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  • FF-S-85 Military Spec Fasteners

    • FF-S-85 Military Specifications Fasteners

    Mil spec FF-S-85 for fasteners covers types and styles of slotted and hexagon head cap screws.

    Type I – Slotted Head

    • Style 1s – Round head
    • Style 2s – Flat countersunk head, 82°
    • Style 4s – Fillister head

    Type II – Plain head

    • Style 10p – Hexagon head