PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

447-04Gauge Site Glass

Ernst Flow Industries Llc Div Ernst Flow Industries · NSN 6685-01-630-5459 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-630-5459 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-630-5459. Primary manufacturer part number: 447-04.
Features
  • Gauge Site Glass — FSC 6685
  • 1 verified cross-reference
  • Primary manufacturer: Ernst Flow Industries Llc Div Ernst Flow Industries
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Gauge Site Glass, cataloged under National Stock Number 6685-01-630-5459, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ernst Flow Industries Llc Div Ernst Flow Industries. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-630-5459
Primary Part Number447-04
Item NameGauge Site Glass
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerErnst Flow Industries Llc Div Ernst Flow Industries
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4130-01-302-6995 INTERCHANGEABLE
Heating Element,electrical,immer
5120-01-398-9223J1230-T500 INTERCHANGEABLE
Wrench,box and Open End,combinat
The Stanley Works Dba Stanley Proto
7520-01-566-86477520-00-NIB-1993 INTERCHANGEABLE
Stapler,paper Fastening,office
National Industries for the Blind
5315-01-626-927544704 INTERCHANGEABLE
Pin,shoulder,headless
Moog Inc.
Cross-Reference Index
Part NumberManufacturer
447-04 PRIMARY Ernst Flow Industries Llc Div Ernst Flow Industries (USA)
Related Parts
4130-01-302-6995INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,IMMER
5120-01-398-9223INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
J1230-T500
7520-01-566-8647INTERCHANGEABLE
STAPLER,PAPER FASTENING,OFFICE
7520-00-NIB-1993
5315-01-626-9275INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
44704

Frequently Asked Questions

What is NSN 6685-01-630-5459?

NSN 6685-01-630-5459 is a Gauge Site Glass, manufactured by Ernst Flow Industries Llc Div Ernst Flow Industries, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-630-5459?

NSN 6685-01-630-5459 has 1 cross-referenced part number: 447-04 (Ernst Flow Industries Llc Div Ernst Flow Industries).

What NSN replaces 6685-01-630-5459?

There are 4 known substitutes for 6685-01-630-5459: 4130-01-302-6995, 5120-01-398-9223, 7520-01-566-8647 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 447-04?

Key specifications for 447-04: Special Features: 1/2 INCH NPT,MATERIAL: BODY 316 STAINLESS STEEL,GLASS PACKING:VITON,STEMPACKING:POLYTETRAFLUOROETHYLENE,MAX PRESSURE/TEMP:300/100F IN; Part Name Assigned by Controlling Agency: TUBULAR GAUGE VALVE. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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