PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BA503Plug,pipe

Gast Mfg Corp · NSN 4730-01-140-4868 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-140-4868 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-140-4868. Primary manufacturer part number: BA503.
Features
  • Plug,pipe — FSC 4730
  • Nominal Thread Size: 0.250 INCHES EXTERNAL IN
  • Material: STEEL OVERALL
  • Thread Series Designator: NPT EXTERNAL
  • 2 verified cross-references
  • Primary manufacturer: Gast Mfg Corp
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Plug,pipe, cataloged under National Stock Number 4730-01-140-4868, 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 Gast Mfg Corp. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-140-4868
Primary Part NumberBA503
Item NamePlug,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerGast Mfg Corp
StatusACTIVE
Nominal Thread Size0.250 INCHES EXTERNAL IN
MaterialSTEEL OVERALL
Thread Series DesignatorNPT EXTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4510-00-128-1078 INTERCHANGEABLE
Holder,water Tumbler and Toothbr
Cross-Reference Index
Part NumberManufacturer
BA503 Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies (USA)
BA503 PRIMARY Gast Mfg Corp (USA)
Related Parts
4510-00-128-1078INTERCHANGEABLE
HOLDER,WATER TUMBLER AND TOOTHBR

Frequently Asked Questions

What is NSN 4730-01-140-4868?

NSN 4730-01-140-4868 is a Plug,pipe, manufactured by Gast Mfg Corp, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-140-4868?

NSN 4730-01-140-4868 has 2 cross-referenced part numbers: BA503 (Spx Corporation Dba Dielectric Communications Div Spx Communication Technologies), BA503 (Gast Mfg Corp).

What NSN replaces 4730-01-140-4868?

There is 1 known substitute for 4730-01-140-4868: 4510-00-128-1078. Verify interchangeability with system specifications before substitution.

What are the specifications of BA503?

Key specifications for BA503: Nominal Thread Size: 0.250 INCHES EXTERNAL IN; Material: STEEL OVERALL; Thread Series Designator: NPT EXTERNAL. 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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