PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17993Meter,electrical Frequency

Custom Metering Company Inc · NSN 6625-01-277-0690 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-277-0690 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-277-0690. Primary manufacturer part number: 17993.
Features
  • Meter,electrical Frequency — FSC 6625
  • Unable to Decode: UNABLE TO DECODE
  • Unable to Decode: UNABLE TO DECODE
  • Nuclear Hardness Critical Feature: NONHARDENED
  • Unable to Decode: UNABLE TO DECODE
  • Measurement Range: +55.0 TO 65.0 HERTZ SINGLE INDICATOR SINGLE RANGE
  • Unable to Decode: UNABLE TO DECODE
  • Unable to Decode: UNABLE TO DECODE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,electrical Frequency, cataloged under National Stock Number 6625-01-277-0690, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Custom Metering Company Inc. Government technical data includes 30 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-277-0690
Primary Part Number17993
Item NameMeter,electrical Frequency
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerCustom Metering Company Inc
StatusACTIVE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Nuclear Hardness Critical FeatureNONHARDENED
Unable to DecodeUNABLE TO DECODE
Measurement Range+55.0 TO 65.0 HERTZ SINGLE INDICATOR SINGLE RANGE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Scale Graduation TypeLINEAR SINGLE INDICATOR SINGLE RANGE
Unable to DecodeUNABLE TO DECODE AND UNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE AND UNABLE TO DECODE
Circuit Attachment Method and Quantity2 THREADED STUD
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Indicator TypeDIAL W/POINTER
Circuit Current for Which DesignedDC
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Unable to DecodeUNABLE TO DECODE
Dial Scale Marking ColorBLACK SINGLE INDICATOR SINGLE RANGE
Unable to DecodeUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeZN
Weight1.0300 lbs
Cube0.0521 cu ft
Verified Substitutes 4
6625-01-444-44185106199 ITEM 325 SUCCESSOR
Meter,electrical Frequency
Naval Sea Systems Command
3110-00-156-47121110378 INTERCHANGEABLE
Bearing,ball,annular
Westinghouse Electric Corp
3455-00-238-7664 INTERCHANGEABLE
Cutter,milling,involute Gear
3020-00-623-004417993-00000 INTERCHANGEABLE
Gear,spur
Sigma Tek, Inc.
Cross-Reference Index
Part NumberManufacturer
17993 PRIMARY Custom Metering Company Inc (USA)
17993 Metermaster Inc (USA)
17993 Transcat, Inc. (USA)
Related Parts
6625-01-444-4418SUCCESSOR
METER,ELECTRICAL FREQUENCY
5106199 ITEM 325
3110-00-156-4712INTERCHANGEABLE
BEARING,BALL,ANNULAR
1110378
3455-00-238-7664INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
3020-00-623-0044INTERCHANGEABLE
GEAR,SPUR
17993-00000

Frequently Asked Questions

What is NSN 6625-01-277-0690?

NSN 6625-01-277-0690 is a Meter,electrical Frequency, manufactured by Custom Metering Company Inc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-277-0690?

NSN 6625-01-277-0690 has 3 cross-referenced part numbers: 17993 (Custom Metering Company Inc), 17993 (Metermaster Inc), 17993 (Transcat, Inc.).

What NSN replaces 6625-01-277-0690?

There are 4 known substitutes for 6625-01-277-0690: 6625-01-444-4418, 3110-00-156-4712, 3455-00-238-7664 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 17993?

Key specifications for 17993: Unable to Decode: UNABLE TO DECODE; Unable to Decode: UNABLE TO DECODE; Nuclear Hardness Critical Feature: NONHARDENED; Unable to Decode: UNABLE TO DECODE. 30 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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