Bonnet, Heat Exchanger4420-01-010-8511

NSN 4420-01-010-8511 · NIIN 010108511

FSC 4420 — Heat Exchangers and Steam Condensers · FSG 44 — Furnace, Steam, Drying, Nuclear Reactors

Government record, cited

Also searched as 4420-01-010-8511 · 4420010108511 · NIIN 010108511 · 01-010-8511 · FSC 4420 Heat Exchangers and Steam Condensers

Nearby stock numbers ← 4420-01-010-8179 Cooler, Fluid, Industrial · 4420-01-010-8776 Cooler, Fluid, Industrial →

Features

Bonnet,heat Exchanger — FSC 4420
General Characteristics Item Description: QQ-C-390 CU NI ALLOY D5,90 DEG 4.000 IN. ID TOP INLET W/FLANGE 7.188 IN. OD,10.000 IN. ID HORIZONTAL BODY OUTLET W/FLANGE 13.500 IN. OD,45 DEG 4.500 IN. ID PLAIN FACE BOTTOM DRAIN,12 EQUALLY SPACED 0.688 IN. DIA MTG HOLES ON 12.375 IN. DIA BOLT CIRCLE IN

Identification

NSN: 4420-01-010-8511
NIIN: 010108511
FSC: 4420 — Heat Exchangers and Steam Condensers
FSG: 44 — Furnace, Steam, Drying, Nuclear Reactors

General Description

The Bonnet,heat Exchanger, cataloged under National Stock Number 4420-01-010-8511, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4420-01-010-8511
Item Name	Bonnet,heat Exchanger
FSC / FSG	4420 / 44 — Heat Exchangers and Steam Condensers
Status	ACTIVE
General Characteristics Item Description	QQ-C-390 CU NI ALLOY D5,90 DEG 4.000 IN. ID TOP INLET W/FLANGE 7.188 IN. OD,10.000 IN. ID HORIZONTAL BODY OUTLET W/FLANGE 13.500 IN. OD,45 DEG 4.500 IN. ID PLAIN FACE BOTTOM DRAIN,12 EQUALLY SPACED 0.688 IN. DIA MTG HOLES ON 12.375 IN. DIA BOLT CIRCLE IN

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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
3-124-3-10-207-02	3/9 Design control — primary reference Howden Buffalo, Inc Div Howden Gyrol Fluid Drives

No interchangeability data on file.

Other items in FSC 4420 — Heat Exchangers and Steam Condensers

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

4420-00-003-2812

CORE ASSEMBLY,FLUID HEATER,INDUS

4420-00-004-1071

4420-00-004-1071 · Item name not on file

4420-00-004-1072

4420-00-004-1072 · Item name not on file

4420-00-004-1073

4420-00-004-1073 · Item name not on file

4420-00-004-1074

4420-00-004-1074 · Item name not on file

4420-00-004-3860

COOLER,FLUID,INDUSTRIAL

4420-00-004-5260

4420-00-004-5260 · Item name not on file

4420-00-005-2335

PURGE ORIFICE ASSEMBLY

Frequently Asked Questions

What is NSN 4420-01-010-8511?

NSN 4420-01-010-8511 is a Bonnet,heat Exchanger, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.

What are the specifications of 4420-01-010-8511?

Key specifications for 4420-01-010-8511: General Characteristics Item Description: QQ-C-390 CU NI ALLOY D5,90 DEG 4.000 IN. ID TOP INLET W/FLANGE 7.188 IN. OD,10.000 IN. ID HORIZONTAL BODY OUTLET W/FLANGE 13.500 IN. OD,45 DEG 4.500 IN. ID PLAIN FACE BOTTOM DRAIN,12 EQUALLY SPACED 0.688 IN. DIA MTG HOLES ON 12.375 IN. DIA BOLT CIRCLE IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 4420-01-010-8511 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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