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Steel Poly Nuts - Metric Sizes

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Marson Steel Poly-Nuts (MPN Series) 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. Marson Poly-Nuts provide a nearly flush appearance and once in place, the internal threads are ready for a screw or bolt.

Lightweight tooling assures 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.

Installation is made easy with available tools and kits. 

Marson Poly-Nut Specifications 

Thread Size

Steel

Body Length

Head Dia.

Body Dia.

Grip Range

Hole Size*

Drill Size

Stock #

A

B

D

Min.

Max.

Min.

Max.

4 x 0.7 mm

MPN4MM

0.410

0.287

0.249

0.020

0.080

0.250

0.254

1/4"

5 x 0.8 mm

MPN5MM

0.465

0.320

0.280

0.020

0.130

0.281

0.285

9/32"

6 x 1.0 mm

MPN6MM

0.610

0.415

0.374

0.030

0.165

0.375

0.379

3/8"

8 x 1.25 mm

MPN8MM

0.720

0.540

0.499

0.030

0.165

0.500

0.504

1/2"

10 x 1.5 mm

MPN10MM

0.720

0.540

0.499

0.030

0.165

0.500

0.504

1/2"

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