PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS39256-4B128Belts,v,matched Set

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 3030-00-640-4355 · FSC 3030 · No Item Name Available
Verified by PartsTable
NSN 3030-00-640-4355 — this item is cataloged by the U.S. Government under National Stock Number 3030-00-640-4355. Primary manufacturer part number: MS39256-4B128.
Features
  • Belts,v,matched Set — FSC 3030
  • Performance Type: STANDARD CAPACITY
  • Nominal Pitch Length: 129.800 INCHES IN
  • Material: FIBER AND RUBBER BODY
  • Belt Quantity: 4
  • Cross-Sectional Size: B
  • Style Designator: PLAIN
  • Strengthening Feature: FIBER CORD
Applications
  • Applications requiring Fiber and Rubber Body construction
General Description

The Belts,v,matched Set, cataloged under National Stock Number 3030-00-640-4355, is classified within Federal Supply Class 3030 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 15 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3030-00-640-4355
Primary Part NumberMS39256-4B128
Item NameBelts,v,matched Set
FSC / FSG3030 / 30 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Performance TypeSTANDARD CAPACITY
Nominal Pitch Length129.800 INCHES IN
MaterialFIBER AND RUBBER BODY
Belt Quantity4
Cross-Sectional SizeB
Style DesignatorPLAIN
Strengthening FeatureFIBER CORD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-004-334342420-251 INTERCHANGEABLE
Bearing,roller,needle
Jtekt Bearings North America Llc Div Kbna - Ord 1
5925-00-047-3859B12-8 INTERCHANGEABLE
Thermal Release,circuit Breaker
Schneider Electric Usa, Inc. Dba Schneider Electric
3110-00-120-3086B-128 INTERCHANGEABLE
Bearing,roller,needle
Jtekt Bearings North America Llc Div Kbna - Ord 1
3030-00-529-0295 INTERCHANGEABLE
Belt,v
3825-00-562-10084041250 INTERCHANGEABLE
Arm,clutch Rotation
Agco Corp Parts Opn
6625-00-643-8554901-052 INTERCHANGEABLE
Test Set,electron Tube
Hickok W O Mfg Co the
3110-00-690-184447-140-238 INTERCHANGEABLE
Bearing,roller,needle
Timken Aerospace, Inc Dba Torrington Product
5935-00-867-5702165021P1 INTERCHANGEABLE
Cover,electrical Connector
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5930-01-092-6234900193 INTERCHANGEABLE
Switch Assembly
Stanford Applied Engineering Inc
2940-01-239-611811-5703 INTERCHANGEABLE
Filter Element,fluid
Thermo King Corporation Dba Phoenix Global Distirbution.
Cross-Reference Index
Part NumberManufacturer
MS39256-4B128 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
B128MATCHEDSET0F4 Contitech Usa, Inc Dba Veyance Technologies (USA)
B128-4 Goodyear Tire and Rubber Co the (USA)
B128-4 Gates Corporation (USA)
B128MATCHEDSET0F4 Goodyear Tire and Rubber Co the (USA)
B128-4 Contitech Usa, Inc Dba Veyance Technologies (USA)
901052 Nordberg Inc (USA)
B128SET4 Pirelli Power Transmission Corp (USA)
B128-4 Carlisle Power Transmission Products Inc (USA)
B128 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
B128-4 Goodrich Corporation (USA)
A-A-52160/4B128 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
900193 Scott Huber Essick a Co of Figgie International Inc (USA)
B128 Parker-Hannifin Corporation Dba Industrial Hose Product Division Div Hose Products Division (USA)
B128-4 Hbd Industries, Inc Div Hbd/thermoid Inc (USA)
B128-4 Emerson Electric Co Browning Mfg Div (USA)
4B128 Dayco Products Llc (USA)
B128-4 Parker-Hannifin Corporation Dba Industrial Hose Product Division Div Hose Products Division (USA)
4GBB128 Emerson Electric Co Browning Mfg Div (USA)
A-A-52160 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
3110-00-004-3343INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
42420-251
5925-00-047-3859INTERCHANGEABLE
THERMAL RELEASE,CIRCUIT BREAKER
B12-8
3110-00-120-3086INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
B-128
3030-00-529-0295INTERCHANGEABLE
BELT,V
3825-00-562-1008INTERCHANGEABLE
ARM,CLUTCH ROTATION
4041250
6625-00-643-8554INTERCHANGEABLE
TEST SET,ELECTRON TUBE
901-052
3110-00-690-1844INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
47-140-238
5935-00-867-5702INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
165021P1
5930-01-092-6234INTERCHANGEABLE
SWITCH ASSEMBLY
900193
2940-01-239-6118INTERCHANGEABLE
FILTER ELEMENT,FLUID
11-5703
5310-01-256-9257INTERCHANGEABLE
WASHER,FLAT
B12-8
4820-01-279-3061INTERCHANGEABLE
PARTS KIT,LINEAR DIRECTIONAL CON
429168

Frequently Asked Questions

What is NSN 3030-00-640-4355?

NSN 3030-00-640-4355 is a Belts,v,matched Set, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3030 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3030-00-640-4355?

NSN 3030-00-640-4355 has 20 cross-referenced part numbers: MS39256-4B128 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), B128MATCHEDSET0F4 (Contitech Usa, Inc Dba Veyance Technologies), B128-4 (Goodyear Tire and Rubber Co the), B128-4 (Gates Corporation), B128MATCHEDSET0F4 (Goodyear Tire and Rubber Co the) and 15 more.

What NSN replaces 3030-00-640-4355?

There are 12 known substitutes for 3030-00-640-4355: 3110-00-004-3343, 5925-00-047-3859, 3110-00-120-3086 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS39256-4B128?

Key specifications for MS39256-4B128: Performance Type: STANDARD CAPACITY; Nominal Pitch Length: 129.800 INCHES IN; Material: FIBER AND RUBBER BODY; Belt Quantity: 4. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3030-00-640-4355 still in active supply?

NSN 3030-00-640-4355 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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