Marson M47425 #8-32 Steel Poly-Nut (Expander) Inserts, 50 Pieces

Marson M47425 #8-32 Steel Poly-Nut (Expander) Inserts, 50 Pieces

• Marson MPN Series M47425 "O" Style Round Body Rivetnut Insert; #8-32 UNC-2B, (0.020 - 0.080 Inch Grip), Low Profile Head, Steel, Zinc Clear Trivalent Chromate, 50/Pack
• Poly-Nuts can be used in a wide range of applications and are designed to provide a very efficient and cost-effective method of placing permanent threads in thin materials. Installed from one side, Poly-Nuts are perfect for use in metal, fiberglass and rigid plastic previously too thin for tapped threads. Poly-Nuts provide a nearly flush appearance and, once in place, the internal threads are ready for a screw or bolt. Lightweight tooling ensures easy installation by the operator and reduces costs when compared with other methods. After installation, Poly-Nuts provide permanent, captive threads that do not allow loosening under vibration and will not rotate when attached to the mating material.
• Features
  • Recoil taps differ from standard taps dimensionally and only Recoil Screw Thread Insert (STI) Taps are suitable for use with Recoil Wire Thread Inserts
  • Recoil taps are manufactured to precise standards from High Speed Steel (HSS) with ground threads and have a larger diameter but the same pitch as a standard tap in order to accommodate the wire insert
  • Recoil hand taps are available with taper, intermediate, and bottoming leads
  • Taper (or Roughing Taps) are used for starting precision and difficult holes. This tap has a lead of eight threads, but no size reduction
  • Intermediate (or Plug/Second), used in most general purpose applications to facilitate thread cutting true to the drilled hole. The tap has a lead of four threads, but no size reduction
  • Bottoming Taps are used to ensure the minimum thread runout when tapping to the bottom of blind holes. The tap has a lead of two threads and would normally be preceded by a taper or an intermediate tap
• Description
  • Screw Thread Insert Tap
  • Type: Screw Thread Insert
  • Style: Taper
  • Wrenching: Machine
  • Material: High Speed Steel
  • Application: Sparkplug
• Specifications
  • Screw Thread Insert Tap
  • Type: Screw Thread Insert
  • Style: Taper
  • Wrenching: Machine
  • Material: High Speed Steel
  • Application: Spark plug
  • Thread Size: 8-32
  • Thread Size: 8-32
  • Part #: M47425
  • Body Length (L): .410
  • Head Dia. (w): .287
  • Body Dia. (lip) (w): .249  
  • Grip Range (min): .02
  • Grip Range (max): .08
  • Hole Size (min): .25
  • Hole Size (max): .254
  • Drill Size: 1/4"