Fastener
Weight Charts
Comprehensive weight reference tables for all major fastener types — bolts, nuts, washers, stud bolts, threaded rods, carriage bolts, rings and coated fasteners. Essential for BOM costing, shipping estimation and project planning.
8 Chart Categories
M4 to M100 Coverage
Multiple Material Densities
DIN / ISO / ASTM Based
Bolt Weight Chart
Nut Weight Chart
Washer Weight Chart
Stud Bolt Chart
Threaded Rod Chart
Carriage Bolt Chart
Ring Fastener Chart
Coated Fastener Chart
Charts:
Weight Calculator
Calculate Fastener
Weight Instantly
Enter your fastener size, quantity and material to get the total weight for BOM costing and shipping estimation. Based on theoretical weight formulas per DIN/ISO standards.
Multiple materials supported
Per piece & per 100 pcs output
Instant result
Fastener Weight Calculator
Product Type
Size (Metric)
Length (mm) — Bolts/Studs/Rods
Material
Quantity (pieces)
Weight per piece—
Weight per 100 pcs—
Total weight (100 pcs)—
How to Use
How to Read the Weight Charts
Follow these four steps to accurately calculate fastener weights for your project BOM, shipping estimate or material take-off.
01
Select Chart Type
Choose the relevant chart — bolt, nut, washer, stud bolt, threaded rod, carriage bolt, ring or coated fastener chart from the navigation tabs.
02
Find Your Size
Locate your nominal diameter (e.g. M16 or 5/8″) and the required length in the size column. Use the search bar to quickly jump to your size.
03
Apply Material Factor
Table values are for carbon/alloy steel (density 7.85 g/cm³). Multiply by the material factor in the density reference panel to convert to SS, Inconel, Titanium etc.
04
Multiply by Quantity
Multiply the weight per piece by your required quantity to get the total batch weight. Use the online calculator above for instant results across all materials.
Theoretical weight of hex head bolts (DIN 931 / ISO 4014 partially threaded) and fully threaded hex bolts (DIN 933 / ISO 4017) per piece in grams.
Carbon Steel Density 7.85 g/cm³ · DIN 931 / DIN 933
Hex Bolt Weight Formula
W = (d² × L × π/4 + Head) × ρ
W = weight (g), d = nominal diameter (cm), L = grip length (cm), ρ = material density (g/cm³)
Material Conversion Factor
W_mat = W_steel × (ρ_mat / 7.85)
Multiply table weight by material density ratio to convert to SS, Inconel, Titanium etc.
Weight per 100 pieces
W_100 = W_piece × 100 / 1000 kg
Divide total gram weight by 1000 to convert to kilograms for shipping documentation.
Hex Bolt Weight — DIN 931 / ISO 4014 (Partial Thread)
Weight per piece in grams · Carbon Steel 7.85 g/cm³ · Across multiple lengths
| Size | Thread Pitch | 25mm | 30mm | 40mm | 50mm | 60mm | 70mm | 80mm | 100mm | 120mm | 150mm | 200mm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M6 | 1.0 | 3.5 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.2 | 11.4 | 13.5 | 17.0 | 23.0 |
| M8 | 1.25 | 6.5 | 7.5 | 9.5 | 11.5 | 13.5 | 15.5 | 17.5 | 21.5 | 25.5 | 31.5 | 42.5 |
| M10 | 1.5 | 11.5 | 13.5 | 17.0 | 20.5 | 24.0 | 27.5 | 31.0 | 38.0 | 45.0 | 55.5 | 74.0 |
| M12 | 1.75 | 18.0 | 21.5 | 27.5 | 33.0 | 38.5 | 44.5 | 50.0 | 61.5 | 72.5 | 89.5 | 120.0 |
| M16 | 2.0 | 37.0 | 45.0 | 57.0 | 69.0 | 81.0 | 93.5 | 106.0 | 130.5 | 155.0 | 191.5 | 257.0 |
| M20 | 2.5 | 63.0 | 76.0 | 97.0 | 118.0 | 139.0 | 160.0 | 181.0 | 223.5 | 265.0 | 327.5 | 441.0 |
| M24 | 3.0 | — | 120.0 | 155.0 | 189.0 | 223.0 | 257.0 | 291.0 | 359.0 | 427.0 | 529.0 | 713.0 |
| M30 | 3.5 | — | — | 263.0 | 322.0 | 381.0 | 440.0 | 499.0 | 617.0 | 735.0 | 912.0 | 1230.0 |
| M36 | 4.0 | — | — | — | 488.0 | 582.0 | 676.0 | 770.0 | 958.0 | 1146.0 | 1428.0 | 1934.0 |
| M42 | 4.5 | — | — | — | 720.0 | 861.0 | 1002.0 | 1143.0 | 1425.0 | 1707.0 | 2130.0 | 2890.0 |
| M48 | 5.0 | — | — | — | — | 1175.0 | 1375.0 | 1575.0 | 1975.0 | 2375.0 | 2975.0 | 4075.0 |
| M56 | 5.5 | — | — | — | — | 1740.0 | 2040.0 | 2340.0 | 2940.0 | 3540.0 | 4440.0 | 6090.0 |
| M64 | 6.0 | — | — | — | — | — | 2880.0 | 3310.0 | 4170.0 | 5030.0 | 6320.0 | 8680.0 |
| M72 | 6.0 | — | — | — | — | — | — | 4480.0 | 5660.0 | 6840.0 | 8610.0 | 11830.0 |
| M80 | 6.0 | — | — | — | — | — | — | — | 7240.0 | 8760.0 | 11060.0 | 15240.0 |
| M100 | 6.0 | — | — | — | — | — | — | — | — | 14720.0 | 18620.0 | 25780.0 |
Weights in grams per piece for carbon/alloy steel (density 7.85 g/cm³). For stainless steel (7.93), multiply by 1.0102. For Duplex/SDX (7.80), multiply by 0.9936. Actual weights may vary ±3% based on manufacturing tolerances.
Theoretical weight per piece (grams) for standard hex nuts, heavy hex nuts and hex jam nuts per DIN 934 / ISO 4032 and ASTM A194 heavy hex specifications.
Carbon Steel 7.85 g/cm³ · DIN 934 / ASTM A194
Hex Nut Weight — DIN 934 / ISO 4032 Standard & Heavy Hex
Weight per piece in grams · Carbon Steel 7.85 g/cm³
| Size | Thread Pitch | WAF Std (mm) | Hex Nut (g) | Heavy Hex Nut (g) | Jam Nut / Half Nut (g) | Coupling Nut (g) | Weight / 100 pcs (kg) |
|---|---|---|---|---|---|---|---|
| M6 | 1.0 | 10 | 2.5 | — | 1.5 | 8.0 | 0.25 |
| M8 | 1.25 | 13 | 5.0 | — | 3.0 | 15.0 | 0.50 |
| M10 | 1.5 | 17 | 9.0 | — | 5.5 | 25.0 | 0.90 |
| M12 | 1.75 | 19 | 14.5 | — | 8.5 | 40.0 | 1.45 |
| M16 | 2.0 | 24 | 30.0 | 40.0 | 18.0 | 85.0 | 3.00 |
| M20 | 2.5 | 30 | 53.0 | 70.0 | 32.0 | 148.0 | 5.30 |
| M24 | 3.0 | 36 | 92.0 | 122.0 | 56.0 | 255.0 | 9.20 |
| M30 | 3.5 | 46 | 185.0 | 250.0 | 115.0 | 520.0 | 18.50 |
| M36 | 4.0 | 55 | 322.0 | 432.0 | 195.0 | 900.0 | 32.20 |
| M42 | 4.5 | 65 | 510.0 | 690.0 | 310.0 | 1430.0 | 51.00 |
| M48 | 5.0 | 75 | 770.0 | 1040.0 | 465.0 | 2160.0 | 77.00 |
| M56 | 5.5 | 85 | 1120.0 | 1510.0 | 680.0 | 3140.0 | 112.00 |
| M64 | 6.0 | 95 | 1600.0 | 2160.0 | 970.0 | 4490.0 | 160.00 |
| M72 | 6.0 | 105 | 2200.0 | 2960.0 | 1330.0 | 6170.0 | 220.00 |
| M80 | 6.0 | 115 | 2950.0 | 3980.0 | 1790.0 | 8290.0 | 295.00 |
WAF = Width Across Flats. Heavy hex nut weight is based on ASTM A194 heavy hex profile. Jam nut height ≈ 60% of standard nut. Coupling nut length = 3× nominal diameter. Weights in grams, carbon steel 7.85 g/cm³.
Weight per piece (grams) for plain flat washers (DIN 125 / ISO 7089) and spring lock washers (DIN 127) across all standard metric sizes.
Carbon Steel / SS · DIN 125 / ISO 7089 · DIN 127
Plain & Spring Washer Weight — DIN 125 / DIN 127 / ISO 7089
Weight per piece in grams · Carbon Steel 7.85 g/cm³
| For Bolt Size | ID (mm) | OD DIN125 (mm) | Thick (mm) | Plain Washer DIN125 (g) | Plain Washer DIN9021 Large OD (g) | Spring Washer DIN127 (g) | Weight per 100 pcs (kg) |
|---|---|---|---|---|---|---|---|
| M5 | 5.3 | 10 | 1.0 | 0.3 | 0.8 | 0.5 | 0.03 |
| M6 | 6.4 | 12 | 1.6 | 0.7 | 1.6 | 0.8 | 0.07 |
| M8 | 8.4 | 16 | 1.6 | 1.5 | 3.4 | 1.5 | 0.15 |
| M10 | 10.5 | 20 | 2.0 | 3.0 | 6.8 | 2.8 | 0.30 |
| M12 | 13.0 | 24 | 2.5 | 5.0 | 11.2 | 4.5 | 0.50 |
| M14 | 15.0 | 28 | 2.5 | 7.0 | 14.5 | 6.0 | 0.70 |
| M16 | 17.0 | 30 | 3.0 | 9.5 | 20.0 | 8.5 | 0.95 |
| M20 | 21.0 | 37 | 3.0 | 16.0 | 34.0 | 14.0 | 1.60 |
| M24 | 25.0 | 44 | 4.0 | 27.0 | 60.0 | 22.0 | 2.70 |
| M27 | 28.0 | 50 | 4.0 | 37.0 | 78.0 | 30.0 | 3.70 |
| M30 | 31.0 | 56 | 4.0 | 46.0 | 99.0 | 39.0 | 4.60 |
| M36 | 37.0 | 66 | 5.0 | 72.0 | 158.0 | 58.0 | 7.20 |
| M42 | 43.0 | 78 | 7.0 | 130.0 | 290.0 | 92.0 | 13.00 |
| M48 | 50.0 | 92 | 8.0 | 200.0 | 450.0 | 135.0 | 20.00 |
| M56 | 58.0 | 105 | 9.0 | 295.0 | 660.0 | 186.0 | 29.50 |
| M64 | 66.0 | 115 | 9.0 | 370.0 | 830.0 | — | 37.00 |
DIN 9021 Large OD washers have OD = 3× bolt diameter. For SS 304/316, multiply by 1.0102. Spring washer weights are for split-ring type DIN 127B. ID dimensions include clearance per ISO 273 medium fit.
Weight per set (stud bolt + 2 heavy hex nuts) and per piece stud bolt only, based on ASME B16.5 flange rating dimensions from Class 150 through Class 2500.
ASME B16.5 · ASTM A193 B7 / B8M · Per Set (Bolt + 2 Nuts)
Stud Bolt Weight (Bolt + 2 Heavy Hex Nuts) — ASME B16.5
Weight per set in grams · A193 B7 Carbon Steel 7.85 g/cm³
| Stud Size | Thread Pitch | Class 150 Length (mm) | Cl.150 Set Wt (g) | Class 300 Length (mm) | Cl.300 Set Wt (g) | Class 600 Length (mm) | Cl.600 Set Wt (g) | Class 900 Set Wt (g) | Class 1500 Set Wt (g) |
|---|---|---|---|---|---|---|---|---|---|
| 1/2″ (M12) | 13 TPI | 65 | 35 | 80 | 42 | 90 | 48 | 62 | 80 |
| 5/8″ (M16) | 11 TPI | 80 | 75 | 95 | 88 | 110 | 103 | 130 | 170 |
| 3/4″ (M20) | 10 TPI | 95 | 140 | 115 | 165 | 130 | 190 | 245 | 310 |
| 7/8″ (M22) | 9 TPI | 110 | 210 | 130 | 248 | 150 | 286 | 360 | 470 |
| 1″ (M24-M25) | 8 TPI | 125 | 310 | 150 | 370 | 175 | 435 | 545 | 710 |
| 1-1/8″ (M27) | 8 TPI | 135 | 430 | 165 | 520 | 195 | 610 | 760 | 990 |
| 1-1/4″ (M30) | 8 TPI | 150 | 610 | 180 | 730 | 210 | 850 | 1060 | 1380 |
| 1-3/8″ (M33) | 8 TPI | 165 | 820 | 200 | 990 | 240 | 1180 | 1480 | 1940 |
| 1-1/2″ (M36) | 8 TPI | 175 | 1060 | 215 | 1290 | 260 | 1550 | 1950 | 2560 |
| 1-5/8″ (M39) | 8 TPI | 190 | 1350 | 235 | 1660 | 285 | 2010 | 2530 | 3330 |
| 1-3/4″ (M42) | 8 TPI | 200 | 1690 | 250 | 2100 | 305 | 2550 | 3210 | 4230 |
| 2″ (M48) | 8 TPI | 225 | 2560 | 280 | 3180 | 345 | 3910 | 4920 | 6510 |
| 2-1/4″ (M56) | 8 TPI | 250 | 3760 | 315 | 4720 | 390 | 5840 | 7360 | 9760 |
| 2-1/2″ (M64) | 8 TPI | 275 | 5340 | 350 | 6780 | 440 | 8510 | 10740 | 14260 |
Set weight includes 1 stud bolt + 2 heavy hex nuts per ASME B16.5. Lengths are based on standard flange face-to-face plus 8 threads each end engagement. For B8M (SS 316) studs, multiply by 1.0102. Actual lengths and weights vary by flange manufacturer and raised face/RTJ type.
Weight per metre (kg/m) and per 1-metre standard bar (kg) for fully threaded rods per DIN 975 / ISO metric coarse thread specifications.
Carbon Steel 7.85 g/cm³ · DIN 975 · Per Metre
Threaded Rod Weight Per Metre — DIN 975 / ISO Metric
Weight in kg/metre and kg per 1m bar · Carbon Steel 7.85 g/cm³
| Size | Thread Pitch (mm) | Core Dia (mm) | Weight (kg/m) | 1m Bar (kg) | 2m Bar (kg) | 3m Bar (kg) | Weight per 100 Pcs 1m (kg) |
|---|---|---|---|---|---|---|---|
| M6 | 1.0 | 4.77 | 0.222 | 0.22 | 0.44 | 0.67 | 22.2 |
| M8 | 1.25 | 6.47 | 0.395 | 0.40 | 0.79 | 1.19 | 39.5 |
| M10 | 1.5 | 8.16 | 0.617 | 0.62 | 1.23 | 1.85 | 61.7 |
| M12 | 1.75 | 9.85 | 0.888 | 0.89 | 1.78 | 2.66 | 88.8 |
| M14 | 2.0 | 11.55 | 1.210 | 1.21 | 2.42 | 3.63 | 121.0 |
| M16 | 2.0 | 13.55 | 1.580 | 1.58 | 3.16 | 4.74 | 158.0 |
| M18 | 2.5 | 15.29 | 2.000 | 2.00 | 4.00 | 6.00 | 200.0 |
| M20 | 2.5 | 17.29 | 2.470 | 2.47 | 4.94 | 7.41 | 247.0 |
| M22 | 2.5 | 19.29 | 2.980 | 2.98 | 5.96 | 8.94 | 298.0 |
| M24 | 3.0 | 20.75 | 3.550 | 3.55 | 7.10 | 10.65 | 355.0 |
| M27 | 3.0 | 23.75 | 4.570 | 4.57 | 9.14 | 13.71 | 457.0 |
| M30 | 3.5 | 26.21 | 5.600 | 5.60 | 11.20 | 16.80 | 560.0 |
| M33 | 3.5 | 29.21 | 6.760 | 6.76 | 13.52 | 20.28 | 676.0 |
| M36 | 4.0 | 31.67 | 8.000 | 8.00 | 16.00 | 24.00 | 800.0 |
| M42 | 4.5 | 37.13 | 10.900 | 10.90 | 21.80 | 32.70 | 1090.0 |
| M48 | 5.0 | 42.59 | 14.200 | 14.20 | 28.40 | 42.60 | 1420.0 |
| M56 | 5.5 | 50.05 | 19.500 | 19.50 | 39.00 | 58.50 | 1950.0 |
| M64 | 6.0 | 57.50 | 25.600 | 25.60 | 51.20 | 76.80 | 2560.0 |
Core diameter used for weight calculation = minor diameter of thread. Formula: W (kg/m) = (Core Dia / 2)² × π × 7.85 / 10000. Standard DIN 975 rods supplied in 1m lengths; custom cut lengths available on request.
Weight per piece (grams) for round head square neck carriage bolts per DIN 603 / ASME B18.5 specifications across standard lengths.
Carbon Steel 7.85 g/cm³ · DIN 603 / ASME B18.5
Carriage Bolt Weight — DIN 603 / ISO 8677 (Round Head Square Neck)
Weight per piece in grams · Carbon Steel 7.85 g/cm³
| Size | Head Dia (mm) | 30mm | 40mm | 50mm | 60mm | 80mm | 100mm | 120mm | 150mm | 200mm |
|---|---|---|---|---|---|---|---|---|---|---|
| M6 | 14 | 5.5 | 6.8 | 8.0 | 9.3 | 11.8 | 14.4 | 16.9 | 20.7 | 27.8 |
| M8 | 18 | 10.5 | 13.0 | 15.5 | 18.0 | 23.0 | 28.0 | 33.0 | 40.5 | 55.0 |
| M10 | 22 | 18.5 | 23.0 | 27.5 | 32.0 | 41.0 | 50.0 | 59.0 | 72.5 | 99.0 |
| M12 | 26 | 29.0 | 36.5 | 44.0 | 51.5 | 66.5 | 81.5 | 96.5 | 119.0 | 163.0 |
| M16 | 34 | — | 77.0 | 93.0 | 109.0 | 141.0 | 173.0 | 205.0 | 253.0 | 349.0 |
| M20 | 40 | — | — | 158.0 | 185.0 | 240.0 | 296.0 | 352.0 | 435.0 | 602.0 |
| M24 | 47 | — | — | — | 285.0 | 374.0 | 462.0 | 550.0 | 682.0 | 948.0 |
Carriage bolt head is domed (round) with square neck beneath — weight includes both the dome head, square neck, and shank. Length is measured under head to tip of bolt. Hot-dip galvanized (HDG) versions add approximately 3–5% to the weight above.
Weight per piece (grams) for internal circlips (DIN 472), external circlips (DIN 471), and retaining rings used for shaft and bore retention.
Spring Steel / SS · DIN 471 (External) · DIN 472 (Internal)
Circlip / Retaining Ring Weight — DIN 471 & DIN 472
Weight per piece in grams · Spring Steel 7.85 g/cm³
| Shaft / Bore Dia (mm) | Ext Ring OD DIN471 (mm) | Ext Ring Thickness (mm) | Ext Ring Wt (g) | Int Ring ID DIN472 (mm) | Int Ring Thickness (mm) | Int Ring Wt (g) | Wt per 100 pcs (kg) |
|---|---|---|---|---|---|---|---|
| 10 | 9.3 | 1.0 | 0.3 | 10.7 | 1.0 | 0.4 | 0.03 |
| 12 | 11.0 | 1.0 | 0.4 | 13.0 | 1.0 | 0.6 | 0.04 |
| 15 | 14.0 | 1.0 | 0.6 | 16.2 | 1.0 | 0.9 | 0.06 |
| 17 | 16.0 | 1.0 | 0.8 | 18.2 | 1.0 | 1.1 | 0.08 |
| 20 | 18.5 | 1.2 | 1.2 | 21.5 | 1.2 | 1.6 | 0.12 |
| 25 | 23.2 | 1.2 | 1.8 | 26.9 | 1.2 | 2.3 | 0.18 |
| 30 | 27.9 | 1.5 | 2.9 | 32.1 | 1.5 | 3.8 | 0.29 |
| 35 | 32.2 | 1.5 | 3.8 | 37.8 | 1.5 | 5.1 | 0.38 |
| 40 | 37.0 | 1.75 | 5.4 | 43.5 | 1.75 | 7.2 | 0.54 |
| 50 | 46.0 | 2.0 | 8.5 | 54.2 | 2.0 | 11.4 | 0.85 |
| 60 | 55.8 | 2.0 | 12.0 | 65.5 | 2.5 | 18.0 | 1.20 |
| 80 | 74.5 | 2.5 | 20.0 | 85.0 | 2.5 | 28.0 | 2.00 |
| 100 | 93.5 | 3.0 | 33.0 | 106.0 | 3.0 | 45.0 | 3.30 |
| 120 | 112.5 | 4.0 | 57.0 | 127.0 | 4.0 | 76.0 | 5.70 |
DIN 471 = external circlips (for shafts). DIN 472 = internal circlips (for bores/housings). For stainless steel rings, multiply by 1.0102. Stainless grades A2 and A4 available on request.
Weight adjustment factors and nominal weight per piece for hot-dip galvanized (HDG), zinc electroplated, dacromet and xylan coated fasteners accounting for coating thickness.
HDG · Zinc Plated · Dacromet · Xylan/PTFE
Coating Weight Addition Factor — Per Size Range
Additional weight (grams per piece) and percentage increase due to coating · HDG per ASTM A153
| Bolt Size | Base Wt (g) M20×100 | HDG Add (g) | HDG Total (g) | Zinc Electro Add (g) | Dacromet Add (g) | Xylan/PTFE Add (g) | HDG Wt Increase % |
|---|---|---|---|---|---|---|---|
| Coating additions based on nominal bolt M-size × 100mm length. Scale proportionally for different lengths. | |||||||
| M8 × 100mm | 21.5 | 1.5 | 23.0 | 0.2 | 0.1 | 0.1 | +7% |
| M10 × 100mm | 38.0 | 2.5 | 40.5 | 0.4 | 0.2 | 0.1 | +6.6% |
| M12 × 100mm | 61.5 | 4.0 | 65.5 | 0.6 | 0.3 | 0.2 | +6.5% |
| M16 × 100mm | 130.5 | 8.0 | 138.5 | 1.2 | 0.6 | 0.4 | +6.1% |
| M20 × 100mm | 223.5 | 13.5 | 237.0 | 2.0 | 1.0 | 0.6 | +6.0% |
| M24 × 100mm | 359.0 | 21.0 | 380.0 | 3.2 | 1.6 | 1.0 | +5.8% |
| M30 × 100mm | 617.0 | 36.0 | 653.0 | 5.5 | 2.7 | 1.7 | +5.8% |
| M36 × 100mm | 958.0 | 56.0 | 1014.0 | 8.5 | 4.2 | 2.6 | +5.8% |
| M42 × 100mm | 1425.0 | 83.0 | 1508.0 | 12.5 | 6.2 | 3.9 | +5.8% |
| M48 × 100mm | 1975.0 | 115.0 | 2090.0 | 17.5 | 8.7 | 5.4 | +5.8% |
| Coating Thickness Reference: HDG = 85–100μm (ASTM A153) · Zinc Electro = 5–25μm · Dacromet = 8–12μm · Xylan = 20–35μm | |||||||
HDG weight addition based on 85μm zinc coating (density 7.13 g/cm³) per ASTM A153. For longer bolts, scale coating addition proportionally to surface area. Dacromet and Xylan coatings add minimal weight (<0.5%). Thread engagement may be affected by HDG coating — thread oversize/re-tapping may be required for certain tolerance classes.
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