PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34102C1C4-1C1Indicator,electrical Tachometer

Honeywell International Inc. Dba Honeywell International · NSN 6620-00-959-6614 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-00-959-6614 — this item is cataloged by the U.S. Government under National Stock Number 6620-00-959-6614. Primary manufacturer part number: 34102C1C4-1C1.
Features
  • Indicator,electrical Tachometer — FSC 6620
  • Electrical Connection Identifying Number: MS33678-10SL-3P
  • Pointer Type: INDICATING SINGLE POINTER
  • Electrical Connection Quantity: 1
  • Scale Range: +0.1 TO 110.0 PERCENT REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE
  • Supplementary Features: TECH ORDER 1C-135(K)-4 FIG 584
  • Length: 5.000 INCHES NOMINAL IN
  • Diameter: 2.000 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,electrical Tachometer, cataloged under National Stock Number 6620-00-959-6614, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Honeywell International Inc. Dba Honeywell International. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6620-00-959-6614
Primary Part Number34102C1C4-1C1
Item NameIndicator,electrical Tachometer
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell International
StatusACTIVE
Electrical Connection Identifying NumberMS33678-10SL-3P
Pointer TypeINDICATING SINGLE POINTER
Electrical Connection Quantity1
Scale Range+0.1 TO 110.0 PERCENT REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE
Supplementary FeaturesTECH ORDER 1C-135(K)-4 FIG 584
Length5.000 INCHES NOMINAL IN
Diameter2.000 INCHES NOMINAL IN
Individual MarkingPERCENT RPM
Contact Quantity3
Current TypeAC
Contact TypePIN
Presentation TypeDIAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6620-00-515-45418DJ43AAM INTERCHANGEABLE
Indicator,electrical Tachometer
Ametek Inc Div Aerospace and Defense
6620-00-515-4542 INTERCHANGEABLE
Indicator,electrical Tachometer
6620-00-526-50031559-4-03 INTERCHANGEABLE
Indicator,electrical Tachometer
Elbitamerica, Inc.
6620-00-526-66271560U4-03 INTERCHANGEABLE
Indicator,electrical Tachometer
Elbitamerica, Inc.
6620-00-556-19761559C4-06 INTERCHANGEABLE
Indicator,electrical Tachometer
Elbitamerica, Inc.
6620-00-557-3023 INTERCHANGEABLE
Indicator,electrical Tachometer
6620-00-621-01438DJ81CAA1 INTERCHANGEABLE
Indicator,electrical Tachometer
Ametek Inc Div Aerospace and Defense
6620-00-969-39728DJ81CAA2 INTERCHANGEABLE
Indicator,electrical Tachometer
Ametek Inc Div Aerospace and Defense
6620-01-157-92668DJ81CBD4 INTERCHANGEABLE
Indicator,electrical Tachometer
Ametek Inc Div Aerospace and Defense
6620-01-157-92673571261-8102 INTERCHANGEABLE
Indicator,electrical Tachometer
Honeywell International Inc. Dba Honeywell International
Cross-Reference Index
Part NumberManufacturer
34102C1C4-1C1 PRIMARY Honeywell International Inc. Dba Honeywell International (USA)
6620PL1741749 Jednolity Indeks Materialowy - Uniform Material Index (POL)
34102C1C4-1C1 Honeywell Intl Inc Defense Avionics Systems (USA)
MU-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-I-25623 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
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8DJ81CAA2
6620-01-157-9266INTERCHANGEABLE
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8DJ81CBD4
6620-01-157-9267INTERCHANGEABLE
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3571261-8102
6620-01-159-4330INTERCHANGEABLE
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6620-01-191-9514INTERCHANGEABLE
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100-0034-11

Frequently Asked Questions

What is NSN 6620-00-959-6614?

NSN 6620-00-959-6614 is a Indicator,electrical Tachometer, manufactured by Honeywell International Inc. Dba Honeywell International, classified under FSC 6620 (No Item Name Available). Status: active.

What are the part numbers for NSN 6620-00-959-6614?

NSN 6620-00-959-6614 has 5 cross-referenced part numbers: 34102C1C4-1C1 (Honeywell International Inc. Dba Honeywell International), 6620PL1741749 (Jednolity Indeks Materialowy - Uniform Material Index), 34102C1C4-1C1 (Honeywell Intl Inc Defense Avionics Systems), MU-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-I-25623 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6620-00-959-6614?

There are 12 known substitutes for 6620-00-959-6614: 6620-00-515-4541, 6620-00-515-4542, 6620-00-526-5003 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 34102C1C4-1C1?

Key specifications for 34102C1C4-1C1: Special Features: INDICATOR INCLUDES SUBDIAL SCALE WITH RANGE 0 TO 10% RPM; THE MAJOR SCALE HAS RANGE 0 TO 100% RPM; TOTAL SCALE RANGE OF INDICATOR 0 TO 110% RPM; HERMETICALLY SEALED CASE PER MS33639; TACH DESIGNED FOR USE WITH A TWO POLE TACH GENERATOR CONFORMING TO MIL-G-9398;WEIGHT APPROXIMATELY 1 LB; DIAL IS SCREENED WITH 100 PERCENT AT 9 O'CLOCK; DULL BLACK BACKGROUND PER FED-STD-595 LBS; End Item Identification: KC-135E, B52 AND C-130 ACFT; Electrical Connection Identifying Number: MS33678-10SL-3P; Pointer Type: INDICATING SINGLE POINTER. 15 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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