PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4971-G501Cock,drain

Howell Laboratories Inc Dba Howell Laboratories Inc · NSN 4820-01-185-6655 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-185-6655 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-185-6655. Primary manufacturer part number: 4971-G501.
Features
  • Cock,drain — FSC 4820
  • Material: COPPER ALLOY BODY
  • Flow Control Device: DISK
  • 6 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 4820-01-185-6655, 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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-185-6655
Primary Part Number4971-G501
Item NameCock,drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHowell Laboratories Inc Dba Howell Laboratories Inc
StatusACTIVE
MaterialCOPPER ALLOY BODY
Flow Control DeviceDISK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-141-91082207-8-8 INTERCHANGEABLE
Elbow,pipe
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
2825-00-146-00514971 INTERCHANGEABLE
Shaft Assembly
Northrop Grumman Systems Corporation Div Marine Systems
5330-00-179-210672-58500-539 INTERCHANGEABLE
Seal,plain Encased
Fairbanks Morse, Llc
2815-00-273-060165325 INTERCHANGEABLE
Ring,piston
Cummins Inc.
4730-00-277-4780161256 INTERCHANGEABLE
Fitting,lubrication
Goodrich Corporation
5330-00-317-4681348-73 INTERCHANGEABLE
Seal,oil
Steward Machine Co Inc
9390-00-531-3110KSD4520-1 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
Kaman Aerospace Corporation Dba Air Vehicles & Mro Division
1680-00-761-61594973 INTERCHANGEABLE
Cap,channel,seat
B/e Aerospace Inc Dba Interturbine
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
Cross-Reference Index
Part NumberManufacturer
4971B-G501 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4971 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4973 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
SA602D Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America (USA)
4971-G501 PRIMARY Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4973 PIECE 10 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
Related Parts
4730-00-141-9108INTERCHANGEABLE
ELBOW,PIPE
2207-8-8
2825-00-146-0051INTERCHANGEABLE
SHAFT ASSEMBLY
4971
5330-00-179-2106INTERCHANGEABLE
SEAL,PLAIN ENCASED
72-58500-539
2815-00-273-0601INTERCHANGEABLE
RING,PISTON
65325
4730-00-277-4780INTERCHANGEABLE
FITTING,LUBRICATION
161256
5330-00-317-4681INTERCHANGEABLE
SEAL,OIL
348-73
9390-00-531-3110INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
KSD4520-1
1680-00-761-6159INTERCHANGEABLE
CAP,CHANNEL,SEAT
4973
5910-00-893-5179INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
11065337-004
4710-01-005-3599INTERCHANGEABLE
TUBE ASSEMBLY,METAL
4971
4710-01-005-3600INTERCHANGEABLE
TUBE ASSEMBLY,METAL
4973
4820-01-131-3285INTERCHANGEABLE
COCK,DRAIN
4971-G502

Frequently Asked Questions

What is NSN 4820-01-185-6655?

NSN 4820-01-185-6655 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 4820-01-185-6655?

NSN 4820-01-185-6655 has 6 cross-referenced part numbers: 4971B-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4971 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4973 (Howell Laboratories Inc Dba Howell Laboratories Inc), SA602D (Parker-Hannifin Corporation Dba Pneumatic North America Div Pneumatics North America), 4971-G501 (Howell Laboratories Inc Dba Howell Laboratories Inc) and 1 more.

What NSN replaces 4820-01-185-6655?

There are 12 known substitutes for 4820-01-185-6655: 4730-00-141-9108, 2825-00-146-0051, 5330-00-179-2106 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4971-G501?

Key specifications for 4971-G501: Material: COPPER ALLOY BODY; Flow Control Device: DISK. 2 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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