PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21604Line Assembly,drain

Alamo Aircraft, Ltd. · NSN 2835-00-659-0544 · FSC 2835 · No Item Name Available
Verified by PartsTable
NSN 2835-00-659-0544 — this item is cataloged by the U.S. Government under National Stock Number 2835-00-659-0544. Primary manufacturer part number: 21604.
Features
  • Line Assembly,drain — FSC 2835
  • General Characteristics Item Description: MAJOR COMPONENTS: A -1 TUBE 0.250 IN. NOM OD PER MIL-T-8606 TYPE I,COND 321,2 NUTS,2 SLEEVES IN
  • 2 verified cross-references
  • Primary manufacturer: Alamo Aircraft, Ltd.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Line Assembly,drain, cataloged under National Stock Number 2835-00-659-0544, is classified within Federal Supply Class 2835 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Alamo Aircraft, Ltd.. Government technical data includes 1 verified specification, 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2835-00-659-0544
Primary Part Number21604
Item NameLine Assembly,drain
FSC / FSG2835 / 28 — No Item Name Available
ManufacturerAlamo Aircraft, Ltd.
StatusACTIVE
General Characteristics Item DescriptionMAJOR COMPONENTS: A -1 TUBE 0.250 IN. NOM OD PER MIL-T-8606 TYPE I,COND 321,2 NUTS,2 SLEEVES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4330-00-336-556799133014 INTERCHANGEABLE
Plate,housing
Alfa Laval Inc
6340-00-717-233521604 INTERCHANGEABLE
Gear Assy
Safe Flight Instrument, Llc
5330-01-437-8806 INTERCHANGEABLE
Packing with Retainer
5365-01-508-380021604 INTERCHANGEABLE
Spacer,sleeve
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
21604 Rtx Corporation Div Pratt & Whitney (USA)
21604 PRIMARY Alamo Aircraft, Ltd. (USA)
Related Parts
4330-00-336-5567INTERCHANGEABLE
PLATE,HOUSING
99133014
6340-00-717-2335INTERCHANGEABLE
GEAR ASSY
21604
5330-01-437-8806INTERCHANGEABLE
PACKING WITH RETAINER
5365-01-508-3800INTERCHANGEABLE
SPACER,SLEEVE
21604

Frequently Asked Questions

What is NSN 2835-00-659-0544?

NSN 2835-00-659-0544 is a Line Assembly,drain, manufactured by Alamo Aircraft, Ltd., classified under FSC 2835 (No Item Name Available). Status: active.

What are the part numbers for NSN 2835-00-659-0544?

NSN 2835-00-659-0544 has 2 cross-referenced part numbers: 21604 (Rtx Corporation Div Pratt & Whitney), 21604 (Alamo Aircraft, Ltd.).

What NSN replaces 2835-00-659-0544?

There are 4 known substitutes for 2835-00-659-0544: 4330-00-336-5567, 6340-00-717-2335, 5330-01-437-8806 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21604?

Key specifications for 21604: General Characteristics Item Description: MAJOR COMPONENTS: A -1 TUBE 0.250 IN. NOM OD PER MIL-T-8606 TYPE I,COND 321,2 NUTS,2 SLEEVES IN. 1 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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