# screwdetectclassification-xrrbi-hkwlh-lybq > 2025-03-13 6:48am
https://universe.roboflow.com/rf-100-vl/screwdetectclassification-xrrbi-hkwlh-lybq

Provided by a Roboflow user
License: MIT

# Overview
- [Introduction](#introduction)
- [Object Classes](#object-classes)
  - [Hex Washer Screw](#hex-washer-screw)
  - [Hexagonal Bolt](#hexagonal-bolt)
  - [Philips Screw](#philips-screw)
  - [Pozidriv Screw](#pozidriv-screw)
  - [Torx Screw](#torx-screw)

# Introduction
This dataset is used for object detection of various types of screws and bolts. The goal is to accurately annotate each instance of the following classes: Hex Washer Screw, Hexagonal Bolt, Philips Screw, Pozidriv Screw, and Torx Screw. Each class represents a distinct type of fastener with unique characteristics.

# Object Classes

## Hex Washer Screw
### Description
A Hex Washer Screw is identifiable by its hexagonal head and integrated washer underneath. It is primarily used in exterior applications.

### Instructions
- Annotate the entire head of the screw, ensuring the hexagonal shape and washer are included.
- Do not label if only the shaft is visible without the head.

## Hexagonal Bolt
### Description
The Hexagonal Bolt features a prominent six-sided head. Unlike screws, bolts do not have a washer face.

### Instructions
- Annotate the entire head making sure to capture the distinctly thick, flat hexagonal sides.
- Avoid annotation of bolts if they appear worn to the extent of losing their shape.

## Philips Screw
### Description
A Philips Screw has a cross-shaped recess in the head, allowing for better grip of screwdrivers.

### Instructions
- Focus on the recessed cross pattern when annotating.
- Do not annotate if the cross is obscured or not visible.

## Pozidriv Screw
### Description
The Pozidriv Screw is similar to the Philips Screw but features additional notches that increase driving stability.

### Instructions
- Ensure both the cross and the notches are clearly visible and included in the annotation.
- Avoid labeling if the notches cannot be distinguished.

## Torx Screw
### Description
Torx Screws possess a star-shaped head with six rounded lobes, designed to prevent slippage.

### Instructions
- Annotate capturing the star pattern clearly.
- Do not annotate if the lobes are indistinct or worn down beyond recognition.