ENGINEERING TOOL
M30 Hex Bolt Weight Chart (in kg)
Weight Chart
| Length (mm) | Weight per piece (g) | Weight per 1,000 pcs (kg) |
|---|---|---|
| M30×40 | 432 | 432 |
| M30×45 | 455 | 455 |
| M30×50 | 479 | 479 |
| M30×60 | 526 | 526 |
| M30×70 | 577 | 577 |
Full metric length series for M30 hex bolts — weight per piece (g) and per 1,000 pcs (kg), carbon steel, ISO 4014 / GB/T 5782-2025 partially threaded basis.
Full PDF
Download the full PDF (M6–M36, all sizes)
Printable chart covering every size in this family — enter your email to get it.
Other sizes
Weight Chart
| Length (mm) | Weight per piece (g) | Weight per 1,000 pcs (kg) |
|---|---|---|
| M30×10 | 289 | 289 |
| M30×12 | 299 | 299 |
| M30×16 | 318 | 318 |
| M30×20 | 337 | 337 |
| M30×25 | 361 | 361 |
| M30×30 | 384 | 384 |
| M30×35 | 408 | 408 |
| M30×40 | 432 | 432 |
| M30×45 | 455 | 455 |
| M30×50 | 479 | 479 |
| M30×60 | 526 | 526 |
| M30×70 | 577 | 577 |
| M30×80 | 633 | 633 |
| M30×90 | 688 | 688 |
| M30×100 | 744 | 744 |
| M30×110 | 799 | 799 |
| M30×120 | 855 | 855 |
| M30×140 | 961 | 961 |
| M30×160 | 1,070 | 1,070 |
| M30×180 | 1,180 | 1,180 |
| M30×200 | 1,290 | 1,290 |
| M30×250 | 1,560 | 1,560 |
| M30×300 | 1,840 | 1,840 |
References
- GB/T 5782-2016 — Hex head bolts (CN national standard, official full text; aligns with ISO 4014 series)
- Hex head bolt dimensions (ISO 4014 series)
- GB/T 192-2003 — General purpose metric screw threads: basic profile (CN, official full text; ISO 68-1 equivalent)
- Metric thread basic profile (ISO 68-1)
- Dimensions cross-checked against industry fastener data libraries; densities are common industry values
Basis of Calculation
Carbon steel (density 7.85 g/cm³), GB/T 5782 partially threaded, coarse pitch, base-metal weight (coating excluded). Typical deviation within ±5% for standard parts; stainless 304/316 scale by density 7.93/7.98 (≈ +1.0%/+1.7%). Use measured values for trade settlement.
Matching Nut & Washer Weights
| Hex nut (ISO 4032 / GB/T 6170) M30 | 227 g per piece |
| Flat washer (ISO 7089 / GB/T 97.1) M30 | 53.6 g per piece |
Cite this chart
YAXIIO. M30 Hex Bolt Weight Chart (in kg). https://www.yaxiio.com/en/tools/bolt-weight-chart/m30 (accessed 2026-10-29).
Free to cite and embed — attribution required: “YAXIIO” + a link to this page.
FAQ
What nut fits an M30 bolt, and how much does it weigh?
A matching M30 hex nut (ISO 4032 / GB/T 6170) at about 227 g per piece; a flat washer (ISO 7089 / GB/T 97.1) runs about 53.6 g per piece.
How much heavier is an M30 bolt in 304/316 stainless, and how much does coating add?
Geometry is unchanged — only the density ratio applies: about ×1.010 for 304 and ×1.017 for 316. Coating is extra: hot-dip galvanizing typically adds 3–6%, electro zinc under 1%; chart weights are base metal without coating.
Next: work out your order, or pick the size by standard
Calculate my order
Total weight · Packing quantity · Freight estimate
Corresponding standard
DIN 933 / GB/T 5783-2025 / ISO 4017
Full size range · Per-size weight · How to choose material and grade — all on this standard page
Chart basis: GB/T 5782-2025 (partially threaded); this standard page covers GB/T 5783-2025 (fully threaded).
Related References
Bolt Torque Calculator
Tightening torque range and target preload by class and friction condition (K-factor method).
M30 Bolt Torque Chart
Same-size torque range and preload matrix by class × friction state, Nm↔ft-lb toggle, printable.
M30 Anchor Bolt Weight Chart
Same-size unit weight for straight / J-hook / L-bend / end-plate configurations by length.
Non-Standard Size? Estimate It with a CNC Quote
The sizes on this page follow the standard series. If a drawing calls for an intermediate diameter, a modified head, or a specified material grade, our CNC quote calculator prices blank weight, machining time and finishing line by line.
Disclaimer: This chart is an engineering estimation. Values are provided for selection, quotation and freight estimation only and do not constitute design or acceptance criteria.