PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3901-87Hose Assembly,nonmetallic

Aqualung Usa, Inc · NSN 4720-00-194-9337 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-194-9337 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-194-9337. Primary manufacturer part number: 3901-87.
Features
  • Hose Assembly,nonmetallic — FSC 4720
  • Inside Diameter: 0.250 INCHES NOMINAL IN
  • Nominal Thread Size: 0.375 INCHES SECOND END IN
  • Nominal Thread Size: 0.562 INCHES FIRST END IN
  • Cross-Sectional Shape Style: ROUND
  • Connection Type: THREADED EXTERNAL BOSS SECOND END
  • End Connection Design: STRAIGHT SECOND END
  • Thread Class: 2B FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-00-194-9337, 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 Aqualung Usa, Inc. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN4720-00-194-9337
Primary Part Number3901-87
Item NameHose Assembly,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerAqualung Usa, Inc
StatusACTIVE
Inside Diameter0.250 INCHES NOMINAL IN
Nominal Thread Size0.375 INCHES SECOND END IN
Nominal Thread Size0.562 INCHES FIRST END IN
Cross-Sectional Shape StyleROUND
Connection TypeTHREADED EXTERNAL BOSS SECOND END
End Connection DesignSTRAIGHT SECOND END
Thread Class2B FIRST END
Connection StyleSWIVEL NUT, FLARELESS FIRST END
Connection TypeTHREADED INTERNAL TUBE FIRST END
Layer Composition and LocationOUTER LAYER MOLDED RUBBER, SYNTHETIC AND 1ST LAYER BRAIDED SYNTHETIC CORD
Thread DirectionRIGHT-HAND FIRST END
Inside Surface ConditionSMOOTH
Seat Angle12.0 DEGREES FIRST END
Thread Series DesignatorUNF FIRST END
Inside Surface ConditionSMOOTH
Thread Series DesignatorUNF FIRST END
Exterior ColorBLACK
Seat Angle12.0 DEGREES FIRST END
Nominal Thread Size0.375 INCHES SECOND END IN
Media for Which DesignedAIR SINGLE RESPONSE
Nominal Thread Size0.562 INCHES FIRST END IN
Outside Diameter0.505 INCHES NOMINAL IN
End Connection DesignSTRAIGHT FIRST END
Measuring Method and Length6.625 INCHES NOMINAL OVERALL IN
Thread DirectionRIGHT-HAND SECOND END
Layer Composition and LocationOUTER LAYER MOLDED RUBBER, SYNTHETIC AND 1ST LAYER BRAIDED SYNTHETIC CORD
Thread Series DesignatorUNF SECOND END
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6520-00-043-0843C-180 INTERCHANGEABLE
Crown Set,dental,temporary
3m Company Div 3m Espe Div.
8040-00-144-9789 INTERCHANGEABLE
Primer,adhesive
5330-00-235-95303901 INTERCHANGEABLE
Gasket
Lawler Manufacturing Company, Inc.
3120-00-339-26068157P INTERCHANGEABLE
Bushing,sleeve
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5340-00-634-7797390-1 INTERCHANGEABLE
Loop,strap Fastener
Buckles International, Inc.
6625-00-649-7838390-1 INTERCHANGEABLE
Test Set,crystal Unit,quartz
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
4330-00-736-51773901 INTERCHANGEABLE
Filter,glass,fluted
Illinois Tool Works, Inc. Div Magnaflux
5985-01-052-1272390-1 INTERCHANGEABLE
Antenna
Shakespeare Company, Llc Div Military Electronics
4940-01-081-72843901 INTERCHANGEABLE
Stand,maintenance,armature
Prj Equipment Co
6610-01-219-68253901 INTERCHANGEABLE
Capsule,link Assemb
Kearflex Engineering Company
Cross-Reference Index
Part NumberManufacturer
3901 Aqualung Usa, Inc (USA)
C3100-43 Aqualung Usa, Inc (USA)
3901-87 PRIMARY Aqualung Usa, Inc (USA)
Related Parts
6520-00-043-0843INTERCHANGEABLE
CROWN SET,DENTAL,TEMPORARY
C-180
8040-00-144-9789INTERCHANGEABLE
PRIMER,ADHESIVE
5330-00-235-9530INTERCHANGEABLE
GASKET
3901
3120-00-339-2606INTERCHANGEABLE
BUSHING,SLEEVE
8157P
5340-00-634-7797INTERCHANGEABLE
LOOP,STRAP FASTENER
390-1
6625-00-649-7838INTERCHANGEABLE
TEST SET,CRYSTAL UNIT,QUARTZ
390-1
4330-00-736-5177INTERCHANGEABLE
FILTER,GLASS,FLUTED
3901
5985-01-052-1272INTERCHANGEABLE
ANTENNA
390-1
4940-01-081-7284INTERCHANGEABLE
STAND,MAINTENANCE,ARMATURE
3901
6610-01-219-6825INTERCHANGEABLE
CAPSULE,LINK ASSEMB
3901
6625-01-544-8410INTERCHANGEABLE
LEAD,TEST
3901
4510-01-553-3827INTERCHANGEABLE
SHOWER HEAD
3901

Frequently Asked Questions

What is NSN 4720-00-194-9337?

NSN 4720-00-194-9337 is a Hose Assembly,nonmetallic, manufactured by Aqualung Usa, Inc, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-00-194-9337?

NSN 4720-00-194-9337 has 3 cross-referenced part numbers: 3901 (Aqualung Usa, Inc), C3100-43 (Aqualung Usa, Inc), 3901-87 (Aqualung Usa, Inc).

What NSN replaces 4720-00-194-9337?

There are 12 known substitutes for 4720-00-194-9337: 6520-00-043-0843, 8040-00-144-9789, 5330-00-235-9530 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3901-87?

Key specifications for 3901-87: Special Features: FIRST END FITTING FOR O RING SEAL; Special Features: FIRST END FITTING FOR O RING SEAL; Inside Diameter: 0.250 INCHES NOMINAL IN; Nominal Thread Size: 0.375 INCHES SECOND END IN. 30 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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