Anchor chain

towingcarbon steel316 stainless steel

Product Description
DIN 766 chain is a calibrated short-link welded chain manufactured to the dimensional requirements of DIN 766. It is engineered to engage reliably with metric windlass gypsies and is used for anchoring and mooring on recreational boats, yachts, fishing vessels, workboats, pontoons and small commercial vessels. Materials: Grade 3 carbon steel (finishes: hot-dip galvanized, zinc plated, black painted or self-colour) and AISI 316 stainless steel. Production batches are calibrated, proof tested, weld-inspected and verified for mechanical properties to ensure dimensional accuracy and dependable windlass operation. Not intended for overhead lifting.

Introduction
DIN 766 defines calibrated dimensions for chain pitch, inside length, outside dimensions and calibration tolerances so the chain functions correctly with windlasses built to the same metric standard. Standard sizes commonly cover 6 mm to 26 mm, with production and test data available up to 32 mm.

Product Features

• Manufactured to DIN 766 calibrated dimensions
• Grade 3 carbon steel or AISI 316 stainless steel construction
• Sizes shown from 6 mm up to 32 mm (standard commonly 6 mm to 26 mm)
• Compatible with DIN 766 metric windlass gypsies
• Available finishes: hot-dip galvanized, zinc plated, black painted or self-colour
• Calibrated, proof tested and weld-inspected
• Suitable for anchoring and marine mooring applications (NOT for overhead lifting)

Parameters and Definitions

• Grade of Chain: DIN 766 (calibrated chains using Grade 3 material)
• Working Load Limit (WLL): maximum working load applied in direct tension to an undamaged straight length of chain
• Proof Test: manufacturing test force applied under controlled tensile loading to verify manufacturing integrity (not a service load limit)
• Minimum Breaking Force: minimum force at which chain specimens break under destructive testing; used for batch verification (not a service or design limit)
• Overhead Lifting: chain is not designed or certified for overhead lifting or suspended load applications

Dimension Table (columns: SIZE (mm) | +/-MM | INSIDE LENGTH (MM) | +MM | -MM | INSIDE WIDTH MM | OUTSIDE WIDTH MM | LENGTH PER 11 LINKS MM | +MM | -MM | WEIGHT PER M KG)
SIZE | +/-MM | INSIDE LENGTH | +MM | -MM | INSIDE WIDTH | OUTSIDE WIDTH | LENGTH PER 11 LINKS | +MM | -MM | WEIGHT PER M
2 | 0.2 | 12 | 0.2 | 0.2 | 3.5 | 7.5 | 132 | 1 | 0.5 | 0.07
3 | 0.2 | 16 | 0.2 | 0.2 | 4.2 | 11 | 176 | 1.4 | 0.7 | 0.16
4 | 0.2 | 16 | 0.3 | 0.2 | 5 | 13.7 | 176 | 2.1 | 1.1 | 0.32
5 | 0.2 | 18.5 | 0.4 | 0.2 | 6 | 17 | 203.5 | 2.4 | 1.2 | 0.5
6 | 0.2 | 18.5 | 0.4 | 0.2 | 7.2 | 20.2 | 203.5 | 2.4 | 1.2 | 0.8
7 | 0.3 | 22 | 0.4 | 0.2 | 8.4 | 23.8 | 242 | 3 | 1.4 | 1.1
8 | 0.3 | 24 | 0.4 | 0.2 | 9.6 | 27.2 | 264 | 3.2 | 1.5 | 1.4
9 | 0.4 | 27 | 0.5 | 0.3 | 10.8 | 30.6 | 297 | 3.6 | 1.8 | 1.8
10 | 0.4 | 28 | 0.5 | 0.3 | 12 | 34 | 308 | 3.7 | 1.9 | 2.2
11 | 0.4 | 31 | 0.5 | 0.3 | 13.2 | 37.4 | 341 | 4 | 2 | 2.7
12 | 0.3 | 36 | 0.6 | 0.3 | 14.4 | 40.8 | 396 | 4.4 | 2.2 | 3.1
13 | 0.5 | 36 | 0.6 | 0.3 | 15.6 | 44.2 | 396 | 4.6 | 2.4 | 3.8
14 | 0.6 | 41 | 0.7 | 0.4 | 16.8 | 47.6 | 451 | 5.4 | 2.7 | 4.4
16 | 0.6 | 45 | 0.8 | 0.4 | 19.2 | 54.4 | 495 | 6 | 3 | 5.7
18 | 0.9 | 50 | 0.8 | 0.4 | 21.6 | 61.2 | 550 | 6.6 | 3.3 | 7.3
19 | 0.4 | 53 | 0.9 | 0.4 | 22.8 | 64.6 | 583 | 7 | 3.7 | 7.97
20 | 1 | 56 | 1 | 0.5 | 24 | 68 | 616 | 7.4 | 3.7 | 9
23 | 1.2 | 64 | 1.1 | 0.5 | 27.6 | 78.2 | 704 | 8.4 | 4.2 | 12
26 | 1.3 | 73 | 1.2 | 0.6 | 31.2 | 88.4 | 803 | 9.6 | 4.8 | 15
28 | 1.4 | 78 | 1.3 | 0.65 | 33.8 | 95.2 | 858 | 10.2 | 5.1 | 18
30 | 1.5 | 84 | 1.4 | 0.7 | 41 | 102 | 924 | 11 | 5.5 | 19.5
32 | 1.6 | 90 | 1.5 | 0.75 | 43 | 108.8 | 990 | 11.8 | 5.9 | 23

Standards, Packaging & Testing
MOQ: 100 Meters
Packaging options: Steel Drum / Wooden Box / Steel Pallet / Bulk Packing
Manufacturing standards: DIN 766, ISO 4565, EN 24565 and BS 7160 dimensional requirements for calibrated marine anchor chains. Product materials: Grade 3 carbon steel or AISI 316 stainless steel with calibrated short-link construction.
Testing standards: proof load testing, dimensional calibration, visual and weld inspection, mechanical property verification and minimum breaking force testing performed during production. Breaking load values are for batch verification and are not intended as service load limits.

Application & Maintenance
Suitable for anchor windlass systems, marine anchoring, yacht anchoring, fishing vessels, workboats, pontoons, marina facilities, barrier chains, security applications and general non-overhead marine uses. Inspect chain regularly for corrosion, wear, elongation, cracked welds, deformed links, coating damage and dimensional compatibility with the windlass gypsy. Chains showing excessive wear, permanent deformation or damaged welds should be removed from service.

Technical Specifications

• Standard: DIN 766 (calibrated short-link welded chain)
• Materials: Grade 3 carbon steel or AISI 316 stainless steel
• Finishes (carbon steel): hot-dip galvanized, zinc plated, black painted, self-colour
• Sizes (shown): 2 mm – 32 mm (standard commonly 6 mm – 26 mm)
• Intended use: anchor windlass systems, anchoring and mooring (NOT for overhead lifting)
• Quality control: calibration, proof testing, weld inspection and mechanical verification
• MOQ: 100 meters
• Packaging: Steel Drum, Wooden Box, Steel Pallet or Bulk Packing