NSN 6685-01-162-6977 · NIIN 011626977 · Part number 51879
Hydranautics · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 52484
Government record, cited
NSN 6685-01-162-6977 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-162-6977. Manufacturer of record part number: 51879.
Also searched as6685-01-162-6977 ·
6685011626977 ·
NIIN 011626977 ·
01-162-6977 ·
FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 52484 · 51879 · 51879-1 · 13226E8409
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 51879
Manufacturer: Hydranautics
General Description
The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-162-6977, 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 Hydranautics. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6685-01-162-6977
Primary Part Number
51879
Item Name
Gage,pressure,dial Indicating
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer
Hydranautics
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5315-01-314-157651879POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
5430-01-439-387851879POSSIBLE MATCH
TANK,PRESSURE
Possible match (shared part number)Cooper Surgical
4730-01-452-05025187-9POSSIBLE MATCH
COUPLING HALF,QUICK DISCONNECT
Possible match (shared part number)Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division
5970-01-593-319751879POSSIBLE MATCH
INSULATION SLEEVING,ELECTRICAL
Possible match (shared part number)Lawson Products, Inc.
NSN 6685-01-162-6977 is a Gage,pressure,dial Indicating, manufactured by Hydranautics, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What part numbers are listed for NSN 6685-01-162-6977?
NSN 6685-01-162-6977 has 2 manufacturer part numbers on file: 51879 (Hydranautics), 51879-1 (Hydranautics).
What NSN replaces 6685-01-162-6977?
4 possible matches (shared part number, not a government interchangeability claim): 5315-01-314-1576, 5430-01-439-3878, 4730-01-452-0502. Verify interchangeability with system specifications before substitution.
What are the specifications of 51879?
Key specifications for 51879: Part Name Assigned by Controlling Agency: GAGE,PRESSURE,DIAL INDICATING,ARBITRARY SCALE. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-162-6977 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.