NSN 6685-01-591-4340 · NIIN 015914340 · Part number 4000K721
Mcmaster-Carr Supply Co · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 39428
Government record, cited
NSN 6685-01-591-4340 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-591-4340. Manufacturer of record part number: 4000K721.
Also searched as6685-01-591-4340 ·
6685015914340 ·
NIIN 015914340 ·
01-591-4340 ·
FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 39428 · 4000K721
Scale Name for Which Pointer Is Designed: PRESSURE
Dial Size: 2.000
Connection Location: BOTTOM
Color: BLACK CASE
Pointer Color: BLACK
Identification
NSN: 6685-01-591-4340
NIIN: 015914340
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 4000K721
Manufacturer: Mcmaster-Carr Supply Co
General Description
The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-591-4340, 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 Mcmaster-Carr Supply Co. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 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
6685-01-591-4340
Primary Part Number
4000K721
Item Name
Gage,pressure,dial Indicating
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer
Mcmaster-Carr Supply Co
Status
ACTIVE
Scale Name
PRESSURE
Connection Type
EXTERNAL
Scale Name for Which Pointer Is Designed
PRESSURE
Dial Size
2.000
Connection Location
BOTTOM
Color
BLACK CASE
Pointer Color
BLACK
Surface Treatment
PAINT EPOXY CASE
Material
STEEL CASE
Connection Quantity
1
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6685-00-001-1475
6685-00-001-1475 · Item name not on file
6685-00-001-1503
CONTROL,TOTALIZER
6685-00-001-1643
6685-00-001-1643 · Item name not on file
6685-00-001-1711
GAGE,PRESSURE,DIAL INDICATING
6685-00-001-2099
6685-00-001-2099 · Item name not on file
6685-00-001-2100
6685-00-001-2100 · Item name not on file
6685-00-001-2101
6685-00-001-2101 · Item name not on file
6685-00-001-2102
6685-00-001-2102 · Item name not on file
Frequently Asked Questions
What is NSN 6685-01-591-4340?
NSN 6685-01-591-4340 is a Gage,pressure,dial Indicating, manufactured by Mcmaster-Carr Supply Co, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What part numbers are listed for NSN 6685-01-591-4340?
NSN 6685-01-591-4340 has 1 manufacturer part number on file: 4000K721 (Mcmaster-Carr Supply Co).
What are the specifications of 4000K721?
Key specifications for 4000K721: Scale Name: PRESSURE; Connection Type: EXTERNAL; Scale Name for Which Pointer Is Designed: PRESSURE; Dial Size: 2.000. 10 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-591-4340 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.