PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

620-NBMeter,time Totalizing

Curtis Instruments, Inc. Dba Curtis Pmc Division · NSN 6645-00-015-6018 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-015-6018 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-015-6018. Primary manufacturer part number: 620-NB.
Features
  • Meter,time Totalizing — FSC 6645
  • Indicator Type: SCALE
  • Body Width: 0.300 INCHES NOMINAL IN
  • Current Type: AC
  • Inscription Background Color: BLACK
  • Inscription Color: WHITE
  • Voltage Rating: 115.0 VOLTS NOMINAL
  • Body Depth: 0.200 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-015-6018, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Curtis Instruments, Inc. Dba Curtis Pmc Division. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN6645-00-015-6018
Primary Part Number620-NB
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerCurtis Instruments, Inc. Dba Curtis Pmc Division
StatusACTIVE
Indicator TypeSCALE
Body Width0.300 INCHES NOMINAL IN
Current TypeAC
Inscription Background ColorBLACK
Inscription ColorWHITE
Voltage Rating115.0 VOLTS NOMINAL
Body Depth0.200 INCHES NOMINAL IN
Mounting MethodFLUSH
Scale Range+0.0 TO 5000.0 HOUR
Body Length1.600 INCHES NOMINAL IN
Movement TypeELECTROCHEMICAL
Unit TypeMOUNTED
Reset FeatureNOT PROVIDED
Terminal Quantity2
Hermetic ProtectionNOT PROVIDED
Terminal TypeSOLDER
Scale Smallest Increment250.00 HOURS
Operating Frequency50.0 HERTZ MINIMUM AND 2.4 KILOHERTZ MAXIMUM
Mounting ConfigurationTWO 0.125 IN. DIA MTG HOLES SPACED 1.320 IN. C TO C ONHORIZONTAL CENTER LINE IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
6645-00-115-5847 INTERCHANGEABLE
Meter,time Totalizing
6645-00-248-5429 INTERCHANGEABLE
Cell,indicating
6645-00-248-5431 INTERCHANGEABLE
Holder,indicator Cell
6645-00-442-0475 INTERCHANGEABLE
Meter,time Totalizing
6645-00-547-2176 INTERCHANGEABLE
Meter,time Totalizing
6645-00-762-6538 INTERCHANGEABLE
Meter,time Totalizing
6645-00-854-1080 INTERCHANGEABLE
Meter,time Totalizing
6645-01-082-0518 INTERCHANGEABLE
Meter,time Totalizing
6645-01-121-4584 INTERCHANGEABLE
Meter,time Totalizing
6645-01-166-1891MIS-22871 INTERCHANGEABLE
Indicator
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
620-NB Curtis Instruments, Inc. Dba Curtis Pmc Division (USA)
MIL-I-81219 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS90386-5H Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6645-00-115-5847INTERCHANGEABLE
METER,TIME TOTALIZING
6645-00-248-5429INTERCHANGEABLE
CELL,INDICATING
6645-00-248-5431INTERCHANGEABLE
HOLDER,INDICATOR CELL
6645-00-442-0475INTERCHANGEABLE
METER,TIME TOTALIZING
6645-00-547-2176INTERCHANGEABLE
METER,TIME TOTALIZING
6645-00-762-6538INTERCHANGEABLE
METER,TIME TOTALIZING
6645-00-854-1080INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-082-0518INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-121-4584INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-166-1891INTERCHANGEABLE
INDICATOR
MIS-22871
6645-01-336-5814INTERCHANGEABLE
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-00-015-6018?

NSN 6645-00-015-6018 is a Meter,time Totalizing, manufactured by Curtis Instruments, Inc. Dba Curtis Pmc Division, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-015-6018?

NSN 6645-00-015-6018 has 3 cross-referenced part numbers: 620-NB (Curtis Instruments, Inc. Dba Curtis Pmc Division), MIL-I-81219 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS90386-5H (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6645-00-015-6018?

There are 11 known substitutes for 6645-00-015-6018: 6645-00-115-5847, 6645-00-248-5429, 6645-00-248-5431 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 620-NB?

Key specifications for 620-NB: Indicator Type: SCALE; Body Width: 0.300 INCHES NOMINAL IN; Current Type: AC; Inscription Background Color: BLACK. 19 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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