PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

221786NValve,safety Relief

Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems · NSN 4820-00-774-5285 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-774-5285 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-774-5285. Primary manufacturer part number: 221786N.
Features
  • Valve,safety Relief — FSC 4820
  • Thread Series Designator: NPT FIRST END
  • Valve Operation Method: AUTOMATIC
  • Flow Control Device: BALL
  • Bonnet Type: INSIDE SPRING
  • Nominal Thread Size: 0.250 INCHES FIRST END IN
  • Thread Direction: RIGHT-HAND FIRST END
  • Bonnet Attachment Method: THREADED
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Flow Control Device construction
General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-00-774-5285, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-774-5285
Primary Part Number221786N
Item NameValve,safety Relief
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
StatusACTIVE
Thread Series DesignatorNPT FIRST END
Valve Operation MethodAUTOMATIC
Flow Control DeviceBALL
Bonnet TypeINSIDE SPRING
Nominal Thread Size0.250 INCHES FIRST END IN
Thread DirectionRIGHT-HAND FIRST END
Bonnet Attachment MethodTHREADED
Connection StylePLAIN (PIPE) FIRST END
Disk Loading MethodSPRING
MaterialSTEEL FLOW CONTROL DEVICE
Style DesignatorANGLE
MaterialCOPPER ALLOY BODY
Opening Pressure Setting100.0 POUNDS PER SQUARE INCH LBS
Connection TypeTHREADED EXTERNAL PIPE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2910-00-213-8511 INTERCHANGEABLE
Filler Assembly,fue
5865-00-260-1703109194-2 INTERCHANGEABLE
Filter Assy,color-I
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
4140-00-545-3422CTS6-331 INTERCHANGEABLE
Impeller,fan,axial
Lau Industries Inc
4820-00-595-2761284142N INTERCHANGEABLE
Valve,safety Relief
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
3020-01-284-89961091942 INTERCHANGEABLE
Gear,spur
Whippany Actuation Systems, Llc
5975-01-587-105412046-1 INTERCHANGEABLE
Rail,guide
L-3 Services, Inc. Dba Command & Control Systems Software & Expeditionary Operation
Cross-Reference Index
Part NumberManufacturer
120461 Country Caterers Bbq Inc. Dba Country Caterer's Use CAGE Code 0mm69 for Cataloging (USA)
2255197 Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA)
1-TN-255 Oshkosh Defense Llc (USA)
1091942 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
7745285 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
2204201 General Motors Llc Dba General Motors Llc (USA)
221786 Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA)
221786N PRIMARY Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA)
2204201 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
1-TN-255 Oshkosh Corp (USA)
Related Parts
2910-00-213-8511INTERCHANGEABLE
FILLER ASSEMBLY,FUE
5865-00-260-1703INTERCHANGEABLE
FILTER ASSY,COLOR-I
109194-2
4140-00-545-3422INTERCHANGEABLE
IMPELLER,FAN,AXIAL
CTS6-331
4820-00-595-2761INTERCHANGEABLE
VALVE,SAFETY RELIEF
284142N
3020-01-284-8996INTERCHANGEABLE
GEAR,SPUR
1091942
5975-01-587-1054INTERCHANGEABLE
RAIL,GUIDE
12046-1

Frequently Asked Questions

What is NSN 4820-00-774-5285?

NSN 4820-00-774-5285 is a Valve,safety Relief, manufactured by Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-774-5285?

NSN 4820-00-774-5285 has 10 cross-referenced part numbers: 120461 (Country Caterers Bbq Inc. Dba Country Caterer's Use CAGE Code 0mm69 for Cataloging), 2255197 (Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems), 1-TN-255 (Oshkosh Defense Llc), 1091942 (Chrysler Realty Company Llc Dba Daimler Chrysler), 7745285 (U S Army Tank Automotive Command Amsta-Im-Mm) and 5 more.

What NSN replaces 4820-00-774-5285?

There are 6 known substitutes for 4820-00-774-5285: 2910-00-213-8511, 5865-00-260-1703, 4140-00-545-3422 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 221786N?

Key specifications for 221786N: Thread Series Designator: NPT FIRST END; Valve Operation Method: AUTOMATIC; Flow Control Device: BALL; Bonnet Type: INSIDE SPRING. 14 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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