Federal Specification

FF-S-92 — Screw, Machine, Slotted / Cross-Recessed / Hex

FF-S-92 covers slotted, cross-recessed, and hexagon head machine screws — general-purpose fasteners typically paired with a nut or driven into a tapped hole for lighter-duty assembly work. The current Revision D was published 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

Overview

FF-S-92 covers machine screws — general-purpose externally threaded fasteners intended for use with a mating nut or in a tapped hole, in slotted, cross-recessed (Phillips-type), or hexagon head configurations. Machine screws are typically smaller and lighter-duty than the cap screws covered by FF-S-85 and FF-S-86, and are widely used across electronics, panel, and general assembly work rather than heavy structural joints.

The current Revision D was published June 8, 2020, continuing the specification's long-running coverage of these general-purpose fastener types. Materials commonly include carbon steel (with black oxide or cadmium/zinc plating) and corrosion resistant steel for wet or corrosive environments.

Head/Drive Style Reference

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

FF-S-92 — 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, 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 FF-S-92 cover?

Slotted, cross-recessed (Phillips-type), and hexagon head configurations.

Need FF-S-92 Machine Screws?

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

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