NSN 6685-01-641-0318 · NIIN 016410318 · Part number BY12YPT4LW
Ashcroft Inc Dba Heise · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 049X3
Government record, cited
NSN 6685-01-641-0318 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-641-0318. Manufacturer of record part number: BY12YPT4LW.
Also searched as6685-01-641-0318 ·
6685016410318 ·
NIIN 016410318 ·
01-641-0318 ·
FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 049X3 · BY12YPT4LW
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: BY12YPT4LW
Manufacturer: Ashcroft Inc Dba Heise
General Description
The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-641-0318, 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 Ashcroft Inc Dba Heise. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
6685-01-641-0318
Primary Part Number
BY12YPT4LW
Item Name
Gage,pressure,dial Indicating
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer
Ashcroft Inc Dba Heise
Status
ACTIVE
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 6685-01-641-0318?
NSN 6685-01-641-0318 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What part numbers are listed for NSN 6685-01-641-0318?
NSN 6685-01-641-0318 has 1 manufacturer part number on file: BY12YPT4LW (Ashcroft Inc Dba Heise).
What are the specifications of BY12YPT4LW?
Key specifications for BY12YPT4LW: Overall Height: 2.4375 INCHES NOMINAL IN; Overall Length: 3.3750 INCHES NOMINAL IN; Special Features: 0-3000 PSI AND 0-21000 KPA. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-641-0318 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.