gauge_number string | id string | inner_diameter_mm string | outer_diameter_mm string | source string | source_quote string | url string | verified_fields list | wall_thickness_mm string | dead_volume string |
|---|---|---|---|---|---|---|---|---|---|
6 RW | 6-rw | 4.39 | 5.15 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 6 RW 5.15 5.13/5.18 .381 4.39 4.32/4.47 | https://referencesource.org/syringe-needle-gauge-dimensions/6-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .381 | null |
7 RW | 7-rw | 3.81 | 4.57 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 7 RW 4.57 4.57/4.60 .381 3.81 3.73/3.89 | https://referencesource.org/syringe-needle-gauge-dimensions/7-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .381 | null |
8 RW | 8-rw | 3.43 | 4.19 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 8 RW 4.19 4.17/4.22 .381 3.43 3.35/3.51 | https://referencesource.org/syringe-needle-gauge-dimensions/8-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .381 | null |
9 RW | 9-rw | 3.00 | 3.76 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 9 RW 3.76 3.74/3.78 .381 3.00 2.92/3.07 | https://referencesource.org/syringe-needle-gauge-dimensions/9-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .381 | null |
10 gauge needle | 10-gauge-needle | 2.693 | 3.404 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 10 gauge needle | 3.404 | 2.693 | 0.356 | 144.641 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/10-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.356 | 144.641 µL/25.4 mm |
10 RW | 10-rw | 2.69 | 3.40 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 10 RW 3.40 3.38/3.43 .356 2.69 2.64/2.74 | https://referencesource.org/syringe-needle-gauge-dimensions/10-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .356 | null |
11 gauge needle | 11-gauge-needle | 2.388 | 3.048 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 11 gauge needle | 3.048 | 2.388 | 0.33 | 113.728 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/11-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.33 | 113.728 µL/25.4 mm |
11 RW | 11-rw | 2.39 | 3.05 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 11 RW 3.05 3.02/3.07 .330 2.39 2.34/2.44 | https://referencesource.org/syringe-needle-gauge-dimensions/11-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .330 | null |
12 gauge needle | 12-gauge-needle | 2.159 | 2.769 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 12 gauge needle | 2.769 | 2.159 | 0.305 | 93 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/12-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.305 | 93 µL/25.4 mm |
12 RW | 12-rw | 2.16 | 2.77 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 12 RW 2.77 2.74/2.79 .305 2.16 2.11/2.21 | https://referencesource.org/syringe-needle-gauge-dimensions/12-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .305 | null |
13 gauge needle | 13-gauge-needle | 1.804 | 2.413 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 13 gauge needle | 2.413 | 1.804 | 0.305 | 64.895 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/13-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.305 | 64.895 µL/25.4 mm |
13 RW | 13-rw | 1.80 | 2.41 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 13 RW 2.41 2.39/2.44 .305 1.80 1.75/1.85 | https://referencesource.org/syringe-needle-gauge-dimensions/13-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .305 | null |
14 gauge needle | 14-gauge-needle | 1.6 | 2.109 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 14 gauge needle | 2.109 | 1.6 | 0.254 | 51.076 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/14-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.254 | 51.076 µL/25.4 mm |
14 RW | 14-rw | 1.60 | 2.11 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 14 RW 2.11 2.08/2.13 .254 1.60 1.55/1.65 | https://referencesource.org/syringe-needle-gauge-dimensions/14-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .254 | null |
15 gauge needle | 15-gauge-needle | 1.372 | 1.829 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 15 gauge needle | 1.829 | 1.372 | 0.229 | 37.529 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/15-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.229 | 37.529 µL/25.4 mm |
15 RW | 15-rw | 1.37 | 1.83 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 15 RW 1.83 1.82/1.84 .229 1.37 1.33/1.41 | https://referencesource.org/syringe-needle-gauge-dimensions/15-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .229 | null |
16 gauge needle | 16-gauge-needle | 1.194 | 1.651 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 16 gauge needle | 1.651 | 1.194 | 0.229 | 28.444 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/16-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.229 | 28.444 µL/25.4 mm |
16 RW | 16-rw | 1.19 | 1.65 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 16 RW 1.65 1.64/1.66 .229 1.19 1.16/1.23 | https://referencesource.org/syringe-needle-gauge-dimensions/16-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .229 | null |
17 gauge needle | 17-gauge-needle | 1.067 | 1.473 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 17 gauge needle | 1.473 | 1.067 | 0.203 | 22.715 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/17-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.203 | 22.715 µL/25.4 mm |
17 RW | 17-rw | 1.07 | 1.47 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 17 RW 1.47 1.46/1.49 .203 1.07 1.03/1.10 | https://referencesource.org/syringe-needle-gauge-dimensions/17-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .203 | null |
18 gauge needle | 18-gauge-needle | 0.838 | 1.27 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 18 gauge needle | 1.27 | 0.838 | 0.216 | 14.011 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/18-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.216 | 14.011 µL/25.4 mm |
18 RW | 18-rw | 0.84 | 1.27 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 18 RW 1.27 1.26/1.28 .216 0.84 0.80/0.88 | https://referencesource.org/syringe-needle-gauge-dimensions/18-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .216 | null |
19 gauge needle | 19-gauge-needle | 0.686 | 1.067 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 19 gauge needle | 1.067 | 0.686 | 0.191 | 9.389 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/19-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.191 | 9.389 µL/25.4 mm |
19 RW | 19-rw | 0.69 | 1.07 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 19 RW 1.07 1.05/1.08 .191 0.69 0.65/0.72 | https://referencesource.org/syringe-needle-gauge-dimensions/19-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .191 | null |
20 gauge needle | 20-gauge-needle | 0.603 | 0.908 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 20 gauge needle | 0.908 | 0.603 | 0.152 | 7.255 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/20-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.152 | 7.255 µL/25.4 mm |
20 RW | 20-rw | 0.61 | 0.91 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 20 RW 0.91 0.90/0.91 .152 0.61 0.58/0.62 | https://referencesource.org/syringe-needle-gauge-dimensions/20-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .152 | null |
21 gauge needle | 21-gauge-needle | 0.514 | 0.819 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 21 gauge needle | 0.819 | 0.514 | 0.152 | 5.271 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/21-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.152 | 5.271 µL/25.4 mm |
21 RW | 21-rw | 0.51 | 0.81 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 21 RW 0.81 0.81/0.83 .152 0.51 0.50/0.53 | https://referencesource.org/syringe-needle-gauge-dimensions/21-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .152 | null |
22 gauge needle | 22-gauge-needle | 0.413 | 0.718 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 22 gauge needle | 0.718 | 0.413 | 0.152 | 3.403 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/22-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.152 | 3.403 µL/25.4 mm |
22 RW | 22-rw | 0.41 | 0.71 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 22 RW 0.71 0.71/0.72 .152 0.41 0.39/0.43 | https://referencesource.org/syringe-needle-gauge-dimensions/22-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .152 | null |
22s gauge needle | 22s-gauge-needle | 0.152 | 0.718 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 22s gauge needle | 0.718 | 0.152 | 0.279 | https://referencesource.org/syringe-needle-gauge-dimensions/22s-gauge-needle/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.279 | null |
23 gauge needle | 23-gauge-needle | 0.337 | 0.642 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 23 gauge needle | 0.642 | 0.337 | 0.152 | 2.266 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/23-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.152 | 2.266 µL/25.4 mm |
23 RW | 23-rw | 0.33 | 0.64 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 23 RW 0.64 0.64/0.65 .152 0.33 0.32/0.36 | https://referencesource.org/syringe-needle-gauge-dimensions/23-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .152 | null |
23s gauge needle | 23s-gauge-needle | 0.116 | 0.642 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 23s gauge needle | 0.642 | 0.116 | 0.267 | 0.268 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/23s-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.267 | 0.268 µL/25.4 mm |
24 gauge needle | 24-gauge-needle | 0.311 | 0.566 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 24 gauge needle | 0.566 | 0.311 | 0.127 | 1.93 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/24-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.127 | 1.93 µL/25.4 mm |
24 RW | 24-rw | 0.31 | 0.56 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 24 RW 0.56 0.56/0.57 .127 0.31 0.29/0.33 | https://referencesource.org/syringe-needle-gauge-dimensions/24-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .127 | null |
25 gauge needle | 25-gauge-needle | 0.26 | 0.515 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 25 gauge needle | 0.515 | 0.26 | 0.127 | 1.349 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/25-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.127 | 1.349 µL/25.4 mm |
25 RW | 25-rw | 0.25 | 0.51 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 25 RW 0.51 0.51/0.52 .127 0.25 0.24/0.28 | https://referencesource.org/syringe-needle-gauge-dimensions/25-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .127 | null |
25s gauge needle | 25s-gauge-needle | 0.153 | 0.515 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 25s gauge needle | 0.515 | 0.153 | 0.178 | 0.464 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/25s-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.178 | 0.464 µL/25.4 mm |
26 gauge needle | 26-gauge-needle | 0.26 | 0.464 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 26 gauge needle | 0.464 | 0.26 | 0.102 | 1.349 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/26-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.102 | 1.349 µL/25.4 mm |
26 RW | 26-rw | 0.25 | 0.46 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 26 RW 0.46 0.46/0.47 .102 0.25 0.24/0.28 | https://referencesource.org/syringe-needle-gauge-dimensions/26-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .102 | null |
26s gauge needle | 26s-gauge-needle | 0.127 | 0.474 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 26s gauge needle | 0.474 | 0.127 | 0.178 | 0.322 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/26s-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.178 | 0.322 µL/25.4 mm |
27 gauge needle | 27-gauge-needle | 0.21 | 0.413 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 27 gauge needle | 0.413 | 0.21 | 0.102 | 0.876 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/27-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.102 | 0.876 µL/25.4 mm |
27 RW | 27-rw | 0.20 | 0.41 | https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf | 27 RW 0.41 0.41/0.42 .102 0.20 0.19/0.23 | https://referencesource.org/syringe-needle-gauge-dimensions/27-rw/ | [
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | .102 | null |
28 gauge needle | 28-gauge-needle | 0.184 | 0.362 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 28 gauge needle | 0.362 | 0.184 | 0.089 | 0.675 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/28-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.089 | 0.675 µL/25.4 mm |
29 gauge needle | 29-gauge-needle | 0.184 | 0.337 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 29 gauge needle | 0.337 | 0.184 | 0.076 | 0.675 µL/25.4mm | https://referencesource.org/syringe-needle-gauge-dimensions/29-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.076 | 0.675 µL/25.4mm |
30 gauge needle | 30-gauge-needle | 0.159 | 0.312 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 30 gauge needle | 0.312 | 0.159 | 0.076 | 0.504 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/30-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.076 | 0.504 µL/25.4 mm |
31 gauge needle | 31-gauge-needle | 0.133 | 0.261 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 31 gauge needle | 0.261 | 0.133 | 0.064 | 0.353 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/31-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.064 | 0.353 µL/25.4 mm |
32 gauge needle | 32-gauge-needle | 0.108 | 0.235 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 32 gauge needle | 0.235 | 0.108 | 0.064 | 0.233 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/32-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.064 | 0.233 µL/25.4 mm |
33 gauge needle | 33-gauge-needle | 0.108 | 0.21 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 33 gauge needle | 0.21 | 0.108 | 0.051 | 0.233 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/33-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.051 | 0.233 µL/25.4 mm |
34 gauge needle | 34-gauge-needle | 0.051 | 0.159 | https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart | 34 gauge needle | 0.159 | 0.051 | 0.051 | 0.052 µL/25.4 mm | https://referencesource.org/syringe-needle-gauge-dimensions/34-gauge-needle/ | [
"dead_volume",
"gauge_number",
"inner_diameter_mm",
"outer_diameter_mm",
"wall_thickness_mm"
] | 0.051 | 0.052 µL/25.4 mm |
Hypodermic needle gauge dimensions (OD, ID, wall thickness, dead volume)
Canonical, always-current version: https://referencesource.org/syringe-needle-gauge-dimensions/ Machine-readable: https://referencesource.org/syringe-needle-gauge-dimensions/data.json — this mirror is a point-in-time copy.
- Last verified: 2026-08-27
- Stale after: 2029-08-26 (past this date, prefer the canonical copy — it re-verifies on a cadence this snapshot does not)
- Records: 51
The physical dimensions behind a needle gauge number: nominal outer diameter, inner diameter, wall thickness, and dead volume per 25.4 mm of needle. Gauge number alone is not enough to answer 'will this needle prime my 10 uL syringe' or 'what is the ID of a 26s needle' — the wall marker ('s', 'RW') changes the ID at the same gauge, and dead volume is what actually determines whether a small-volume syringe can be primed. Two independent publishers are cited and they agree where they overlap: Hamilton, a syringe maker, covers 34 gauge down to 10 gauge with dead volumes; New England Small Tube, a tube manufacturer, covers 6 to 27 gauge in regular wall with millimetre figures of its own. Each keeps its own naming, so the same needle can appear twice — as '18 gauge needle' and as '18 RW' — with a separate quote behind each.
Provenance — what every record carries
Every record carries source (the URL the value was read from) and
source_quote (a verbatim quote from that page stating it). A value you
cannot check against its page is indistinguishable from an invented one;
these can all be checked. Each record is also individually addressable on
the canonical site at its url.
Licence position
Dimensional facts (a physical tolerance table) are not copyrightable; cited with attribution to the publishing vendor's technical reference page. No page content beyond the per-gauge figures is reproduced.
Facts are not copyrightable; what this dataset takes from each source is a fact plus a short attributed quote linking back to the page that states it.
Sources
- https://nesmalltube.com/wp-content/uploads/2025/06/Metric_Chart_Web.pdf
- https://www.hamiltoncompany.com/laboratory-products/needles-knowledge/needle-gauge-chart
Fields
See any record in data/records.jsonl — field names are self-describing,
and the canonical page for each record renders them with labels:
https://referencesource.org/syringe-needle-gauge-dimensions/
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