PartsTable TECHNICAL DATA SHEET

NSN 3010-01-258-1009Government record, cited

Gear Assembly, Speed Decreaser3010-01-258-1009

NSN 3010-01-258-1009 · NIIN 012581009 · Part number 01-110-0002-4

Timken Gears & Services Inc. Div Philadelphia Gear · FSC 3010 — Torque Converters and Speed Changers · FSG 30 — Mechanical Power Transmission Equipment · CAGE 17454

Government record, cited

NSN 3010-01-258-1009 — this item is cataloged by the U.S. Government under National Stock Number 3010-01-258-1009. Manufacturer of record part number: 01-110-0002-4.

Also searched as 3010-01-258-1009 · 3010012581009 · NIIN 012581009 · 01-258-1009 · FSC 3010 Torque Converters and Speed Changers · CAGE 17454 · 01-110-0002-4

Nearby stock numbers ← 3010-01-257-8900 · 3010-01-258-2300 Bellows, Pressure →

Features

Gear Assembly,speed Decreaser — FSC 3010
1 manufacturer part number on file
Manufacturer of record: Timken Gears & Services Inc. Div Philadelphia Gear

Identification

NSN: 3010-01-258-1009
NIIN: 012581009
FSC: 3010 — Torque Converters and Speed Changers
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 01-110-0002-4
Manufacturer: Timken Gears & Services Inc. Div Philadelphia Gear

General Description

The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-258-1009, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Gear Assembly,speed Decreaser
FSC / FSG	3010 — Torque Converters and Speed Changers (FSG 30)
Manufacturers	Timken Gears & Services Inc. Div Philadelphia Gear (CAGE 17454)

Technical Specifications

Parameter	Value
NSN	3010-01-258-1009
Primary Part Number	01-110-0002-4
Item Name	Gear Assembly,speed Decreaser
FSC / FSG	3010 / 30 — Torque Converters and Speed Changers
Manufacturer	Timken Gears & Services Inc. Div Philadelphia Gear
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

⇄ Related Items 3

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

3020-01-258-694701-110-0002-4 ITEM 14 POSSIBLE MATCH

GEAR,SPUR

Possible match (shared part number)Timken Gears & Services Inc. Div Philadelphia Gear

3020-01-258-694801-110-0002-4 ITEM 15 POSSIBLE MATCH

GEAR,SPUR

Possible match (shared part number)Timken Gears & Services Inc. Div Philadelphia Gear

3020-01-258-694901-110-0002-4 ITEM 16 POSSIBLE MATCH

GEAR,SPUR

Possible match (shared part number)Timken Gears & Services Inc. Div Philadelphia Gear

Cross-Reference Index

Part Number	Manufacturer
01-110-0002-4 PRIMARY	Timken Gears & Services Inc. Div Philadelphia Gear (USA)

Related Parts

3020-01-258-6947POSSIBLE MATCH

GEAR,SPUR

01-110-0002-4 ITEM 14

3020-01-258-6948POSSIBLE MATCH

GEAR,SPUR

01-110-0002-4 ITEM 15

3020-01-258-6949POSSIBLE MATCH

GEAR,SPUR

01-110-0002-4 ITEM 16

Frequently Asked Questions

What is NSN 3010-01-258-1009?

NSN 3010-01-258-1009 is a Gear Assembly,speed Decreaser, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.

What part numbers are listed for NSN 3010-01-258-1009?

NSN 3010-01-258-1009 has 1 manufacturer part number on file: 01-110-0002-4 (Timken Gears & Services Inc. Div Philadelphia Gear).

What NSN replaces 3010-01-258-1009?

3 possible matches (shared part number, not a government interchangeability claim): 3020-01-258-6947, 3020-01-258-6948, 3020-01-258-6949. Verify interchangeability with system specifications before substitution.

Is NSN 3010-01-258-1009 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.

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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