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DIN 912 Weight Chart — Mass Per 1000 Pieces (Steel & Stainless)

DIN 912 Weight Chart — Mass Per 1000 Pieces (Steel & Stainless)

Accurate weight data is a critical input for procurement planning, freight cost estimation, and bill-of-materials (BOM) costing in any fastener sourcing project. The DIN 912 weight chart below provides mass-per-1,000-pieces values in kilograms for socket head cap screws — also known as DIN 912 Allen bolts — covering thread sizes from M1.4 to M100 across the full range of standard lengths. Weight values are calculated based on nominal dimensions per DIN 912 / ISO 4762 / GB70.1 for carbon steel (density 7.85 g/cm³). It is important to note that DIN 912 PDF dimensional data distinguishes between DIN 912 full thread and partial thread configurations: full thread fasteners carry marginally less material in the shank, which can produce a small but measurable weight difference in longer lengths. For standard procurement and logistics calculations, the values in this chart — based on nominal geometry — provide sufficient accuracy for carton weight verification, freight declarations, and BOM cost modeling across all standard DIN 912 thread pitch designations.

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 (Deutsches 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

Stainless Steel Weight Correction

All values in the tables above are based on carbon steel (density 7.85 g/cm³). When sourcing DIN 912 Allen bolt fasteners in stainless steel grades, apply the following material correction factors to obtain accurate mass-per-1,000-pieces figures for freight and BOM calculations:

  • 304 Stainless Steel (density ≈ 7.93 g/cm³): multiply steel weight by 1.010
    Example: M8×30 in 304 SS → 16.9 × 1.010 = 17.07 kg/1,000 pcs
  • 316 Stainless Steel (density ≈ 7.98 g/cm³): multiply steel weight by 1.017
    Example: M8×30 in 316 SS → 16.9 × 1.017 = 17.19 kg/1,000 pcs

It is worth noting that DIN 912 thread pitch does not affect weight correction calculations. All standard DIN 912 fasteners use ISO metric coarse pitch threads as defined in the specification — there is no fine-pitch variant within the DIN 912 standard itself. The correction factor applies uniformly across all thread sizes and lengths. For DIN 912 tolerances that govern dimensional variation and their downstream effect on mass, refer to the dedicated tolerances reference page. FULLERKREG supplies DIN 912 socket head cap screws in 304 (A2-70) and 316 (A4-80) stainless steel with SGS-validated material certifications available on request.

How to Use This Weight Chart

The DIN 912 weight chart supports three primary use cases for procurement and logistics teams working with socket head cap screws and Allen bolt fasteners:

1. Calculating Freight Weight
Multiply the kg/1,000 pcs value from the table by your order quantity expressed in thousands of pieces. This gives the net fastener weight before packaging, which can then be adjusted for carton and dunnage tare weight to arrive at gross shipment weight for freight declarations and carrier bookings.

2. BOM Cost Modeling
Weight-based pricing is common for bulk fastener procurement, particularly for larger diameters (M20 and above). Use the chart values to convert unit-price-per-kg quotations into per-piece cost equivalents, or to validate supplier pricing against theoretical weight. Cross-reference with the DIN 912 PDF for nominal dimensions used in weight derivation.

3. Packaging Specification Verification
Confirm declared carton weights against calculated fastener mass to identify discrepancies in packing lists. This is particularly useful for import customs declarations and third-party inspection (SGS, BV) weight verification.

Worked Example: Ordering 5,000 pieces of M8×30mm DIN 912 Allen bolt in carbon steel:
16.9 kg/1,000 pcs × 5 = 84.5 kg net fastener weight (before packaging)

For DIN 912 full thread configurations where the threaded portion extends to within 2× pitch of the head bearing face, the actual weight will be marginally lower than the nominal value shown — typically within 0.5–1.5% for lengths up to 3× diameter. This difference is negligible for standard freight calculations but may be relevant for high-precision BOM costing on large-volume orders.

Download DIN 912 Weight Chart PDF

A printable version of the complete DIN 912 weight chart is available as a free PDF download. The document covers all standard sizes from M1.4 to M100, formatted for A4 printing with clear table layout suitable for workshop, warehouse, and procurement office use. No registration required.

DIN 912 Weight Chart PDF — Complete Mass Reference for Socket Head Cap Screws

Format: PDF  |  Layout: A4 Printable  |  Content: M1.4–M100, steel & stainless correction factors, all standard lengths

⬇ Download DIN 912 Weight Chart PDF — Free

The PDF download is available on the DIN 912 PDF specification page. Opens in a new tab. Compatible with Adobe Acrobat Reader and all standard PDF viewers.

Related Resources

Engineers and procurement teams working with DIN 912 socket head cap screws may also find the following reference pages useful:

  • DIN 912 PDF Specification — Complete dimensional data, thread pitch chart, tolerance tables, and technical drawing for DIN 912 / ISO 4762 socket head cap screws. Free A4 PDF download included.
  • DIN 912 ISO 4762 Equivalent — Detailed cross-reference of DIN 912 and ISO 4762 dimensional equivalence, grade marking differences, and interchangeability guidance for global procurement.
  • DIN 912 tolerances — Reference guide covering socket tolerance h13, thread tolerance 6g, head diameter limits, and their practical implications for fit and function in precision assemblies.
  • DIN 912 full thread — Technical explanation of full thread vs partial thread length configurations, minimum thread engagement requirements, and selection guidance by application type.

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, and 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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