Luer Tips

Needle wire gauge information from Wikipedia

Unfortunately, color code information gathered from various sources. Listed colors are (we think) the most common.

Note that the gauge size is sometimes identified with "g" or "G", and sometimes with "#".

Needle	Nominal outer diameter			Nominal inner diameter			Nominal wall thickness			Common Color
Gauge	inches	mm	tol. inches (mm)	inches	mm	tol. inches (mm)	inches	mm	tol. inches (mm)	Plastic, Metal
7	0.180	4.572	±0.001 (±0.025)	0.150	3.810	±0.003 (±0.076)	0.015	0.381	±0.001 (±0.025)
8	0.165	4.191	±0.001 (±0.025)	0.135	3.429	±0.003 (±0.076)	0.015	0.381	±0.001 (±0.025)
9	0.148	3.759	±0.001 (±0.025)	0.118	2.997	±0.003 (±0.076)	0.015	0.381	±0.001 (±0.025)
10	0.134	3.404	±0.001 (±0.025)	0.106	2.692	±0.003 (±0.076)	0.014	0.356	±0.001 (±0.025)
11	0.120	3.048	±0.001 (±0.025)	0.094	2.388	±0.003 (±0.076)	0.013	0.330	±0.001 (±0.025)
12	0.109	2.769	±0.001 (±0.025)	0.085	2.159	±0.003 (±0.076)	0.012	0.305	±0.001 (±0.025)
13	0.095	2.413	±0.001 (±0.025)	0.071	1.803	±0.003 (±0.076)	0.012	0.305	±0.001 (±0.025)
14	0.083	2.108	±0.001 (±0.025)	0.063	1.600	±0.003 (±0.076)	0.01	0.254	±0.001 (±0.025)	14: Dark Green
15	0.072	1.829	±0.0005 (±0.013)	0.054	1.372	±0.0015 (±0.038)	0.009	0.229	±0.0005 (±0.013)	15: Orange
16	0.065	1.651	±0.0005 (±0.013)	0.047	1.194	±0.0015 (±0.038)	0.009	0.229	±0.0005 (±0.013)	16: Purple
17	0.058	1.473	±0.0005 (±0.013)	0.042	1.067	±0.0015 (±0.038)	0.008	0.203	±0.0005 (±0.013)	17: White
18	0.050	1.270	±0.0005 (±0.013)	0.033	0.838	±0.0015 (±0.038)	0.0085	0.216	±0.0005 (±0.013)	18: Pink
19	0.042	1.067	±0.0005 (±0.013)	0.027	0.686	±0.0015 (±0.038)	0.0075	0.191	±0.0005 (±0.013)	19: Brown
20	0.03575	0.9081	±0.00025 (±0.0064)	0.02375	0.603	±0.00075 (±0.019)	0.006	0.1524	±0.00025 (±0.0064)	20: Yellow
21	0.03225	0.8192	±0.00025 (±0.0064)	0.02025	0.514	±0.00075 (±0.019)	0.006	0.1524	±0.00025 (±0.0064)	21: Light Green
Luer Tip, Metal, Short, with 0.50 mm ID
22	0.02825	0.7176	±0.00025 (±0.0064)	0.01625	0.413	±0.00075 (±0.019)	0.006	0.1524	±0.00025 (±0.0064)	22: Black
Luer Tip, Metal, Short, with 0.40 mm ID
22s	0.02825	0.7176	±0.00025 (±0.0064)	0.006	0.152	±0.00075 (±0.019)	0.0111	0.2826	±0.00025 (±0.0064)
23	0.02525	0.6414	±0.00025 (±0.0064)	0.01325	0.337	±0.00075 (±0.019)	0.006	0.1524	±0.00025 (±0.0064)	23: Light Blue
24	0.02225	0.5652	±0.00025 (±0.0064)	0.01225	0.311	±0.00075 (±0.019)	0.005	0.1270	±0.00025 (±0.0064)	24: Red
25	0.02025	0.5144	±0.00025 (±0.0064)	0.01025	0.260	±0.00075 (±0.019)	0.005	0.1270	±0.00025 (±0.0064)	25: Dark Blue
26	0.01825	0.4636	±0.00025 (±0.0064)	0.01025	0.260	±0.00075 (±0.019)	0.004	0.1016	±0.00025 (±0.0064)	26: Beige
Luer Tip, Metal, Short, with 0.25 mm ID
26s	0.01865	0.4737	±0.00025 (±0.0064)	0.005	0.127	±0.00075 (±0.019)	0.0068	0.1734	±0.00025 (±0.0064)
27	0.01625	0.4128	±0.00025 (±0.0064)	0.00825	0.210	±0.00075 (±0.019)	0.004	0.1016	±0.00025 (±0.0064)	27: Grey
Luer Tip, Metal, Short, with 0.20 mm ID
28	0.01425	0.3620	±0.00025 (±0.0064)	0.00725	0.184	±0.00075 (±0.019)	0.0035	0.0889	±0.00025 (±0.0064)
29	0.01325	0.3366	±0.00025 (±0.0064)	0.00725	0.184	±0.00075 (±0.019)	0.003	0.0762	±0.00025 (±0.0064)
30	0.01225	0.3112	±0.00025 (±0.0064)	0.00625	0.159	±0.00075 (±0.019)	0.003	0.0762	±0.00025 (±0.0064)
Luer Tip, Metal, Short, with 0.18 mm ID											30: Lavender
31	0.01025	0.2604	±0.00025 (±0.0064)	0.00525	0.133	±0.00075 (±0.019)	0.0025	0.0635	±0.00025 (±0.0064)
Luer Tip, Metal, Short, with 0.15 mm ID
32	0.00925	0.2350	±0.00025 (±0.0064)	0.00425	0.108	±0.00075 (±0.019)	0.0025	0.0635	±0.00025 (±0.0064)
33	0.00825	0.2096	±0.00025 (±0.0064)	0.00425	0.108	±0.00075 (±0.019)	0.002	0.0508	±0.00025 (±0.0064)
Luer Tip, Metal, Short, with 0.10 mm ID
34	0.00725	0.1842	±0.00025 (±0.0064)	0.00325	0.0826	±0.00075 (±0.019)	0.002	0.0508	±0.00025 (±0.0064)

Note: Gauges in BOLD (even sizes, 14-30) are in stock in metal.

Note: Color is for plastic luer tips, and may not be standard for all manufacturers.