O-Ring - Croatia (HR)
Federal Supply Class (FSC): 5331
NATO Supply Classification Class (NSC): 5331
Federal Supply Group (FSG): 53 Hardware and Abrasives
NATO Supply Classification Group (NSG): 53 Hardware and Abrasives
Items Managed by Croatia (HR) - NCB is 53
NSN Format for O-Ring
Codified by Croatia
| 53 | 31 | 53 | XXX | XXXX | |||
|---|---|---|---|---|---|---|---|
| Group FSG | Class | NCB | Identifier | ||||
| FSC Federal Supply Class | NIIN | ||||||
| NSN | |||||||
NATO Supply Class 5331 refers to O-Rings, which are a type of sealing device used in various industries and applications. O-Rings are circular elastomeric rings with a round cross-section, typically made from materials such as rubber or silicone. They are designed to create a tight seal between two mating surfaces, preventing leakage of fluids or gases.
In the NATO Supply Group 53, which encompasses Hardware And Abrasives, O-Rings fall under the specific class of 5331. This class is dedicated to the categorization and identification of O-Rings within the NATO supply system.
O-Rings are widely used in a variety of industries, including automotive, aerospace, plumbing, and manufacturing. They are known for their versatility, durability, and ability to withstand high pressures and temperatures. O-Rings are commonly used in hydraulic and pneumatic systems, engines, pumps, valves, and other mechanical applications.
The NATO Supply Class 5331 for O-Rings ensures standardized identification and classification of these essential sealing devices within the NATO supply chain. This classification system helps streamline procurement processes and ensures compatibility and interchangeability of O-Rings across different NATO member countries.
If you need further information or assistance regarding O-Rings or any other topic, feel free to ask!

Excludes Packing and Gasket Material (FSC 5330).
Frequently Asked Questions(FAQ) for Federal Supply Class 5331
- What is Federal Supply Class 5331?
- FSC 5331 is the Federal Supply Class (formally known as NATO Supply Classification Class NSC 5331) in the USA for supply items codified in the category of O-Ring.
- What is NATO Supply Classification Class 5331?
- NSC 5331 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 5331 in the USA) for supply items codified in the category of O-Ring.
- Which Federal Supply Group is FSC 5331 in?
- FSC 5331 is in Federal Supply Group (FSG) 53 which contains Hardware and Abrasives.
- Which NATO Supply Classification Group is NSC 5331 in?
- NSC 5331 is in NATO Supply Classification Group (NSG) 53 which contains Hardware and Abrasives.
Supply Items Included in Federal Supply Class 5331
- What is an O-Ring? 22 Items
- An O-Ring is a nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see PACKING,PREFORMED. For noncircular items with a round cross-section, see SEAL,NONMETALLIC ROUND SECTION and RUBBER,ROUND SECTION.
Stock Items From Supply Class 5331 Page 1 of 1
- 530000810
- 05-02-05-00
- RNCC: 3 | RNVC: 2
- 530000808
- 05-10-04
- RNCC: 3 | RNVC: 2
- 530000955
- 04-05-04
- RNCC: 3 | RNVC: 2
- 530000639
- 05-02-04-00
- RNCC: 3 | RNVC: 2
- 530000599
- 05-08-04
- RNCC: 3 | RNVC: 2
- 530000811
- OR-00-12-020
- RNCC: 3 | RNVC: 2
- 530000937
- 05-08-03-03
- RNCC: 3 | RNVC: 2
- 530000969
- 05-20-01
- RNCC: 3 | RNVC: 2
- 530000807
- 05-19-01
- RNCC: 3 | RNVC: 2
- 530000813
- OR-00-25-025
- RNCC: 3 | RNVC: 2
- 530000383
- OR-00-00-00
- RNCC: 3 | RNVC: 2
- 530000623
- 05-22-06
- RNCC: 3 | RNVC: 2
- 530000418
- OR-00-32-035
- RNCC: 3 | RNVC: 2
- 530000861
- OR-00-19-025
- RNCC: 3 | RNVC: 2
- 530000737
- 27-04-10-04
- RNCC: 3 | RNVC: 2
- 530000723
- 05-11-05
- RNCC: 3 | RNVC: 2
- 530000812
- OR-00-19-015
- RNCC: 3 | RNVC: 2
- 530000815
- OR-00-38-025
- RNCC: 3 | RNVC: 2
- 530000967
- 05-08-03-06
- RNCC: 3 | RNVC: 2
- 530000803
- 05-01-05-01
- RNCC: 3 | RNVC: 2
- 530000869
- 05-11-01-01
- RNCC: 3 | RNVC: 2
- 530001028
- OR-00-09-015
- RNCC: 3 | RNVC: 2
- 530000957
- 04-05-08
- RNCC: 3 | RNVC: 2