PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3647Adapter,straight,pipe to Boss

Champion Aerospace Llc · NSN 4730-00-476-5398 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-476-5398 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-476-5398. Primary manufacturer part number: 3647.
Features
  • Adapter,straight,pipe to Boss — FSC 4730
  • Connection Style: PLAIN (PIPE) FIRST END
  • Nominal Thread Size: 0.688 INCHES SECOND END IN
  • Nominal Overall Length: 0.844 INCHES IN
  • Material: COPPER ALLOY OVERALL
  • Nominal Thread Size: 0.375 INCHES FIRST END IN
  • Thread Class: 3A SECOND END A
  • Connection Type: THREADED EXTERNAL PIPE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,pipe to Boss, cataloged under National Stock Number 4730-00-476-5398, 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 Champion Aerospace Llc. Government technical data includes 12 verified specifications, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-476-5398
Primary Part Number3647
Item NameAdapter,straight,pipe to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerChampion Aerospace Llc
StatusACTIVE
Connection StylePLAIN (PIPE) FIRST END
Nominal Thread Size0.688 INCHES SECOND END IN
Nominal Overall Length0.844 INCHES IN
MaterialCOPPER ALLOY OVERALL
Nominal Thread Size0.375 INCHES FIRST END IN
Thread Class3A SECOND END A
Connection TypeTHREADED EXTERNAL PIPE FIRST END
Thread Series DesignatorNPT FIRST END
Surface TreatmentCADMIUM OVERALL
Connection TypeTHREADED EXTERNAL BOSS SECOND END
Thread Series DesignatorUNEF SECOND END
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-152-2299 INTERCHANGEABLE
Blade,nutdriver
5420-00-506-4318JE6399-C-001 INTERCHANGEABLE
Valve,inflation-Deflation
Us Army Aviation and Missile Command
5970-00-534-74123647 INTERCHANGEABLE
Insulator,plate
Telemechanics Inc
5950-00-538-3336948733 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2520-00-692-57037706871 INTERCHANGEABLE
Gear Wrecker
U S Army Tank Automotive Command Amsta-Im-Mm
3110-00-736-43227364322 INTERCHANGEABLE
Bearing,ball,linear Motion
Thomson Industries Inc
1005-00-830-16163647 INTERCHANGEABLE
Yoke,handgun
Smith & Wesson Sales Company
5905-00-893-6430246E1021 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Sprague Electric Co World Hqs
5355-01-123-99473647 INTERCHANGEABLE
Dial,scale
Kearflex Engineering Company
5950-01-394-46223647 INTERCHANGEABLE
Coil,radio Frequency
Dyco Manufacturing, Llc
Cross-Reference Index
Part NumberManufacturer
3647 PRIMARY Champion Aerospace Llc (USA)
3647 Ryan Equipment Co Inc (USA)
Related Parts
5120-00-152-2299INTERCHANGEABLE
BLADE,NUTDRIVER
5420-00-506-4318INTERCHANGEABLE
VALVE,INFLATION-DEFLATION
JE6399-C-001
5970-00-534-7412INTERCHANGEABLE
INSULATOR,PLATE
3647
5950-00-538-3336INTERCHANGEABLE
TRANSFORMER,POWER
948733
2520-00-692-5703INTERCHANGEABLE
GEAR WRECKER
7706871
3110-00-736-4322INTERCHANGEABLE
BEARING,BALL,LINEAR MOTION
7364322
1005-00-830-1616INTERCHANGEABLE
YOKE,HANDGUN
3647
5905-00-893-6430INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
246E1021
5355-01-123-9947INTERCHANGEABLE
DIAL,SCALE
3647
5950-01-394-4622INTERCHANGEABLE
COIL,RADIO FREQUENCY
3647
5975-01-518-8281INTERCHANGEABLE
LEG,ELECTRICAL EQUIPMENT
CD-3647
8145-01-617-1717INTERCHANGEABLE
BOX,SHIPPING AND STORAGE
3647

Frequently Asked Questions

What is NSN 4730-00-476-5398?

NSN 4730-00-476-5398 is a Adapter,straight,pipe to Boss, manufactured by Champion Aerospace Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-476-5398?

NSN 4730-00-476-5398 has 2 cross-referenced part numbers: 3647 (Champion Aerospace Llc), 3647 (Ryan Equipment Co Inc).

What NSN replaces 4730-00-476-5398?

There are 12 known substitutes for 4730-00-476-5398: 5120-00-152-2299, 5420-00-506-4318, 5970-00-534-7412 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3647?

Key specifications for 3647: Connection Style: PLAIN (PIPE) FIRST END; Nominal Thread Size: 0.688 INCHES SECOND END IN; Nominal Overall Length: 0.844 INCHES IN; Material: COPPER ALLOY OVERALL. 12 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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