensional limits reference ISO 3203 and ISO 5855‑2; dimensions are expressed in millimetres and apply after surface treatment.
  • Material and strength: Alloy steel meeting classification for 1 100 MPa tensile strength (see EN 2137 / EN 2442 / TR 3775).
  • Surface treatment: Cadmium plating per EN 2133. Contacted surfaces require 8–14 µm cadmium where contact is defined by a 20 mm diameter ball; all other surfaces must have continuous cadmium plating (no thickness specified). Black colour option available (code B).
  • Threads and tolerances: MJ long‑thread form and lead/runout per ISO 3353‑1; tolerances of form and position per ISO 7913.
  • Marking and designation: Marking style B per EN 2424; designation example: EN4136H050040B (standard number + hole code + diameter code + length code + colour code).
  • Manufacturing and quality: Manufacturer approval and quality systems refer to EN 9100; bolt qualification to EN 9133; procurement guidance to ISO 7689.
  • Additional technical details: Edge breaks (0.1–0.4 mm), optional hole codes, and specific head/wrenching dimensions are included in tables and figures of the standard.

Applications

  • Structural and mechanical fastening in aerospace assemblies where high tensile strength and corrosion resistance are required.
  • Aircraft airframe, engine accessory components and other aerospace systems using standardized bi‑hexagonal head fasteners.
  • Procurement and specification for aerospace suppliers, OEMs and MRO organizations needing consistent, approved cadmium‑plated alloy steel bolts.

Who should use EN 4136:2009

  • Design and structural engineers specifying fasteners for aircraft and aerospace equipment
  • Fastener manufacturers, heat‑treaters and plating shops producing aerospace bolts
  • Procurement, quality managers and regulators ensuring conformity to aerospace standard parts
  • Maintenance, repair and overhaul (MRO) organizations sourcing replacement parts

Related standards

  • EN 2133 (Cadmium plating), EN 2137 / EN 2442 (alloy steel grades), EN 2424 (marking)
  • ISO 3203, ISO 3353‑1, ISO 5855‑2, ISO 7689, ISO 7913
  • EN 9100 (quality systems), EN 9133 (qualification for aerospace standard parts)

This concise reference helps engineers and procurement teams determine whether EN 4136:2009 bolts meet their strength, dimensional and corrosion‑resistance needs for aerospace applications.

Get Certified

Connect with accredited certification bodies for this standard

National Aerospace and Defense Contractors Accreditation Program (NADCAP)

Global cooperative program for special process quality in aerospace.

ANAB United States Verified
Visit Website

NSF-ISR

NSF International Strategic Registrations.

ANAB United States Verified
Visit Website

Orion Registrar Inc.

US-based certification body for management systems.

ANAB United States Verified
Visit Website

Sponsored listings

Frequently Asked Questions

EN 4136:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification: 1 100 MPa (at ambient temperature) / 235 °C". This standard covers: This standard specifies the characteristics of bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated. Classification: 1 100 MPa ) / 235 °C )

This standard specifies the characteristics of bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated. Classification: 1 100 MPa ) / 235 °C )

EN 4136:2009 is classified under the following ICS (International Classification for Standards) categories: 49.030.30 - Nuts. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 4136:2009 has the following relationships with other standards: It is inter standard links to EN 9133:2018, EN 4136:2009/AC:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 4136:2009 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.Luft- und Raumfahrt - Zwölfkantschrauben, langes Gewinde, aus legiertem Stahl, verkadmet - Klasse: 1100 MPa (bei Raumtemperatur)/235 °CSérie aérospatiale - Vis à tête bihexagonale normale, tige normale à tolérance large, filetage long, en acier allié, cadmiées - Classification: 1100 MPa (à température ambiante)/235 °CAerospace series - Bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification:
1100 MPa (at ambient temperature)/235 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 4136:2009SIST EN 4136:2009en,de01-oktober-2009SIST EN 4136:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4136
July 2009 ICS 49.030.30 English Version
Aerospace series - Bolts, normal bi-hexagonal head, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification:
1 100 MPa (at ambient temperature) / 235 °C
Série aérospatiale - Vis à tête bihexagonale normale, tige normale à tolérance large, filetage long, en acier allié, cadmiées - Classification: 1 100 MPa (à température ambiante) / 235 °C
Luft- und Raumfahrt - Zwölfkantschrauben, langes Gewinde, aus legiertem Stahl, verkadmet - Klasse: 1 100 MPa (bei Raumtemperatur) / 235 °C This European Standard was approved by CEN on 6 June 2009.
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:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4136:2009: ESIST EN 4136:2009
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...