PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FLX5508Hose,nonmetallic

Federal Hose Mfg · NSN 4720-01-340-5851 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-01-340-5851 — this item is cataloged by the U.S. Government under National Stock Number 4720-01-340-5851. Primary manufacturer part number: FLX5508.
Features
  • Hose,nonmetallic — FSC 4720
  • Inside Diameter: 4.000 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: ROUND
  • Inside Surface Condition: SMOOTH
  • Material: RUBBER SILICONE CLASS Q TUBE
  • Temp Rating: -65.0 FAHRENHEIT AND 350.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Layer Composition and Location: 1ST LAYER BRAIDED WIRE AND 2ND LAYER BRAIDED POLYESTER CORD AND OUTER LAYER MOLDED RUBBER
  • Burst Test Pressure: 250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber Silicone Class Q Tube construction
General Description

The Hose,nonmetallic, cataloged under National Stock Number 4720-01-340-5851, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Federal Hose Mfg. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4720-01-340-5851
Primary Part NumberFLX5508
Item NameHose,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerFederal Hose Mfg
StatusACTIVE
Inside Diameter4.000 INCHES NOMINAL IN
Cross-Sectional Shape StyleROUND
Inside Surface ConditionSMOOTH
MaterialRUBBER SILICONE CLASS Q TUBE
Temp Rating-65.0 FAHRENHEIT AND 350.0 FAHRENHEIT SINGLE RESPONSE DEGF
Layer Composition and Location1ST LAYER BRAIDED WIRE AND 2ND LAYER BRAIDED POLYESTER CORD AND OUTER LAYER MOLDED RUBBER
Burst Test Pressure250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
Outside Diameter4.240 INCHES MINIMUM AND 4.278 INCHES MAXIMUM IN
Operating Pressure75.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-003-86485508 INTERCHANGEABLE
Thermostat,flow Control
Gates Corporation
5950-00-064-5460 INTERCHANGEABLE
Transformer,audio Frequency
6105-00-089-682408MT-0102-F INTERCHANGEABLE
Motor-Tachometer Generator
Cda Intercorp Llc
5330-00-106-56945508 INTERCHANGEABLE
Gasket
Linear Dynamics Inc
5133-00-412-1748 INTERCHANGEABLE
Drill,twist
4140-00-456-22685508 INTERCHANGEABLE
Guard,fan Impeller
Purdy William J Co Interfan Div
5330-00-489-33775508 INTERCHANGEABLE
Gasket Set
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
6685-00-514-3286J8048Z-001 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
3110-00-585-9430BACB10A258F INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
3120-00-661-5308MS17795-22 INTERCHANGEABLE
Bearing,sleeve
American Society for Testing and Materials Dba Astm International
Cross-Reference Index
Part NumberManufacturer
5508 Federal Hose Mfg (USA)
FLX5508 PRIMARY Federal Hose Mfg (USA)
Related Parts
6685-00-003-8648INTERCHANGEABLE
THERMOSTAT,FLOW CONTROL
5508
5950-00-064-5460INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
6105-00-089-6824INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
08MT-0102-F
5330-00-106-5694INTERCHANGEABLE
GASKET
5508
5133-00-412-1748INTERCHANGEABLE
DRILL,TWIST
4140-00-456-2268INTERCHANGEABLE
GUARD,FAN IMPELLER
5508
5330-00-489-3377INTERCHANGEABLE
GASKET SET
5508
6685-00-514-3286INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J8048Z-001
3110-00-585-9430INTERCHANGEABLE
BEARING,BALL,ANNULAR
BACB10A258F
3120-00-661-5308INTERCHANGEABLE
BEARING,SLEEVE
MS17795-22
5915-00-891-3301INTERCHANGEABLE
FILTER,BAND PASS-LOW PASS
526-7727-008
5935-00-990-7055INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
52-052-0019

Frequently Asked Questions

What is NSN 4720-01-340-5851?

NSN 4720-01-340-5851 is a Hose,nonmetallic, manufactured by Federal Hose Mfg, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-01-340-5851?

NSN 4720-01-340-5851 has 2 cross-referenced part numbers: 5508 (Federal Hose Mfg), FLX5508 (Federal Hose Mfg).

What NSN replaces 4720-01-340-5851?

There are 12 known substitutes for 4720-01-340-5851: 6685-00-003-8648, 5950-00-064-5460, 6105-00-089-6824 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FLX5508?

Key specifications for FLX5508: Inside Diameter: 4.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: ROUND; Inside Surface Condition: SMOOTH; End Item Identification: GENERAL DYNAMICS CORP F16 AIRCRAFT. 10 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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