PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4122-2Timer,interval

Radeco, Inc. Dba Radeco Inc · NSN 6645-01-391-9820 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-391-9820 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-391-9820. Primary manufacturer part number: 4122-2.
Features
  • Timer,interval — FSC 6645
  • 2 verified cross-references
  • Primary manufacturer: Radeco, Inc. Dba Radeco Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Timer,interval, cataloged under National Stock Number 6645-01-391-9820, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Radeco, Inc. Dba Radeco 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.

Technical Specifications
ParameterValue
NSN6645-01-391-9820
Primary Part Number4122-2
Item NameTimer,interval
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerRadeco, Inc. Dba Radeco Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5133-00-228-1400 INTERCHANGEABLE
Drill,twist
5962-01-088-949241222 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
6515-01-478-229041222 INTERCHANGEABLE
Support,knee
Bioskin, Llc
5925-01-533-050742702 INTERCHANGEABLE
Circuit Breaker
Westerbeke Corporation
Cross-Reference Index
Part NumberManufacturer
4122-2 PRIMARY Radeco, Inc. Dba Radeco Inc (USA)
4122-2 Leidos, Inc. (USA)
Related Parts
5133-00-228-1400INTERCHANGEABLE
DRILL,TWIST
5962-01-088-9492INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
41222
6515-01-478-2290INTERCHANGEABLE
SUPPORT,KNEE
41222
5925-01-533-0507INTERCHANGEABLE
CIRCUIT BREAKER
42702

Frequently Asked Questions

What is NSN 6645-01-391-9820?

NSN 6645-01-391-9820 is a Timer,interval, manufactured by Radeco, Inc. Dba Radeco Inc, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-01-391-9820?

NSN 6645-01-391-9820 has 2 cross-referenced part numbers: 4122-2 (Radeco, Inc. Dba Radeco Inc), 4122-2 (Leidos, Inc.).

What NSN replaces 6645-01-391-9820?

There are 4 known substitutes for 6645-01-391-9820: 5133-00-228-1400, 5962-01-088-9492, 6515-01-478-2290 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4122-2?

Key specifications for 4122-2: End Item Identification: HD-1151A/PD, AIR SAMPLER, BATTERYOPERATED A. 1 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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