Thermostat, Flow Control6685-01-677-1158

NSN 6685-01-677-1158 · NIIN 016771158 · Part number MX5021

Itw Gse Inc. · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 0SMN2

Government record, cited

NSN 6685-01-677-1158 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-677-1158. Manufacturer of record part number: MX5021.

Also searched as 6685-01-677-1158 · 6685016771158 · NIIN 016771158 · 01-677-1158 · FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 0SMN2 · MX5021

Nearby stock numbers ← 6685-01-677-1085 Gage, Pressure, Dial Indicating · 6685-01-677-2328 Indicator, Humidity, Plug →

Features

Thermostat,flow Control — FSC 6685
1 manufacturer part number on file
Manufacturer of record: Itw Gse Inc.

Identification

NSN: 6685-01-677-1158
NIIN: 016771158
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: MX5021
Manufacturer: Itw Gse Inc.

General Description

The Thermostat,flow Control, cataloged under National Stock Number 6685-01-677-1158, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Itw Gse Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Thermostat,flow Control
FSC / FSG	6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments (FSG 66)
Manufacturers	Itw Gse Inc. (CAGE 0SMN2)

Technical Specifications

Parameter	Value
NSN	6685-01-677-1158
Primary Part Number	MX5021
Item Name	Thermostat,flow Control
FSC / FSG	6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer	Itw Gse Inc.
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

6515-01-680-3139MX5021 POSSIBLE MATCH

CLOSURE DEVICE,VASCULAR

Possible match (shared part number)Cordis Us Corp Div Cordis Us

Cross-Reference Index

Part Number	Manufacturer
MX5021 PRIMARY	Itw Gse Inc. (USA)

Related Parts

6515-01-680-3139POSSIBLE MATCH

CLOSURE DEVICE,VASCULAR

MX5021

Frequently Asked Questions

What is NSN 6685-01-677-1158?

NSN 6685-01-677-1158 is a Thermostat,flow Control, manufactured by Itw Gse Inc., classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.

What part numbers are listed for NSN 6685-01-677-1158?

NSN 6685-01-677-1158 has 1 manufacturer part number on file: MX5021 (Itw Gse Inc.).

What NSN replaces 6685-01-677-1158?

1 possible match (shared part number, not a government interchangeability claim): 6515-01-680-3139. Verify interchangeability with system specifications before substitution.

Is NSN 6685-01-677-1158 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). 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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