Military Standard
Manufacturer part number MS28773-05 · NSN 5330-00-487-4687 · Back-up rings
MS28773-05 is listed in the PartsPerk catalog for sourcing requests. Seller SKU SGP136655-X50. Manufacturer: Military Standard. Military Standard MS28773-05 Teflon (PTFE) Retainer, Packing - 50/Pack. This page does not claim stock, price, or approved interchange.
Stock, price, and certification gaps can be filed through the Aviation Evidence Network — this link opens identity review; it does not invent availability or certificates.
Verbatim ingest text — kept for provenance, not rewritten. The structured specifications below break the same facts into individually labeled fields.
Approvals and Conformities NSN 5330-00-487-4687 Product Attributes Country of Origin United States Shipping Weight 0.05 pounds ECCN 9A991.d Manufacturer P/N MS28773-05 Schedule B Code 3926.90.4500 Pack Quantity 50 Series MS28773 Thickness 5/16" Mater
Structured fields from the owned catalog observation. Source assertions are not live certificates, stock, or prices.
Identifiers
Category
Aircraft & engine parts › Hardware › Back-up rings
Observed package
SGP136655-X50 · 50/Pack (unapproved) · sale increment 1 ea · selected PP-45f0d22cd1c550ecab40214500b6ba04-V1
Enrichment obligation
Published facts on this page are the available identification and package observations. Source-linked explanations, pack comparisons, and corrections remain open — this is not a mass rewrite.
Technical documents
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Published rows filed under the same observed category. Shared category is a filing grouping only — it is not an interchange, supersession, or fit claim.