AN4H66: AN4-66 | SpecLok

AN4H66

What it is: AN4 hex head bolt, machine, aircraft (AN3 THRU AN20), Hex head, 1/4 -28 UNF-3A, shank (A dia) .249-.246", grip 6-5/16" (±1/64), length 6-25/32" (+1/32 -1/64) (AN3 THRU AN20 Rev. 12 sheet 2)
Equivalents: AN4-66ANCatalog onlySame NSN 5306-01-282-2350 (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 →

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

Full detail: decode, cited documents, every stock number

Head: Hex head
Diameter: 1/4 -28 UNF-3A, shank (A dia) .249-.246"
Grip / length: grip 6-5/16" (±1/64), length 6-25/32" (+1/32 -1/64) (AN3 THRU AN20 Rev. 12 sheet 2)
Material: Non-corrosion resistant steel (no material letter)

Install tooling, by who made the partNot documented for this part number.

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Identical or approved-alternate part numbers, each with the document that states it.

No sourced equivalent on file for AN4H66. SpecLok only lists an equivalent when a manufacturer or government document states it.