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NSN 4730-01-453-0781Government record, cited
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Adapter, Straight, Flange to Pipe4730-01-453-0781

NSN 4730-01-453-0781 · NIIN 014530781 · Part number 515-6404685 AY95
Naval Sea Systems Command · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 53711
Government record, cited
NSN 4730-01-453-0781 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-453-0781. Manufacturer of record part number: 515-6404685 AY95.
Also searched as  4730-01-453-0781 · 4730014530781 · NIIN 014530781 · 01-453-0781 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 53711 · 515-6404685 AY95 · 211033889 · 6404685 · 211033889
Nearby stock numbers  ·
L 2.400 INCHES IN ⌀2.500 INCHES SECOND END IN HOSE FITTING
4730-01-453-0781 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Adapter,straight,flange to Pipe — FSC 4730
  • Flange Shape: ROUND WITH HOLES SECOND END
  • Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN
  • Flange Face Design: PLAIN SECOND END
  • Connection Style: SOCKET (PIPE) FIRST END
  • Bolt Circle Nominal Diameter: 2.500 INCHES SECOND END IN
  • Nominal Overall Length: 2.400 INCHES IN
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
Identification
  • NSN: 4730-01-453-0781
  • NIIN: 014530781
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 515-6404685 AY95
  • Manufacturer: Naval Sea Systems Command
General Description

The Adapter,straight,flange to Pipe, cataloged under National Stock Number 4730-01-453-0781, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-453-0781
Primary Part Number515-6404685 AY95
Item NameAdapter,straight,flange to Pipe
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerNaval Sea Systems Command
StatusACTIVE
Flange ShapeROUND WITH HOLES SECOND END
Nominal Pipe Size Accommodated0.500 INCHES FIRST END IN
Flange Face DesignPLAIN SECOND END
Connection StyleSOCKET (PIPE) FIRST END
Bolt Circle Nominal Diameter2.500 INCHES SECOND END IN
Nominal Overall Length2.400 INCHES IN
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Connection TypeFLANGE SECOND END
Material Document and ClassificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE BODY
Bolt Hole Nominal Diameter0.310 INCHES SECOND END IN
Nominal Outside Diameter3.250 INCHES SECOND END IN
Bolt Hole Quantity3 SECOND END
MaterialSTEEL COMP 316L BODY
Nominal Thickness0.125 INCHES SECOND END IN
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
515-6404685 AY95 PRIMARY Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
211033889 5/2 Secondary reference
U.S. Government activity
6404685 D/9 Drawing number reference only
Naval Sea Systems Command
211033889 C/1 Advisory reference — outside the item-of-supply concept
Naval Sea Systems Command
No interchangeability data on file.
Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0009
COUPLING,TUBE
Related Parts in Pipe, Tubing, Hose, and Fittings
4730-00-000-1895
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
D10008-08
4730-00-001-0009
COUPLING,TUBE
H10008-12

Frequently Asked Questions

What is NSN 4730-01-453-0781?

NSN 4730-01-453-0781 is a Adapter,straight,flange to Pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-453-0781?

NSN 4730-01-453-0781 has 1 manufacturer part number on file: 515-6404685 AY95 (Naval Sea Systems Command).

What are the specifications of 515-6404685 AY95?

Key specifications for 515-6404685 AY95: Flange Shape: ROUND WITH HOLES SECOND END; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Flange Face Design: PLAIN SECOND END; Connection Style: SOCKET (PIPE) FIRST END. 14 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-453-0781 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.

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