PartsTable TECHNICAL DATA SHEET
NSN 4220-01-540-8548Government record, cited

Mouthpiece Protecto4220-01-540-8548

NSN 4220-01-540-8548 · NIIN 015408548 · Part number RP45FY
Underwater Diving Inc Dba Trident · FSC 4220 — Marine Lifesaving and Diving Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 0KFE6
Government record, cited
NSN 4220-01-540-8548 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-540-8548. Manufacturer of record part number: RP45FY.
Also searched as  4220-01-540-8548 · 4220015408548 · NIIN 015408548 · 01-540-8548 · FSC 4220 Marine Lifesaving and Diving Equipment · CAGE 0KFE6 · RP45FY
Nearby stock numbers  ·
Features
  • Mouthpiece Protecto — FSC 4220
  • Color: YELLOW
  • 1 manufacturer part number on file
  • Manufacturer of record: Underwater Diving Inc Dba Trident
Identification
  • NSN: 4220-01-540-8548
  • NIIN: 015408548
  • FSC: 4220 — Marine Lifesaving and Diving Equipment
  • FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
  • Primary part number: RP45FY
  • Manufacturer: Underwater Diving Inc Dba Trident
General Description

The Mouthpiece Protecto, cataloged under National Stock Number 4220-01-540-8548, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Underwater Diving Inc Dba Trident. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4220-01-540-8548
Primary Part NumberRP45FY
Item NameMouthpiece Protecto
FSC / FSG4220 / 42 — Marine Lifesaving and Diving Equipment
ManufacturerUnderwater Diving Inc Dba Trident
StatusACTIVE
ColorYELLOW
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
RP45FY PRIMARY Underwater Diving Inc Dba Trident (USA)
No interchangeability data on file.
Other items in FSC 4220 — Marine Lifesaving and Diving Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4220-00-004-8880
4220-00-004-8880 · Item name not on file
4220-00-009-2854
DIVING EQUIPMENT SET
4220-00-012-3571
INFLATION ASSEMBLY,LIFE JACKET
4220-00-014-0183
4220-00-014-0183 · Item name not on file
4220-00-014-2097
CARTRIDGE,COMPRESSED GAS
4220-00-021-4979
COVER,RAFT
4220-00-021-9688
LANYARD ASSEMBLY
4220-00-022-1014
4220-00-022-1014 · Item name not on file

Frequently Asked Questions

What is NSN 4220-01-540-8548?

NSN 4220-01-540-8548 is a Mouthpiece Protecto, manufactured by Underwater Diving Inc Dba Trident, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.

What part numbers are listed for NSN 4220-01-540-8548?

NSN 4220-01-540-8548 has 1 manufacturer part number on file: RP45FY (Underwater Diving Inc Dba Trident).

What are the specifications of RP45FY?

Key specifications for RP45FY: Color: YELLOW; Special Features: PRECISION FITTING OCTO HOLDER AND MOUTHPIECE PROTECTOR; Part Name Assigned by Controlling Agency: OCTOPUS HOLDER. 1 specification is documented in the U.S. Government catalog.

Is NSN 4220-01-540-8548 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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