SCREW, CLOSE TOLERANCE

The screw specified under NSN 5305-01-212-4553 is a close tolerance fastener requiring strict compliance with technical and quality standards, including the use of limited rights data that only qualified vendors with access or traceability to approved sources may supply. Manufacturing must adhere to specified inspection protocols, including dimensional verification of Class 3A and 3B threads per System 22 of FED-STD-H28/20, with exceptions for small internal and external threads. Sampling is governed by MIL-STD-1916 or ASQ H1331 with zero-defect acceptance criteria unless otherwise stated, and unspecified attributes are treated as major. Casting or forging may be necessary, and contractors not possessing required tooling must request assistance through DLA’s casting and forging program. Packaging must meet DLA standards, and government identification must be removed from non-accepted items. The item is subject to export controls under ITAR or EAR, restricting disclosure to foreign persons, and access to technical data is limited to contractors with JCP certification, completed DLA export control training, and formal approval. Mercury or mercury compounds are prohibited unless specifically exempted for functional components like batteries or sensors, and any such components must include secondary containment per NAVSEA standards. Item Unique Identification is not required, and delivery is due within 169 days after order with a solicitation response deadline of July 20, 2026.