PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

599-5Cock,poppet Drain

Lockheed Martin Corp · NSN 4820-00-858-0476 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-858-0476 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-858-0476. Primary manufacturer part number: 599-5.
Features
  • Cock,poppet Drain — FSC 4820
  • Maximum Operating Temp: 165.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Bolt Hole Quantity: 4 FIRST END
  • Valve Operation Method: MANUAL
  • Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
  • Bolt Hole Nominal Diameter: 0.264 INCHES FIRST END IN
  • Nominal Thickness: 0.190 INCHES FIRST END IN
  • Operating Pressure: 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Applications
  • Applications requiring Aluminum Alloy 705.0 Body construction
General Description

The Cock,poppet Drain, cataloged under National Stock Number 4820-00-858-0476, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-858-0476
Primary Part Number599-5
Item NameCock,poppet Drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Maximum Operating Temp165.0 FAHRENHEIT SINGLE RESPONSE DEGF
Bolt Hole Quantity4 FIRST END
Valve Operation MethodMANUAL
Media for Which DesignedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
Bolt Hole Nominal Diameter0.264 INCHES FIRST END IN
Nominal Thickness0.190 INCHES FIRST END IN
Operating Pressure5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Style DesignatorANGLE
Flange Face DesignPLAIN FIRST END
MaterialALUMINUM ALLOY 705.0 BODY
Flange ShapeRECTANGULAR WITH HOLES FIRST END
Nominal Width3.000 INCHES FIRST END IN
Connection TypeFLANGE FIRST END
Flow Control DevicePOPPET
Nominal Length3.000 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-00-032-0416663290 INTERCHANGEABLE
Transformer,power
Lockheed Martin Corporation Div Rms - Mitchel Field
5930-00-253-74500481214 INTERCHANGEABLE
Switch,push-Pull
Agco Corp Parts Opn
5940-00-834-1638 INTERCHANGEABLE
Terminal Board
5360-00-966-99065995-1 INTERCHANGEABLE
Spring,helical,extension
The Boeing Company Div Legacy Am&m
1680-01-134-03225995 INTERCHANGEABLE
Bracket,inboard Detector
Meggitt Safety Systems Inc
5998-01-152-47751488831-000 INTERCHANGEABLE
Extender Card,electronic Test
Lockheed Martin Corporation Div Rotary and Mission Systems
4820-01-387-95505995-G501 INTERCHANGEABLE
Valve,purge
Howell Laboratories Inc Dba Howell Laboratories Inc
3460-01-479-15795995 INTERCHANGEABLE
Clamp,parallel,machinist's
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5360-01-617-13535995 INTERCHANGEABLE
Spring,helical,compression
Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.
Cross-Reference Index
Part NumberManufacturer
599-5 Parker Hannifin Corporation Dba Quick Coupling Div Div Quick Coupling Division Bruning Operation (USA)
599-5 PRIMARY Lockheed Martin Corp (USA)
634247-3 Lockheed Martin Corp (USA)
Related Parts
5950-00-032-0416INTERCHANGEABLE
TRANSFORMER,POWER
663290
5930-00-253-7450INTERCHANGEABLE
SWITCH,PUSH-PULL
0481214
5940-00-834-1638INTERCHANGEABLE
TERMINAL BOARD
5360-00-966-9906INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5995-1
1680-01-134-0322INTERCHANGEABLE
BRACKET,INBOARD DETECTOR
5995
5998-01-152-4775INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
1488831-000
4820-01-387-9550INTERCHANGEABLE
VALVE,PURGE
5995-G501
3460-01-479-1579INTERCHANGEABLE
CLAMP,PARALLEL,MACHINIST'S
5995
5360-01-617-1353INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5995

Frequently Asked Questions

What is NSN 4820-00-858-0476?

NSN 4820-00-858-0476 is a Cock,poppet Drain, manufactured by Lockheed Martin Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-858-0476?

NSN 4820-00-858-0476 has 3 cross-referenced part numbers: 599-5 (Parker Hannifin Corporation Dba Quick Coupling Div Div Quick Coupling Division Bruning Operation), 599-5 (Lockheed Martin Corp), 634247-3 (Lockheed Martin Corp).

What NSN replaces 4820-00-858-0476?

There are 9 known substitutes for 4820-00-858-0476: 5950-00-032-0416, 5930-00-253-7450, 5940-00-834-1638 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 599-5?

Key specifications for 599-5: Maximum Operating Temp: 165.0 FAHRENHEIT SINGLE RESPONSE DEGF; Bolt Hole Quantity: 4 FIRST END; Valve Operation Method: MANUAL; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE. 15 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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