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Amesweb – Advanced Mechanical Engineering Solutions
Trusted calculators, charts and reference data for design engineers, students and makers.
Beam Calculator
Metric Threads
ISO Fits & Tolerances
Material Properties
Unit Converter
Deflection and Stress Calculators
Cantilever beam stress and deflection (multi-loads & moments)
Cantilever beam with concentrated load at any point
Cantilever beam with bending moment
Cantilever beam with distributed load
Column buckling and compression member design
Formulas for column buckling calculations
Column buckling for a solid round bar
I-beam column buckling calculations
Fixed beam stress and deflection (multi-loads & moments)
Fixed beam with point load at any point
Fixed beam with a moment
Fixed beam with distributed load
Simply supported beam calculator
Simply supported beam with concentrated load
Simply supported beam with two concentrated loads
Simply supported beam with distributed load
Simply supported beam with two distributed loads
Simply supported beam with a moment
Simply supported beam with two moments
Simply supported beam deflection example
Bushing Dimensions
Type H headed press-fit bushings
Type HL head type liner bushings
Type L plain type liner bushing
Type-P plain press-fit bushings
Type-SF slip fixed type renewable bushings
Chains
Leaf chain dimensions chart
Leaf chain – minimum ultimate tensile strength
Roller chain dimensions table
Roller chain sprocket diameter calculator
Horsepower ratings ANSI roller chain No 25
Charts
Decimal equivalents of fractional wire and letter sizes
Contact Mechanics
Contact calculations of sphere in circular race
Example: contact stresses in a steel ball bearing
Formulas for Hertzian contact stress calculations
Hertzian contact stress calculations
Converters
Metric ↔ Inch unit conversion
dB converter
SI prefixes
The International System of Units
Cross Sectional Properties of Shapes and Profiles
Second moment of area calculator
Cross sectional area calculator
Section modulus calculator
I-beam sectional properties calculator
Steel wide flange I-beam sizes (ASTM)
American standard beam (S shape) sizes
Aluminum I-beam sizes (AA)
Tee section sectional properties
C channel sectional properties
Equilateral triangle area & inertia
Isosceles triangle area & properties
American standard steel channel sizes
Metric U profile sizes
Steel angle sizes
Equal-leg angle section properties
Aluminum channel sizes (AA)
Round hollow tube sectional properties
Round solid bar sectional properties
Rectangular hollow section properties
RHS dimensions & properties (EN 10210-2)
Equal angle section properties
Unequal angle section properties
Square HSS sizes & properties
Square hollow section properties
SHS dimensions & properties (EN 10210-2)
Rectangular steel tubing sizes & properties
Round HSS sizes
Rectangular solid bar sectional properties
British universal steel beams
Steel angle sizes (metric)
Metric unequal angle properties
Metric equal angle properties
Fasteners
Machine screw sizes
Machine screws – general data
Button head socket cap screw dimensions
Metric hex socket button head dimensions
Socket head cap screw dimensions
Hex socket dimensions
Spline socket dimensions
Metric socket head cap dimensions
Low head socket cap screw dimensions
Flat head socket cap screw dimensions
Metric socket set screw dimensions
Metric slotted set screw dimensions
Hex & heavy hex head bolt dimensions
Hex & heavy hex head cap screw dimensions
Flat head wood screw dimensions
Oval head wood screw dimensions
Pan head wood screw dimensions
Wood screw sizes
Bolt grades, strength and markings
Machine screw nut dimensions
Hex, jam & heavy hex nut dimensions
Hex flange nut sizes
Hex coupling nut sizes
Hex slotted nut sizes
Metric nut grades & identification
Metric hex nut dimensions
Metric hex nut (fine pitch)
Metric jam nut (coarse)
Metric jam nut (fine)
Metric hex jam nylon lock nut
Prevailing torque values of lock nuts (metric)
Metric nylon insert locknut dimensions
Metric metal insert locknut dimensions
Metric hex flange nut – coarse
Metric hex flange nut – fine
Metric hex flange lock nut (nylon)
Slotted nut dimensions
Hex thick nut dimensions
Acorn nut dimensions
Flat washer dimensions
Metric flat washer dimensions
Fender washer dimensions
Split lock washer dimensions
Tooth lock washer dimensions
Forged eye bolt dimensions
Forged eye bolt capacity and strength
Clevis pin sizes
Cotter pins dimensions (Inch)
Dowel pins dimensions (Inch)
Hole sizes for dowel pins (Inch)
Metric clevis pins dimensions
Metric split pins dimensions
External circlips for shafts (Metric)
Internal circlips for bores (Metric)
Small solid rivets dimensions
Fluid Mechanics
Hydrostatic Pressure Calculator
Specific Gravity Calculator
Specific Weight Calculator
U Tube Manometer Calculator
Hooks
Crane hook types
Proof load testing of hoisting hooks
Human Factors & Ergonomics
Anthropometry
Human factors and ergonomics
Ergonomics
A simple ergonomics case study
Human Factors Simulation Software
Keys and Keyways
Depth values for shaft keyseats & hub keyways
Fit tolerances for parallel & taper keys
Gib head dimensions for taper keys
Key size vs. shaft diameter
Set screws for use over keys
Parallel & taper key dimensions and tolerances
Woodruff key sizes and dimensions
Woodruff keyseat dimensions
Limits, Fits and Tolerances
Limits, fits and tolerances calculator (ISO)
ANSI limits and fits calculator
Preferred fits and tolerances (ISO)
Linear dimensions tolerances charts
Preferred tolerances and fits (ANSI)
Interference (press & shrink) fit calculator
Press/shrink fit formulas
Precision measuring tools (shaft & hole)
Machine Elements
Types of gears
Headed press fit bushing dimensions
Mass Moment of Inertia Calculators
Hollow shaft (cylinder) inertia
Solid cylinder inertia
Hollow sphere inertia
Solid sphere inertia
Rectangle thin plate inertia
Thin rod inertia
Material Properties
Aluminum 6061
Aluminum 7075
Density of materials
Linear thermal expansion of metals
Modulus of elasticity (metals)
Poisson's ratio (metals)
Specific heat (metals)
Mechanical Coil Springs
Critical working frequency (compression)
Compression spring design (dimensional/rate)
Compression spring fatigue calculator
Compression spring design example
Compression spring (load based)
Compression springs terms & definitions
Extension spring design calculator
Extension spring (fatigue)
Extension spring (static)
Extension spring design example
Mechanical Vibrations
Cantilever beam natural frequency
Fixed beam natural frequency
Simply supported beam natural frequency
Single degree of freedom vibration
Sinusoidal (Harmonic) motion
Natural frequency of a vibrating spring
String vibration calculator
Torsional vibration (shaft)
Vibration isolation and control
Physics Calculators
Acceleration
Circular motion
Density
Dot product
Elastic potential energy
Free fall
Hooke's law
Newton's second law
Inclined plane with friction
Kinetic energy
Projectile motion
Simple harmonic motion
Simple pendulum
Tension of two ropes
2D Vector addition/subtraction (with graphs)
Vector addition
Vector cross product
Vector magnitude & angle
Work
Pipes & Tubes
CHS dimensions & properties (EN 10210-2)
Round steel tube sizes & dimensions
Schedule 40 steel pipe thickness
Schedule 80 steel pipe thickness
Schedule 80 steel pipe dimensions
Pipe dimensions & properties (Std, XS, XXS)
Steel pipe sizes
Screw Threads
UN thread calculator
Standard series for Unified inch threads
#0000, #000 & #00 thread dimensions
Tap drill size calculator
Roll form tap drill calculator
Counterbore hole dimensions calculator
Counterbore dimensions (metric SHCS)
Clearance hole calculator
NPT thread chart tap drill size
Helicoil tap sizes
Bolt torque calculator
Bolt torque factors & tension
Metric thread dimensions calculator
Metric external thread dimensions chart
Metric thread chart
Metric trapezoidal thread calculator
Trapezoidal thread chart
Metric self tapping screw thread dimensions
Metric thread pitch diameter chart
Bolt grades, strength & markings
Metric bolt grades & strength
Stainless steel bolt grades
Metric bolt torque calculator
Metric tap drill chart
Metric clearance hole calculator
ACME thread calculator
Stub ACME thread calculator
Lead screw calculator
Screw, nut & collar friction (lead screws)
Bolt screw friction coefficient table
Buttress thread calculator
Rough calculation of metric bolt sizes
Bolt sizing example for pressure vessel cap
BSPP thread chart calculator
BSPT thread sizes & dimensions
NPT pipe thread calculator
NPT thread chart tap drill size
ASME standards for screw threads
ISO standards for screw threads
Wire sizes for ISO metric thread measurement
Wire sizes for UN thread measurement
Stress – Strain Analysis
Mohr's circle for 3D stress analysis
Hooke's law (general)
Modulus of rigidity
Plane strain & principal strains
Plane strain & transformations
Plane stress with strain rosette results
Strain gauge rosette example
Principal & max shear stress calculator
Plane stress & Mohr's Circle
Strain calculation with rosette
Shear stress (single/double)
Thin-walled pressure vessel stress
Thin-walled pressure vessel example
Failure theories for ductile materials
Stress Concentration Factors
Central circular hole in a finite plate
Central circular hole in an infinite plate
Eccentric circular hole in a finite-width plate
Elliptical hole in a finite-width plate
Rectangular hole in an infinite plate
Two equal circular holes in an infinite plate
Shoulder fillet in a stepped shaft
Large circumferential groove in a circular shaft
U-shaped groove in a shaft
V-shaped groove in a shaft
Transverse circular hole in a round bar
Opposite shoulder fillets in a bar
Closely fitting round pin joint in a finite-width plate
Stress concentration formulas
Structural Analysis of Beams and Shafts
HSS design for strength
I beam design for strength
Linear thermal expansion
Stress–strain calculator
Thermal stress in a bar
Thermal stress in a uniform plate
Rectangular beam design for strength
Stresses in rotating rings (annular disks)
Torsion of solid & hollow shafts
Torsion in solid rectangular sections
Torsion in solid square sections
Example: torsion of a solid shaft
Timber beam design for strength (example)
Tools, Bits and Keys Calculators
Allen (hex) key & hex bit sizes
Hex key sizes chart
Metric hex socket key sizes chart
Spline key & bit sizes
Jobbers length twist drills
Straight shank taper length drills
Screw machine length drills
Taper shank twist drills
Tools for moulding and pressing
Ejector pins with cylindrical head
Guide bushes for presses
Machined plates for press tools
Round punches with 60° conical head
Valves Flanges Fittings Gaskets Charts
Class 25 cast iron flanges
Class 125 cast iron flanges
Class 150 flanges
Class 125 cast iron flanged fittings
Class 250 cast iron flanges
Cast iron flanged fittings – pressure/temperature
Class 25 nonmetallic gasket dimensions
Class 125 nonmetallic gasket dimensions
Class 150 nonmetallic gasket dimensions
Class 250 nonmetallic gasket dimensions
Class 300/400/600/900 gaskets
RTJ Type R metallic gasket dimensions
RTJ Type RX metallic gasket dimensions
RTJ Type BX metallic gasket dimensions
Tyres, rims and valves
Tyre load index chart
Tyre pressure load index chart
Tyre speed rating chart