What it is
NAS1291 nut, thread .1640-32UNJC-3B (ESNA LF3858-82, catalog p.23 / PDF p.25)
Equivalents
  • MS21043-08MSCatalog onlySame NSN 5310-00-878-7196 (government catalog). Not a maker's approval: confirm on the drawing.
  • MS21043L08MSCatalog onlySame NSN 5310-00-878-7196 (government catalog). Not a maker's approval: confirm on the drawing.

+18 more reference numbers in the detail below.

Install tooling, by who made the part
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Reference only: the drawing and its process spec govern. How to read this

Every size and maker in the NAS1291C series →

Full detail: decode, cited documents, every stock number
NAS1291C08: MS21043-08, MS21043L08 | SpecLok