BS-M3-1 Self-Clinching Blind Nut, Stainless Steel

Product Overview

The BS-M3-1 is a stainless steel self-clinching blind nut with an M3 x 0.5 internal thread and a closed end. It creates a permanent captive female thread in sheet metal through press installation while keeping the reverse end of the threaded cavity closed.

Key Features

• Exact product number: BS-M3-1

• Stainless steel construction

• M3 x 0.5 internal thread

• Closed-end blind threaded body

• Length code 1

• 1.0 mm minimum sheet thickness

• 4.25 mm installation hole

Exact Specifications

The following dimensions are taken from the BS-series M3 length code 1 row of the LAMBOOR standard fastener catalog. All dimensions are in millimeters.

• Thread size and pitch: M3 x 0.5

• Product series: BS

• Thread code: M3

• Length code: 1

• Minimum sheet thickness: 1.0

• Dimension A: 0.97

• Installation hole: 4.25

• Dimension B maximum: 3.84

• Dimension C maximum: 4.22

• Dimension E: 6.35 +/- 0.25

• Dimension H: 5.3

• Dimension L maximum: 8.5

• Dimension T: 9.6 +/- 0.25

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

Part Number Breakdown

Use the complete product number BS-M3-1 when requesting a quotation or placing an order. BS identifies the stainless steel blind self-clinching nut series, M3 identifies the M3 x 0.5 thread code, and 1 is the catalog length code for this configuration.

Installation and Panel Requirements

Prepare a 4.25 mm mounting hole and maintain at least 4.8 mm from the hole center to the panel edge. Position the clinching end squarely in the prepared hole and apply controlled parallel press force with suitable tooling until the shoulder is evenly seated. Confirm that the panel meets the 1.0 mm minimum thickness requirement, then inspect seating, panel condition and thread integrity.

Material and Closed-End Construction

The BS series uses stainless steel construction. The closed end forms a blind threaded cavity and prevents the mating screw from passing through the back of the fastener. The catalog does not assign an IP rating, so any sealing requirement must be defined and validated at assembly level.

Selection and Ordering

Select BS-M3-1 when the assembly requires an M3 x 0.5 captive blind thread in sheet metal and the panel meets the catalog hole, thickness and edge-distance limits. For quotation and order confirmation, provide the complete product number, quantity, panel material and thickness, mating-screw engagement, any required stainless steel grade, and inspection or compliance requirements.

Frequently Asked Questions

What does BS-M3-1 identify?

BS-M3-1 identifies the stainless steel blind self-clinching nut series, an M3 x 0.5 internal thread and catalog length code 1. Use the complete product number when ordering because each code segment selects a specific catalog configuration.

What panel preparation is required for BS-M3-1?

Prepare a 4.25 mm mounting hole in sheet metal at least 1.0 mm thick. Maintain a minimum hole-center-to-edge distance of 4.8 mm, then verify the panel material and installation setup before production.

How should BS-M3-1 be installed?

Place the clinching end squarely in the mounting hole and apply controlled parallel press force with suitable tooling until the shoulder is fully and evenly seated. Inspect the panel for distortion and confirm that the M3 thread remains undamaged after installation.

Does the closed end provide a certified waterproof rating?

No fixed IP rating is stated in the catalog. The closed-end body keeps the threaded cavity blind, but assembly sealing depends on the panel, installation and test conditions. State any required sealing standard and validation method when ordering.

How does BS-M3-1 differ from the B series?

BS identifies the stainless steel version, while B identifies the zinc-plated carbon steel version in the same catalog family. Select the series according to the required material and corrosion conditions, then confirm the complete product number and row dimensions.