Seat Relief, Check4540-01-438-6811

NSN 4540-01-438-6811 · NIIN 014386811 · Part number W4-1001-04

Fenner Fluid Power Inc · FSC 4540 — Waste Disposal Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 53899

Government record, cited

NSN 4540-01-438-6811 — this item is cataloged by the U.S. Government under National Stock Number 4540-01-438-6811. Manufacturer of record part number: W4-1001-04.

Also searched as 4540-01-438-6811 · 4540014386811 · NIIN 014386811 · 01-438-6811 · FSC 4540 Waste Disposal Equipment · CAGE 53899 · W4-1001-04

Nearby stock numbers ← 4540-01-438-6808 Ball, Detent · 4540-01-438-6814 Pilot, Trash Compact →

Features

Seat Relief,check — FSC 4540
2 manufacturer part numbers on file
Manufacturer of record: Fenner Fluid Power Inc

Identification

NSN: 4540-01-438-6811
NIIN: 014386811
FSC: 4540 — Waste Disposal Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: W4-1001-04
Manufacturer: Fenner Fluid Power Inc

General Description

The Seat Relief,check, cataloged under National Stock Number 4540-01-438-6811, is classified within Federal Supply Class 4540 (Waste Disposal Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Fenner Fluid Power Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Seat Relief,check
FSC / FSG	4540 — Waste Disposal Equipment (FSG 45)
Manufacturers	Fenner Fluid Power Inc (CAGE 53899); Spx Fluid Power (CAGE U2067)

Technical Specifications

Parameter	Value
NSN	4540-01-438-6811
Primary Part Number	W4-1001-04
Item Name	Seat Relief,check
FSC / FSG	4540 / 45 — Waste Disposal Equipment
Manufacturer	Fenner Fluid Power Inc
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

Cross-Reference Index

Part Number	Manufacturer
W4-1001-04 PRIMARY	Fenner Fluid Power Inc (USA)
W4-1001-04	Spx Fluid Power (GBR)

No interchangeability data on file.

Other items in FSC 4540 — Waste Disposal Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4540-00-001-1243

4540-00-001-1243 · Item name not on file

4540-00-001-6053

4540-00-001-6053 · Item name not on file

4540-00-001-7002

4540-00-001-7002 · Item name not on file

4540-00-001-7832

4540-00-001-7832 · Item name not on file

4540-00-001-7839

HEATING ELEMENT,ELE

4540-00-001-9407

4540-00-001-9407 · Item name not on file

4540-00-003-0152

4540-00-003-0152 · Item name not on file

4540-00-003-1491

4540-00-003-1491 · Item name not on file

Frequently Asked Questions

What is NSN 4540-01-438-6811?

NSN 4540-01-438-6811 is a Seat Relief,check, manufactured by Fenner Fluid Power Inc, classified under FSC 4540, Waste Disposal Equipment. Status: active.

What part numbers are listed for NSN 4540-01-438-6811?

NSN 4540-01-438-6811 has 2 manufacturer part numbers on file: W4-1001-04 (Fenner Fluid Power Inc), W4-1001-04 (Spx Fluid Power).

Is NSN 4540-01-438-6811 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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