NSN 4730-01-731-0800 · NIIN 017310800 · Part number 8B-7557
Caterpillar Inc Div Caterpillar Defense · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 11083
Government record, cited
NSN 4730-01-731-0800 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-731-0800. Manufacturer of record part number: 8B-7557.
Also searched as4730-01-731-0800 ·
4730017310800 ·
NIIN 017310800 ·
01-731-0800 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 11083 · 8B-7557
Nearby stock numbers← 4730-01-731-0660 Elbow, Tube to Boss
·
4730-01-731-0838 Cap, Retention, Pressure Plug →
4730-01-731-0800 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Reducer,pipe — FSC 4730
Nominal Pipe Size Accommodated: 0.375 INCHES 2ND END IN
Nominal Pipe Size Accommodated: 0.625 INCHES 1ST END IN
Connection Style: PLAIN (PIPE) ALL ENDS
Connection Type: THREADED EXTERNAL PIPE 2ND END
Connection Type: THREADED INTERNAL PIPE 1ST END
Nondefinitive Spec/std Data: 3.1TONS CAPACITY
Thread Quantity Per Inch: 16 2ND END
Identification
NSN: 4730-01-731-0800
NIIN: 017310800
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: 8B-7557
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Reducer,pipe, cataloged under National Stock Number 4730-01-731-0800, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 8 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. Current acquisition status: Active.
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
4730-00-001-0008
COUPLING,TUBE
Frequently Asked Questions
What is NSN 4730-01-731-0800?
NSN 4730-01-731-0800 is a Reducer,pipe, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What part numbers are listed for NSN 4730-01-731-0800?
NSN 4730-01-731-0800 has 1 manufacturer part number on file: 8B-7557 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 8B-7557?
Key specifications for 8B-7557: Nominal Pipe Size Accommodated: 0.375 INCHES 2ND END IN; Nominal Pipe Size Accommodated: 0.625 INCHES 1ST END IN; Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE 2ND END. 8 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-731-0800 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.