EN 2236-1992 pdf download.Aerospace series – Pins , headed , close tolerance shank in alloy steel – Technical specification.
This EN 2236 completes the characteristics fixed in the product standard or definition document. It specifies the requirements concerning the approval of manufacturers, and acceptance conditions for pins, headed, close tolerance shank, in alloy steel.
2 Normative references
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection.
ISO 3534, Statistics — Vocabulary and symbols. ISO 5857, Aerospace — Alloy steel protruding head bolts with strength classification 1 250 MPa and M.J threads — Procureni ent specification.
EN 2000, Aerospace series — Quality assurance — EN aerospaee products — Approval of the quality system of manufacturers.
3 Definitions
3.1
inspection lot
see ISO 5857
3.2
discontinuity
ISo 5857
3.3
crack
see ISO 557
3.4
seam
see ISO 5857
3.5
lap
see ISO 5857
3.6
simple random sampling
Iso 3534
3.7
sampling plan
see ISO 3534
3.8
limiting quality (LQ)
see ISO :3534
3.9
acceptable quality level (AQL) see ISO 3534
3.10
acceptance number (Ac)
see ISO 3534
4 Approval of manufacturers See EN 2000.
5 Acceptance conditions of pins
See Tab’e 1.
The manufacturer shall carry out the inspections and tests on each inspection lot.
Unless otherwise stated, the pins shall be selected from the batch to he tested by simple random sampling.
Each pin may be submitted to several tests. The pins to be subjected to destructive tests may be those on which nondestructive tests have been performed.
6 Rejection and re-tests
Inspection lots not in conformity with the acceptance requirements, shall be submitted for re-inspection only after all defective units are removed and/or defects corrected.
Twice the initial number of specimens shall he used for re-inspecting or re-testing the attributes causing initial rejection. The same acceptance number (Ac) shall be used.
7 Test report
A certificate of conformity shall be furnished to the user when requested in the order.EN 2236-1992 pdf download.

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