D Type Joining Shackle
The D Type Joining Shackle—also widely referred to as a D joining shackle, end shackle, D type end shackle, D type anchor shackle, anchor shackle D type, or simply a D shackle—is a fundamental component in any reliable marine mooring system. Designed to create secure, load-bearing connections between lengths of anchor chain or between chain and other fittings, this shackle is essential for the integrity and safety of vessels and offshore installations.
Manufactured to the highest industry standards, our anchor chain connecting shackles are engineered for exceptional strength and durability. The distinctive “D” shape provides an optimized geometry for withstanding the immense tensile forces experienced during anchoring and mooring operations. Whether used in commercial shipping, offshore platforms, or heavy-duty marine applications, this shackle delivers uncompromising performance.
In addition to our comprehensive range of D type joining shackles, we are a leading supplier of a complete portfolio of marine shackles and anchor chain accessories. Our product line includes swivels, kenter shackles, buoy shackles, pear-shaped shackles, and many other critical connection components. If you require specific information, custom sizes, or alternative grades, please contact us by email or phone for expert assistance.
Key Features & Benefits:
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✔ Versatile Connection: Ideal for joining anchor chain segments or connecting chain to end fittings, swivels, and anchors.
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✔ High-Strength Design: The robust D-shape geometry is optimized to handle high tensile loads with minimal stress concentration.
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✔ Precision Manufactured: Produced to exacting tolerances to ensure a perfect fit with standard anchor chain dimensions.
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✔ Comprehensive Size Range: Available in nominal diameters from 12.5mm to 162mm to suit vessels and applications of all sizes.
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✔ Complete Accessory Range: We supply all necessary anchor chain fittings to complete your mooring system.
D Type Joining Shackle Dimensional Data
Below is the detailed dimensional chart for our range of D type joining shackles. All dimensions are in millimeters (mm) unless otherwise specified. Please contact us for specific grade, material, or certification requirements.
| a1 | e1 | f1 | g1 | g2 | d3 | l3 | p3 | w3 | h2 | 2R1 | 2R2 | Nominal Dia. (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 20 | 35 | 2.5 | 1.3 | 16 | 89 | 43 | 50 | 25 | 15 | 12.5 | 12.5 | 0.6 |
| 11 | 22 | 39 | 3 | 1.4 | 18 | 99 | 48 | 56 | 28 | 17 | 14 | 14 | 0.67 |
| 13 | 26 | 45 | 3 | 1.6 | 21 | 114 | 54 | 64 | 32 | 21 | 17.5 | 16 | 0.95 |
| 14 | 28 | 49 | 3.5 | 1.8 | 23 | 124 | 60 | 70 | 38 | 21 | 17.5 | 17.5 | 1.34 |
| 15 | 30 | 53 | 4 | 2 | 25 | 135 | 65 | 76 | 40 | 23 | 19 | 19 | 1.84 |
| 16 | 33 | 57 | 4 | 2 | 27 | 146 | 70 | 82 | 45 | 25 | 20.5 | 20.5 | 2.2 |
| 18 | 35 | 62 | 4.4 | 2.2 | 29 | 156 | 75 | 88 | 50 | 26 | 22 | 22 | 2.66 |
| 19 | 38 | 67 | 5 | 2.4 | 31 | 170 | 82 | 96 | 55 | 29 | 24 | 24 | 3.4 |
| 21 | 42 | 73 | 5 | 2.6 | 34 | 185 | 88 | 104 | 60 | 31 | 26 | 26 | 4.5 |
| 22 | 45 | 78 | 5.6 | 2.8 | 36 | 199 | 95 | 112 | 60 | 34 | 28 | 28 | 5.19 |
| 24 | 48 | 84 | 6 | 3 | 39 | 213 | 102 | 120 | 70 | 36 | 30 | 30 | 6.32 |
| 26 | 51 | 90 | 6.4 | 3.2 | 42 | 227 | 109 | 128 | 75 | 38 | 32 | 32 | 8.24 |
| 27 | 54 | 95 | 7 | 3.4 | 44 | 241 | 116 | 136 | 80 | 41 | 34 | 34 | 9.56 |
| 29 | 58 | 101 | 7 | 3.6 | 47 | 256 | 122 | 144 | 80 | 43 | 36 | 36 | 11.31 |
| 30 | 61 | 106 | 7.6 | 3.8 | 49 | 270 | 129 | 152 | 85 | 46 | 38 | 38 | 13.45 |
| 32 | 64 | 112 | 8 | 4 | 52 | 284 | 136 | 160 | 90 | 48 | 40 | 40 | 15.5 |
| 34 | 67 | 118 | 8.4 | 4.2 | 55 | 298 | 143 | 168 | 95 | 50 | 42 | 42 | 18.1 |
| 35 | 70 | 123 | 9 | 4.4 | 57 | 312 | 150 | 176 | 100 | 53 | 44 | 44 | 20.25 |
| 37 | 74 | 129 | 9 | 4.6 | 60 | 327 | 156 | 184 | 105 | 55 | 46 | 46 | 23.33 |
| 38.5 | 77 | 134 | 9.5 | 4.8 | 62 | 341 | 163 | 192 | 110 | 58 | 48 | 48 | 27.5 |
| 40 | 80 | 140 | 10 | 5 | 65 | 355 | 170 | 200 | 115 | 60 | 50 | 50 | 31.6 |
| 42 | 83 | 146 | 10.4 | 5.2 | 68 | 369 | 177 | 208 | 120 | 62 | 52 | 52 | 34 |
| 43 | 86 | 151 | 11 | 5.4 | 70 | 383 | 184 | 216 | 125 | 65 | 54 | 54 | 38.5 |
| 45 | 90 | 157 | 11 | 5.6 | 73 | 398 | 190 | 224 | 130 | 67 | 56 | 56 | 46 |
| 46 | 93 | 162 | 11.6 | 5.8 | 75 | 412 | 197 | 232 | 140 | 70 | 58 | 58 | 46.8 |
| 48 | 96 | 168 | 12 | 6 | 78 | 426 | 204 | 240 | 140 | 72 | 60 | 60 | 51 |
| 50 | 99 | 174 | 12.4 | 6.2 | 81 | 440 | 211 | 248 | 145 | 74 | 62 | 62 | 59.2 |
| 51 | 102 | 179 | 13 | 6.4 | 83 | 454 | 218 | 256 | 150 | 77 | 64 | 64 | 62.7 |
| 53 | 106 | 185 | 13 | 6.6 | 86 | 469 | 224 | 264 | 150 | 79 | 66 | 66 | 75 |
| 54 | 109 | 190 | 13.6 | 6.8 | 88 | 483 | 231 | 272 | 155 | 82 | 68 | 68 | 76.7 |
| 56 | 112 | 196 | 14 | 7 | 91 | 497 | 238 | 280 | 160 | 84 | 70 | 70 | 90 |
| 58 | 117 | 204 | 14.6 | 7.3 | 95 | 518 | 248 | 292 | 170 | 88 | 73 | 73 | 95 |
| 61 | 122 | 213 | 15 | 7.6 | 99 | 540 | 258 | 304 | 180 | 91 | 76 | 76 | 107 |
| 62 | 125 | 218 | 15.6 | 7.8 | 101 | 554 | 265 | 312 | 180 | 94 | 78 | 78 | 116 |
| 65 | 130 | 227 | 16 | 8 | 105 | 575 | 275 | 324 | 190 | 97 | 81 | 81 | 130 |
| 67 | 134 | 235 | 17 | 8.4 | 109 | 596 | 286 | 336 | 200 | 101 | 84 | 84 | 136 |
| 70 | 139 | 244 | 17.4 | 8.7 | 113 | 618 | 296 | 348 | 200 | 104 | 87 | 87 | 160 |
| 72 | 144 | 252 | 18 | 9 | 117 | 639 | 306 | 360 | 210 | 108 | 90 | 90 | 176 |
| 74 | 147 | 258 | 18.4 | 9.2 | 120 | 653 | 313 | 368 | 220 | 110 | 92 | 92 | 196 |
| 76 | 152 | 266 | 19 | 9.5 | 124 | 675 | 323 | 380 | 220 | 114 | 95 | 95 | 215 |
| 78 | 155 | 272 | 19.4 | 9.7 | 126 | 689 | 330 | 388 | 230 | 116 | 97 | 97 | 222 |
| 80 | 160 | 280 | 20 | 10 | 130 | 710 | 340 | 400 | 230 | 120 | 100 | 100 | 252 |
| 82 | 163 | 286 | 20.4 | 10.2 | 133 | 724 | 347 | 408 | 240 | 122 | 102 | 102 | 267 |
| 84 | 168 | 294 | 21 | 10.5 | 137 | 746 | 357 | 420 | 250 | 126 | 105 | 105 | 294 |
| 86 | 171 | 300 | 21.4 | 10.7 | 139 | 760 | 364 | 428 | 260 | 128 | 107 | 107 | 305 |
| 89 | 178 | 311 | 22 | 11 | 144 | 788 | 377 | 444 | 260 | 133 | 111 | 111 | 325 |
| 91 | 182 | 319 | 23 | 11.4 | 148 | 809 | 388 | 456 | 280 | 137 | 114 | 114 | 345 |
| 94 | 187 | 328 | 23.4 | 11.7 | 152 | 831 | 398 | 468 | 280 | 140 | 117 | 117 | 365 |
| 96 | 192 | 336 | 24 | 12 | 156 | 852 | 408 | 480 | 290 | 144 | 120 | 120 | 400 |
| 98 | 195 | 342 | 24.5 | 12.3 | 159 | 866 | 415 | 488 | 300 | 146 | 122 | 122 | 425 |
| 99 | 198 | 347 | 25 | 12.4 | 161 | 880 | 422 | 496 | 300 | 149 | 124 | 124 | 465 |
| 102 | 203 | 356 | 25.4 | 12.7 | 165 | 902 | 432 | 508 | 300 | 152 | 127 | 127 | 499 |
| 104 | 208 | 364 | 26 | 13 | 169 | 923 | 442 | 520 | 320 | 156 | 130 | 130 | 536 |
| 106 | 211 | 370 | 26.4 | 13.2 | 172 | 937 | 449 | 528 | 320 | 158 | 132 | 132 | 561 |
| 110 | 219 | 384 | 27.5 | 13.7 | 178 | 973 | 466 | 548 | 320 | 164 | 137 | 137 | 627 |
| 114 | 227 | 398 | 28.4 | 14.2 | 185 | 1008 | 483 | 568 | 350 | 170 | 142 | 142 | 698 |
| 118 | 235 | 412 | 29.4 | 14.7 | 191 | 1044 | 500 | 588 | 350 | 176 | 147 | 147 | 774 |
| 122 | 243 | 426 | 30.4 | 15.2 | 198 | 1079 | 517 | 608 | 350 | 182 | 152 | 152 | 856 |
| 126 | 251 | 440 | 31.4 | 15.7 | 204 | 1115 | 534 | 628 | 400 | 188 | 157 | 157 | 943 |
| 130 | 259 | 454 | 32.4 | 16.2 | 211 | 1150 | 551 | 648 | 400 | 194 | 162 | 162 | 1036 |
Frequently Asked Questions (FAQs)
Q1: What is the primary function of a D Type Joining Shackle in an anchor chain system?
A: The D Type Joining Shackle serves as a critical connector. Its main function is to securely join two lengths of anchor chain together. It can also be used to connect the anchor chain to other terminal fittings, such as a swivel or an end shackle attached to the anchor. It provides a strong, reliable, and detachable connection point within the overall marine mooring system.
Q2: What is the difference between this D Type Joining Shackle and a Kenter Shackle?
A: While both are used to connect chain, they differ in design and typical application. A D Type Joining Shackle is a solid, one-piece bow with a removable pin, offering high strength and a secure connection. A Kenter Shackle (or Kenter joining shackle) is a two-part, interlocking design that is often used for permanently connecting chain lengths where a smooth, continuous profile is desired to pass through a windlass gypsy. The D type is generally used for connections at the end of the chain or where a more traditional pin retention is preferred.
Q3: What materials and grades are available for these D type shackles?
A: We can supply D type anchor shackles in a range of high-strength materials and grades to match your anchor chain specifications. Common options include Grade 2 (CM490 steel), Grade 3 (CM690 steel), and offshore grades such as R3, R3S, R4, and R5. Material certificates and full traceability are available upon request.
Q4: Are these shackles certified for use on classed vessels?
A: Yes. We can supply our anchor chain fittings with certification from all major classification societies, including ABS, DNV, BV, LR, CCS, NK, KR, and RINA. Please specify your certification requirements when placing your order.
Q5: How do I select the correct size D type shackle for my anchor chain?
A: The “Nominal Diameter” in our dimensional table corresponds to the diameter of the anchor chain it is designed to connect. You should select a shackle with a nominal diameter that matches the diameter of your anchor chain. The shackle’s internal dimensions (like a1, e1) are designed to accommodate the chain link dimensions for that specific chain size. If you are unsure, please contact us with your chain details, and we can help you select the correct anchor shackle D type.
Q6: Do you offer other types of marine shackles and anchor chain accessories?
A: Absolutely. In addition to the D type joining shackle, we are a comprehensive supplier of all anchor chain accessories. Our full product list includes swivels, joining shackles, end shackles, kenter shackles, buoy shackles (A & B), pear-shaped anchor shackles, C-shaped connecting shackles, forelock shackles, and swivel groups. If you need a complete mooring system solution, we can provide all the necessary components.
Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.
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