PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1559C4-06Indicator,electrical Tachometer

Elbitamerica, Inc. · NSN 6620-00-556-1976 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-00-556-1976 — this item is cataloged by the U.S. Government under National Stock Number 6620-00-556-1976. Primary manufacturer part number: 1559C4-06.
Features
  • Indicator,electrical Tachometer — FSC 6620
  • Pointer Type: INDICATING SINGLE POINTER
  • Electrical Connection Identifying Number: MS33678-10SL-3P
  • Presentation Type: DIAL
  • Individual Marking: PERCENT RPM
  • Electrical Connection Quantity: 1
  • Supplementary Features: TECH ORDERS 1C-135(K)-4 FIG 584 AND 5E6-2-23-4
  • Scale Range: +0.1 TO 110.0 PERCENT REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,electrical Tachometer, cataloged under National Stock Number 6620-00-556-1976, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Elbitamerica, Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN6620-00-556-1976
Primary Part Number1559C4-06
Item NameIndicator,electrical Tachometer
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerElbitamerica, Inc.
StatusACTIVE
Pointer TypeINDICATING SINGLE POINTER
Electrical Connection Identifying NumberMS33678-10SL-3P
Presentation TypeDIAL
Individual MarkingPERCENT RPM
Electrical Connection Quantity1
Supplementary FeaturesTECH ORDERS 1C-135(K)-4 FIG 584 AND 5E6-2-23-4
Scale Range+0.1 TO 110.0 PERCENT REVOLUTIONS PER MINUTE SINGLE INDICATOR SINGLE SCALE
Diameter2.000 INCHES NOMINAL IN
Contact Quantity3
Contact TypePIN
Current TypeAC
Length5.000 INCHES NOMINAL IN
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.
6620-00-557-3023 INTERCHANGEABLE
Indicator,electrical Tachometer
6620-00-621-01438DJ81CAA1 INTERCHANGEABLE
Indicator,electrical Tachometer
Ametek Inc Div Aerospace and Defense
6620-00-959-661434102C1C4-1C1 INTERCHANGEABLE
Indicator,electrical Tachometer
Honeywell International Inc. Dba Honeywell International
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
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
1559C4-06 PRIMARY Elbitamerica, Inc. (USA)
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6620-00-526-5003INTERCHANGEABLE
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1559-4-03
6620-00-526-6627INTERCHANGEABLE
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1560U4-03
6620-00-557-3023INTERCHANGEABLE
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6620-00-621-0143INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
8DJ81CAA1
6620-00-959-6614INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
34102C1C4-1C1
6620-00-969-3972INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
8DJ81CAA2
6620-01-157-9266INTERCHANGEABLE
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8DJ81CBD4
6620-01-157-9267INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
3571261-8102
6620-01-159-4330INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
3571281-8102
6620-01-191-9514INTERCHANGEABLE
INDICATOR,ELECTRICAL TACHOMETER
100-0034-11

Frequently Asked Questions

What is NSN 6620-00-556-1976?

NSN 6620-00-556-1976 is a Indicator,electrical Tachometer, manufactured by Elbitamerica, Inc., classified under FSC 6620 (No Item Name Available). Status: active.

What are the part numbers for NSN 6620-00-556-1976?

NSN 6620-00-556-1976 has 3 cross-referenced part numbers: 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), 1559C4-06 (Elbitamerica, Inc.).

What NSN replaces 6620-00-556-1976?

There are 12 known substitutes for 6620-00-556-1976: 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 1559C4-06?

Key specifications for 1559C4-06: Part Name Assigned by Controlling Agency: PERCENT RPM ELECTRIC TACHOMETER INDICATOR; Pointer Type: INDICATING SINGLE POINTER; Electrical Connection Identifying Number: MS33678-10SL-3P; Presentation Type: DIAL. 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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