Engineering Reference Charts
Gauge, thread, drill, tolerance, torque and surface-finish data — every table in full, with the standard it comes from.
- Charts
- 12
- Tables
- 40
- Rows
- 783
- Revised
- 2026-08-11
Bolt Torque Chart24 rows
Torque and clamp load for SAE Grade 2, 5 and 8 inch bolts and metric class 8.8, 10.9 and 12.9 bolts, dry and lubricated, at 75% of proof load.
Common Engineering Material Properties32 rows
Density, tensile and yield strength, hardness and Young's modulus for 16 common engineering metals and plastics, in both SI and imperial units, with per-row verification status.
Drill Size Chart274 rows
Every number, letter, fractional and common metric drill with its decimal inch and millimeter diameter, per ANSI/ASME B94.11M.
GD&T Symbols Chart (ASME Y14.5)35 rows
All geometric characteristic symbols with category, datum requirement and a plain-English meaning, flagged for the 2018 withdrawal of concentricity and symmetry, plus the modifier symbols.
ISO 286 Fits & Tolerance Chart (Hole Basis)68 rows
Preferred hole-basis fits, IT6–IT11 standard tolerance grades to 120 mm, and full deviation tables for H7/g6, H7/h6, H8/f7, H7/k6, H7/p6 and H7/s6.
- 1.5.1Preferred hole-basis fits10
- 1.5.2IT grade standard tolerance values, IT6 – IT11, 0 – 120 mm8
- 1.5.3H7/g6 — Sliding / close clearance8
- 1.5.4H7/h6 — Locational clearance8
- 1.5.5H8/f7 — Close running8
- 1.5.6H7/k6 — Locational transition8
- 1.5.7H7/p6 — Press / locational interference8
- 1.5.8H7/s6 — Driving / medium interference10
Injection Molding Design Guidelines35 rows
Recommended wall thickness by polymer, draft angle by surface finish and texture, and the rib, boss and corner ratios that keep a molded part free of sink and warp.
Melting Points of Metals Chart40 rows
Melting points and melting ranges in °C and °F for 40 pure metals and engineering alloys, with solidus and liquidus given separately where they differ.
Sheet Metal Bend Radius & K-Factor Chart49 rows
Minimum inside bend radius by alloy and temper as multiples of thickness, K-factor against R/t, and K by bending method — with the two conflicting published K sets shown side by side.
Sheet Metal Gauge Chart114 rows
Gauge-to-thickness conversions for steel, galvanized steel, stainless and aluminum, gauges 3 to 30, in inches and millimeters — plus the mill tolerance band.
- 1.9.1Carbon steel — Manufacturers' Standard Gauge (MSG)28
- 1.9.2Galvanized steel — Galvanized Sheet Gauge (steel MSG + 0.0037 in)23
- 1.9.3Stainless steel — US Standard Gauge (fraction-based)24
- 1.9.4Aluminum, brass and copper — Brown & Sharpe (AWG)28
- 1.9.5Mill thickness tolerance — cold-rolled steel sheet11
Surface Finish Chart43 rows
ISO 1302 N-grades with Ra, RMS, Rz and Rt equivalents, the conversion factors between roughness parameters, and the Ra range each manufacturing process holds.
Tap Drill Chart27 rows
Tap drill sizes for UNC and UNF threads from #0 to 1/2 in at ~75% thread engagement, and for metric coarse threads M1.6 to M12 by the D−P rule.
Thread Size Chart42 rows
Unified inch threads #0 to 1-1/2 with UNC and UNF pitches, and ISO metric threads M1.6 to M24 with coarse and fine pitches and basic minor diameters.