Marson M47425 Poly-Nut Expander Inserts, #8-32 Steel Rivet Nut Inserts, Low Profile, Zinc Plated, 50-Pack

Marson M47425 Poly-Nut Expander Inserts, #8-32 Steel Rivet Nut Inserts, Low Profile, Zinc Plated, 50-Pack

• The Marson M47425 Poly-Nut Expander Inserts are designed to provide strong, permanent threads in thin materials where traditional tapped threads are not practical. These #8-32 steel inserts install from one side and are ideal for use in sheet metal, fiberglass, rigid plastics, and other thin materials. Their low-profile design delivers a clean, nearly flush appearance while providing vibration-resistant captive threads for long-lasting fastening performance.
• Features:
  • Creates Permanent Threads in Thin Materials – Ideal for sheet metal, fiberglass, and rigid plastic applications that are too thin for standard tapped threads.
  • One-Sided Installation – Easily installs from one side of the workpiece for convenient assembly and repairs.
  • Low Profile Head Design – Provides a clean, nearly flush installed appearance.
  • Vibration Resistant – Designed to resist loosening and spinning after installation.
  • Steel Construction with Zinc Finish – Durable steel body with zinc clear trivalent chromate coating for corrosion resistance.
  • Cost-Effective Fastening Solution – Lightweight installation tooling reduces labor and assembly costs.
• Description:
  • Poly-Nut / Rivet Nut Insert
  • Style: “O” Style Round Body
  • Thread Size: #8-32 UNC-2B
  • Head Style: Low Profile
  • Material: Steel
  • Finish: Zinc Clear Trivalent Chromate
  • Grip Range: 0.020 Inch to 0.080 Inch
  • Installation Type: Blind Installation
• Specifications:
  • Manufacturer: Marson
  • Part Number: M47425
  • Thread Size: 8-32
  • Body Length (L): 0.410 Inch
  • Head Diameter (W): 0.287 Inch
  • Body Diameter (Lip): 0.249 Inch
  • Grip Range (Min): 0.020 Inch
  • Grip Range (Max): 0.080 Inch
  • Hole Size (Min): 0.250 Inch
  • Hole Size (Max): 0.254 Inch
  • Recommended Drill Size: 1/4 Inch
  • Quantity: 50 Pieces
• Applications:
  • Automotive body panels
  • Fiberglass assemblies
  • Rigid plastic fastening
  • Sheet metal fabrication
  • Industrial equipment assembly
  • Blind fastening installations
• The Marson M47425 Poly-Nut Inserts are also commonly referred to as rivet nuts, blind threaded inserts, expander inserts, threaded insert nuts, steel rivnuts, or captive thread inserts.

Q: What materials can these inserts be used in?
A: These inserts are designed for thin materials including sheet metal, fiberglass, and rigid plastics.

Q: What size fastener do these inserts accept?
A: The inserts feature #8-32 UNC internal threads.

Q: What hole size is required for installation?
A: The recommended installation hole size is 1/4 inch (0.250” to 0.254”).

Q: How many inserts are included?
A: Each package contains 50 steel Poly-Nut expander inserts.