What it is
MS20004 internal wrenching bolt, 160 ksi Ftu (MS20004 THRU MS20024), Internal wrenching (hex socket) head, 1/4-28 UNJF-3A, shank (A dia) .2492-.2477", grip .625" (±.010), length 1.125" (±.015) (MS20004E THRU 20024E page 3, Table II)
Equivalents
  • MS20004H10MSCatalog onlySame NSN 5306-00-639-1774 (government catalog). Not a maker's approval: confirm on the drawing.
Install tooling, by who made the part
Not documented for this part number. Ask a tooling specialist →

Reference only: the drawing and its process spec govern. How to read this

Full detail: decode, cited documents, every stock number