Item # RNNM04C2SY
M4 FLANGE KNURLED BODY RIVETNUT, 2.00-3.30mm GRIP, STEEL, YELLOW ZINC PLATED
Item # RNNM04C2SY
M4 FLANGE KNURLED BODY RIVETNUT, 2.00-3.30mm GRIP, STEEL, YELLOW ZINC PLATED
- UM: EA
- Brand: RIVETKING
The RNNM04C2SY is a M4 steel, yellow zinc plated flange-style knurled body rivet nut from the RivetKing IKF (low profile head) thinwall series. Designed for blind installation in sheet metal and panel applications where threads are needed but back-side access is impractical, this rivet nut installs from one side of the workpiece and provides a permanent threaded socket once set.
Typical applications: Common in light-gauge sheet metal, electronics enclosures, HVAC ductwork, signage, and consumer-product assembly where smaller diameter fasteners are appropriate. The steel, yellow zinc plated material is well-suited to general industrial, automotive, equipment manufacturing, structural, sheet metal fabrication.
Understanding Grip Range
Specifications
| Property | Value |
|---|---|
| Thread Size | M4 |
| Material / Finish | Steel, Yellow Zinc Plated |
| Series | IKF (RivetKing thinwall, low-profile head, knurled body) |
| Grip Range | 2.00-3.30mm |
| Recommended Drill / Hole Size | 6.75mm |
| Head Diameter | 9.91mm |
| Body Diameter | 6.73mm |
| Length (open end) | 11.94mm |
| RivetKing Part # | .40C2IKFSY |
Related Parts in This Family
Match your panel thickness to a grip range below, or switch material for your environment. The highlighted row is the part you're viewing now.
| Part # | Grip | Material | Use When |
|---|---|---|---|
| RNNM04C1SY | 0.50-2.00mm | Steel YZ | Shorter grip (same material) |
| RNNM04C2SY ← current | 2.00-3.30mm | Steel YZ | Panel 2.00-3.30mm |
| RNNM04C2AP | 2.00-3.30mm | Aluminum | Lighter / mild corrosion |
| RNNM04C2SS | 2.00-3.30mm | 18-8 SS | Marine / food / outdoor |
Installation: Drill a 6.75mm hole in the workpiece. Insert the RNNM04C2SY from the accessible side and set with a rivet nut tool — the body collapses against the back side of the panel and the knurled flange grips the front side to prevent rotation under torque. Recommended grip range is 2.00-3.30mm (sheet thickness).
For step-by-step instructions: see our How to Install Rivet Nuts guide for the complete process, common mistakes, and verification tips.
Tool selection: Use a hand-operated lazy-tongs spin-spin or spin-pull rivet nut tool for low-volume installs, or a pneumatic rivet nut gun for production. Battery-powered cordless rivet nut tools are well-suited to this thread size. Both spin-spin and spin-pull tool types are compatible with the IKF series.
Drill bit needed: 6.75 mm (Letter H). We stock the matching Triumph bit — TRI14708 — ships same day with your rivet nuts. Full drill bit chart.
Technical Notes
| Property | Value |
|---|---|
| Recommended Bolt Torque | 21 in-lbs (per RivetKing Rev. B test data) |
| Static Pull-Out Strength | 3.8 kN in 0.062″ steel sheet |
| Push-Out Strength | 180 lbf in 0.125″ steel sheet |
| Spin-Out Resistance (anti-rotation) | 4.5 in-lbs in steel |
| Hole Tolerance | +0.006″ / -0.000″ (per RivetKing 2025 catalog) |
| Material Certification | Steel, Yellow Zinc Plated — RoHS Compliant |
| Installation Tool Compatibility | Compatible with spin-pull or spin-spin rivet nut installation tools. Knurled body collapses against panel back-side during setting. |
| Installation Reference | See our step-by-step installation guide for the complete process and verification methods. |
Performance values per RivetKing Rev. B test data (May 2023), tested in zinc-plated steel installed in flat sheet stock under laboratory conditions. Actual performance in your application varies with panel material, hole tolerance, installation, and environmental factors. Reference only — not for use as design loads without independent validation. See full performance reference and disclaimer.
Manufacturer Cross-References
| Manufacturer | Part Number |
|---|---|
| RivetKing | .40C2IKFSY |
| AVK | ALS4-470-3.3 |
| Atlas | AELS8-470-3.3 |
| Sherex | CAL2-470-3.3 |
| Industrial Rivet & Fastener | .40C2IKFSY |
| Brighton-Best (BBI) | (BBI crossover available — call for cross-reference) |
Searching for a different brand? Eugene Fastener can cross-reference RivetKing IKF parts to AVK, Sherex, POP/Avdel, Goebel, and other major rivet nut manufacturers. Call us with any part number for a same-day match.
Rivet Nut vs. Other Threaded Inserts
| Type | Best For | Limitations |
|---|---|---|
| Rivet Nut (this part) | Permanent threads in sheet metal, blind installation, one-side access | One-shot install; needs proper drill size and deburr |
| Plus Nut / Jack Nut | Soft or brittle panels (plastic, fiberglass, drywall) | Lower torque ratings than rivet nuts; not for steel panels |
| Well Nut | Vibration damping, waterproofing in thin panels | Rubber body limits load capacity and temperature range |
| PEM (self-clinching) | High-volume sheet metal production at the press | Requires press tooling; not a blind/field install |
See the full comparison guide for detailed pros, cons, load tables, and decision criteria.
Helpful resources: Selection Guide · Drill Bit & Hole Size Chart · Tool Selection Guide · How to Install · Rivnut vs. Plus / Jack / Well / PEM Comparison.
In stock at Eugene Fastener & Supply. Shipping nationwide. Same-day shipping on orders placed before 2pm Pacific.
| Diameter | M4 |
| Thread Pitch | 0.70 |
| Material | Steel |
| Min Grip | 2.00 |
| Max Grip | 3.30 |
| Hole Diameter | 6.75 |
| Finish | Yellow Zinc |
| Thread Type | Coarse |