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Weight Chart for DIN 912 / ISO 4762 / GB70.1 Socket Head Cap Screws

Accurate weight data is essential for engineering calculations, shipping cost estimation, and procurement planning. At FULLERKREG, we provide comprehensive reference data for our DIN 912 / ISO 4762 / GB70.1 socket head cap screws across the full range of diameters and lengths. All values represent the mass of 1,000 steel fasteners (≈ kg).

About the Standards

DIN 912, ISO 4762, and GB70.1 are equivalent standards governing the dimensional and mechanical requirements for hexagon socket head cap screws. These fasteners feature a cylindrical head with an internal hex drive, ideal for high clamping force in confined spaces.

  • DIN 912 — German standard (Deutsche Institut für Normung), widely adopted globally
  • ISO 4762 — International standard, dimensionally equivalent to DIN 912
  • GB70.1 — Chinese national standard, aligned with ISO 4762

Table 1 — Small Diameters: M1.4 to M6

Mass per 1,000 pieces (≈ kg, steel)

Length L (mm) M1.4 M1.6 M2 M2.5 M3 M4 M5 M6
2 0.055
2.5 0.060 0.085
3 0.065 0.090 0.155
4 0.075 0.100 0.175 0.345
5 0.085 0.110 0.195 0.375 0.67
6 0.095 0.120 0.215 0.405 0.71 1.50
9 0.115 0.140 0.255 0.465 0.80 1.65 2.45
10 0.135 0.160 0.295 0.525 0.88 1.80 2.70 4.70
12 0.155 0.180 0.355 0.585 0.96 1.95 2.95 5.07
16 0.220 0.415 0.705 1.16 2.25 3.45 5.75
20 0.495 0.825 1.36 2.65 4.01 6.53
25 0.975 1.61 3.15 4.78 7.59
30 1.86 3.65 5.55 8.30
35 4.15 6.32 9.91
40 4.65 7.09 11.0
45 7.86 12.1
50 8.63 13.2
55 14.3
60 15.4

Table 2 — Medium Diameters: M8 to M20

Mass per 1,000 pieces (≈ kg, steel)

Length L (mm) M8 M10 M12 M14 M16 M18 M20
10 4.70
12 10.9
16 12.1 20.9
20 13.4 22.9 32.1
25 15.0 25.4 35.7 48 71.3
30 16.9 27.9 39.3 53 77.8 111 128
35 18.9 30.4 42.9 58 84.4 120 139
40 20.9 32.9 46.5 63 91.0 129 150
45 22.9 36.1 50.1 68 106 138 161
50 24.9 39.3 54.5 73 114 147 172
55 26.9 42.5 58.9 78 122 156 183
60 28.9 45.7 63.4 84 130 165 194
65 31.0 48.9 67.8 90 138 174 205
70 33.0 52.1 71.3 96 154 183 216
80 37.0 58.5 80.2 108 170 203 241
90 64.9 89.1 120 186 223 266
100 71.2 98.0 132 202 243 291
110 107 144 218 263 316
120 116 156 234 283 341
130 168 250 303 366
140 180 266 323 391
150 282 343 416
160 363 441
180 403 491
200 541

Table 3 — Large Diameters: M22 to M100×4

Mass per 1,000 pieces (≈ kg, steel)

Length L (mm) M22 M24 M27 M30 M33 M36 M42 M48 M56 M64 M72×4 M80×4 M90×4 M100×4
35 211
40 224 270
45 237 285 330 500
50 250 300 352 527 630
55 263 316 374 554 665 870
60 276 330 396 581 700 910 1370
65 291 345 418 608 735 950 1420
70 306 363 440 635 770 990 1470 2040
80 336 399 484 690 830 1070 1580 2180
90 366 435 529 745 900 1150 1680 2320
100 396 471 574 800 970 1230 1790 2460
110 426 507 619 855 1040 1310 1890 2600
120 456 543 664 910 1110 1390 2000 2740
130 486 579 709 965 1180 1470 2100 2880
140 516 515 754 1020 1250 1550 2210 3020
150 546 651 799 1080 1320 1630 2320 3160
160 576 687 844 1130 1390 1710 2420 3300 4880
180 636 759 934 1240 1530 1870 2640 3590 5270 7250
200 696 831 1020 1350 1670 2030 2860 3870 5650 7750 9950
220 756 903 1110 1460 1810 2190 3080 4150 6040 8250 10600
240 975 1230 1570 1950 2250 3300 4430 6420 8750 11300 14300
260 1340 1680 2040 2410 3520 4710 6810 9260 11900 15100 19900 25700
280 1790 2180 2570 3740 4990 7200 9760 12600 15800 20900 26900
300 1900 2320 2730 3960 5270 7580 10300 13300 16600 21900 28200

How to Use This Weight Chart

This reference table enables engineers and procurement teams to:

  • Estimate shipment weight — multiply the kg/1,000 pcs value by your order quantity (in thousands)
  • Calculate freight costs — use actual weight for accurate logistics budgeting
  • Verify packing specifications — confirm carton weights against declared values
  • Support BOM costing — integrate weight data into bill-of-materials cost models

Example: Ordering 5,000 pcs of M8 × 30mm socket head cap screws:
16.9 kg/1,000 pcs × 5 = 84.5 kg gross weight (steel, before packaging)

Material & Density Note

All weight values are calculated for carbon steel (density ≈ 7.85 g/cm³). For stainless steel variants, apply the following correction factors:

  • 304 Stainless Steel (density ≈ 7.93 g/cm³): multiply by 1.010
  • 316 Stainless Steel (density ≈ 7.98 g/cm³): multiply by 1.017

At FULLERKREG, we supply DIN 912 socket head cap screws in carbon steel (Grade 12.9, 10.9, 8.8), 304 stainless steel, and 316 stainless steel across the full size range shown above. Custom lengths and non-standard sizes are available upon request.

Ordering & Technical Support

For bulk orders, custom specifications, or material certification requests (mill test reports, SGS reports), contact the FULLERKREG technical team. We provide:

  • Full traceability documentation (heat numbers, lot certificates)
  • SGS-validated material certifications for food-grade and export applications
  • Competitive pricing for OEM and wholesale quantities
  • Fast lead times with global shipping capability

Disclaimer: Weight values are reference data based on nominal dimensions per DIN 912 / ISO 4762 / GB70.1. Actual weights may vary slightly due to manufacturing tolerances and surface treatment. Always confirm with FULLERKREG technical documentation for critical applications.

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