AS568 300 Series

AS568 300-series dash numbers 309–395 with 0.139 inch (3.53 mm) cross section for heavy hydraulics and process equipment.

Cross section 0.139" (3.53 mm) · Dash 309–395 · 87 sizes

Series Overview

AS568 300 Series groups 87 AS568 dash numbers (309–395) sharing a 0.139" (3.53 mm) cross section. Inside diameters span 0.275" to 6.725" ID (7.0–170.8 mm). These sizes dominate heavy machinery, large cylinders, process equipment because the 3.53 mm cord diameter balances conformability, extrusion resistance, and groove width in standard SAE and industrial glands. Select a dash number below or use the size converter to cross-reference ISO 3601 and JIS B 2401 equivalents.

Full AS568 chart Size converter AS568 guide

Dash Number	ID (inch)	CS (inch)	ID (mm)	CS (mm)	Action
AS568-309	0.275	0.139	6.99	3.53	View
AS568-310	0.350	0.139	8.89	3.53	View
AS568-311	0.425	0.139	10.79	3.53	View
AS568-312	0.500	0.139	12.70	3.53	View
AS568-313	0.575	0.139	14.60	3.53	View
AS568-314	0.650	0.139	16.51	3.53	View
AS568-315	0.725	0.139	18.41	3.53	View
AS568-316	0.800	0.139	20.32	3.53	View
AS568-317	0.875	0.139	22.22	3.53	View
AS568-318	0.950	0.139	24.13	3.53	View
AS568-319	1.025	0.139	26.03	3.53	View
AS568-320	1.100	0.139	27.94	3.53	View
AS568-321	1.175	0.139	29.84	3.53	View
AS568-322	1.250	0.139	31.75	3.53	View
AS568-323	1.325	0.139	33.65	3.53	View
AS568-324	1.400	0.139	35.56	3.53	View
AS568-325	1.475	0.139	37.47	3.53	View
AS568-326	1.550	0.139	39.37	3.53	View
AS568-327	1.625	0.139	41.27	3.53	View
AS568-328	1.700	0.139	43.18	3.53	View
AS568-329	1.775	0.139	45.08	3.53	View
AS568-330	1.850	0.139	46.99	3.53	View
AS568-331	1.925	0.139	48.89	3.53	View
AS568-332	2.000	0.139	50.80	3.53	View
AS568-333	2.075	0.139	52.70	3.53	View
AS568-334	2.150	0.139	54.61	3.53	View
AS568-335	2.225	0.139	56.52	3.53	View
AS568-336	2.300	0.139	58.42	3.53	View
AS568-337	2.375	0.139	60.32	3.53	View
AS568-338	2.450	0.139	62.23	3.53	View
AS568-339	2.525	0.139	64.13	3.53	View
AS568-340	2.600	0.139	66.04	3.53	View
AS568-341	2.675	0.139	67.94	3.53	View
AS568-342	2.750	0.139	69.85	3.53	View
AS568-343	2.825	0.139	71.75	3.53	View
AS568-344	2.900	0.139	73.66	3.53	View
AS568-345	2.975	0.139	75.56	3.53	View
AS568-346	3.050	0.139	77.47	3.53	View
AS568-347	3.125	0.139	79.38	3.53	View
AS568-348	3.200	0.139	81.28	3.53	View
AS568-349	3.275	0.139	83.18	3.53	View
AS568-350	3.350	0.139	85.09	3.53	View
AS568-351	3.425	0.139	86.99	3.53	View
AS568-352	3.500	0.139	88.90	3.53	View
AS568-353	3.575	0.139	90.80	3.53	View
AS568-354	3.650	0.139	92.71	3.53	View
AS568-355	3.725	0.139	94.61	3.53	View
AS568-356	3.800	0.139	96.52	3.53	View
AS568-357	3.875	0.139	98.42	3.53	View
AS568-358	3.950	0.139	100.33	3.53	View
AS568-359	4.025	0.139	102.23	3.53	View
AS568-360	4.100	0.139	104.14	3.53	View
AS568-361	4.175	0.139	106.04	3.53	View
AS568-362	4.250	0.139	107.95	3.53	View
AS568-363	4.325	0.139	109.86	3.53	View
AS568-364	4.400	0.139	111.76	3.53	View
AS568-365	4.475	0.139	113.66	3.53	View
AS568-366	4.550	0.139	115.57	3.53	View
AS568-367	4.625	0.139	117.47	3.53	View
AS568-368	4.700	0.139	119.38	3.53	View
AS568-369	4.775	0.139	121.28	3.53	View
AS568-370	4.850	0.139	123.19	3.53	View
AS568-371	4.925	0.139	125.09	3.53	View
AS568-372	5.000	0.139	127.00	3.53	View
AS568-373	5.075	0.139	128.91	3.53	View
AS568-374	5.150	0.139	130.81	3.53	View
AS568-375	5.225	0.139	132.71	3.53	View
AS568-376	5.300	0.139	134.62	3.53	View
AS568-377	5.375	0.139	136.53	3.53	View
AS568-378	5.450	0.139	138.43	3.53	View
AS568-379	5.525	0.139	140.34	3.53	View
AS568-380	5.600	0.139	142.24	3.53	View
AS568-381	5.675	0.139	144.14	3.53	View
AS568-382	5.750	0.139	146.05	3.53	View
AS568-383	5.825	0.139	147.95	3.53	View
AS568-384	5.900	0.139	149.86	3.53	View
AS568-385	5.975	0.139	151.76	3.53	View
AS568-386	6.050	0.139	153.67	3.53	View
AS568-387	6.125	0.139	155.57	3.53	View
AS568-388	6.200	0.139	157.48	3.53	View
AS568-389	6.275	0.139	159.38	3.53	View
AS568-390	6.350	0.139	161.29	3.53	View
AS568-391	6.425	0.139	163.19	3.53	View
AS568-392	6.500	0.139	165.10	3.53	View
AS568-393	6.575	0.139	167.00	3.53	View
AS568-394	6.650	0.139	168.91	3.53	View
AS568-395	6.725	0.139	170.81	3.53	View

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