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FSG 66 - Instruments and Laboratory Equipment
FSC 6620 - Engine Instruments
NSN 6620-00-022-8056

6620-00-022-8056

NIIN 00-022-8056 - Electrical Tachometer Indicator

NSN 6620-00-022-8056 Classification

An instrument which displays, in units of revolutions per minute, the transmitted rotational speed of a shaft for a specified elapsed time.

ms33678-14s5p electrical connection identifying number, ac current type, pin contact type, 5 contact quantity, 2.000 inches nominal diameter

National Stock Number: 6620-00-022-8056
Federal Supply Group: 66 - Instruments and Laboratory Equipment
Federal Supply Classification: 6620 - Engine Instruments
National Item Identification Number: 00-022-8056
Item Name Code: 08260
Assigned Date: Wed, Jun 7, 1972
Schedule B Code: 9029900000
Requires Demilitarization: DEMIL/MLI

NSN 6620-00-022-8056 Specification

Set by the OEM (See RNCC code 3)

Contact Quantity: 5
Contact Type: pin
Current Type: ac
Diameter: 2.000 inches nominal
Electrical Connection Identifying Number: ms33678-14s5p
Electrical Connection Quantity: 1
Individual Marking: percent rpm
Length: 4.625 inches nominal
Part Name Assigned By Controlling Agency: tachometer indicator
Mounting Facility Type And Quantity: 1 clamp
Pointer Type: unable to decode
Presentation Type: dial
Scale Range: unable to decode
Special Features: includes subdial 0-10% rpm; main scale reads 0-100% rpm; case per ms33639; hermetically sealed and integrally lighted; lighting per mil-i-27160
Supplementary Features: tech order 5e6-2-33-4

Quality Commitment

Quality, Safety, and Compliance in Every Supply Requirement

Serving aerospace, military, MRO, and industrial customers with quality-first sourcing, inspected products, audited supply chain processes, and compliance-focused support.

AS9120 Certified

Audited Supply Chain

ITAR Registered

DDTC Registered

HAZMAT Certified

Customer Service Objectives

Every Product 100% Inspected

Every product is 100% inspected to support quality assurance, safety, documentation, and dependable delivery for critical aerospace, defense, MRO, and industrial sourcing requirements.

NSN 6620-00-022-8056 Material

Hazmat, Precious Metals, Criticality, Environment, and ESD

(PMIC) Precious Metals Indicator

Item does not contain precious metal.

What does the A code means?

Precious metals indicator code (pmic): this code is to identify items that have precious metals as part of their content. Precious metals are those metals generally considered to be uncommon and highly valuable which are relatively superior in certain properties such as resistance to corrosion and electrical conductivity. The precious metals recovery program for the federal government encompasses gold, silver, platinum, and the platinum family which consists of palladium, iridium, rhodium, osmium, and ruthenium. See volume 10, table 160 and quick info on-line.

(HMIC) Hazardous Metal Indicator

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

What does the N code means?

Hazardous materials indicator code: a code established in the dlis total item record (tir) to identify to users of the federal catalog system all known or suspected hazardous items as defined by safety/health, transaction and/or environmental regulations, to serve as a flag that a procuring activity must acquire a material safety data sheet when a hazardous item is procured, and to inform federal catalog system users when more detailed information on an item is available in the hazardous material information system. See volume 10, table 179 and quick info on-line.

Criticality Code

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

What does the X code means?

Criticality code, federal item identification guide: a code which indicates when an item is technically critical, by reason of tolerance, fit, application, nuclear hardness properties or other characteristic which affects identification of the item. See volume 10, table 181 and quick info on-line.

Cross Reference Parts

Part numbers that meet the specification outlined on this page and set by the OEM

Part Number	CAGE	RNCC	RNVC	DAC	RNAAC	MSDS	SADC
3571281-6001	55972	5	9	5	MF	-	-
3571281-6001	96774	3	2	5	ZZ	-	-
ERU-6A/A	81349	4	1	4	MF	-	-
MIL-I-27202	81349	4	1	4	MF	-	-
MIL-I-27202	81349	4	1	4	ZZ	-	-
MIL-I-27202	81349	4	1	6	SB	-	-

Price Quote

Get an up to date pricing and availability quote for 6620-00-022-8056.

Stock Availability

This product is available in the following quantities and conditions:

(NS) New Surplus	1
(OH) Overhauled	1
(AR) As Removed	1
(NE) New Material	13
(SV) Serviceable	1
In Stock	17

Availability of this item was last updated 08/06/2026 08:08 PM EDT.

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