Hex Nut Dimensions & Weight — IS 1363-3 / IS 1364-3 / ISO 4032 / ISO 4034 / DIN 934 / ASME B18.2.2

Fastener Reference — Multi-Standard Calculator

Hex Nut Dimensions, Weight & Designation

Exact dimensions, designation for drawing, weight and bearing area from actual published standards — select your standard below

IS 1363 (Part 3) / ISO 4034 IS 1364 (Part 3) / ISO 4032 DIN 934 ASME B18.2.2

Input Parameters

Steel only — IS 1363 (Part 3):2002 / ISO 4034:1999, Product Grade C

Nominal Thread Size

Material

Property Class

Quantity

mm inch (display only)

Select parameters and calculate

Choose standard, size, material & quantity, then click Calculate

Standard Designation — for Engineering Drawings & BOM —

—

⚖ Per Nut

—

📦 Total Weight

—

⬡ Bearing Area

—

π/4 × (d_w² − d²)

Dimension Specifications

Symbol & Parameter	Max / Nominal	Min	Notes

Reference Dimension Diagrams

Top View — s, e, d_w, d

Replace with dimension diagram
<img src="top-view.png">

Side View — m, m_w, s, β

Replace with dimension diagram
<img src="side-view.png">

Bearing Stress Check (Design Verification)

Uses d_w (min.) from the standard tables. Enter applied clamping force.

Applied ForcekN

Allowable σ_bN/mm²

Engineering Reference Notes

IS 1363 (Part 3) / ISO 4034 — Grade C

Scope: M5 to M64, Steel only
Thread tolerance: 7H (ISO 4759-1)
Product Grade: C
Chamfer angle β: 15° to 30°
Mating bolts: IS 1363 (Part 1/2), ISO 4016/4018
d≤M16 → Class 5; M16<d≤M39 → Class 4/4.5

IS 1364 (Part 3) / ISO 4032 — Grade A/B

Scope: M1.6 to M64, Steel / SS / Non-ferrous
Thread tolerance: 6H (tighter than Grade C)
Grade A for d≤M16; Grade B for d>M16
Steel M3–M39: Class 6, 8, 10
SS: A2-70 / A4-70 (d≤M24); A2-50 / A4-50 (M24<d≤M39)
Mating bolts: IS 1364 (Part 1/2), ISO 4014/4017

DIN 934 — Grade A/B

Scope: M1 to M160, Steel / SS / Non-ferrous
Thread tolerance: 6H
⚠ M10 s=17mm, M12 s=19mm, M22 s=32mm (differs from ISO 4032!)
Recommended for new designs: use ISO 4032/DIN 970 instead
Steel M3–M39: Class 6, 8, 10
m′ = minimum wrenching height (0.8m min)

ASME B18.2.2-2022 — Inch Series

Scope: UNC/UNF, inch dimensions
Thread Class: 2B (ASME B1.1)
NOT interchangeable with metric threads
Steel: ASTM A563 or SAE J995
SS: ASTM F594; Non-ferrous: ASTM F467
QA per ASME B18.18

Critical Dimension Difference: DIN 934 uses M10 s=17mm, M12 s=19mm, M22 s=32mm. ISO 4032 / IS 1364 uses M10 s=16mm, M12 s=18mm, M22 s=34mm. Do NOT mix Grade C and Grade A/B in the same joint.

// ─ WEIGHT (s=width across flats, m=thickness, d=nominal diameter, ρ=density) ─

A_hex = (√3 / 2) × s² // hexagonal cross-section [mm²]

A_bore = π × (d / 2)² // thread bore [mm²]

Volume = (A_hex − A_bore) × m // net volume [mm³]

Weight = Volume × ρ × 10⁻⁶ // grams (ρ in kg/m³)

// ─ BEARING AREA (d_w from standard table) ──────────────────────────────

A_b = (π / 4) × (d_w² − d²) // [mm²] — use d_w min (conservative)

σ_b = F / A_b // bearing stress [N/mm²]; F in Newtons

⚠ Add 1–3% for chamfer/washer face. Procurement tolerance: 3–5%. Zinc plating adds ~0.4–0.6mm (see ISO 4042).

IS 1363 (Part 3) / ISO 4034 (Section 5)

Hexagon nut — IS 1363 (Part 3)/ISO 4034 — M12 — 5
Format: product · standard · size · property class
Per Alteration notice in IS 1363 (Part 3):2002

IS 1364 (Part 3) / ISO 4032 (Section 5)

Hexagon nut - IS 1364 (Part 3)/ISO 4032 - M12 - 8
Per Alteration notice in IS 1364 (Part 3):2002
Add material (SS/NF) if not carbon steel

DIN 934 (Section 4)

Hexagon nut DIN 934 — M12 — 8
Add "— A" for Grade A if d ≥ M16
Example: Hexagon nut DIN 934 — M20 — 8 — A
Add "AU" suffix for free-cutting steel

ASME B18.2.2 (Section 3.13.1)

Hex Nut, ASME B18.2.2, 1/2-13, ASTM A563 Grade A, Steel, Plain
Format: product · standard · size-TPI · mechanical std · material · finish

Min Thread Engagement (General)

Steel-in-steel: minimum 0.8 × d
Steel-in-cast iron: minimum 1.0 × d
Steel-in-aluminium: minimum 1.5 × d
Standard hex nut m ≈ 0.8d (adequate for steel)
Verify per IS 4218 / ISO 965 for thread data

Surface Finishes

As-processed (default for Grade C/A/B)
Electro zinc plated — ISO 4042 / IS 1367-11
Hot-dip galvanized — ISO 1461 (oversize tap needed)
Zinc flake (Dacromet) — ISO 10683
ASME: Electroplated per ASTM F1941
Black oxide — phosphate + oil

Mating Bolt Standards

IS 1363 (Part 1): Grade C hex bolts
IS 1364 (Part 1/2): Grade A/B bolts/screws
ISO 4016 / ISO 4018 — Grade C bolts
ISO 4014 / ISO 4017 — Grade A/B bolts
DIN 931 / DIN 933 — hex bolts (Grade A/B)
ASTM A307 / A325 / A490 — US bolts

Drawing Callout Tips

Use full designation from Section 5 (see above)
Add finish suffix: e.g. "…M12 — 5 — Zn" (IS)
For BOM: quantity, designation, material, finish
Preferred sizes recommended for new designs
Specify coating thickness for critical clearances
Mark property class on bearing face

Complete Dimension Reference Tables

d ★=Pref	P (mm)	s max	s min	e min	m max	m min	mw min	dw min	Wt g (Steel)

d ★=Pref	P (mm)	s max	s min	e min	m max	m min	mw min	dw min	Wt g (Steel)

d ★=Pref	P (mm)	s max	s min	e min	m max	m min	m′ min	dw min	Wt g (Steel)

Size	Dia (in)	TPI	F min	F max	G min	G max	H min	H max	Wt g (Steel)