PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4971-G502Cock,drain

Howell Laboratories Inc Dba Howell Laboratories Inc · NSN 4820-01-131-3285 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-131-3285 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-131-3285. Primary manufacturer part number: 4971-G502.
Features
  • Cock,drain — FSC 4820
  • Material: COPPER ALLOY BODY
  • 3 verified cross-references
  • Primary manufacturer: Howell Laboratories Inc Dba Howell Laboratories Inc
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Cock,drain, cataloged under National Stock Number 4820-01-131-3285, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 1 verified specification, 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-131-3285
Primary Part Number4971-G502
Item NameCock,drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHowell Laboratories Inc Dba Howell Laboratories Inc
StatusACTIVE
MaterialCOPPER ALLOY BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2825-00-146-00514971 INTERCHANGEABLE
Shaft Assembly
Northrop Grumman Systems Corporation Div Marine Systems
4730-00-277-4780161256 INTERCHANGEABLE
Fitting,lubrication
Goodrich Corporation
9390-00-531-3110KSD4520-1 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
Kaman Aerospace Corporation Dba Air Vehicles & Mro Division
5910-00-893-517911065337-004 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Us Army Aviation and Missile Command
4710-01-005-35994971 INTERCHANGEABLE
Tube Assembly,metal
Elliott Machine Works Inc
4820-01-185-66554971-G501 INTERCHANGEABLE
Cock,drain
Howell Laboratories Inc Dba Howell Laboratories Inc
4920-01-375-55284971 INTERCHANGEABLE
Fixture,aircraft Maintenance
Tech Resources, Inc
5935-01-433-56794971 INTERCHANGEABLE
Backshell,electrical Connector
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
4971-G502 PRIMARY Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4971 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4971BG502 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
Related Parts
2825-00-146-0051INTERCHANGEABLE
SHAFT ASSEMBLY
4971
4730-00-277-4780INTERCHANGEABLE
FITTING,LUBRICATION
161256
9390-00-531-3110INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
KSD4520-1
5910-00-893-5179INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
11065337-004
4710-01-005-3599INTERCHANGEABLE
TUBE ASSEMBLY,METAL
4971
4820-01-185-6655INTERCHANGEABLE
COCK,DRAIN
4971-G501
4920-01-375-5528INTERCHANGEABLE
FIXTURE,AIRCRAFT MAINTENANCE
4971
5935-01-433-5679INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
4971

Frequently Asked Questions

What is NSN 4820-01-131-3285?

NSN 4820-01-131-3285 is a Cock,drain, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-131-3285?

NSN 4820-01-131-3285 has 3 cross-referenced part numbers: 4971-G502 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4971 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4971BG502 (Howell Laboratories Inc Dba Howell Laboratories Inc).

What NSN replaces 4820-01-131-3285?

There are 8 known substitutes for 4820-01-131-3285: 2825-00-146-0051, 4730-00-277-4780, 9390-00-531-3110 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4971-G502?

Key specifications for 4971-G502: Material: COPPER ALLOY BODY. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com