PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M404-42Coupling,pipe

Associates of American Rr · NSN 4730-00-277-5802 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-277-5802 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-277-5802. Primary manufacturer part number: M404-42.
Features
  • Coupling,pipe — FSC 4730
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Nominal Overall Length: 3.625 INCHES IN
  • Nominal Thread Size: 2.000 INCHES ALL ENDS IN
  • Style Designator: THREADED INTERNAL
  • Surface Treatment: ZINC OVERALL
  • Media for Which Designed: STEAM SINGLE RESPONSE
  • Thread Series Designator: NPT ALL ENDS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Iron Overall construction
General Description

The Coupling,pipe, cataloged under National Stock Number 4730-00-277-5802, 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 Associates of American Rr. Government technical data includes 10 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-277-5802
Primary Part NumberM404-42
Item NameCoupling,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAssociates of American Rr
StatusCANCELLED
Connection StylePLAIN (PIPE) ALL ENDS
Nominal Overall Length3.625 INCHES IN
Nominal Thread Size2.000 INCHES ALL ENDS IN
Style DesignatorTHREADED INTERNAL
Surface TreatmentZINC OVERALL
Media for Which DesignedSTEAM SINGLE RESPONSE
Thread Series DesignatorNPT ALL ENDS
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
MaterialIRON OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4730-00-278-2564 INTERCHANGEABLE
Tee,pipe
4730-00-278-309345-3875-900-007 INTERCHANGEABLE
Elbow,pipe
Chief of Engineers Dept of Army
4730-00-278-4217 INTERCHANGEABLE
Elbow,pipe
Cross-Reference Index
Part NumberManufacturer
M404-42 Associates of American Rr (USA)
Related Parts
4730-00-278-2564INTERCHANGEABLE
TEE,PIPE
4730-00-278-3093INTERCHANGEABLE
ELBOW,PIPE
45-3875-900-007
4730-00-278-4217INTERCHANGEABLE
ELBOW,PIPE

Frequently Asked Questions

What is NSN 4730-00-277-5802?

NSN 4730-00-277-5802 is a Coupling,pipe, manufactured by Associates of American Rr, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-277-5802?

NSN 4730-00-277-5802 has 1 cross-referenced part number: M404-42 (Associates of American Rr).

What NSN replaces 4730-00-277-5802?

There are 3 known substitutes for 4730-00-277-5802: 4730-00-278-2564, 4730-00-278-3093, 4730-00-278-4217. Verify interchangeability with system specifications before substitution.

What are the specifications of M404-42?

Key specifications for M404-42: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 3.625 INCHES IN; Nominal Thread Size: 2.000 INCHES ALL ENDS IN; Style Designator: THREADED INTERNAL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-277-5802 still in active supply?

NSN 4730-00-277-5802 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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