PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21663Screw Assy. Vent

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5305-01-188-0492 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-188-0492 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-188-0492. Primary manufacturer part number: 21663.
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 5305-01-188-0492, 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameScrew Assy. Vent
FSC / FSG5305 — No Item Name Available (FSG 53)
ManufacturersAm General Llc (CAGE 34623); Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (CAGE 84760)
Technical Specifications
ParameterValue
NSN5305-01-188-0492
Primary Part Number21663
Item NameScrew Assy. Vent
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4320-00-163-107399121663 INTERCHANGEABLE
Pump,rotary
Alfa Laval Inc
5330-00-297-733121663 INTERCHANGEABLE
Gasket
Arvinmeritor Inc
2530-00-426-83682-1663 INTERCHANGEABLE
Adjuster,slack,brake
Terex Usa, Llc Dba Terex Equipment Services
5935-00-563-1430 INTERCHANGEABLE
Connector,plug,electrical
2530-01-265-324921239 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Mark Industries
6620-01-310-6653NW21663 INTERCHANGEABLE
Gage Unit,engine
Tld Wollard Llc
Cross-Reference Index
Part NumberManufacturer
5740575 Am General Llc (USA)
21663 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
Related Parts
4320-00-163-1073INTERCHANGEABLE
PUMP,ROTARY
99121663
5330-00-297-7331INTERCHANGEABLE
GASKET
21663
2530-00-426-8368INTERCHANGEABLE
ADJUSTER,SLACK,BRAKE
2-1663
5935-00-563-1430INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2530-01-265-3249INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
21239
6620-01-310-6653INTERCHANGEABLE
GAGE UNIT,ENGINE
NW21663

Frequently Asked Questions

What is NSN 5305-01-188-0492?

NSN 5305-01-188-0492 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: cancelled.

What are the part numbers for NSN 5305-01-188-0492?

NSN 5305-01-188-0492 has 2 cross-referenced part numbers: 5740575 (Am General Llc), 21663 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems).

What NSN replaces 5305-01-188-0492?

There are 6 known substitutes for 5305-01-188-0492: 4320-00-163-1073, 5330-00-297-7331, 2530-00-426-8368 and 3 more. Verify interchangeability with system specifications before substitution.

Is NSN 5305-01-188-0492 still in active supply?

NSN 5305-01-188-0492 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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