PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100371Retainer,seat,valve

Air Cruisers Company, Llc · NSN 4820-01-677-8209 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-677-8209 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-677-8209. Primary manufacturer part number: 100371.
Features
  • Retainer,seat,valve — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Air Cruisers Company, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Retainer,seat,valve, cataloged under National Stock Number 4820-01-677-8209, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Air Cruisers Company, Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-677-8209
Primary Part Number100371
Item NameRetainer,seat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAir Cruisers Company, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
1650-00-095-4323100371 INTERCHANGEABLE
Rotor,pump
Weldon Pump Llc
5330-00-472-6189100371 INTERCHANGEABLE
Gasket
Clayton Manufacturing Company
6685-00-575-4611 INTERCHANGEABLE
Thermocouple,contact
5999-00-686-9076SMC416709-01 INTERCHANGEABLE
Clip,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6630-01-071-2500023-0240 INTERCHANGEABLE
Pyrolyzer,solids
Applied Biosystems, Llc Dba Life Technologies
5130-01-128-2625100371 INTERCHANGEABLE
Piston Locator
Huck International, Inc. Div Kingston Operations
5306-01-346-3680CM/100371 INTERCHANGEABLE
Bolt,shoulder
Daimler Truck North America Llc
4810-01-416-6848100371 INTERCHANGEABLE
Valve,flow Control
Coffin Turbo Pump Inc
4930-01-553-0409100371 INTERCHANGEABLE
Rod,stay
M. E. Industries, Inc.
Cross-Reference Index
Part NumberManufacturer
100371 PRIMARY Air Cruisers Company, Llc (USA)
Related Parts
1650-00-095-4323INTERCHANGEABLE
ROTOR,PUMP
100371
5330-00-472-6189INTERCHANGEABLE
GASKET
100371
6685-00-575-4611INTERCHANGEABLE
THERMOCOUPLE,CONTACT
5999-00-686-9076INTERCHANGEABLE
CLIP,ELECTRICAL
SMC416709-01
6630-01-071-2500INTERCHANGEABLE
PYROLYZER,SOLIDS
023-0240
5130-01-128-2625INTERCHANGEABLE
PISTON LOCATOR
100371
5306-01-346-3680INTERCHANGEABLE
BOLT,SHOULDER
CM/100371
4810-01-416-6848INTERCHANGEABLE
VALVE,FLOW CONTROL
100371
4930-01-553-0409INTERCHANGEABLE
ROD,STAY
100371

Frequently Asked Questions

What is NSN 4820-01-677-8209?

NSN 4820-01-677-8209 is a Retainer,seat,valve, manufactured by Air Cruisers Company, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-677-8209?

NSN 4820-01-677-8209 has 1 cross-referenced part number: 100371 (Air Cruisers Company, Llc).

What NSN replaces 4820-01-677-8209?

There are 9 known substitutes for 4820-01-677-8209: 1650-00-095-4323, 5330-00-472-6189, 6685-00-575-4611 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 100371?

Key specifications for 100371: End Item Identification: 4220015058727; Part Name Assigned by Controlling Agency: BALL SEAT VALVE. 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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