PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN816-4-4Adapter,straight,pipe to Tube

Aeronautical Standards Group Dept of Navy and Air Force · NSN 4730-00-542-3284 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-542-3284 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-542-3284. Primary manufacturer part number: AN816-4-4.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Furnished Items and Quantity: 1 PREFORMED PACKING
  • Nominal Thread Size: 0.250 INCHES SECOND END IN
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN
  • Nominal Overall Length: 1.375 INCHES IN
  • Connection Style: FLARED (TUBE) FIRST END
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Thread Class: 3A FIRST END A
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-542-3284, 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 Aeronautical Standards Group Dept of Navy and Air Force. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 17 manufacturers, 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
NSN4730-00-542-3284
Primary Part NumberAN816-4-4
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Furnished Items and Quantity1 PREFORMED PACKING
Nominal Thread Size0.250 INCHES SECOND END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Nominal Overall Length1.375 INCHES IN
Connection StyleFLARED (TUBE) FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Class3A FIRST END A
Connection StylePLAIN (PIPE) SECOND END
MaterialSTEEL OVERALL
Thread Series DesignatorNPTF SECOND END
Seat Angle37.0 DEGREES FIRST END
Specification/standard Data81343-AS4842/1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 88044-AN816 GOVERNMENT STANDARD AND 81349-MIL-F-5509 GOVERNMENT SPECIFICATION
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
Nominal Thread Size0.437 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4730-00-203-3831 INTERCHANGEABLE
Nut,tube Coupling
6140-00-505-1663 INTERCHANGEABLE
Battery,storage
5962-01-325-4824100-001005 INTERCHANGEABLE
Microcircuit,digital
Data General Corporation
Cross-Reference Index
Part NumberManufacturer
AN816-4-4 Aeronautical Standards Group Dept of Navy and Air Force (USA)
AN818-6 Aeronautical Standards Group Dept of Navy and Air Force (USA)
AN816-4-4 Acra Aerospace, Llc (USA)
AN816-4-4 Crown Fitting Co Inc (USA)
AN816-4-4 Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA)
AN816-4-4 Hydro-Fitting Manufacturing Corporation (USA)
AN816-4-4 Collins Engineering Corp (USA)
AN816-4-4 Aerofit, Llc (USA)
SAE-AS4842/1 Sae International Dba Sae International (USA)
4730005423284 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
AN816C4R Aeronautical Standards Group Dept of Navy and Air Force (USA)
AS4842/1 Society of Automotive Engineers Inc (USA)
AN816-4-4 Faber Enterprises, Inc. Div Faber Enterprise Inc (USA)
100001-005 North Wind Test Llc (USA)
AN816-4-4 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
244-9003-600 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
7347982 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
AN816-4-4 Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company (USA)
AS4842/1 Sae International Dba Sae International (USA)
MIL-F-5509 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-203-3831INTERCHANGEABLE
NUT,TUBE COUPLING
6140-00-505-1663INTERCHANGEABLE
BATTERY,STORAGE
5962-01-325-4824INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
100-001005

Frequently Asked Questions

What is NSN 4730-00-542-3284?

NSN 4730-00-542-3284 is a Adapter,straight,pipe to Tube, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-542-3284?

NSN 4730-00-542-3284 has 20 cross-referenced part numbers: AN816-4-4 (Aeronautical Standards Group Dept of Navy and Air Force), AN818-6 (Aeronautical Standards Group Dept of Navy and Air Force), AN816-4-4 (Acra Aerospace, Llc), AN816-4-4 (Crown Fitting Co Inc), AN816-4-4 (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply) and 15 more.

What NSN replaces 4730-00-542-3284?

There are 3 known substitutes for 4730-00-542-3284: 4730-00-203-3831, 6140-00-505-1663, 5962-01-325-4824. Verify interchangeability with system specifications before substitution.

What are the specifications of AN816-4-4?

Key specifications for AN816-4-4: Furnished Items and Quantity: 1 PREFORMED PACKING; Nominal Thread Size: 0.250 INCHES SECOND END IN; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN; Nominal Overall Length: 1.375 INCHES IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-542-3284 still in active supply?

NSN 4730-00-542-3284 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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