What it is
AN177 close tolerance hex head bolt (AN173 THRU AN186), Hex head, close tolerance, .4375-20 UNF-3A, shank (A dia) .4367-.4362", grip .812" (±.016), length 1.469" (+.031 -.016 as printed) (AN173 THRU AN186 Rev. 7 sheet 3, Table II)
Equivalents
  • AN177H13ANCatalog onlySame NSN 5306-00-298-2812 (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