PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1605Cock,plug

Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division · NSN 4820-00-274-3635 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-274-3635 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-274-3635. Primary manufacturer part number: 1605.
Features
  • Cock,plug — FSC 4820
  • 14 verified cross-references
  • Primary manufacturer: Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Cock,plug, cataloged under National Stock Number 4820-00-274-3635, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division. This item has 14 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameCock,plug
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersThe Walworth Company (CAGE 63686); Edgewood Chemical Biological Center Ecbc (CAGE 81361); William Powell Company, the Dba Powell Valve Div the Starflo Corporation (CAGE 48422); Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M (CAGE 81349); Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (CAGE 90800)
Technical Specifications
ParameterValue
NSN4820-00-274-3635
Primary Part Number1605
Item NameCock,plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRomac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-022-0072 INTERCHANGEABLE
Nut,plain,hexagon
1730-00-025-23701942-010 INTERCHANGEABLE
Adapter,aircraft Jacking Point
Columbus Jack Corporation Div Columbus Jack
6250-00-077-253229607 INTERCHANGEABLE
Lampholder
Swivelier Company Inc Dba Point Electric Div
7510-00-106-7353 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
5996-00-143-4783591 INTERCHANGEABLE
Amplifier,electronic Control
Power Control Devices, Inc.
8345-00-194-5041 INTERCHANGEABLE
Flag,organizational
5331-00-198-6183 INTERCHANGEABLE
O-Ring
2910-00-374-3555 INTERCHANGEABLE
Pump,fuel,cam Actuated
3120-00-416-8529 INTERCHANGEABLE
Bushing,sleeve
5999-00-433-9895591 INTERCHANGEABLE
Extractor Modules
Aqua Measure Instrument Co Inc Dba Moisture Register Products
Cross-Reference Index
Part NumberManufacturer
554-3-4 The Walworth Company (USA)
B5-45986 Edgewood Chemical Biological Center Ecbc (USA)
B5-45-986 Edgewood Chemical Biological Center Ecbc (USA)
955 3/4IN William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
MILC1203 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1605 PRIMARY Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (USA)
1942 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
5120756 General Motors Corp (USA)
591 The Walworth Company (USA)
7305 3/4IN. Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division (USA)
80E3-4 Crane Co Div Valve Div (USA)
806 Crane Co Div Valve Div (USA)
915016-51 Eclipse Inc Rockford-Eclipse Div (USA)
5120756 Rolls-Royce Solutions America Inc (USA)
Related Parts
5310-00-022-0072INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1730-00-025-2370INTERCHANGEABLE
ADAPTER,AIRCRAFT JACKING POINT
1942-010
6250-00-077-2532INTERCHANGEABLE
LAMPHOLDER
29607
7510-00-106-7353INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
5996-00-143-4783INTERCHANGEABLE
AMPLIFIER,ELECTRONIC CONTROL
591
8345-00-194-5041INTERCHANGEABLE
FLAG,ORGANIZATIONAL
5331-00-198-6183INTERCHANGEABLE
O-RING
2910-00-374-3555INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
3120-00-416-8529INTERCHANGEABLE
BUSHING,SLEEVE
5999-00-433-9895INTERCHANGEABLE
EXTRACTOR MODULES
591
5996-00-461-8258INTERCHANGEABLE
AMPLIFIER,MAGNETIC
1-942
5120-00-473-7388INTERCHANGEABLE
INSERTER,SEAL
7082426

Frequently Asked Questions

What is NSN 4820-00-274-3635?

NSN 4820-00-274-3635 is a Cock,plug, manufactured by Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-274-3635?

NSN 4820-00-274-3635 has 14 cross-referenced part numbers: 554-3-4 (The Walworth Company), B5-45986 (Edgewood Chemical Biological Center Ecbc), B5-45-986 (Edgewood Chemical Biological Center Ecbc), 955 3/4IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), MILC1203 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 9 more.

What NSN replaces 4820-00-274-3635?

There are 12 known substitutes for 4820-00-274-3635: 5310-00-022-0072, 1730-00-025-2370, 6250-00-077-2532 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 4820-00-274-3635 still in active supply?

NSN 4820-00-274-3635 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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