PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6646-2Take Up Roll Flange

Belfort Instrument Company · NSN 6660-01-106-1880 · FSC 6660 · No Item Name Available
Verified by PartsTable
NSN 6660-01-106-1880 — this item is cataloged by the U.S. Government under National Stock Number 6660-01-106-1880. Primary manufacturer part number: 6646-2.
Features
  • Take Up Roll Flange — FSC 6660
  • 2 verified cross-references
  • Primary manufacturer: Belfort Instrument Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Take Up Roll Flange, cataloged under National Stock Number 6660-01-106-1880, is classified within Federal Supply Class 6660 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Belfort Instrument Company. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTake Up Roll Flange
FSC / FSG6660 — No Item Name Available (FSG 66)
ManufacturersBelfort Instrument Company (CAGE 82205)
Technical Specifications
ParameterValue
NSN6660-01-106-1880
Primary Part Number6646-2
Item NameTake Up Roll Flange
FSC / FSG6660 / 66 — No Item Name Available
ManufacturerBelfort Instrument Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-100-06082X6611B INTERCHANGEABLE
Cup,tapered Roller Bearing
Napco International Llc Dba Napco International Inc
5330-00-752-999066462 INTERCHANGEABLE
Seal,plain
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
7320-00-799-0618205-1021 INTERCHANGEABLE
Bowl,mixing Machine
Franklin Machine Products Inc
5360-00-944-8108 INTERCHANGEABLE
Spring,helical,torsion
5330-01-090-936966462 INTERCHANGEABLE
Retainer,packing
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
Cross-Reference Index
Part NumberManufacturer
6646-2 PRIMARY Belfort Instrument Company (USA)
6646PT2 Belfort Instrument Company (USA)
Related Parts
3110-00-100-0608INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
2X6611B
5330-00-752-9990INTERCHANGEABLE
SEAL,PLAIN
66462
7320-00-799-0618INTERCHANGEABLE
BOWL,MIXING MACHINE
205-1021
5360-00-944-8108INTERCHANGEABLE
SPRING,HELICAL,TORSION
5330-01-090-9369INTERCHANGEABLE
RETAINER,PACKING
66462

Frequently Asked Questions

What is NSN 6660-01-106-1880?

NSN 6660-01-106-1880 is a Take Up Roll Flange, manufactured by Belfort Instrument Company, classified under FSC 6660 (No Item Name Available). Status: active.

What are the part numbers for NSN 6660-01-106-1880?

NSN 6660-01-106-1880 has 2 cross-referenced part numbers: 6646-2 (Belfort Instrument Company), 6646PT2 (Belfort Instrument Company).

What NSN replaces 6660-01-106-1880?

There are 5 known substitutes for 6660-01-106-1880: 3110-00-100-0608, 5330-00-752-9990, 7320-00-799-0618 and 2 more. Verify interchangeability with system specifications before substitution.

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