PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

250021Injector,chemical

Hydro Engineering Innovation, Llc · NSN 4940-01-565-2364 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-01-565-2364 — this item is cataloged by the U.S. Government under National Stock Number 4940-01-565-2364. Primary manufacturer part number: 250021.
Features
  • Injector,chemical — FSC 4940
  • 1 verified cross-reference
  • Primary manufacturer: Hydro Engineering Innovation, Llc
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Injector,chemical, cataloged under National Stock Number 4940-01-565-2364, is classified within Federal Supply Class 4940 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Hydro Engineering Innovation, Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4940-01-565-2364
Primary Part Number250021
Item NameInjector,chemical
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerHydro Engineering Innovation, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
1650-00-079-0843830042 INTERCHANGEABLE
Oil Return Tube
Grindley Manufacturing Inc.
5955-00-211-23302-5-0026 INTERCHANGEABLE
Crystal Unit,quartz
Atec Inc
3110-00-884-0088250021 INTERCHANGEABLE
Bearing,ball,annular
Rotron Incorporated
3610-01-007-7197250021 INTERCHANGEABLE
Cutter,rotary Base
Microwave Power Products, Inc. Div Microwave Power Products Division
5315-01-193-0282250021 INTERCHANGEABLE
Pin,straight,headed
Lockheed Martin Corp Electronics and Missiles Div
5342-01-262-303725002-1 INTERCHANGEABLE
Cover,special
Drs Signal Solutions, Inc.
Cross-Reference Index
Part NumberManufacturer
250021 PRIMARY Hydro Engineering Innovation, Llc (USA)
Related Parts
1650-00-079-0843INTERCHANGEABLE
OIL RETURN TUBE
830042
5955-00-211-2330INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
2-5-0026
3110-00-884-0088INTERCHANGEABLE
BEARING,BALL,ANNULAR
250021
3610-01-007-7197INTERCHANGEABLE
CUTTER,ROTARY BASE
250021
5315-01-193-0282INTERCHANGEABLE
PIN,STRAIGHT,HEADED
250021
5342-01-262-3037INTERCHANGEABLE
COVER,SPECIAL
25002-1

Frequently Asked Questions

What is NSN 4940-01-565-2364?

NSN 4940-01-565-2364 is a Injector,chemical, manufactured by Hydro Engineering Innovation, Llc, classified under FSC 4940 (No Item Name Available). Status: active.

What are the part numbers for NSN 4940-01-565-2364?

NSN 4940-01-565-2364 has 1 cross-referenced part number: 250021 (Hydro Engineering Innovation, Llc).

What NSN replaces 4940-01-565-2364?

There are 6 known substitutes for 4940-01-565-2364: 1650-00-079-0843, 5955-00-211-2330, 3110-00-884-0088 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 250021?

Key specifications for 250021: Special Features: USED TO DRAW CHEMICAL THRU DUAL WAND. 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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