PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

R478Gear Assembly

Name: R478
SKU: 6660-00-498-9684

Simplex Time Recorder Llc · NSN 6660-00-498-9684 · FSC 6660 · No Item Name Available

Verified by PartsTable

NSN 6660-00-498-9684 — this item is cataloged by the U.S. Government under National Stock Number 6660-00-498-9684. Primary manufacturer part number: R478.

6660-00-498-9684 — No Item Name Available illustration

Features

Gear Assembly — FSC 6660
3 verified cross-references
Primary manufacturer: Simplex Time Recorder Llc

Applications

Power transmission and speed reduction
Rotary motion transfer
Torque multiplication

General Description

The Gear Assembly, cataloged under National Stock Number 6660-00-498-9684, is classified within Federal Supply Class 6660 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Simplex Time Recorder Llc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts

Item Name	Gear Assembly
FSC / FSG	6660 — No Item Name Available (FSG 66)
Manufacturers	Simplex Time Recorder Llc (CAGE 54978); Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (CAGE 80063); Viking Technologies, Ltd. (CAGE 71313)

Technical Specifications

Parameter	Value
NSN	6660-00-498-9684
Primary Part Number	R478
Item Name	Gear Assembly
FSC / FSG	6660 / 66 — No Item Name Available
Manufacturer	Simplex Time Recorder Llc
Status	CANCELLED

Lifecycle & Compliance

Acquisition Status	CANCELLED
HAZMAT	No

⇄ Verified Substitutes 5

5940-00-269-853210-402-3 INTERCHANGEABLE

Terminal,stud

Concord Electronics, Inc.

6605-00-413-7063104023 INTERCHANGEABLE

Arm,steering Swivel

Northrop Grumman Systems Corporation

5340-00-478-5743CA368-8-70DUR0 INTERCHANGEABLE

Bumper

Bridgestone Americas Tire Operations, Llc

3110-00-856-0781 INTERCHANGEABLE

Bearing,roller,tapered

4930-01-509-4090104023 INTERCHANGEABLE

Parts Kit,airline Lubricator

Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division

Cross-Reference Index

Part Number	Manufacturer
R478 PRIMARY	Simplex Time Recorder Llc (USA)
SCB98652REVC	Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
104023	Viking Technologies, Ltd. (USA)

Related Parts

5940-00-269-8532INTERCHANGEABLE

TERMINAL,STUD

10-402-3

6605-00-413-7063INTERCHANGEABLE

ARM,STEERING SWIVEL

104023

5340-00-478-5743INTERCHANGEABLE

BUMPER

CA368-8-70DUR0

3110-00-856-0781INTERCHANGEABLE

BEARING,ROLLER,TAPERED

4930-01-509-4090INTERCHANGEABLE

PARTS KIT,AIRLINE LUBRICATOR

104023

Frequently Asked Questions

What is NSN 6660-00-498-9684?

NSN 6660-00-498-9684 is a Gear Assembly, manufactured by Simplex Time Recorder Llc, classified under FSC 6660 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6660-00-498-9684?

NSN 6660-00-498-9684 has 3 cross-referenced part numbers: R478 (Simplex Time Recorder Llc), SCB98652REVC (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 104023 (Viking Technologies, Ltd.).

What NSN replaces 6660-00-498-9684?

There are 5 known substitutes for 6660-00-498-9684: 5940-00-269-8532, 6605-00-413-7063, 5340-00-478-5743 and 2 more. Verify interchangeability with system specifications before substitution.

Is NSN 6660-00-498-9684 still in active supply?

NSN 6660-00-498-9684 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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

PartsTable Design LLC · partstable.com