BOB-M3-1 Hex Self-Clinching Nut, Carbon Steel

Product Overview

The BOB-M3-1 is a carbon steel hex self-clinching nut with an M3 x 0.5 internal thread. It creates a permanent captive female thread in sheet metal through press installation. The hexagonal body and clinching section engage the panel while the internal thread remains accessible for repeated assembly.

Key Features

• Exact product number: BOB-M3-1

• Carbon steel hexagonal body

• M3 x 0.5 internal thread

• Specification code 1

• Press installation in prepared sheet metal

• 1.0 mm minimum sheet thickness

• 4.25 mm installation hole

Exact Specifications

The following dimensions are taken from the M3 code 1 row of the LAMBOOR hex self-clinching nut catalog. All dimensions are in millimeters.

• Thread size and pitch: M3 x 0.5

• Product series: BOB

• Thread code: M3

• Specification code: 1

• Dimension A minimum: 1.0

• Minimum sheet thickness: 1.0

• Installation hole: 4.25 with +0.08 tolerance

• Dimension C maximum: 4.22

• Dimension E: 5.5 +/- 0.25

• Dimension T: 2.0 +/- 0.25

• Minimum hole-center-to-edge distance: 4.8

Part Number Breakdown

Use the complete product number BOB-M3-1 when requesting a quotation or placing an order. BOB identifies the carbon steel hex self-clinching nut series, M3 identifies the M3 x 0.5 thread code, and 1 identifies the specification configuration for a minimum sheet thickness of 1.0 mm.

Installation and Panel Requirements

Prepare a 4.25 mm mounting hole with the catalog tolerance and maintain at least 4.8 mm from the hole center to the panel edge. Position the clinching section squarely in the hole and use appropriate press tooling to seat the nut evenly. Confirm the 1.0 mm minimum sheet thickness, panel material compatibility and installed thread condition before production release.

Material and Selection

BOB-M3-1 uses carbon steel construction. The catalog also identifies a stainless steel BOBS family for applications requiring a different material. Select the exact series according to the required material and corrosion performance, and state any coating, inspection or compliance requirements when ordering.

Selection and Ordering

Select BOB-M3-1 when the assembly requires an M3 x 0.5 captive female thread and the panel meets the catalog hole, thickness and edge-distance limits. For quotation and order confirmation, provide the complete product number BOB-M3-1, required quantity, panel material and thickness, finish requirement, inspection requirements and applicable drawing or standard.

Frequently Asked Questions

What does BOB-M3-1 identify?

BOB-M3-1 identifies the carbon steel hex self-clinching nut series, an M3 x 0.5 internal thread and specification code 1 for a 1.0 mm minimum sheet thickness.

What mounting hole and panel thickness are required?

Use a 4.25 mm mounting hole with the catalog +0.08 tolerance. The minimum sheet thickness is 1.0 mm, and the minimum hole-center-to-edge distance is 4.8 mm.

How is BOB-M3-1 installed?

Place the clinching section squarely in the prepared hole and apply controlled parallel press force with suitable tooling until the nut is evenly seated. Verify seating, panel condition and thread integrity after installation.

How does BOB-M3-1 differ from the BOBS family?

BOB identifies the carbon steel family, while BOBS identifies the stainless steel family. Choose the series that matches the required material and corrosion performance, then confirm the full product number and dimensions before ordering.