PEMPEM Fastener Catalogue
CL™ Self-Clinching Nuts

Installation – SH™ Nuts

PDF page 35 · PEM Fastener Catalogue

  1. Prepare properly sized mounting hole in sheet. Do not perform any secondary operations such as deburring.
  2. Place fastener into the anvil hole and place the mounting hole (preferably the punch side) over the shank of the fastener as shown in diagram to the right.
  3. With installation punch and anvil surfaces parallel, apply squeezing force until the head of the nut comes into contact with the sheet material.

PEMSERTER® Installation Tooling

Unified

Thread CodeAnvil Dimensions (in.)Anvil Part NumberPunch Part Number
A ±.002P ±.005
0420.454.150975200038975200048
0518.517.200975200039975200048
0616.280.2508020084(1)9752000901400

Metric

Thread CodeAnvil Dimensions (mm)Anvil Part NumberPunch Part Number
A ±0.05P ±0.13
M611.533.81975200038975200048
M813.135.08975200039975200048
M107.626.358005682(1)975200901400

(1) Large nut anvils use protrusion to locate part instead of counterbore.

Technical diagram of a protrusion anvil and punch assembly for thread sizes 3/8 and M10. Key Components and Specifications: Punch: Top cylindrical component applying pressure. Anvil: Bottom supporting component with a central protruding pillar. P (Protrusion Height: Vertical distance from the anvil base to the top of the protrusion. A (Protrusion Diameter: Width of the anvil's central pillar. Chamfer Specification: $45^{\circ} \times .050" / 1.27\text{ mm Max.}$ on the top inner edge of the anvil protrusion. Radius Specification: $R .015" / 0.381\text{ mm Max.}$ at the outer shoulder of the anvil.

Installation drawing callouts:

  • Counterbore anvil – Thread Sizes 1/4-20 to 5/16 and M5 to M8. Punch; Anvil; A; P.
  • Protrusion anvil – Thread Sizes 3/8 and M10. Punch; Anvil; A; P; 45˚ x .050"/ 1.27 mm Max.; R .015" / 0.381 mm Max.

Installation Notes

  • For best results we recommend using a Haeger® or PEMSERTER® press for installation of PEM® self-clinching fasteners. Please check our website for more information.
  • Visit the Animation Library on our website to view the installation process for select products.

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