PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TRF760APipe,air Conditioning-Heating

Drs Environmental Systems Inc · NSN 4520-00-831-6346 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-831-6346 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-831-6346. Primary manufacturer part number: TRF760A.
Features
  • Pipe,air Conditioning-Heating — FSC 4520
  • Material: STEEL CORROSION RESISTING
  • Cross-Sectional Diameter: 6.000 INCHES NOMINAL IN
  • Material Thickness: 0.0200 INCHES IN
  • Shape: ROUND
  • Construction: SINGLE
  • Length: 18.000 INCHES NOMINAL IN
  • 4 verified cross-references
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Pipe,air Conditioning-Heating, cataloged under National Stock Number 4520-00-831-6346, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Drs Environmental Systems Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4520-00-831-6346
Primary Part NumberTRF760A
Item NamePipe,air Conditioning-Heating
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerDrs Environmental Systems Inc
StatusCANCELLED
MaterialSTEEL CORROSION RESISTING
Cross-Sectional Diameter6.000 INCHES NOMINAL IN
Material Thickness0.0200 INCHES IN
ShapeROUND
ConstructionSINGLE
Length18.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5331-00-250-0224MS29513-020 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
1680-00-345-9438103650A INTERCHANGEABLE
Seal Assembly
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
4810-00-351-657345760 INTERCHANGEABLE
Valve,linear,directional Control
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4320-01-060-9581255947 INTERCHANGEABLE
Parts Kit,rotary Pump
Kalmar AC Inc
4810-01-128-454162714B INTERCHANGEABLE
Valve,globe
Griswold Industries Dba Cla-Val Co
5120-01-528-375500945760000 INTERCHANGEABLE
Pliers,slip Joint
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
Cross-Reference Index
Part NumberManufacturer
TRF760A Drs Environmental Systems Inc (USA)
45-760 Marianna Airmotive Corp (USA)
TRF760A Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
TRF760 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
Related Parts
5331-00-250-0224INTERCHANGEABLE
O-RING
MS29513-020
1680-00-345-9438INTERCHANGEABLE
SEAL ASSEMBLY
103650A
4810-00-351-6573INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
45760
4320-01-060-9581INTERCHANGEABLE
PARTS KIT,ROTARY PUMP
255947
4810-01-128-4541INTERCHANGEABLE
VALVE,GLOBE
62714B
5120-01-528-3755INTERCHANGEABLE
PLIERS,SLIP JOINT
00945760000

Frequently Asked Questions

What is NSN 4520-00-831-6346?

NSN 4520-00-831-6346 is a Pipe,air Conditioning-Heating, manufactured by Drs Environmental Systems Inc, classified under FSC 4520 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4520-00-831-6346?

NSN 4520-00-831-6346 has 4 cross-referenced part numbers: TRF760A (Drs Environmental Systems Inc), 45-760 (Marianna Airmotive Corp), TRF760A (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), TRF760 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems).

What NSN replaces 4520-00-831-6346?

There are 6 known substitutes for 4520-00-831-6346: 5331-00-250-0224, 1680-00-345-9438, 4810-00-351-6573 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TRF760A?

Key specifications for TRF760A: Material: STEEL CORROSION RESISTING; Cross-Sectional Diameter: 6.000 INCHES NOMINAL IN; Material Thickness: 0.0200 INCHES IN; Shape: ROUND. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4520-00-831-6346 still in active supply?

NSN 4520-00-831-6346 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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