GripLock™ M4–M6 Petal Rivet Nut Set
GripLock™ M4–M6 Petal Rivet Nut Set
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GripLock™ M4–M6 Petal Rivet Nut Set
No Room for a Nut Behind the Panel? Lock the Thread Into the Panel Instead.
Insert it through a prepared hole, expand the petal-style body behind the material, and create a threaded fastening point for compatible M4, M5 or M6 repair jobs.
A Bolt Is Easy. Holding the Nut Behind It Isn’t Always.
Thin panels often do not have enough material for a useful threaded connection, while reaching behind the workpiece to hold a loose nut may be awkward—or simply impractical.
Insert It Small. Expand It Wide.
The body passes through the prepared opening before expanding into a petal-like shape behind the material.
That expansion gives the fastener a broader area to clamp against than the original hole alone, while leaving a threaded connection available from the accessible side.
Turn One Prepared Hole Into a Threaded Mounting Point.
Match the fastener to the job and prepare the hole carefully. Correct fit is what allows the expansion body to seat and clamp as intended.
The Petal Shape Is What Turns a Small Hole Into a Wider Clamp.
As the body deforms, its sides spread outward behind the material instead of remaining a narrow straight sleeve.
The practical benefit is a larger contact area behind the panel—useful in compatible thin-material fastening jobs where a loose conventional nut is inconvenient.
The body opens behind the panel to create the clamping shape.
The front flange seats against the accessible face of the workpiece.
The installed anchor provides a compatible internal thread for fastening.
Useful when creating or restoring a fastening point in compatible panels.
A Better Repair Is One You Can Fasten Again Later.
Once properly installed, the anchor stays with the panel and leaves a defined threaded connection at the work surface.
That can make future fastening, component replacement or maintenance more straightforward than relying on a loose nut every time the joint is opened.
Keep Them Ready for the Jobs That Never Come With a Convenient Backside Nut.
The listing positions the set for repair, reinforcement and assembly work across automotive, workshop, furniture and general DIY applications.
Always match the anchor, hole and installation method to the actual material and load involved.
Carbon Steel Core. Zinc-Plated Surface.
The current product specification lists carbon steel construction with a zinc-plated finish.
The plating helps provide surface protection against ordinary moisture, oxidation and everyday environmental exposure—but the listing does not publish a formal corrosion-test rating, so this page does not describe the fasteners as rustproof or permanently weatherproof.
Three Thread Sizes Cover More Than One Kind of Repair.
The assortment gives you M4, M5 and M6 options instead of forcing every project into one fastener size.
The product dimension image identifies the M4 version as 4×20.
The product dimension image identifies the M5 version as 5×25.
The product dimension image identifies the M6 version as 6×25.
Start With 30—or Stock Up With 90.
Both listed assortments include M4, M5 and M6, so the decision is mainly about how many repairs you want to stay ready for.
10 × M4
10 × M5
10 × M6
30 × M4
30 × M5
30 × M6
Small Hardware. A Much Easier Way to Solve Certain Panel Repairs.
The expandable body spreads behind the workpiece to form the characteristic petal-style clamping shape.
Once correctly installed, the anchor provides an internal thread for a compatible fastener.
Useful for jobs where placing and holding a conventional nut behind the panel is inconvenient.
The assortment gives you multiple sizes for different compatible repair and assembly jobs.
The zinc-plated finish helps protect the carbon steel surface from ordinary moisture and oxidation exposure.
Pick the smaller assortment for occasional jobs or keep more of each size available in the larger pack.
GripLock™ at a Glance.
| Product Type | Petal-Style Expansion Rivet / Locking Nut Set |
|---|---|
| Material | Carbon Steel |
| Surface Finish | Zinc Plated |
| Thread Sizes | M4 • M5 • M6 |
| Listed Size Markings | M4: 4×20 • M5: 5×25 • M6: 6×25 |
| 30PCS Pack | 10 × M4 • 10 × M5 • 10 × M6 |
| 90PCS Pack | 30 × M4 • 30 × M5 • 30 × M6 |
| Expansion Style | Petal-Shaped Rear Expansion |
| Applications | Fixing • Reinforcement • Assembly • Repair |
| Suggested Uses | Automotive Panels • Workshop Repairs • Furniture • Equipment • Compatible DIY Panels |
A Few Things Worth Checking Before the Repair.
What does the petal-style body actually do?
What thread sizes are included?
What is included in the 30-piece set?
What is included in the 90-piece set?
What materials can I use them with?
Are they rustproof?
Can I use any hole size?
How much weight can one anchor hold?
Do I need a special installation tool?
Stop Fighting the Back of the Panel.
Keep M4, M5 and M6 expansion anchors ready for the repairs where a thin panel needs a threaded connection and an ordinary loose nut makes the job harder than it needs to be.
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