PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M404-42Tee,pipe

Associates of American Rr · NSN 4730-00-278-2564 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-278-2564 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-278-2564. Primary manufacturer part number: M404-42.
Features
  • Tee,pipe — FSC 4730
  • Material Document and Classification: ASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Media for Which Designed: STEAM SINGLE RESPONSE
  • Leg Length: 1.937 INCHES NOMINAL ALL ENDS IN
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Nominal Pipe Size Accommodated: 1.250 INCHES ALL ENDS IN
  • Connection Type: THREADED INTERNAL PIPE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Tee,pipe, cataloged under National Stock Number 4730-00-278-2564, 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 7 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: Active.

Technical Specifications
ParameterValue
NSN4730-00-278-2564
Primary Part NumberM404-42
Item NameTee,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAssociates of American Rr
StatusACTIVE
Material Document and ClassificationASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Media for Which DesignedSTEAM SINGLE RESPONSE
Leg Length1.937 INCHES NOMINAL ALL ENDS IN
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Connection StylePLAIN (PIPE) ALL ENDS
Nominal Pipe Size Accommodated1.250 INCHES ALL ENDS IN
Connection TypeTHREADED INTERNAL PIPE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-277-5802 INTERCHANGEABLE
Coupling,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
4730-00-277-5802INTERCHANGEABLE
COUPLING,PIPE
4730-00-278-3093INTERCHANGEABLE
ELBOW,PIPE
45-3875-900-007
4730-00-278-4217INTERCHANGEABLE
ELBOW,PIPE

Frequently Asked Questions

What is NSN 4730-00-278-2564?

NSN 4730-00-278-2564 is a Tee,pipe, manufactured by Associates of American Rr, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-278-2564?

NSN 4730-00-278-2564 has 1 cross-referenced part number: M404-42 (Associates of American Rr).

What NSN replaces 4730-00-278-2564?

There are 3 known substitutes for 4730-00-278-2564: 4730-00-277-5802, 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: Material Document and Classification: ASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Media for Which Designed: STEAM SINGLE RESPONSE; Special Features: THREAD DIRECTONS R-H; Leg Length: 1.937 INCHES NOMINAL ALL ENDS IN. 8 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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