NSN 2040-01-172-7143 · NIIN 011727143 · Part number 501-4457345 ITEM 1
Huntington Ingalls Inc Div Newport News Shipbuilding · FSC 2040 — Marine Hardware and Hull Items · FSG 20 — Ship and Marine Equipment · CAGE 43689
Government record, cited
NSN 2040-01-172-7143 — this item is cataloged by the U.S. Government under National Stock Number 2040-01-172-7143. Manufacturer of record part number: 501-4457345 ITEM 1.
Also searched as2040-01-172-7143 ·
2040011727143 ·
NIIN 011727143 ·
01-172-7143 ·
FSC 2040 Marine Hardware and Hull Items · CAGE 43689 · 501-4457345 ITEM 1
Manufacturer of record: Huntington Ingalls Inc Div Newport News Shipbuilding
Identification
NSN: 2040-01-172-7143
NIIN: 011727143
FSC: 2040 — Marine Hardware and Hull Items
FSG: 20 — Ship and Marine Equipment
Primary part number: 501-4457345 ITEM 1
Manufacturer: Huntington Ingalls Inc Div Newport News Shipbuilding
General Description
The Mast Bearing Frame, cataloged under National Stock Number 2040-01-172-7143, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. 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
Parameter
Value
NSN
2040-01-172-7143
Primary Part Number
501-4457345 ITEM 1
Item Name
Mast Bearing Frame
FSC / FSG
2040 / 20 — Marine Hardware and Hull Items
Manufacturer
Huntington Ingalls Inc Div Newport News Shipbuilding
Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
No interchangeability data on file.
Other items in FSC 2040 — Marine Hardware and Hull Items
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2040-00-030-8331
LENS ASSEMBLY,PERIS
2040-00-349-6785
2040-00-349-6785 · Item name not on file
2040-00-361-3924
2040-00-361-3924 · Item name not on file
2040-00-368-5901
2040-00-368-5901 · Item name not on file
2040-00-385-8796
BOX,STUFFING
2040-00-385-9234
2040-00-385-9234 · Item name not on file
2040-00-391-4442
FAIRWATER
2040-00-393-3850
STRAINER,INTAKE
Frequently Asked Questions
What is NSN 2040-01-172-7143?
NSN 2040-01-172-7143 is a Mast Bearing Frame, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
What part numbers are listed for NSN 2040-01-172-7143?
NSN 2040-01-172-7143 has 1 manufacturer part number on file: 501-4457345 ITEM 1 (Huntington Ingalls Inc Div Newport News Shipbuilding).
What are the specifications of 501-4457345 ITEM 1?
Key specifications for 501-4457345 ITEM 1: General Characteristics Item Description: COPPER ALLOY MIL-B-21230 ALLOY 1; 8 MOUNTING HOLES. 1 specification is documented in the U.S. Government catalog.
Is NSN 2040-01-172-7143 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.