PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25-442Bulkhead Union

Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc · NSN 6685-01-052-7480 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-052-7480 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-052-7480. Primary manufacturer part number: 25-442.
Features
  • Bulkhead Union — FSC 6685
  • 2 verified cross-references
  • Primary manufacturer: Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Bulkhead Union, cataloged under National Stock Number 6685-01-052-7480, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBulkhead Union
FSC / FSG6685 — No Item Name Available (FSG 66)
ManufacturersGe Ruska Instrument Corporation Div Ge Sensing Solutions Inc (CAGE 96116); Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (CAGE 28968)
Technical Specifications
ParameterValue
NSN6685-01-052-7480
Primary Part Number25-442
Item NameBulkhead Union
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerGe Ruska Instrument Corporation Div Ge Sensing Solutions Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5133-00-228-1382 INTERCHANGEABLE
Drill,twist
4710-01-186-26708J4984 INTERCHANGEABLE
Tube Assembly,metal
Caterpillar Inc Div Caterpillar Defense
5935-01-326-561425442 INTERCHANGEABLE
Connector,receptacle,electrical
Technical Services Laboratory, Inc. Dba Technical Services Laboratory Inc
6530-01-586-35292544-2 INTERCHANGEABLE
Gasket Yoke,oxygen Generator
On Site Gas Systems Inc
Cross-Reference Index
Part NumberManufacturer
25-442 PRIMARY Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc (USA)
4BUAN4 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
Related Parts
5133-00-228-1382INTERCHANGEABLE
DRILL,TWIST
4710-01-186-2670INTERCHANGEABLE
TUBE ASSEMBLY,METAL
8J4984
5935-01-326-5614INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
25442
6530-01-586-3529INTERCHANGEABLE
GASKET YOKE,OXYGEN GENERATOR
2544-2

Frequently Asked Questions

What is NSN 6685-01-052-7480?

NSN 6685-01-052-7480 is a Bulkhead Union, manufactured by Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-052-7480?

NSN 6685-01-052-7480 has 2 cross-referenced part numbers: 25-442 (Ge Ruska Instrument Corporation Div Ge Sensing Solutions Inc), 4BUAN4 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).

What NSN replaces 6685-01-052-7480?

There are 4 known substitutes for 6685-01-052-7480: 5133-00-228-1382, 4710-01-186-2670, 5935-01-326-5614 and 1 more. Verify interchangeability with system specifications before substitution.

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