EngLab | Engineering Resources

Technical Datasheets, Reference Tables & Useful Resources for Engineers

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- Beam Reference Tables
- Design Resources
- Formula Sheets
- Notation & Symbols
- Software Commands & Functions
- Standard Hole Sizes for Fasteners & Screws

Beam Reference Tables

Explore comprehensive engineering reference tables for structural beams and shapes. Access detailed dimensions, sectional properties, and material specifications for W beams, C channels, L angles, and hollow structural sections (HSS) to support structural design, mechanical engineering, and construction projects.

American Wide Flange Steel Beams (W Beams) - Dimensions and Properties (Imperial)

Detailed reference for W beam dimensions, flange widths, depths, and moment of inertia in imperial units. Ideal for structural engineers and designers performing load analysis and beam selection.

American Steel Channels (C-Shapes) – Dimensions and Properties (Imperial)

Comprehensive chart of C channel sizes, web thicknesses, and section modulus in imperial units, supporting structural calculations and mechanical design tasks.

American Steel Angles (L-Shapes) – Dimensions and Properties (Imperial)

Reference table for L angle dimensions, leg lengths, and cross-sectional properties in imperial units, useful for frame construction, support structures, and mechanical engineering projects.

Hollow Structural Sections (HSS) - Dimensions and Properties (Imperial)

Complete reference for HSS tube dimensions, wall thicknesses, and sectional properties in imperial units, essential for designing columns, beams, and other structural elements.

Design Resources

Explore essential engineering design references for mechanical, manufacturing, and drafting projects. Access charts, tables, and guides covering gear conversions, surface finishes, weld symbols, tolerances, and fastener specifications to support precise and efficient technical work.

Bolt Dimensions & Sizes (Imperial)

Reference chart of imperial bolt sizes, diameters, and thread pitches to support mechanical assembly, fastener selection, and engineering design projects.

Bolt Dimensions & Sizes (Metric)

Reference chart of metric bolt sizes, diameters, and thread pitches to support mechanical assembly, fastener selection, and engineering design projects.

Drill Size Chart

Comprehensive reference for drill sizes including metric, fractional, letter, and number drills. Supports precise hole drilling, mechanical design, machining, woodworking, and manufacturing applications.

Fractional Inches to Decimal Equivalent Chart

Quick conversion guide from fractional inches to decimal values, helping engineers, machinists, and designers streamline measurements and calculations.

Gear Circular, Diametric and Module Pitch Conversion Table

Quickly convert between circular pitch, diametral pitch, and module for gears. This reference aids mechanical engineers and designers in accurate gear selection and design calculations.

Surface Roughness of Machining Processes

Detailed surface roughness chart with Ra, Rz, and Rq values for machining, finishing, and quality control. Helps engineers ensure proper surface specifications for components.

Standard Keyway Dimensions (ISO)

Reference for ISO keyway dimensions to ensure accurate shaft and hub design, fitting tolerances, and compliance with international standards.

Shaft Tolerances & Fits (ISO 286)

Comprehensive guide to shaft tolerances and fits based on ISO 286. Supports precision engineering, mechanical assembly, and quality control of shafts and mating components.

Formula Sheets

Access comprehensive engineering formula sheets for structural, mechanical, and geometric calculations. These resources provide quick reference to essential formulas for beam analysis, area and volume calculations, and cross-sectional properties to support design and drafting tasks.

Cross-Section Formula Sheet

Comprehensive formulas for determining cross-sectional areas of common shapes like circles, rectangles, and polygons. Ideal for engineering design, structural analysis, and CAD modeling.

Second Moment of Area (Area Moment of Inertia) Formula Sheet

Reference sheet for calculating the second moment of area (I) for beams and cross-sections. Useful for structural analysis, bending stress calculations, and mechanical design projects.

Surface Area Formula Sheet

Quick reference for calculating surface areas of 2D and 3D shapes including cylinders, spheres, and prisms. Supports material estimation, design calculations, and engineering analysis.

Trigonometric Identities Formula Sheet

Quick reference for essential trigonometric identities and formulas including sine, cosine, tangent, Pythagorean, double-angle, and half-angle identities. Supports engineering calculations, physics problems, and mathematical analysis.

Volume Formula Sheet

Essential formulas for computing volumes of 3D objects such as cylinders, spheres, and prisms. Useful for mechanical engineering, construction, and manufacturing calculations.

Notation & Symbols

Discover a comprehensive collection of engineering notation, symbols, and mathematical references designed to support technical documentation, report writing and academic processes. Access resources covering engineering symbols, LaTeX math notation, and formula formatting for professional documentation.

Engineering Constants

Access a collection of fundamental engineering constants such as material properties, physical constants, and standard coefficients. Quickly reference and copy values used across mechanical, electrical, and civil engineering disciplines.

Engineering Symbols Reference

Browse an extensive list of common engineering symbols and notations used in structural, mechanical, and electrical engineering drawings. Easily find and copy Roman, Greek, and mathematical letters and symbols.

LaTeX Math Symbols & Notation

Explore how to type mathematical and engineering symbols and notation in LaTeX using standard syntax and commands, from fractions and derivatives to logic and set theory.

Software Commands & Functions

Explore curated software guides for engineers, including AutoCAD commands, Excel formulas, MATLAB functions, LaTeX formatting, Python for engineering, and Solidworks shortcuts. These quick look-up tables enable efficient design, analysis, and computational tasks for STEM projects.

AutoCAD Commands

Extensive reference of AutoCAD 2D and 3D drafting commands for engineering design, technical drawings, and model automation.

C ++ Functions & Syntax

A complete, categorized reference of C++ syntax, functions, and programming structures for efficient coding, debugging, and software development.

Excel Commands

Complete guide to Excel formulas and functions for engineering calculations, data analysis, and project automation in technical workflows.

LaTeX Commands

Reference guide to LaTeX formatting commands for creating professional technical reports, research papers, and scientific documentation.

Linux Commands

Comprehensive reference of Linux commands, utilities, and terminal operations for system administration, file management, process control, and networking.

MATLAB Functions

Extensive reference for MATLAB mathematical and engineering functions for modeling, simulations, data visualization, and signal processing.

OpenFOAM Functions

A complete categorized reference of OpenFOAM solvers, boundary conditions, and post-processing utilities for efficient CFD simulation and analysis.

Python Functions

Comprehensive reference of Python libraries and functions tailored for engineering simulations, numerical calculations, and automated analysis.

Solidworks Shortcuts

Key Solidworks shortcuts and workflow tips for 3D CAD modeling, assembly design, and engineering drafting efficiency.

Standard Hole Sizes for Fasteners & Screws

Access comprehensive reference charts for counterbore, countersink, and pilot hole diameters of fasteners and screws according to standards including DIN, ISO, ANSI, JIS, GB, and UNI. These charts are essential for mechanical assembly, precision design, and fastener selection in engineering projects.

Clearance Hole Size for Bolts and Screws (Imperial)

Comprehensive imperial clearance hole size chart for bolts and screws, including recommended close, normal, and loose fit diameters. Ideal for engineers and machinists ensuring proper fastener fit in mechanical design and manufacturing.

Clearance Hole Size for Bolts and Screws (Metric)

Detailed metric clearance hole size chart for bolts and screws, providing standard fit diameters to ensure accurate drilling, secure fastening, and reliable assembly in engineering and industrial applications.

Counterbore Hole Size for Cheese Head Fasteners (DIN)

Reference table for DIN cheese head fasteners showing pilot hole diameters, counterbore diameters, and counterbore depths for accurate assembly and mechanical design.

Counterbore Hole Size for Cheese Head Fasteners (GB)

Comprehensive GB standard cheese head screw counterbore chart for precise mechanical engineering and manufacturing applications.

Counterbore Hole Size for Cheese Head Fasteners (ISO)

ISO standard reference for cheese head screw pilot holes and counterbores to ensure correct fit and assembly in machinery and equipment.

Counterbore Hole Size for Cheese Head Fasteners (JIS)

JIS standard table of cheese head fastener hole sizes for engineering and industrial design projects.

Counterbore Hole Size for Low Socket Head (DIN 7984)

DIN 7984 standard reference for low socket head screws showing counterbore diameters, pilot holes, and depths for mechanical assemblies.

Counterbore Hole Size for Pan Head Screw (ANSI Inch)

Reference chart for ANSI inch pan head screws showing counterbore diameters, pilot hole sizes, and depths.

Counterbore Hole Size for Pan Head Screw (ANSI Metric)

ANSI metric reference for pan head screw counterbore dimensions for accurate mechanical assembly.

Counterbore Hole Size for Pan Head Screw (DIN 85)

DIN 85 standard chart for pan head screw pilot holes and counterbores used in industrial and mechanical engineering.

Counterbore Hole Size for Pan Head Screw (ISO 7045)

ISO 7045 standard reference for pan head screw counterbore dimensions to ensure precise fit in mechanical assemblies.

Counterbore Hole Size for Pan Head Screw (JIS)

JIS standard chart for pan head screw counterbores and pilot hole diameters in mechanical design projects.

Counterbore Hole Size for Pan Head Screw (UNI)

UNI standard reference for pan head screw counterbore dimensions suitable for European and international mechanical standards.

Counterbore Hole Size for Shoulder Screw (ANSI-Inch)

ANSI inch standard shoulder screw counterbore and pilot hole dimensions for precise mechanical assembly.

Counterbore Hole Size for Shoulder Screw (DIN)

DIN standard reference chart for shoulder screw counterbores and pilot hole diameters.

Counterbore Hole Size for Shoulder Screw (GB)

GB standard shoulder screw counterbore sizes for mechanical engineering and industrial applications.

Counterbore Hole Size for Shoulder Screw (ISO)

ISO metric reference for shoulder screw counterbore diameters and depths to ensure proper fit in assemblies.

Counterbore Hole Size for Shoulder Screw (JIS)

Reference table for JIS shoulder screws including pilot holes, counterbore diameters, and depths for accurate assembly.

Counterbore Hole Size for Socket Head Screws (ANSI Inch)

ANSI inch reference for socket head screws including pilot holes, counterbore diameters, and depths for precision design.

Counterbore Hole Size for Socket Head Screws (ANSI Metric)

ANSI metric reference chart for socket head screw counterbore dimensions for mechanical and industrial design projects.

Counterbore Hole Size for Socket Head Screws (DIN 912)

DIN 912 standard reference for socket head screw pilot holes and counterbores for engineering assemblies.

Counterbore Hole Size for Socket Head Screws (GB)

GB standard reference for socket head screws including counterbore and pilot hole dimensions for mechanical design.

Counterbore Hole Size for Socket Head Screws (ISO 4762)

ISO 4762 standard chart for socket head screw counterbore and pilot hole dimensions for industrial engineering applications.

Counterbore Hole Size for Socket Head Screws (JIS)

JIS standard reference for socket head screws showing counterbore diameters, pilot holes, and depths for accurate mechanical assembly.

Countersunk Hole Size for Machine Screws (ANSI Metric)

ANSI metric reference chart showing countersunk hole diameters and depths for socket and flat head screws used in precision engineering.

Countersunk Hole Size for Socket Flat Head Screws (ANSI Inch)

Reference for ANSI inch socket flat head screws including pilot holes, counterbore diameters, and depth specifications for assembly accuracy.

Countersunk Hole Size for Socket Flat Head Screws (ANSI Metric)

Chart of ANSI metric socket flat head screw counterbore dimensions for mechanical and manufacturing design.

Countersunk Hole Size for Socket Flat Head Screws (ISO)

ISO standard reference for socket flat head screw pilot and countersink dimensions for engineering applications.

Engineering Resources