SAE J518 Flanges | Code 61 & 62 | Hydraulic

PM Industries manufactures, supplies, and stocks SAE J518 flanges for high-pressure hydraulic systems that need a strong, leak-resistant joint that is quick to install. Flange is a split-flange connection built for larger hose and tube sizes, which is why it shows up so often in construction equipment, industrial machinery, agricultural systems, and other heavy-duty lines. It uses a four-bolt split-flange arrangement with an O-ring seal. That layout holds a tight seal under pressure and still lets the joint come apart far more easily than most welded or threaded connections.

flange comes in two main pressure ratings, Code 61 and Code 62, so you can match the part to the working pressure and service conditions of the system. The connection is made up of a flanged head and two clamp halves drawn together by bolts. As the bolts tighten, they compress the O-ring and lock the joint in place. This design stands up well to vibration, shock, and repeated pressure cycles, which is the kind of duty hydraulic equipment sees in the field.

SAE J518 flanges work with a wide range of hydraulic components, so they fit cleanly into standardized piping and tubing systems. PM Industries supplies them in a range of sizes to suit different bore dimensions and flow rates, and the close dimensional consistency keeps installation safe and repeatable. Buyers choose them for pressure capability, long service life, easy maintenance, and dependable sealing in hard environments. They are a common pick where space, reliability, and serviceability matter, especially on equipment that runs continuously under rough field conditions.

The combination of strength, sealing, and simple installation is what keeps SAE J518 among the most trusted flange types in hydraulic and fluid power work. As a manufacturer, supplier, and stockist, PM Industries ships standard and custom SAE J518 flanges in Code 61 and Code 62 against fast quotes.

Specification SAE J518 Flange

Standards	ANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard	5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGES	DIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure Rating	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Types	Threaded, Plate, Screwed, Forged.
Supporting material	Gasket, Ring Joint, Flange Bolts
Size range	1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production technique	Forged, machined and Heat treated
Available Flange Type	Weld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face Type	Ring Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom design	As per your drawing
Test	Direct-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
Origin	Indian / USA / Korean / West Europe / Japan
Pressure Class	PN 6 TO PN 100
Thickness	Normal Pipe Size ≤ 18
Bore Diameter	Normal Pipe ≤ 10
High Temperature	Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature	Above -29 Degree C (−20°F)
Coating/Surface Treatment:	Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard Flanges	Available
Gaskets Types	Full Face, Metallic Ring, Flat Ring Gasket
Marking Standard	Name of Manufacturer
	Schedule
	Type of Flange Facing
	Pressure Class
	Nominal Pipe Size, etc
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
	Raw Materials Certificate
	100% Radiography Test Report
	Third Party Inspection Report, etc

Flange Type Available

Sae J518 Code 61 Dimensions Schedule

Normal Pipe Size Size Of Flanges	Dash Size	BØ		T		F		G		PORT THREAD & BOLT LENGTH
										PORT	LENGTH Of BOLT	PORT	BOLT
inches		millimeter	inches	millimeter	inches	millimeter	inches	millimeter	inches	UNC	inches	METRIC	millimeter
CODE 61
1/2	-08	30,2	1.19	6,73	0.265	17,5	0.69	38,1	1.50	5/16 – 18	1.1/4	M8 x  1,25	35
*5/8	-10	34,0	1.34	6,73	0.265	19,8	0.78	42,9	1.69	5/16 – 18		M8 x 1,25
3/4	-12	38,1	1.50	6,73	0.265	22,2	0.88	47,6	1.88	3/8 – 16	1.1/4	M10 x 1,5	35
1	-16	44,5	1.75	8,00	0.315	26,2	1.03	52,4	2.06	3/8 – 16	1.1/4	M10 x 1,5	35
1.1/4	-20	50,8	2.00	8,00	0.315	30,2	1.19	58,7	2.31	7/16 – 14	1.1/2	M10 x 1,5	40
1.1/2	-24	60,3	2.38	8,00	0.315	35,7	1.41	69,8	2.75	1/2 – 13	1.1/2	M12 x 1,75	45
1.1/2	-24	60,3	2.38	8,00	0.315	35,7	1.41	69,8	2.75	1/2 – 13	1.1/2	M12 x 1,75	45
2	-32	71,4	2.81	9,53	0.375	42,9	1.69	77,8	3.06	1/2 – 13	1.1/2	M12 x 1,75	45
2.1/2	-40	84,1	3.31	9,53	0.375	50,8	2.00	88,9	3.50	1/2 – 13	1.3/4	M12 x 1,75	45
3	-48	101,6	4.00	9,53	0.375	61,9	2.44	106,4	4.19	5/8 – 11	1.3/4	M16 x 2,0	45
CODE 62
1/2	-08	31,7	1.25	7,75	0.305	18,2	0.72	40,5	1.59	5/16 – 18	1.1/4	M8 x 1,25	35
3/4	-12	41,3	1.63	8,76	0.345	23,8	0.94	50,8	2.00	3/8 – 16	1.1/2	M10 x 1,5	40
1	-16	47,6	1.88	9,53	0.375	27,8	1.09	57,2	2.25	7/16 – 14	1.3/4	M12 x 1,75	45
1.1/4	-20	54,0	2.12	10,29	0.405	31,8	1.25	66,7	2.63	1/2 – 13	1.3/4	M14 x 2,0	45
1.1/2	-24	63,5	2.50	12,57	0.495	36,5	1.44	79,4	3.13	5/8 – 11	2.1/4	M16 x 2,0	60
2	-32	79,4	3.13	12,57	0.495	44,5	1.75	96,8	3.81	3/4 – 10	2.3/4	M20 x 2,5	70
62C
3/4	-12	41,3	1.63	14,20	0.559	23,8	0.94	50,8	2.00	3/8 – 16	1.3/4	M10 x 1,5	45
1	-16	47,6	1.88	14,20	0.599	27,8	1.09	57,2	2.25	7/16 – 14	1.3/4	M12 x 1,75	45
1.1/4	-20	54,0	2.12	14,20	0.599	31,8	1.25	66,7	2.63	1/2 – 13	2	M14 x 2,0	50