Hilti S-MD 12-14x2 1/2 HWH #3 SS316 Installation Guide

Installation guide for Hilti S-MD 12-14x2 1/2 HWH #3 SS316 self-drilling screws. Includes tool compatibility, drilling instructions, and technical specifications.

Table of contents

Quick Guide

This document provides essential installation and compatibility information for the Hilti S-MD 12-14x2 1/2 HWH #3 SS316 self-drilling screw. Ensure you are using the correct power tool and technique to avoid damaging the fastener or the substrate.

Technical Specifications

Product: S-MD 12-14x2 1/2 HWH #3 SS316
Material: A4 Stainless Steel (Rostfrei/Inox)
Head Size: 5/16 inch
Drilling Capacity (DC): 0.10 - 0.24 inches
Max Fastening Thickness (MFmax): 1.77 inches
Diameter: #12 (0.216 inches)

Installation Steps

Installation and compatibility guide for Hilti S-MD screws.

Tool Selection: Use only compatible Hilti tools: ST 1800, ST 1800-A, or ST 2000-22, equipped with the S-NSD 8 attachment. Do not use SF (H) with S-NSD 8, SID, or SIW tools.
Positioning: Ensure the drill is held perpendicular (90 degrees) to the surface.
Drilling: Apply steady pressure. Do not overtighten, as this can strip the thread or damage the fastener.
Finishing: Ensure the washer is seated flush against the surface. Do not leave the screw loose (undertightened).

Compatibility and Usage

The A4 stainless steel construction is designed for high corrosion resistance, suitable for environments within 0-1km of the coast and industrial or urban settings. Always verify that the material thickness falls within the specified drilling capacity (0.10 - 0.24 inches) before installation.

Manufacturer information

Hilti Corporation

Brand profile

Manufacturer website https://www.hilti.com Support https://www.hilti.com/content/hilti/global/en/support.html Manufacturer manuals https://www.hilti.com/content/hilti/global/en/technical-literature.html

Practical help

Common problems

Screw head stripped or over-driven

Ensure correct tool settings and do not exceed torque limits during installation.

Screw not seating properly

Ensure the drill is held perfectly perpendicular to the surface.

Before use

Verify the tool is compatible (ST 1800, ST 1800-A, ST 2000-22 with S-NSD 8).
Check that the material thickness is within the drilling capacity (0.10 - 0.24 inches).
Ensure the environment is suitable for A4 stainless steel usage.
Confirm the S-NSD 8 attachment is correctly installed on the tool.

Specs in practice

DC (Drilling Capacity): 0.10 - 0.24 inches; the thickness of the material the screw can drill through.
A4 Stainless Steel: High corrosion resistance, suitable for harsh or coastal environments.

Images and diagrams

Step 1: Shows compatible tools (ST series) and incompatible tools (SF, SID, SIW).
Step 2-3: Shows correct perpendicular drilling technique.
Step 4-6: Shows correct seating of the washer and avoiding over/under-tightening.

Model compatibility

Compatible with ST 1800, ST 1800-A, ST 2000-22 tools only when used with S-NSD 8.
Not compatible with SID or SIW impact drivers.

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Manual page author

David Miller

Documentation analyst

Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.