PartsTable TECHNICAL DATA SHEET

NSN 4520-01-641-6897Government record, cited

Register, Air4520-01-641-6897

NSN 4520-01-641-6897 · NIIN 016416897 · Part number 250V 40X20

A J Manufacturing Company Inc · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 04571

Government record, cited

NSN 4520-01-641-6897 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-641-6897. Manufacturer of record part number: 250V 40X20.

Also searched as 4520-01-641-6897 · 4520016416897 · NIIN 016416897 · 01-641-6897 · FSC 4520 Space and Water Heating Equipment · CAGE 04571 · 250V 40X20

Nearby stock numbers ← 4520-01-641-6895 Register, Air · 4520-01-641-7675 Heater, Duct Type, Stationary →

Features

Register,air — FSC 4520
1 manufacturer part number on file
Manufacturer of record: A J Manufacturing Company Inc

Identification

NSN: 4520-01-641-6897
NIIN: 016416897
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: 250V 40X20
Manufacturer: A J Manufacturing Company Inc

General Description

The Register,air, cataloged under National Stock Number 4520-01-641-6897, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is A J Manufacturing Company Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4520-01-641-6897
Primary Part Number	250V 40X20
Item Name	Register,air
FSC / FSG	4520 / 45 — Space and Water Heating Equipment
Manufacturer	A J Manufacturing Company 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)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
250V 40X20 PRIMARY	A J Manufacturing Company Inc (USA)

No interchangeability data on file.

Other items in FSC 4520 — Space and Water Heating Equipment

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

4520-00-000-0098

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-000-0099

4520-00-000-0099 · Item name not on file

4520-00-001-1240

4520-00-001-1240 · Item name not on file

4520-00-001-3518

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-3519

HEATING ELEMENT,ELECTRICAL,IMMER

4520-00-001-6052

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-6298

HEATING ELEMENT,ELECTRICAL,NONIM

4520-00-001-7726

HEATER,DUCT TYPE,PORTABLE

Frequently Asked Questions

What is NSN 4520-01-641-6897?

NSN 4520-01-641-6897 is a Register,air, manufactured by A J Manufacturing Company Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.

What part numbers are listed for NSN 4520-01-641-6897?

NSN 4520-01-641-6897 has 1 manufacturer part number on file: 250V 40X20 (A J Manufacturing Company Inc).

What are the specifications of 250V 40X20?

Key specifications for 250V 40X20: Overall Height: 20.0 INCHES NOMINAL IN; Overall Length: 40.0 INCHES NOMINAL IN; Special Features: OVERSEAS METRIC 1016MMX508MM; Part Name Assigned by Controlling Agency: SUPPLY REGISTER 40"X20". 0 specifications are documented in the U.S. Government catalog.

Is NSN 4520-01-641-6897 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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