PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21661Screw,assy. Vent

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5305-01-188-0490 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-188-0490 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-188-0490. Primary manufacturer part number: 21661.
Features
  • Screw,assy. Vent — FSC 5305
  • 2 verified cross-references
  • Primary manufacturer: Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,assy. Vent, cataloged under National Stock Number 5305-01-188-0490, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameScrew,assy. Vent
FSC / FSG5305 — No Item Name Available (FSG 53)
ManufacturersStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (CAGE 84760); Am General Llc (CAGE 34623)
Technical Specifications
ParameterValue
NSN5305-01-188-0490
Primary Part Number21661
Item NameScrew,assy. Vent
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6130-00-092-5625 INTERCHANGEABLE
Power Supply
4320-00-163-107199121661 INTERCHANGEABLE
Pump,rotary
Alfa Laval Inc
4720-00-447-353821661 INTERCHANGEABLE
Hose Assembly,nonmetallic
Dressta North America Ltd
6610-00-544-555121661 INTERCHANGEABLE
Cover,plug
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5999-00-920-3734 INTERCHANGEABLE
Mounting Pad,electrical-Electron
1440-00-956-53802166-1 INTERCHANGEABLE
Cable Drum Assembly
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
5330-01-117-408021661 INTERCHANGEABLE
Gasket
Forenta Lp
5360-01-196-401821661 INTERCHANGEABLE
Spring,helical,extension
Barnes Group Inc. Dba Barnes Distribution
5340-01-330-560221661 INTERCHANGEABLE
Seat,helical Compression Spring
Parker Hannifin Corporation Div Hydraulic Systems Division
6625-01-434-688221661 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
Cross-Reference Index
Part NumberManufacturer
21661 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
5740573 Am General Llc (USA)
Related Parts
6130-00-092-5625INTERCHANGEABLE
POWER SUPPLY
4320-00-163-1071INTERCHANGEABLE
PUMP,ROTARY
99121661
4720-00-447-3538INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21661
6610-00-544-5551INTERCHANGEABLE
COVER,PLUG
21661
5999-00-920-3734INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
1440-00-956-5380INTERCHANGEABLE
CABLE DRUM ASSEMBLY
2166-1
5330-01-117-4080INTERCHANGEABLE
GASKET
21661
5360-01-196-4018INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
21661
5340-01-330-5602INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
21661
6625-01-434-6882INTERCHANGEABLE
AMMETER
21661

Frequently Asked Questions

What is NSN 5305-01-188-0490?

NSN 5305-01-188-0490 is a Screw,assy. Vent, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-188-0490?

NSN 5305-01-188-0490 has 2 cross-referenced part numbers: 21661 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 5740573 (Am General Llc).

What NSN replaces 5305-01-188-0490?

There are 10 known substitutes for 5305-01-188-0490: 6130-00-092-5625, 4320-00-163-1071, 4720-00-447-3538 and 7 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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