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Rivet nuts

ITTSE / ITTSEC Semi-hexagonal flat-head rivet nuts

BEARFIX · Technical product

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Semi-hexagonal Nuts
IER / IERC Nuts
IERSE Nuts


Semi-hexagonal Nuts
IER / IERC Nuts
IERSE Nuts


Semi-hexagonal Nuts
IER / IERC Nuts
IERSE Nuts

ITTSE and ITTSEC rivet nuts are fasteners designed to provide a metric thread in sheet metal and profiles using a single-sided installation method. Their semi-hexagonal geometry sets them apart within the rivet nut range, while the flat head provides a bearing surface against the material.

The product family is available in various metric sizes and sheet thicknesses, allowing for the selection of the appropriate part based on material and assembly requirements.

ITTSE and ITTSEC rivet nuts

The ITTSE and ITTSEC models share a semi-hexagonal geometry with a flat head. The main difference is that the ITTSEC model is the closed-end (blind) version.

  • ITTSE: Semi-hexagonal flat-head rivet nut.
  • ITTSEC: Semi-hexagonal flat-head closed-end rivet nut.

The semi-hexagonal geometry distinguishes this family from the cylindrical flat-head versions and the grooved configurations found in the Bearfix range.

Features of ITTSE / ITTSEC nuts

  • Semi-hexagonal geometry.
  • Flat head.
  • ITTSEC version with closed end.
  • Metric thread.
  • Single-sided installation.
  • Available for various sheet thicknesses.
  • Manufactured in Cromo III zinc-plated steel and A2 stainless steel.

Materials and finishes

The catalog’s range of rivet nuts includes various materials. For this family, the following are specified:

  • Cromo III zinc-plated steel.
  • A2 stainless steel.

The catalog’s general technical data sheet identifies the steel as C1008 and the stainless steel as AISI 304.

Available measurements

ITTSE – Flat head semi-hexagonal

ThreadReferenceThickness T (mm)
M3BFACITTSEM03C / BFACITTSEM03L0.3–1.8 / 1.8–3.0
M4BFACITTSEM04C / BFACITTSEM04L0.5–2.0 / 2.5–4.0
M5BFACITTSEM05C / BFACITTSEM05L0.5–2.5 / 2.0–4.0
M6BFACITTSEM06C / BFACITTSEM06L0.5–3.0 / 3.5–6.0
M8BFACITTSEM08C / BFACITTSEM08L1.0–3.5 / 3.0–6.0