PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

4957Lever,finger,clutch

Name: 4957
SKU: 2520-00-447-8867

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 2520-00-447-8867 · FSC 2520 · No Item Name Available

Verified by PartsTable

NSN 2520-00-447-8867 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-447-8867. Primary manufacturer part number: 4957.

2520-00-447-8867 — No Item Name Available illustration

Features

Lever,finger,clutch — FSC 2520
1 verified cross-reference
Primary manufacturer: Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic

Applications

Industrial maintenance and repair
Government and military logistics
Equipment overhaul and refurbishment

General Description

The Lever,finger,clutch, cataloged under National Stock Number 2520-00-447-8867, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts

Item Name	Lever,finger,clutch
FSC / FSG	2520 — No Item Name Available (FSG 25)
Manufacturers	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208)

Technical Specifications

Parameter	Value
NSN	2520-00-447-8867
Primary Part Number	4957
Item Name	Lever,finger,clutch
FSC / FSG	2520 / 25 — No Item Name Available
Manufacturer	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No

⇄ Verified Substitutes 9

3030-00-081-543612-5X1500N275 INTERCHANGEABLE

Belt,v

Daimler Truck North America Llc

5935-00-153-436631-2226-1051 INTERCHANGEABLE

Connector,plug,electrical

Amphenol Corporation Div Amphenol Rf

2910-00-226-9244 INTERCHANGEABLE

Carburetor,float

6145-00-835-7109 INTERCHANGEABLE

Wire,electrical

4920-01-075-0588GS15944-1 INTERCHANGEABLE

Fixture,engine Maintenance,aircr

Hamilton Sundstrand Corporation Dba Collins Aerospace

6515-01-438-91824975 INTERCHANGEABLE

Heel Wedge,footwear

Viscolas Inc

5305-01-497-8102 INTERCHANGEABLE

Screw,cap,socket Head

4310-01-498-79424957 INTERCHANGEABLE

Guard,air Compressor

Amw Cuyuna Engine Co. Inc Dba Two Stroke International

5330-01-729-52704957 INTERCHANGEABLE

Tape,cloth,metal Seam Sealing

3m Company

Cross-Reference Index

Part Number	Manufacturer
4957 PRIMARY	Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)

Related Parts

3030-00-081-5436INTERCHANGEABLE

BELT,V

12-5X1500N275

5935-00-153-4366INTERCHANGEABLE

CONNECTOR,PLUG,ELECTRICAL

31-2226-1051

2910-00-226-9244INTERCHANGEABLE

CARBURETOR,FLOAT

6145-00-835-7109INTERCHANGEABLE

WIRE,ELECTRICAL

4920-01-075-0588INTERCHANGEABLE

FIXTURE,ENGINE MAINTENANCE,AIRCR

GS15944-1

6515-01-438-9182INTERCHANGEABLE

HEEL WEDGE,FOOTWEAR

4975

5305-01-497-8102INTERCHANGEABLE

SCREW,CAP,SOCKET HEAD

4310-01-498-7942INTERCHANGEABLE

GUARD,AIR COMPRESSOR

4957

5330-01-729-5270INTERCHANGEABLE

TAPE,CLOTH,METAL SEAM SEALING

4957

Frequently Asked Questions

What is NSN 2520-00-447-8867?

NSN 2520-00-447-8867 is a Lever,finger,clutch, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-447-8867?

NSN 2520-00-447-8867 has 1 cross-referenced part number: 4957 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 2520-00-447-8867?

There are 9 known substitutes for 2520-00-447-8867: 3030-00-081-5436, 5935-00-153-4366, 2910-00-226-9244 and 6 more. Verify interchangeability with system specifications before substitution.

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.

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