PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6608Stem,fluid Valve

Lawler Manufacturing Company, Inc. · NSN 4820-01-221-2121 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-221-2121 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-221-2121. Primary manufacturer part number: 6608.
Features
  • Stem,fluid Valve — FSC 4820
  • 3 verified cross-references
  • Primary manufacturer: Lawler Manufacturing Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-221-2121, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. This item has 3 commercial cross-references from 1 manufacturer, 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
NSN4820-01-221-2121
Primary Part Number6608
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5815-00-126-864171998 INTERCHANGEABLE
Collar,locking
Telemechanics Inc
3040-00-138-861371998 INTERCHANGEABLE
Connecting Link,rigid
L3harris Technologies, Inc Div Space & Airborne Systems
3930-00-175-4702 INTERCHANGEABLE
Mast,first Stage
1650-00-306-295971998 INTERCHANGEABLE
Adapter,hydraulic M
Northrop Grumman Systems Corporation
4820-00-533-83426608 INTERCHANGEABLE
Stem,fluid Valve
Derbyshire Machine & Tool Co
3120-00-795-469527543 INTERCHANGEABLE
Roller,linear-Rotary Motion
Napco International Llc Dba Napco International Inc
4730-00-826-426810308 INTERCHANGEABLE
Clamp,hose
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
5950-01-069-9395 INTERCHANGEABLE
Coil,radio Frequency
2920-01-243-337912043714 INTERCHANGEABLE
Lead,ignition,engine
General Motors Llc Dba General Motors Llc
4730-01-251-3039350-010 INTERCHANGEABLE
Clamp,hose
Acd Tridon Inc
Cross-Reference Index
Part NumberManufacturer
71998 Lawler Manufacturing Company, Inc. (USA)
71998 FIND 23 Lawler Manufacturing Company, Inc. (USA)
6608 PRIMARY Lawler Manufacturing Company, Inc. (USA)
Related Parts
5815-00-126-8641INTERCHANGEABLE
COLLAR,LOCKING
71998
3040-00-138-8613INTERCHANGEABLE
CONNECTING LINK,RIGID
71998
3930-00-175-4702INTERCHANGEABLE
MAST,FIRST STAGE
1650-00-306-2959INTERCHANGEABLE
ADAPTER,HYDRAULIC M
71998
4820-00-533-8342INTERCHANGEABLE
STEM,FLUID VALVE
6608
3120-00-795-4695INTERCHANGEABLE
ROLLER,LINEAR-ROTARY MOTION
27543
4730-00-826-4268INTERCHANGEABLE
CLAMP,HOSE
10308
5950-01-069-9395INTERCHANGEABLE
COIL,RADIO FREQUENCY
2920-01-243-3379INTERCHANGEABLE
LEAD,IGNITION,ENGINE
12043714
4730-01-251-3039INTERCHANGEABLE
CLAMP,HOSE
350-010
6150-01-288-4843INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
10-4472
5945-01-460-5121INTERCHANGEABLE
SOLENOID SUBASSEMBLY
6608

Frequently Asked Questions

What is NSN 4820-01-221-2121?

NSN 4820-01-221-2121 is a Stem,fluid Valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-221-2121?

NSN 4820-01-221-2121 has 3 cross-referenced part numbers: 71998 (Lawler Manufacturing Company, Inc.), 71998 FIND 23 (Lawler Manufacturing Company, Inc.), 6608 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-01-221-2121?

There are 12 known substitutes for 4820-01-221-2121: 5815-00-126-8641, 3040-00-138-8613, 3930-00-175-4702 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6608?

Key specifications for 6608: Special Features: NICKEL COPPER QQ-N-288;O/A LENGTH 11.062 IN.;ONE END THREADED EXTERNALLY 0.625-18 UNF-2A THDS;OTHER END THREADED 0.875-18 UNS-2A THDS;MAJOR DIA 0.875 IN. A. 1 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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