PartsTable TECHNICAL DATA SHEET

NSN 3020-01-666-0870Government record, cited

Pulley, Groove3020-01-666-0870

NSN 3020-01-666-0870 · NIIN 016660870

FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment

Government record, cited

Also searched as 3020-01-666-0870 · 3020016660870 · NIIN 016660870 · 01-666-0870 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain

Nearby stock numbers ← 3020-01-666-0583 Chain, Roller · 3020-01-666-0902 Guard, Mechanical Drive →

Features

Pulley,groove — FSC 3020
Criticality Code Justification: ZZZY
Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS

Identification

NSN: 3020-01-666-0870
NIIN: 016660870
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Pulley,groove, cataloged under National Stock Number 3020-01-666-0870, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3020-01-666-0870
Item Name	Pulley,groove
FSC / FSG	3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Status	ACTIVE
Criticality Code Justification	ZZZY
Reference Number Differentiating Characteristics	MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL F — Mutilate — Cut
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	Y

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
AK25 7/8	3/1 Design control — primary reference Martin Sprocket and Gear Inc

No interchangeability data on file.

Other items in FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3020-00-000-0091

GEAR,SPUR

3020-00-001-0027

3020-00-001-0027 · Item name not on file

3020-00-001-0028

3020-00-001-0028 · Item name not on file

3020-00-001-0063

3020-00-001-0063 · Item name not on file

3020-00-001-0064

3020-00-001-0064 · Item name not on file

3020-00-001-0066

3020-00-001-0066 · Item name not on file

3020-00-001-0071

3020-00-001-0071 · Item name not on file

3020-00-001-0072

3020-00-001-0072 · Item name not on file

Frequently Asked Questions

What is NSN 3020-01-666-0870?

NSN 3020-01-666-0870 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What are the specifications of 3020-01-666-0870?

Key specifications for 3020-01-666-0870: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-666-0870 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

What is the DEMIL code for NSN 3020-01-666-0870?

NSN 3020-01-666-0870 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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