MRN Series Flathead Rivet-Nuts

Available in Steel-Zinc Plated or Aluminum Class 2B Threads

MRN Series Rivet-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, MRN Nuts are perfect for use in metal, fiberglass and rigid plastic previously too thin for tapped threads. They provide a neat 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, MRN Series Rivet-Nuts provide permanent, captive threads that do not allow loosening under vibration and will not rotate when attached to the mating material.

MRN Series Rivet-Nuts with large diameter heads can be used in soft materials which inherently offer little, if any, thread strength. 

The flathead design provides the most bearing surface for higher torque applications. The larger flange extends above the material in which it is installed and provides a built-in spacer.

MRN Series Flathead Rivet-Nut Specifications (in inches)

A B C D
Steel Aluminum Body Head Head Body
Thread Bulk Bulk Length Dia Ref Height Dia. Max Grip Range Hole Size Drill
Size Part# Part # +-.015"  -0.015 (nom) -0.004  Min Max Min Max Size
6-32 57110 57210 .438 .325 .032 .189 .010 .075 .189 .193 # 12
8-32 57120 57220 .438 .357 .032 .221 .010 .075 .221 .226 # 2
8-32 57121 57221 .500 .357 .032 .221 .075 .120 .221 .226 # 2
10-24 57130 57230 .531 .406 .038 .250 .010 .080 .250 .254 1⁄4"
10-24 57132 57232 .594 .406 .038 .250 .080 .130 .250 .254 1⁄4"
10-32 57140 57240 .531 .406 .038 .250 .010 .080 .250 .254 1⁄4"
10-32 57142 57242 .594 .406 .038 .250 .080 .130 .250 .254 1⁄4"
1/4-20 57150 57250 .625 .475 .058 .332 .020 .080 .332 .338 Q
1/4-20 57152 57252 .687 .475 .058 .332 .080 .140 .332 .338 Q
1/4-20 57154 57254 .750 .475 .058 .332 .140 .200 .332 .338 Q
5/16-18 57171 57271 .750 .665 .062 .413 .030 .125 .413 .423 Z
5/16-18 57174 57274 .875 .665 .062 .413 .125 .200 .413 .423 Z
3/8-16 57181 57281 .844 .781 .088 .490 .030 .115 .490 .500 1⁄2"
3/8-16 57184 57284 .938 .781 .088 .490 .115 .200 .490 .500 1⁄2"

4 Easy Steps for Installation

As shown above, Klik-Nuts can be used to fasten mulitple sheets as well as single sheets.