PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20557Hose,preformed

Gates Corporation · NSN 4720-00-035-8919 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-00-035-8919 — this item is cataloged by the U.S. Government under National Stock Number 4720-00-035-8919. Primary manufacturer part number: 20557.
Features
  • Hose,preformed — FSC 4720
  • Offset Distance: 4.500 INCHES NOMINAL IN
  • Style Designator: TWO BEND
  • Second Arm Length: 2.460 INCHES NOMINAL IN
  • Bend Radius: 3.000 INCHES NOMINAL IN
  • Material: RUBBER CHLOROPRENE CLASS CR COVER
  • Material: RUBBER CHLOROPRENE CLASS CR OVERALL
  • Working Length: 8.690 INCHES NOMINAL IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Rubber Chloroprene Class Cr Cover construction
General Description

The Hose,preformed, cataloged under National Stock Number 4720-00-035-8919, 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 Gates Corporation. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4720-00-035-8919
Primary Part Number20557
Item NameHose,preformed
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerGates Corporation
StatusCANCELLED
Offset Distance4.500 INCHES NOMINAL IN
Style DesignatorTWO BEND
Second Arm Length2.460 INCHES NOMINAL IN
Bend Radius3.000 INCHES NOMINAL IN
MaterialRUBBER CHLOROPRENE CLASS CR COVER
MaterialRUBBER CHLOROPRENE CLASS CR OVERALL
Working Length8.690 INCHES NOMINAL IN
Wall Thickness0.188 INCHES MINIMUM IN
Center to Center Distance7.690 INCHES NOMINAL IN
Inside Diameter2.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5815-00-125-48697423 INTERCHANGEABLE
Bar,t,teletypewriter
Telemechanics Inc
5910-00-154-0000C0405H INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Rauland-Borg Corp
5325-00-200-3560 INTERCHANGEABLE
Ring,retaining
5340-00-229-7717 INTERCHANGEABLE
Clamp,loop
6130-00-235-099220557 INTERCHANGEABLE
Vibrator,self-Rectifying
Naval Ship Systems Command
5930-00-302-1125C2001-501 INTERCHANGEABLE
Switch,toggle
Calculagraph Company Dba Control Products, Inc.
6760-00-370-29917423 INTERCHANGEABLE
Tripod
Quickset Defense Technologies Llc
5950-00-477-6703 INTERCHANGEABLE
Transformer,power
5340-00-486-51387280 INTERCHANGEABLE
Retainer,helical Compression Spr
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
5930-00-564-37497423 INTERCHANGEABLE
Switch,pull
Drs Sustainment Systems Inc
Cross-Reference Index
Part NumberManufacturer
20557 PRIMARY Gates Corporation (USA)
7423 PRIMARY Napco International Llc Dba Napco International Inc (USA)
7423 Napco Intl Inc (USA)
304596R1 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
7280 PRIMARY Finn Corp Dba Finn Corp (USA)
CH557 Gates Corporation (USA)
304596R1 Navistar International Corporation Dba Navistar (USA)
Related Parts
5815-00-125-4869INTERCHANGEABLE
BAR,T,TELETYPEWRITER
7423
5910-00-154-0000INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
C0405H
5325-00-200-3560INTERCHANGEABLE
RING,RETAINING
5340-00-229-7717INTERCHANGEABLE
CLAMP,LOOP
6130-00-235-0992INTERCHANGEABLE
VIBRATOR,SELF-RECTIFYING
20557
5930-00-302-1125INTERCHANGEABLE
SWITCH,TOGGLE
C2001-501
6760-00-370-2991INTERCHANGEABLE
TRIPOD
7423
5950-00-477-6703INTERCHANGEABLE
TRANSFORMER,POWER
5340-00-486-5138INTERCHANGEABLE
RETAINER,HELICAL COMPRESSION SPR
7280
5930-00-564-3749INTERCHANGEABLE
SWITCH,PULL
7423
2990-00-707-7513INTERCHANGEABLE
MUFFLER,EXHAUST
T-7280
5960-00-827-1201INTERCHANGEABLE
ELECTRON TUBE

Frequently Asked Questions

What is NSN 4720-00-035-8919?

NSN 4720-00-035-8919 is a Hose,preformed, manufactured by Gates Corporation, classified under FSC 4720 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4720-00-035-8919?

NSN 4720-00-035-8919 has 7 cross-referenced part numbers: 20557 (Gates Corporation), 7423 (Napco International Llc Dba Napco International Inc), 7423 (Napco Intl Inc), 304596R1 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 7280 (Finn Corp Dba Finn Corp) and 2 more.

What NSN replaces 4720-00-035-8919?

There are 12 known substitutes for 4720-00-035-8919: 5815-00-125-4869, 5910-00-154-0000, 5325-00-200-3560 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20557?

Key specifications for 20557: Offset Distance: 4.500 INCHES NOMINAL IN; Style Designator: TWO BEND; Second Arm Length: 2.460 INCHES NOMINAL IN; Bend Radius: 3.000 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4720-00-035-8919 still in active supply?

NSN 4720-00-035-8919 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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