PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B120-3Belts,v,matched Set

Gates Corporation · NSN 3030-00-837-2804 · FSC 3030 · No Item Name Available
Verified by PartsTable
NSN 3030-00-837-2804 — this item is cataloged by the U.S. Government under National Stock Number 3030-00-837-2804. Primary manufacturer part number: B120-3.
Features
  • Belts,v,matched Set — FSC 3030
  • Cross-Sectional Size: B
  • Belt Quantity: 3
  • Style Designator: PLAIN
  • Material: FIBER AND RUBBER BODY
  • Strengthening Feature: FIBER CORD
  • Nominal Pitch Length: 121.800 INCHES IN
  • Performance Type: STANDARD CAPACITY
Applications
  • Applications requiring Fiber and Rubber Body construction
General Description

The Belts,v,matched Set, cataloged under National Stock Number 3030-00-837-2804, is classified within Federal Supply Class 3030 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Gates Corporation. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3030-00-837-2804
Primary Part NumberB120-3
Item NameBelts,v,matched Set
FSC / FSG3030 / 30 — No Item Name Available
ManufacturerGates Corporation
StatusCANCELLED
Cross-Sectional SizeB
Belt Quantity3
Style DesignatorPLAIN
MaterialFIBER AND RUBBER BODY
Strengthening FeatureFIBER CORD
Nominal Pitch Length121.800 INCHES IN
Performance TypeSTANDARD CAPACITY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5945-00-258-7767715827-3 INTERCHANGEABLE
Relay,electromagnetic
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5961-00-932-0594B1203 INTERCHANGEABLE
Transistor
Warner and Swasey Co Sheffield Measurement Div Sub of Cross and Trecker Corp
7050-01-549-6759B1203 INTERCHANGEABLE
Modulezassemblyzzzz
Lockheed Martin Corporation Div Rms - Manassas
Cross-Reference Index
Part NumberManufacturer
B120-3 Gates Corporation (USA)
MS39256-3B120 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
B120SET3 Boston Industrial Products Inc Sub of Dana Corp (USA)
Related Parts
5945-00-258-7767INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
715827-3
5961-00-932-0594INTERCHANGEABLE
TRANSISTOR
B1203
7050-01-549-6759INTERCHANGEABLE
MODULEZASSEMBLYZZZZ
B1203

Frequently Asked Questions

What is NSN 3030-00-837-2804?

NSN 3030-00-837-2804 is a Belts,v,matched Set, manufactured by Gates Corporation, classified under FSC 3030 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3030-00-837-2804?

NSN 3030-00-837-2804 has 3 cross-referenced part numbers: B120-3 (Gates Corporation), MS39256-3B120 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), B120SET3 (Boston Industrial Products Inc Sub of Dana Corp).

What NSN replaces 3030-00-837-2804?

There are 3 known substitutes for 3030-00-837-2804: 5945-00-258-7767, 5961-00-932-0594, 7050-01-549-6759. Verify interchangeability with system specifications before substitution.

What are the specifications of B120-3?

Key specifications for B120-3: Cross-Sectional Size: B; Belt Quantity: 3; Style Designator: PLAIN; Material: FIBER AND RUBBER BODY. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3030-00-837-2804 still in active supply?

NSN 3030-00-837-2804 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.
PartsTable Design LLC · partstable.com