B-M5-10-2 Blind Self-Clinching Nut for Sheet Metal

Product Overview

The B-M5-10-2 is a zinc-plated carbon steel blind self-clinching nut with an M5 x 0.8 internal thread and a closed end. It provides a permanent captive thread in sheet metal while preventing the mating screw from passing through the bottom of the fastener. The sealed body is suitable where the reverse side of the threaded joint must remain closed.

Key Features

• Exact product number: B-M5-10-2

• B-series carbon steel construction with zinc plating

• M5 x 0.8 internal thread

• Closed-end blind threaded body

• Self-clinching press installation in sheet metal

• Code 2 configuration for 1.4 mm minimum sheet thickness

Exact Specifications

The following dimensions are taken from the B-series M5 code 2 row of the LAMBOOR standard fastener catalog. All dimensions are in millimeters.

• Thread size and pitch: M5 x 0.8

• Product code: B

• Thread code: M5

• Configuration code: 2

• Minimum sheet thickness: 1.4

• A: 1.38

• Installation hole: 6.4

• B maximum: 6.02

• C maximum: 6.38

• E: 8.75 +/- 0.25

• H: 7.1

• L maximum: 9.8

• T: 11.2 +/- 0.25

• Minimum edge distance: 7.1

Part Number and Catalog Mapping

Use the complete product number B-M5-10-2 when requesting a quotation or placing an order. B identifies the carbon steel version, M5 identifies the thread code, and 2 selects the catalog configuration for a 1.4 mm minimum sheet thickness. The corresponding catalog row specifies an L dimension of 9.8 mm maximum. Confirm the actual dimensions and assembly fit against the drawing or specification applicable to the complete B-M5-10-2 part number.

Installation and Panel Requirements

Prepare a 6.4 mm mounting hole and maintain at least 7.1 mm from the hole center to the panel edge. Insert the clinching end into the prepared hole and apply a controlled parallel pressing force so the serrated clinching feature seats uniformly. Keep the hole and contact surfaces clean, and verify that the fastener is fully seated without panel distortion. After installation, check the M5 thread and confirm that the selected screw length does not bottom out inside the blind threaded cavity.

Material and Closed-End Construction

The B code identifies the zinc-plated carbon steel version. Its closed end creates a blind threaded cavity and prevents screw penetration through the back of the fastener. The catalog describes this family as a waterproof standoff, but the part should not be assigned an IP rating or sealing performance beyond the documented closed-end construction without application-specific testing.

Selection and Ordering

Select B-M5-10-2 when the assembly requires an M5 x 0.8 captive thread, a closed back side and a panel thickness of at least 1.4 mm. Confirm the installation hole, edge distance, available body clearance and mating-screw engagement before release. For quotation and order confirmation, provide the complete product number, required quantity, panel material and thickness, mating-screw length, inspection requirements and any required compliance documentation.