Identification sheet

Published working pressures, with the conditions they apply under

Every size in the database that carries a working pressure two independent publishers agree on, printed next to the exact conditions the figure is for. Five of the ten standards appear nowhere on this sheet, because no two sources rate them.

61 rows5 sectionsPortrait

Published working pressures, with the conditions they apply under

61 rows. Print portrait.

Published working pressures, with the conditions they apply under. Every size in the database that carries a working pressure two independent publishers agree on, printed next to the exact conditions the figure is for. Five of the ten standards appear nowhere on this sheet, because no two sources rate them.
Size	Thread	Tube or trade size	Working pressure
JIC 37 degree flare (SAE J514 / ISO 8434-2)Steel fitting, rigid 37 degree flare end, at a 4 to 1 design factor against minimum burst per SAE J514. Adjustable and swivel ends of the same size are rated lower. A fitting with two different ends takes the lower of the two ratings. Brass, stainless and any manufacturer's own uprated part carry different figures - read them from that maker's catalogue.
-02 JIC	5/16-24 UNF	1/8 in tube	5,000 psi (345 bar)
-03 JIC	3/8-24 UNF	3/16 in tube	5,000 psi (345 bar)
-04 JIC	7/16-20 UNF	1/4 in tube	5,000 psi (345 bar)
-05 JIC	1/2-20 UNF	5/16 in tube	5,000 psi (345 bar)
-06 JIC	9/16-18 UNF	3/8 in tube	5,000 psi (345 bar)
-08 JIC	3/4-16 UNF	1/2 in tube	4,500 psi (310 bar)
-10 JIC	7/8-14 UNF	5/8 in tube	3,500 psi (241 bar)
-12 JIC	1 1/16-12 UN	3/4 in tube	3,500 psi (241 bar)
-14 JIC	1 3/16-12 UN	7/8 in tube	3,000 psi (207 bar)
-16 JIC	1 5/16-12 UN	1 in tube	3,000 psi (207 bar)
-20 JIC	1 5/8-12 UN	1 1/4 in tube	2,500 psi (172 bar)
-24 JIC	1 7/8-12 UN	1 1/2 in tube	2,000 psi (138 bar)
-32 JIC	2 1/2-12 UN	2 in tube	1,500 psi (103 bar)
SAE straight thread O-ring boss, ORB (SAE J1926-1 / ISO 11926-1)Steel stud in a steel port, at a 4 to 1 design factor against minimum burst per SAE J514. The higher figure is a straight (non-adjustable) stud, the lower an adjustable stud with lock nut and washer. Both publishers give the same pair. Brass, stainless and uprated proprietary parts differ - read the maker's catalogue.
-02 SAE ORB	5/16-24 UNF	1/8 in nominal port	5,000 psi (345 bar)
-03 SAE ORB	3/8-24 UNF	3/16 in nominal port	5,000 psi (345 bar)
-04 SAE ORB	7/16-20 UNF	1/4 in nominal port	4,500 to 5,000 psi (310 to 345 bar)
-05 SAE ORB	1/2-20 UNF	5/16 in nominal port	4,000 to 5,000 psi (276 to 345 bar)
-06 SAE ORB	9/16-18 UNF	3/8 in nominal port	4,000 to 5,000 psi (276 to 345 bar)
-08 SAE ORB	3/4-16 UNF	1/2 in nominal port	4,000 to 4,500 psi (276 to 310 bar)
-10 SAE ORB	7/8-14 UNF	5/8 in nominal port	3,000 to 3,500 psi (207 to 241 bar)
-12 SAE ORB	1 1/16-12 UN	3/4 in nominal port	3,000 to 3,500 psi (207 to 241 bar)
-14 SAE ORB	1 3/16-12 UN	7/8 in nominal port	2,500 to 3,000 psi (172 to 207 bar)
-16 SAE ORB	1 5/16-12 UN	1 in nominal port	2,500 to 3,000 psi (172 to 207 bar)
-20 SAE ORB	1 5/8-12 UN	1 1/4 in nominal port	2,000 to 2,500 psi (138 to 172 bar)
-24 SAE ORB	1 7/8-12 UN	1 1/2 in nominal port	1,500 to 2,000 psi (103 to 138 bar)
-32 SAE ORB	2 1/2-12 UN	2 in nominal port	1,125 to 1,500 psi (78 to 103 bar)
O-ring face seal, ORFS (SAE J1453 / ISO 8434-3)Steel fitting at a 4 to 1 design factor against minimum burst per SAE J1453. The higher figure is a straight (non-adjustable) port stud, the lower an adjustable stud. Both publishers give the same pair. Proof pressure is twice the working figure and minimum burst four times it, per the same table.
-04 ORFS	9/16-18 UNF	1/4 in tube	6,000 psi (414 bar)
-06 ORFS	11/16-16 UNF	3/8 in tube	6,000 psi (414 bar)
-08 ORFS	13/16-16 UNF	1/2 in tube	6,000 psi (414 bar)
-10 ORFS	1-14 UNF	5/8 in tube	6,000 psi (414 bar)
-12 ORFS	1 3/16-12 UN	3/4 in tube	6,000 psi (414 bar)
-16 ORFS	1 7/16-12 UN	1 in tube	5,000 to 6,000 psi (345 to 414 bar)
-20 ORFS	1 11/16-12 UN	1 1/4 in tube	4,000 psi (276 bar)
-24 ORFS	2-12 UN	1 1/2 in tube	3,000 to 4,000 psi (207 to 276 bar)
American National Pipe Taper, NPT (ASME B1.20.1) and NPTF dryseal (ASME B1.20.3)Steel fitting with an NPTF pipe end, at a 4 to 1 design factor against minimum burst per SAE J514, assembled with a thread sealant. A fitting with a pipe end and a straight-thread end takes the lower of the two ratings, and on most adapters the pipe end is the lower one.
1/8 NPT	1/8-27 NPT	1/8 in trade size	5,000 psi (345 bar)
1/2 NPT	1/2-14 NPT	1/2 in trade size	3,000 psi (207 bar)
3/4 NPT	3/4-14 NPT	3/4 in trade size	2,500 psi (172 bar)
1 NPT	1-11 1/2 NPT	1 in trade size	2,000 psi (138 bar)
1 1/4 NPT	1 1/4-11 1/2 NPT	1 1/4 in trade size	1,150 psi (79 bar)
1 1/2 NPT	1 1/2-11 1/2 NPT	1 1/2 in trade size	1,000 psi (69 bar)
2 NPT	2-11 1/2 NPT	2 in trade size	1,000 psi (69 bar)
Metric 24 degree cone, DIN 2353 / ISO 8434-1, light (L) and heavy (S) seriesCutting-ring connection in carbon or stainless steel under static working conditions, at a safety factor of 4, per the DIN 2353 / PN-ISO 8434-1 table. The lower figure is the ISO 8434-1 cutting-ring value; the upper is the higher of the two published manufacturer figures for the size. Fittings that seal metal to metal, and banjo fittings, run at a safety factor of only 1.5 to 2.5 and are rated lower. Above 100 degrees C the figure may need reducing.
6L (M12 x 1.5)	M12 x 1.5	6 mm tube, light series	250 to 315 bar (3,626 to 4,569 psi)
8L (M14 x 1.5)	M14 x 1.5	8 mm tube, light series	250 to 315 bar (3,626 to 4,569 psi)
10L (M16 x 1.5)	M16 x 1.5	10 mm tube, light series	250 to 315 bar (3,626 to 4,569 psi)
12L (M18 x 1.5)	M18 x 1.5	12 mm tube, light series	250 to 315 bar (3,626 to 4,569 psi)
15L (M22 x 1.5)	M22 x 1.5	15 mm tube, light series	250 to 315 bar (3,626 to 4,569 psi)
18L (M26 x 1.5)	M26 x 1.5	18 mm tube, light series	160 to 315 bar (2,321 to 4,569 psi)
22L (M30 x 2.0)	M30 x 2.0	22 mm tube, light series	160 bar (2,321 psi)
28L (M36 x 2.0)	M36 x 2.0	28 mm tube, light series	100 to 160 bar (1,450 to 2,321 psi)
35L (M45 x 2.0)	M45 x 2.0	35 mm tube, light series	100 to 160 bar (1,450 to 2,321 psi)
42L (M52 x 2.0)	M52 x 2.0	42 mm tube, light series	100 to 160 bar (1,450 to 2,321 psi)
6S (M14 x 1.5)	M14 x 1.5	6 mm tube, heavy series	630 bar (9,137 psi)
8S (M16 x 1.5)	M16 x 1.5	8 mm tube, heavy series	630 bar (9,137 psi)
10S (M18 x 1.5)	M18 x 1.5	10 mm tube, heavy series	630 bar (9,137 psi)
12S (M20 x 1.5)	M20 x 1.5	12 mm tube, heavy series	630 bar (9,137 psi)
14S (M22 x 1.5)	M22 x 1.5	14 mm tube, heavy series	630 bar (9,137 psi)
16S (M24 x 1.5)	M24 x 1.5	16 mm tube, heavy series	400 bar (5,802 psi)
20S (M30 x 2.0)	M30 x 2.0	20 mm tube, heavy series	400 bar (5,802 psi)
25S (M36 x 2.0)	M36 x 2.0	25 mm tube, heavy series	400 bar (5,802 psi)
30S (M42 x 2.0)	M42 x 2.0	30 mm tube, heavy series	250 to 400 bar (3,626 to 5,802 psi)
38S (M52 x 2.0)	M52 x 2.0	38 mm tube, heavy series	250 to 315 bar (3,626 to 4,569 psi)

Sources: ANSI/ASME B1.20.1, Pipe Threads, General Purpose (Inch), Table 1 (ASME); Hydraulic coupling identification chart E2/50101 (Gates); Fluid Ports and Connectors Identification Guide (McGill Hose & Coupling); Master catalogue: conformance, working pressure and torque tables (Tompkins Industries); Catalogue page 4: SAE J514 working pressure ratings, and SAE J1453 working, proof and minimum burst pressures for face seal fittings (Brennan Industries); Thread and connector identification guide (Gerrard Hydraulics (RYCO)); How to identify 24 degree tube fittings, component compatibility chart (Adaptall); Thread identification: BSP, JIC, ORFS and metric tables (Apex Fluid Power); Thread identification guide, O-ring face seal, with adapter sizing chart (Central Hydraulic Supply); High pressure pipe connectors: DIN 2353 working pressure table (Tubes International); Boss, face and flange O-rings: AS568 900 series and zero series (Global O-Ring and Seal); JIC fitting thread sizes (GageRef); ORFS fitting thread sizes (GageRef); NPT thread chart (AmesWeb); NPT thread charts (Machining Doctor).

Reference aid for identification and ordering, not a substitute for the manufacturer specification. Pressure ratings apply only under the conditions printed beside them. Verify against the maker's catalogue before a system is charged.

Free to read

Every figure on this sheet, on its own page

Nothing on this sheet is behind the paywall as information. Each standard below has a free index carrying the same table, and each size has its own page with the measured span, the seat, what it mates with and the sources behind every figure.

JIC 37 degree flare13 sizes, freeSAE J514, ISO 8434-2 SAE O-ring boss13 sizes, freeSAE J1926-1, ISO 11926-1 ORFS (O-ring face seal)8 sizes, freeSAE J1453, ISO 8434-3 NPT / NPTF10 sizes, freeASME B1.20.1, ASME B1.20.3 Metric DIN 24 degree20 sizes, freeISO 8434-1, DIN 2353

More sheets

Other identification charts

SAE inch fittings: JIC 37, ORB, ORFS and SAE 4542 rows Pipe threads: NPT, BSPP and BSPT32 rows Metric DIN 2353 / ISO 8434-1, light and heavy series20 rows Japanese fittings: JIS 30 degree and Komatsu 30 degree16 rows Seat and thread identification: all ten standards10 rows

Where these figures come from

Every value on this page was checked against 15 independent published sources:

ANSI/ASME B1.20.1, Pipe Threads, General Purpose (Inch), Table 1 - ASME, ANSI/ASME B1.20.1-1983 (standard, read directly, read 2026-08-27)
Hydraulic coupling identification chart E2/50101 - Gates, Gates Europe, 2004 (manufacturer, read 2026-08-27)
Fluid Ports and Connectors Identification Guide - McGill Hose & Coupling, SAE J512, J514, J1453, J1926-1, ISO 228, ISO 7, DIN 2353, JIS (distributor, read 2026-08-27)
Master catalogue: conformance, working pressure and torque tables - Tompkins Industries, SAE J514, SAE J1453, SAE J1926-1, SAE J1926-3, ISO 11926-1 (manufacturer, read 2026-08-27)
Catalogue page 4: SAE J514 working pressure ratings, and SAE J1453 working, proof and minimum burst pressures for face seal fittings - Brennan Industries, SAE J514, SAE J1453 (manufacturer, read 2026-08-27)
Thread and connector identification guide - Gerrard Hydraulics (RYCO), AS 1722.1, AS 1722.2, BS 21, ISO 7, ISO 228, ANSI/ASME B1.20.1 (distributor, read 2026-08-27)
How to identify 24 degree tube fittings, component compatibility chart - Adaptall, DIN 2353, ISO 8434-1 (manufacturer, read 2026-08-27)
Thread identification: BSP, JIC, ORFS and metric tables - Apex Fluid Power, ISO 12151-2, ISO 8434-1 (distributor, read 2026-08-27)
Thread identification guide, O-ring face seal, with adapter sizing chart - Central Hydraulic Supply, SAE J1453 (distributor, read 2026-08-27)
High pressure pipe connectors: DIN 2353 working pressure table - Tubes International, DIN 2353, PN-ISO 8434-1 (distributor, read 2026-08-27)
Boss, face and flange O-rings: AS568 900 series and zero series - Global O-Ring and Seal, AS568 (manufacturer, read 2026-08-27)
JIC fitting thread sizes - GageRef, SAE J514 (reference table, read 2026-08-27)
ORFS fitting thread sizes - GageRef, SAE J1453 (reference table, read 2026-08-27)
NPT thread chart - AmesWeb, ASME B1.20.1 (reference table, read 2026-08-27)
NPT thread charts - Machining Doctor, ASME B1.20.1 (reference table, read 2026-08-27)