ASME B18.18-2017 pdf download
ASME B18.18-2017 pdf download.Quality Assurance for Fasteners.
2.5.3 Reinspection. All sorted and/or reworked parts shall he resubmitted for lot sampling and inspection for the characteristic(s) found to be nonconforming and all other characteristics that would be affected by the repair or reprocessing operation(s) at a sample size that is two times the size of the original. If no parts in the sample inspected are found to be nonconforming, the material may reenter the production flow or may be approved for delivery or use as applicable.
2.6 Records
The supplier shall maintain records of inspections and tests as required by this plan. The records shall include the nature and number of observations made, number and type of deficiencies found, quantities of conforming and nonconforming parts, and any corrective action taken including any dispositions made in accordance with para. 2.5. Records shall he maintained for a minimum of 5 yr from the date of inspection, unless otherwise agreed upon by the purchaser and the supplier. Copies of the records shall be provided to the purchaser when requested.
2.7 Applicable Characteristics
Attributes to be evaluated during final inspection are outlined in the appropriate category sections of this Standard (see Table 1 or 2 as applicable). Product standards that specify inspection attributes shall take precedence over those specified in this document. Product standards that dictate inspection attributes shall dictate all inspection attributes.
A purchaser may specify inspection attributes in purchase documents. Purchasers that dictate inspection attributes shall dictate all inspection attributes.
2.8 Alteration Services and Partially Fabricated Parts
Alteration services and partially fabricated parts (e.g., washers, nuts, blanks, heat treating, and plating) may be purchased by the fastener supplier from subcontractors for use in the production of fasteners, provided the following requirements are met:
(a) The fastener supplier shall be responsible to the purchaser for the quality of the final product.
(b) The fastener supplier shall be responsible for the implementation of all requirements of this plan, including records.
(c) All lots that are processed by a subcontractor shall undergo inspection to determine if the parts conform to the requirements of the process and/or processes performed by the subcontractor.
4.3 Raw Material
4.3.1 Unless otherwise specified in the individual product standard, raw materials (rod, wire, or bar) shall be reviewed to determine that each coil or bundle has a mill identification and that each heat (batch, melt, cast, etc.) is accompanied by a mill certification of analysis or the equivalent. The raw material or its accompanying mill certification shall be inspected prior to release for fabrication to verify that it conforms to the specified material requirements.
4.4 Final Inspection and Test
Final inspection shall be completed by a person that has been properly trained and appointed by the producer. Minimum sample sizes shall be determined using Table 2. The attributes in Table I shall be inspected, unless otherwise specified by the purchaser or otherwise indicated in the product standard.
5 CATEGORY 3 — FASTENERS INTENDED FOR SPECIALIZED APPLICATIONS
5.1 Basic Category Structure
A Category 3 plan utilizes documented and verifiable in-process controls structured at the producer’s discretion. Parts and documentation shall be in compliance with requirements stated in this Standard and all supplemental requirements agreed upon between producer and purchaser. The producer shall have an independently registered quality management system. Final inspection shall be performed by a facility accredited to the requirements of ISO/IEC 17025.
5.2 Designation
When required. Category 3 shall be designated on purchase documents by specifying “Quality Assurance Provisions per Category 3 of ASME B18.18 are required” or other equivalent statement. Absence of such statement will default seller to Category 2.
5.3 Quality Management System
Producers of Category 3 fasteners shall have an independently accredited quality management system that complies with the requirements of an internationally accepted standard such as ISO 9001 or ISO/TS 16949.
5.4 Raw Material
5.4.1 Raw materials (rod, wire, or bar) shall be reviewed to determine that each coil or bundle has a mill identification and that each heat (batch, melt, cast, etc.) is accompanied by a mill certification of analysis or the equivalent.
