Fasteners
Thread callouts, tap drill sizes, clearance/countersink/counterbore dimensions, and Heli-Coil inserts for SAE and metric fasteners.
Open Fasteners →— Mechanical Reference Material
Torque Specs
Tightening torque and preload for a specific joint — grade, head style, washers, locknuts, threadlocker, and clamped material — plus nut factors and grade strengths.
Open Torque Specs →GD&T
ASME Y14.5-2009 geometric characteristic and modifying symbols, with datum, MMC/LMC and bonus-tolerance rules.
Open GD&T →Alloys
A filterable reference of common ferrous and non-ferrous alloys, with mechanical, thermal, and electrical properties.
Open Alloys →Bearings/Fits
Bearing type comparison, ISO fit selection, metric bore codes, and L10 rating life formulas.
Open Bearings/Fits →Springs
Spring types, common wire materials, spring index guidelines, and Belleville washer stacking.
Open Springs →Belts/Chains/Gears
V-belt and timing belt pitch standards, ANSI roller chain sizes, and gear tooth (module/diametral pitch) standards.
Open Belts/Chains/Gears →Pipe/Tube/Thread
NPS/schedule sizing, tube OD/wall gauges, and NPT/BSPP/BSPT thread standard comparison.
Open Pipe/Tube/Thread →Welding
AWS weld symbols, joint types, filler metal selection, and a welding process comparison.
Open Welding →O-Rings/Seals
AS568 O-ring sizing, material compatibility, and seal type comparison beyond O-rings.
Open O-Rings/Seals →Alignment Pin
Clearance/transition/interference fit classes, IT tolerance grades by machining process, and an MS16556 dowel pin finder by diameter.
Open Alignment Pin →Hardness Conversion
ASTM E140 conversion tables between Brinell, Vickers, Rockwell, superficial Rockwell, Knoop and Scleroscope hardness, by material.
Open Hardness Conversion →Flange P–T Ratings
ASME B16.5-2020 pressure–temperature ratings for Class 150 to 2500 flanges, for material Groups 1 to 3 by ASTM grade, interpolated at any temperature.
Open Flange P–T Ratings →