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SAE 2 Bolt Flange Clamps

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SAE code 61 2-screw bolt flange connections are used as hydraulic flange clamps, only low working pressure rating as like the SAE J518-1 (code 61) connections, but it is not SAE J518-1 4-screw flange connections.

Code 61 flange clamps used in the same standards of SAE J518-1 port dimensions, and flange head dimensions, also compatible with ISO 6162-1 port connections and flange heads.

Material of SAE 2-screw flange clamps connections:

Flange clamps material is carbon steel C45, stainless steel 304, 316, or 316L.

Dimensions, torques, and pressures for code 61 flange clamp assemblies

type 1 with metric screw class 10.9.

			Dimensions in mm unless noted
Nominal Size						Type 1 (Metric Screw) Class 10.9
Metric Size	Dash Size	O-ring Size	Flat Washer (optional)	d₁ ref	Clamp Load^h N	d₃ Screw Thread^c	L₁ Screw Length^d	Screw Torque Nm +10%/ -0%	Maximum Working Pressure^b MPa	Minimum Burst Pressure^b MPa
13	-8	210	M8	13	23500	M8	25	32	2	8
19	-12	214	M10	19.2	41200	M10	30	70	2	8
25	-16	219	M10	25.6	41200	M10	30	70	2	8
32	-20	222	M10	32	41200	M10	30	70	2	8
38	-24	225	M12	38.2	63700	M12	35	130	2	8
51	-32	228	M12	51	63700	M12	35	130	2	8
64	-40	232	M12	63.5	63700	M12	40	130	2	8
76	-48	237	M16	76.2	108000	M16	50	295	2	8
89	-56	241	M16	89	108000	M16	50	295	2	8
102	-64	245	M16	101.6	108000	M16	50	295	2	8
127	-80	253	M16	127	108000	M16	55	295	2	8

type 2 with inch screw grage8.

			Dimensions in mm unless noted
Nominal Size						Type 1 (Metric Screw) Class 10.9
Metric Size	Dash Size	O-ring Size	Flat Washer (optional)	d₁ ref	Clamp Load^h N	d₃ Screw Thread^c	L₁ Screw Length^d	Screw Torque Nm +10%/ -0%	Maximum Working Pressure^b MPa	Minimum Burst Pressure^b MPa
13	-8	210	M8	13	23500	5/16-18	32	32	2	8
19	-12	214	M10	19.2	41200	3/8-16	32	60	2	8
25	-16	219	M10	25.6	41200	3/8-16	32	60	2	8
32	-20	222	M10	32	41200	7/16-14	38	92	2	8
38	-24	225	M12	38.2	63700	1/2-13	38	150	2	8
51	-32	228	M12	51	63700	1/2-13	38	150	2	8
64	-40	232	M12	63.5	63700	1/2-13	44	150	2	8
76	-48	237	M16	76.2	108000	5/8-11	44	295	2	8
89	-56	241	M16	89	108000	5/8-11	51	295	2	8
102	-64	245	M16	101.6	108000	5/8-11	51	295	2	8
127	-80	253	M16	127	108000	5/8-11	57	295	2	8

Dimensions of code 61 2 bolt flange clamp

Part no. Explanation: FCO-xx(Dash number)

A code 61 flange clamp for use with metric screws made of carbon steel size DN 32 (-20)

Dimensions in mm unless noted
Nominal Size		d4	d5	d6	L3	L4	L6	L7	L8	L9	r1	r2
Metric Size	Dash Size	±0.25	±0.25	±0.25	±0.25	±0.25	±0.25	±0.25	±0.25	±0.8	ref	ref
13	-8	30.95	24.25	8.9	6.2	12.7	57.9	41.93	20.97	46	8	23
19	-12	38.9	32.15	10.6	6.2	14.2	69.6	52.52	26.26	52.3	8.5	26.2
25	-16	45.25	38.5	10.6	7.5	15.8	75.5	58.58	29.29	58.7	8.5	29.4
32	-20	51.6	43.7	10.6^a	7.5	14.2	87	66.01	33.01	73.2	10.5	36.6
38	-24	61.1	50.8	13.3	7.5	15.8	102.5	78.49	39.25	82.6	12	41.3
51	-32	72.25	62.75	13.3	9	15.8	112.8	88.84	44.42	96.8	12	48.4
64	-40	84.95	74.95	13.3	9	19.1	127.4	102.39	51.2	108.7	12.5	54.4
76	-48	102.4	90.95	16.7	9	22.4	151.1	123.10	61.55	131.1	14	65.6
89	-56	115.1	102.4	16.7	10.7	22.4	170.4	139.48	69.74	139.7	15.5	69.9
102	-64	127.8	115.1	16.7	10.7	25.4	182.6	151.67	75.84	152.4	15.5	76.2
127	-80	153.2	140.5	16.7	10.7	28.5	209.1	178.07	89.04	180.9	15.5	90.5

Cross table Flange Dash size to Normal flange size to DN size

SAE J518 code 61/62 Flange dash size	Nominal Flange Size In	Nominal Size DN mm
-8	1/2	13
-12	3/4	19
-16	1	25
-20	1-1/4	32
-24	1-1/2	38
-32	2	51
40	2-1/2	64
-48	3	76
-56	3-1/2	89
-64	4	102
-80	5	127

SAE Oval Flange Connection for air compressor

FCA-xx(L7 size) It is difference L7 size from SAE J518-2 series.

Part No.	d4	d5	d6	L3	L4	L6	L7	L8	L9	r1	r2
FCA-44	21	19	11	7.5	7.8	61	44	22	34	9.85	17
FCA-70	30	28	13.5	7.5	12	96	70	35	56	13	28
FCA-751A	45.25	38.8	11	7.5	15	100	75	37.5	72	13	36
FCA-75B	51.6	44.1	13.5	7.6	18	100	75	37.5	72	13	36
FCA-85	61.1	51.2	13.1	7.5	18	111	85	42.5	30	13	40
FCA-90	61.1	51.2	13.1	7.5	18	120	90	45	80	15	40

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