PartsTable TECHNICAL DATA SHEET

NSN 4730-01-166-7057Government record, cited

Adapter Assembly4730-01-166-7057

NSN 4730-01-166-7057 · NIIN 011667057 · Part number X2721-2

Derbyshire Machine & Tool Co · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 71905

Government record, cited

NSN 4730-01-166-7057 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-166-7057. Manufacturer of record part number: X2721-2.

Also searched as 4730-01-166-7057 · 4730011667057 · NIIN 011667057 · 01-166-7057 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 71905 · X2721-2 · 2621-021-01ASSY45MOD U · 516-4682233 ITEM F25

Nearby stock numbers ← 4730-01-166-7045 Test Fitting · 4730-01-166-7060 Restrictor Unit, Fluid Flow →

4730-01-166-7057 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Adapter Assembly — FSC 4730
1 manufacturer part number on file
Manufacturer of record: Derbyshire Machine & Tool Co

Identification

NSN: 4730-01-166-7057
NIIN: 011667057
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: X2721-2
Manufacturer: Derbyshire Machine & Tool Co

General Description

The Adapter Assembly, cataloged under National Stock Number 4730-01-166-7057, 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 Derbyshire Machine & Tool Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Adapter Assembly
FSC / FSG	4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47)
Manufacturers	Derbyshire Machine & Tool Co (CAGE 71905)

Technical Specifications

Parameter	Value
NSN	4730-01-166-7057
Primary Part Number	X2721-2
Item Name	Adapter Assembly
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Manufacturer	Derbyshire Machine & Tool Co
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
X2721-2	Derbyshire Machine & Tool Co (USA)

Reference documents

Reference	Meaning
2621-021-01ASSY45MOD U	5/2 Secondary reference U.S. Government activity
516-4682233 ITEM F25	3/2 Design control — primary reference U.S. Government activity

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

4730-00-001-0008

COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-166-7057?

NSN 4730-01-166-7057 is a Adapter Assembly, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-166-7057?

NSN 4730-01-166-7057 has 1 manufacturer part number on file: X2721-2 (Derbyshire Machine & Tool Co).

Is NSN 4730-01-166-7057 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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