PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52121Paper,filter

Mirion Technologies (canberra), Inc. · NSN 6640-01-689-8174 · FSC 6640 · No Item Name Available
Verified by PartsTable
NSN 6640-01-689-8174 — this item is cataloged by the U.S. Government under National Stock Number 6640-01-689-8174. Primary manufacturer part number: 52121.
Features
  • Paper,filter — FSC 6640
  • 2 verified cross-references
  • Primary manufacturer: Mirion Technologies (canberra), Inc.
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Paper,filter, cataloged under National Stock Number 6640-01-689-8174, is classified within Federal Supply Class 6640 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Mirion Technologies (canberra), Inc.. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6640-01-689-8174
Primary Part Number52121
Item NamePaper,filter
FSC / FSG6640 / 66 — No Item Name Available
ManufacturerMirion Technologies (canberra), Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4320-00-115-2459B2-2616 INTERCHANGEABLE
Bushing Shaft,pump
Hartford Compressors Inc
5325-00-227-198952121 INTERCHANGEABLE
Ring,retaining
Hamilton Sundstrand Corporation Dba Collins Aerospace
2910-00-287-85955254102 INTERCHANGEABLE
Nozzle,fuel Injection
Prestolite Electric Limited
2530-00-480-7456Y5DF267 INTERCHANGEABLE
Shaft Assembly Stee
Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
6532-01-350-182452018 INTERCHANGEABLE
Diaper,infant's
Kimberly-Clark Corporation Dba Cds Kimberly Clark
3455-01-359-090852121 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
5985-01-448-41061611AS427-1 INTERCHANGEABLE
Antenna
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8145-01-465-372956121-000 INTERCHANGEABLE
Storage Container,flexible
Aar Manufacturing, Inc. Dba Aar Mobility Systems
1095-01-536-74475212-1 INTERCHANGEABLE
Case,carbine
Michaels of Oregon Co Dba Uncle Mikes
5120-01-581-3289 INTERCHANGEABLE
Wrench,box and Open End,combinat
Cross-Reference Index
Part NumberManufacturer
52121 PRIMARY Mirion Technologies (canberra), Inc. (USA)
SR950394-1/MFP Mirion Technologies (canberra), Inc. (USA)
Related Parts
4320-00-115-2459INTERCHANGEABLE
BUSHING SHAFT,PUMP
B2-2616
5325-00-227-1989INTERCHANGEABLE
RING,RETAINING
52121
2910-00-287-8595INTERCHANGEABLE
NOZZLE,FUEL INJECTION
5254102
2530-00-480-7456INTERCHANGEABLE
SHAFT ASSEMBLY STEE
Y5DF267
6532-01-350-1824INTERCHANGEABLE
DIAPER,INFANT'S
52018
3455-01-359-0908INTERCHANGEABLE
CUTTER,MILLING,END
52121
5985-01-448-4106INTERCHANGEABLE
ANTENNA
1611AS427-1
8145-01-465-3729INTERCHANGEABLE
STORAGE CONTAINER,FLEXIBLE
56121-000
1095-01-536-7447INTERCHANGEABLE
CASE,CARBINE
5212-1
5120-01-581-3289INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
7045-01-674-0949INTERCHANGEABLE
APPLICATOR,DISPOSABLE ELECTRONIC
52121

Frequently Asked Questions

What is NSN 6640-01-689-8174?

NSN 6640-01-689-8174 is a Paper,filter, manufactured by Mirion Technologies (canberra), Inc., classified under FSC 6640 (No Item Name Available). Status: active.

What are the part numbers for NSN 6640-01-689-8174?

NSN 6640-01-689-8174 has 2 cross-referenced part numbers: 52121 (Mirion Technologies (canberra), Inc.), SR950394-1/MFP (Mirion Technologies (canberra), Inc.).

What NSN replaces 6640-01-689-8174?

There are 11 known substitutes for 6640-01-689-8174: 4320-00-115-2459, 5325-00-227-1989, 2910-00-287-8595 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52121?

Key specifications for 52121: End Item Identification: IM-275/FDR; Part Name Assigned by Controlling Agency: PAPER,FILTER. 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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