Federal Specification

FF-S-92 Machine Screws — Slotted, Cross-Recessed & Hex Head

The specification for FF-S-92 machine screws covers general-purpose fasteners typically paired with a mating nut or driven into a tapped hole for lighter-duty assembly work. This active standard governs the manufacturing of slotted machine screws, cross-recessed machine screws, and hexagon head machine screws. The current FF-S-92 revision D was published on June 8, 2020.

Type: Machine Screw Drives: Slotted, Cross-Recessed, Hex Current Rev: D, 8 Jun 2020 Status: Active

At a Glance

Full Title
Screw, Machine, Slotted, Cross-Recessed or Hexagon Head
Head Styles
Slotted, Cross-Recessed, Hexagon
Materials
Carbon Steel, CRES
Typical Diameter Range
#2 – 3/8"
Related Docs
FF-S-85, FF-S-86
FSC Class
5305
Status
Active
Current Revision
D, 8 Jun 2020

FF-S-92 Machine Screws Overview

FF-S-92 machine screws are highly versatile, externally threaded fasteners designed for comprehensive assembly operations. Unlike heavier structural bolts, these components are typically smaller (ranging from #2 to 3/8" diameters) and are widely utilized across electronics mounting, panel securing, and general industrial fabrication. They are intended for use alongside a mating nut or installed directly into a tapped hole.

Because they serve such a broad spectrum of industries, the standard outlines stringent manufacturing guidelines to ensure thread integrity and torque resistance. Materials commonly sourced include high-tensile carbon steel (often treated with black oxide, cadmium, or zinc plating for corrosion resistance) and Corrosion Resistant Steel (CRES) for chemically aggressive or marine environments.

You can find complete historical data and recent updates for this standard via the Defense Logistics Agency (DLA) QuickSearch portal.

Head and Drive Style Reference

The specification provides distinct operational advantages depending on the drive configuration selected for assembly.

Slotted: A single straight slot across the head, driven with a standard flat-blade screwdriver — the simplest and most traditional machine screw drive.

Frequently Asked Questions

What's the difference between FF-S-92 and FF-S-85?

FF-S-92 covers lighter-duty machine screws typically used with a mating nut or in electronics panels, while FF-S-85 covers cap screws intended to be driven directly into a tapped hole with a larger, more heavily loaded head bearing surface.

What head drive options does this standard cover?

The specification strictly dictates the manufacturing of slotted machine screws, cross-recessed (Phillips-type) machine screws, and hexagon head machine screws.

Need FF-S-92 Machine Screws?

Ananka Fasteners manufactures compliant FF-S-92 hardware with full material traceability and Mill Test Certification.

Prefer email? sales@anankafasteners.com

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