FF-S-92 Military Specifications Fasteners

Mil spec FF-S-92C covers slotted, cross-recessed and hexagon head machine screws.

Type I - Slotted

• Style 1s – Round head
• Style 2s – Flat head, 82˚
• Style 3s – Flat head, 100˚
• Style 4s – Fillister head
• Style 5s – Fillister head, drilled
• Style 6s – Oval bead, 82˚
• Style 7s – Truss head
• Style 8s – Binding head
• Style 9s – Pan head
• Style 10s – Hexagon head

Type II – Hexagon, plain

• Style 10p – Hexagon

Type III - Cross-Recessed, Recess Designs I and II

• Style 1c - Round head.
• Style 2c - Flat head, 82˚
• Style 3c - Flat head, 100˚
• Style 4c - Fillister head
• Style 6c - Oval head, 82˚
• Style 7c - Truss head
• Style 8c - Binding head
• Style 9c - Pan head