TCM 2 1042-(R) – Paolo Astori SPA – Gattico (IT) PQ393

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Conditions for approval required by:  Julien Gauther

3 Replies to “TCM 2 1042-(R) – Paolo Astori SPA – Gattico (IT) PQ393”

  1. EN2883-050:
    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT after tapping, crimping, heat treatment operations?
    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 3074.
    Thus, by applying Table 13, column A, 13 nuts shall be tested instead of 5.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).

    EN2894-060:
    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT after tapping, crimping, heat treatment operations?
    EN2894 calls out EN2942 for raw material.
    In FAI, material cert is compliant to AMS5662 and AMS5663.
    Could you please clarify?
    In FAI, passivation is declared to have been carried out as per EN2516 whereas in PFC, AMS2700 is mentioned.
    Could you please explain this?

    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 490.
    Thus, by applying Table 13, column A, 8 nuts shall be tested instead of 3.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).

    EN3435-050:
    This nut is dry film lubricated as per EN2491. Before lubrication, EN2491 requires a passivation as per EN2516. In both FAI and PFC, passivation was carried out as per AMS2700.
    How is it considered equivalent?
    Locking torque test – single-cycle:
    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 12217.
    Thus, by applying Table 13, column A, 20 nuts shall be tested instead of 5.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).
    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT operation? PFC does not show any NDT.

    EN3536-100

    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 2995.
    Thus, by applying Table 13, column A, 13 nuts shall be tested instead of 5.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).

    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT after tapping, crimping, heat treatment operations?

    Many thanks in advance,
    Best regards.

    Reply

  2. EN2883-050:
    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT after tapping, crimping, heat treatment operations?
    –> NDT is not required for acceptance and it has not been perfomed after crimping and HT but only after forming step to check the absence of defects due to the raw material. Considering our high experience (more than 75 years of nuts manufacturing), the risk analysis and acceptance tests required we think that there is no any potential risk to produce non conforming parts for this type of nut.

    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 3074.
    Thus, by applying Table 13, column A, 13 nuts shall be tested instead of 5.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).
    -> You are correct. Sampling has been correctly applied but then sampling has been wrongly reported on TR. See FAI and TR documents attached revised.

    EN2894-060:
    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT after tapping, crimping, heat treatment operations?
    –> NDT is not required for acceptance and it has not been perfomed after crimping and HT but only after forming step to check the absence of defects due to the raw material. Considering our high experience (more than 75 years of nuts manufacturing), the risk analysis and acceptance tests required we think that there is no any potential risk to produce non conforming parts for this type of nut.

    EN2894 calls out EN2942 for raw material. (EN2952)
    In FAI, material cert is compliant to AMS5662 and AMS5663.
    Could you please clarify?
    –> Raw material is perAMS5662 but it is capable of EN2952 chem only as reported on TR. Both are Inco718 material. P/N has been qualified with AMS5662 raw material (EN2952 chem only).
    In FAI, passivation is declared to have been carried out as per EN2516 whereas in PFC, AMS2700 is mentioned.
    Could you please explain this?
    -> Typo error. PFC reviewed. See attached.

    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 490.
    Thus, by applying Table 13, column A, 8 nuts shall be tested instead of 3.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).
    -> You are correct. Sampling has been correctly applied but then sampling has been wrongly reported on TR. See FAI and TR documents attached revised.revised.

    EN3435-050:
    This nut is dry film lubricated as per EN2491. Before lubrication, EN2491 requires a passivation as per EN2516. In both FAI and PFC, passivation was carried out as per AMS2700.
    How is it considered equivalent? Passivation process is the same. We can certify EN2516. See attached FAI and PFC reviewed.
    Locking torque test – single-cycle:
    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 12217.
    Thus, by applying Table 13, column A, 20 nuts shall be tested instead of 5.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).
    -> You are correct. Sampling has been correctly applied but then sampling has been wrongly reported on TR.See FAI and TR documents attached revised.

    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT operation? PFC does not show any NDT. -> No NDT operation for this nut.

    EN3536-100
    As per ISO5858, clause 5.6.7.2.2, sampling for Acceptance is defined in table 13, column A “non-destructive test”.
    Mfg batch quantity is: 2995.
    Thus, by applying Table 13, column A, 13 nuts shall be tested instead of 5.
    I agree, locking torque test may be considered as destructive one because we cannot use the nuts after. However, ISO5858 is quite clear on this matter and this test does not really “destroy” the nut (on the contrary, tensile test is a destructive one, as we can see in ISO5858, clause 5.6.1 for Acceptance).
    -> You are correct. Sampling has been correctly applied but then sampling has been wrongly reported on TR.See FAI and TR documents attached revised.

    Even if ISO5858 does not require any NDT for Acceptance, is there any NDT after tapping, crimping, heat treatment operations?
    –> NDT is not required for acceptance and it has not been perfomed after crimping and HT but only after forming step to check the absence of defects due to the raw material. Considering our high experience (more than 75 years of nuts manufacturing), the risk analysis and acceptance tests required we think that there is no any potential risk to produce non conforming parts for this type of nut.

    Reply

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