PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520021-1Plug,pipe

Sea-Dog Line Div of Sneve-Nysether Inc · NSN 4730-01-457-8670 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-457-8670 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-457-8670. Primary manufacturer part number: 520021-1.
Features
  • Plug,pipe — FSC 4730
  • Material: PLASTIC POLYAMIDE NYLON OVERALL
  • Drive End Style: PIN HOLE
  • 1 verified cross-reference
  • Primary manufacturer: Sea-Dog Line Div of Sneve-Nysether Inc
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Plastic Polyamide Nylon Overall construction
General Description

The Plug,pipe, cataloged under National Stock Number 4730-01-457-8670, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Sea-Dog Line Div of Sneve-Nysether Inc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-457-8670
Primary Part Number520021-1
Item NamePlug,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSea-Dog Line Div of Sneve-Nysether Inc
StatusACTIVE
MaterialPLASTIC POLYAMIDE NYLON OVERALL
Drive End StylePIN HOLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
7025-01-060-70495200-211 INTERCHANGEABLE
Guide,cover,paper
Raytheon Company Div Rmd Strategic
1720-01-468-6893520021-1 INTERCHANGEABLE
Blocking,bar
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
Cross-Reference Index
Part NumberManufacturer
520021-1 PRIMARY Sea-Dog Line Div of Sneve-Nysether Inc (USA)
Related Parts
7025-01-060-7049INTERCHANGEABLE
GUIDE,COVER,PAPER
5200-211
1720-01-468-6893INTERCHANGEABLE
BLOCKING,BAR
520021-1

Frequently Asked Questions

What is NSN 4730-01-457-8670?

NSN 4730-01-457-8670 is a Plug,pipe, manufactured by Sea-Dog Line Div of Sneve-Nysether Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-457-8670?

NSN 4730-01-457-8670 has 1 cross-referenced part number: 520021-1 (Sea-Dog Line Div of Sneve-Nysether Inc).

What NSN replaces 4730-01-457-8670?

There are 2 known substitutes for 4730-01-457-8670: 7025-01-060-7049, 1720-01-468-6893. Verify interchangeability with system specifications before substitution.

What are the specifications of 520021-1?

Key specifications for 520021-1: Special Features: MOLDED-IN RECESS IN THE BASE; Material: PLASTIC POLYAMIDE NYLON OVERALL; Drive End Style: PIN HOLE. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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