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Jump Ring Info

I carry jump rings in sterling silver (.925), 14k gold filled, silver filled, jewelry brass, and copper. My wire is sized according to the American Wire Gauge. I coil the wire on a hardened steel mandrel and then cut the coil into separate jump rings with a high speed precision saw for perfectly flush cuts.

Ring sizes are made up of the gauge of the wire, and the diameter of the mandrel it is wrapped around. The size of the mandrel equals the size of the INNER diameter of the ring.

The different type of metal differs slightly in weight, so I've made a chart with the ring count per ounce troy for each of my ring sizes, as well as the approximate outer diameter of each size. Please note that these numbers are approximate, not exact, but a very good estimate. If you would like a size not listed, please contact me and I will see what I can do! 

NOTE ON INNER AND OUTER DIAMETER: The inner diameter listed is the diameter of the mandrel I coil the wire on. After coiling, some springback will occur, resulting in a slightly larger inner and outer diameter listed. The larger the diameter of the ring, the more springback there will be.

 

wire
gauge

approx.
inner diameter
(mandrel
size in mm)

approx.
outer
diameter

aspect
ratio		ring count per ounce troy
sterling
silver		14k
gold filled		silver filled

jewelry
brass

copper
12g6.0 10.2 2.9 36 42 N/A 41 41
7.0 11.2 3.4 32 42 N/A 41 41
8.0 12.2 3.9 29 42 N/A 41 41
9.0 13.2 4.4 26 42 N/A 41 41
10.0 14.2 4.9 24 42 N/A 41 41
11.0 15.2 5.4 22 42 N/A 41 41
12.0 16.2 5.8 21 42 N/A 41 41
14g3 6.3 1.8 99 115 110 115 115
3.25 6.6 2.0 94 109 105 109 109
3.5 6.8 2.1 89 104 100 104 104
3.75 7.1 2.3 85 99 95 99 99
4 7.3 2.5 81 95 91 95 95
4.25 7.6 2.6 78 91 87 91 91
4.5 7.8 2.8 74 87 83 87 87
4.75 8.1 2.9 72 84 80 83 83
5 8.3 3.1 69 81 77 80 80
5.25 8.6 3.2 66 78 74 77 77
5.5 8.8 3.4 64 75 72 75 75
5.75 9.1 3.5 62 72 69 72 72
6 9.3 3.7 60 70 67 70 70
6.25 9.6 3.8 58 68 65 68 68
6.5 9.8 4.0 56 66 63 66 66
6.75 10.1 4.1 54 64 61 64 64
7 10.3 4.3 53 62 59 62 62
8 11.3 4.9 47 55 53 55 55
9 12.3 5.5 43 50 48 50 50
10 13.3 6.1 39 46 44 46 46
11 14.3 6.8 36 42 40 42 42
12 15.3 7.4 33 39 37 39 39
16g3.0 5.6 2.3 167 199 192 195 195
3.5 6.1 2.7 150 178 172 175 175
4.0 6.6 3.1 136 161 156 159 159
4.25 6.9 3.3 130 154 149 151 151
4.5 7.1 3.5 124 148 142 145 145
4.75 7.4 3.7 119 141 137 139 139
5.0 7.6 3.9 114 136 131 133 133
5.25 7.9 4.1 110 131 126 128 128
5.5 8.1 4.3 106 126 121 124 124
5.75 8.4 4.5 102 121 117 119 119
6.0 8.6 4.6 99 117 113 115 115
6.25 8.9 4.8 95 113 109 111 111
6.5 9.1 5.0 92 110 106 108 108
6.75 9.4 5.2 89 106 103 104 104
7.0 9.6 5.4 87 103 100 101 101
8.0 10.6 6.2 77 92 89 90 90
9.0 11.6 7.0 70 83 80 81 81
10.0 12.6 7.7 64 76 73 74 74
11.0 13.6 8.5 58 69 67 68 68
12.0 14.6 9.3 54 64 62 63 63
18g2.5 4.6 2.4 331 386 386 376 376
3.0 5.1 2.9 289 338 338 329 329
3.25 5.3 3.2 273 318 318 310 310
3.5 5.6 3.4 257 300 300 293 293
3.75 5.8 3.7 244 285 285 277 277
4.0 6.1 3.9 232 270 270 264 264
4.25 6.3 4.2 221 258 258 251 251
4.5 6.6 4.4 211 246 246 240 240
4.75 6.8 4.6 202 235 235 229 229
5.0 7.1 4.9 193 226 226 220 220
5.25 7.3 5.1 186 217 217 211 211
5.5 7.6 5.4 179 208 208 203 203
5.75 7.8 5.6 172 201 201 196 196
6.0 8.1 5.9 166 193 193 189 189
6.25 8.3 6.1 160 187 187 182 182
6.5 8.6 6.3 155 181 181 176 176
6.75 8.8 6.6 150 175 175 170 170
7.0 9.1 6.8 145 169 169 165 165
8.0 10.1 7.8 129 151 151 147 147
9.0 11.1 8.8 116 136 136 132 132
10.0 12.1 9.8 106 123 123 120 120
11.0 13.1 10.7 97 113 113 110 110
12.0 14.1 11.7 84 104 104 102 102
20g2 3.7 2.5 656 748 751 746 746
2.25 3.9 2.8 602 687 690 685 685
2.5 4.2 3.1 557 635 637 633 633
2.75 4.4 3.4 518 591 593 589 589
3 4.7 3.7 484 552 554 550 550
3.25 4.9 4.0 454 518 520 516 516
3.5 5.2 4.3 428 488 490 486 486
3.75 5.4 4.6 404 461 463 460 460
4 5.7 4.9 383 437 439 436 436
4.25 5.9 5.2 364 416 417 414 414
4.5 6.2 5.5 347 396 397 395 395
4.75 6.4 5.8 332 378 380 377 377
5 6.7 6.2 317 362 363 361 361
5.25 6.9 6.5 304 347 348 346 346
5.5 7.2 6.8 292 333 334 332 332
5.75 7.4 7.1 281 321 322 320 320
6 7.7 7.4 271 309 310 308 308
6.25 7.9 7.7 261 298 299 297 297
6.5 8.2 8.0 252 288 289 287 287
6.75 8.4 8.3 244 278 279 277 277
7 8.7 8.6 236 269 270 268 268
8 9.7 9.9 209 239 240 238 238
9 10.7 11.1 188 214 215 214 214
10 11.7 12.3 171 195 195 194 194
11 12.7 13.5 156 178 179 178 178
12 13.7 14.8 144 164 165 164 164
22g2 3.3 3.1 1112 1305 1230 1261 1261
2.5 3.8 3.9 936 1098 1034 1061 1061
3 4.3 4.7 807 947 892 915 915
3.5 4.8 5.4 710 833 785 805 805
4 5.3 6.2 633 743 700 718 718
4.5 5.8 7.0 572 671 632 648 648
5 6.3 7.8 521 611 576 591 591