NF E48-050-4:2015 Connections for fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 4 : dimensions, design, test methods and requirements for external hex and internal hex port plugs
ISO 19879 Metallic tube connections for fluid power and general use - Test methods for hydraulic fluid power connections*， 2021-02-28 Update
ISO 261 ISO general purpose metric screw threads - General plan
ISO 3601-3 Fluid power systems — O-rings — Part 3: Quality acceptance criteria
ISO 4042 Threaded components — Electroplated coatings*， 2023-12-21 Update
ISO 4759-1 Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - Product grades A, B and C
ISO 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
ISO 5598 Fluid power systems and components — Vocabulary*， 2020-01-06 Update
ISO 6149-1 Connections for hydraulic fluid power and general use — Ports and stud ends with ISO 261 metric threads and O-ring sealing — Part 1: Ports with truncated housing for O-ring seal*， 2022-06-13 Update
ISO 6149-2 Connections for hydraulic fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 2: Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends
ISO 7789 Hydraulic fluid power - Two-, three- and four-port screw-in cartridge valves - Cavities
ISO 9227 Corrosion tests in artificial atmospheres — Salt spray tests — Amendment 1: Footnote of warning*， 2023-08-01 Update
NF E48-050-4:2015 history
2015NF E48-050-4:2015 Connections for fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 4 : dimensions, design, test methods and requirements for external hex and internal hex port plugs
0000 NF E48-050-4:2006
1984NF E27-433:1984 Metric screw hexagon head metal plugs with collar joints for use with O. Rings.
1979NF E27-431:1979 Threaded core plugs and threaded slotted pipe plugs.