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NSN 3020-01-302-9040Government record, cited
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Chain, Roller3020-01-302-9040

NSN 3020-01-302-9040 · NIIN 013029040 · Part number 709-6129500 ITEM 48
Naval Sea Systems Command · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 53711
Government record, cited
NSN 3020-01-302-9040 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-302-9040. Manufacturer of record part number: 709-6129500 ITEM 48.
Also searched as  3020-01-302-9040 · 3020013029040 · NIIN 013029040 · 01-302-9040 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 53711 · 709-6129500 ITEM 48 · NO.25 BY 63 PITCHES · 87832-1651A ITEM 48 · 709-6129500
Nearby stock numbers  ·
Features
  • Chain,roller — FSC 3020
  • Second Chain Link Plate Nominal Thickness: 0.0300 INCHES IN
  • Second Chain Link Bushing Nominal Outside Diameter: 0.1300 INCHES IN
  • Pin Overall Length: 0.3700 INCHES NOMINAL IN
  • Second Chain Link Style: ROLLERLESS
  • Effective Length: 1.3125 FEET NOMINAL FT
  • Second Chain Link Nominal Width Between Plates: 0.1250 INCHES IN
  • First Chain Link Style: PIN
Identification
  • NSN: 3020-01-302-9040
  • NIIN: 013029040
  • FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: 709-6129500 ITEM 48
  • Manufacturer: Naval Sea Systems Command
General Description

The Chain,roller, cataloged under National Stock Number 3020-01-302-9040, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-302-9040
Primary Part Number709-6129500 ITEM 48
Item NameChain,roller
FSC / FSG3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
ManufacturerNaval Sea Systems Command
StatusACTIVE
Second Chain Link Plate Nominal Thickness0.0300 INCHES IN
Second Chain Link Bushing Nominal Outside Diameter0.1300 INCHES IN
Pin Overall Length0.3700 INCHES NOMINAL IN
Second Chain Link StyleROLLERLESS
Effective Length1.3125 FEET NOMINAL FT
Second Chain Link Nominal Width Between Plates0.1250 INCHES IN
First Chain Link StylePIN
Features ProvidedENDLESS CHAIN
First Chain Link Pin Nominal Diameter0.0900 INCHES IN
First Chain Link Plate Width0.205 INCHES NOMINAL IN
Pin Fastening MethodRIVETED
Second Chain Link Plate Width0.237 INCHES NOMINAL IN
First Chain Link Nominal Width Between Plates0.1850 INCHES IN
Link Row Quantity1
MaterialSTEEL
First Chain Link Plate Nominal Thickness0.0300 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-311-415387832-1651A ITEM 10 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-311-415487832-1651A ITEM 30 POSSIBLE MATCH
COUPLING,SHAFT,FLEXIBLE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-311-415587832-1651A ITEM 46 POSSIBLE MATCH
COUPLING,SHAFT,FLEXIBLE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-311-41938732-1651A ITEM 9 POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-311-419487832-1651A ITEM 11 POSSIBLE MATCH
SHAFT,STRAIGHT
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3010-01-311-419587832-1651A ITEM 28 POSSIBLE MATCH
COUPLING,SHAFT,RIGID
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-311-419787832-1651A ITEM 35 POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-311-422187832-1651A ITEM 5 POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-311-422287832-1651A ITEM 6 POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-311-56196129500-0001 POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
NO.25 BY 63 PITCHES Acme Chain (USA)
709-6129500 ITEM 48 PRIMARY Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
87832-1651A ITEM 48 5/9 Secondary reference
U.S. Government activity
709-6129500 D/9 Drawing number reference only
Naval Sea Systems Command
Related Parts
3040-01-311-4153POSSIBLE MATCH
SHAFT,SHOULDERED
87832-1651A ITEM 10
3010-01-311-4154POSSIBLE MATCH
COUPLING,SHAFT,FLEXIBLE
87832-1651A ITEM 30
3010-01-311-4155POSSIBLE MATCH
COUPLING,SHAFT,FLEXIBLE
87832-1651A ITEM 46
3040-01-311-4193POSSIBLE MATCH
SHAFT,STRAIGHT
8732-1651A ITEM 9
3040-01-311-4194POSSIBLE MATCH
SHAFT,STRAIGHT
87832-1651A ITEM 11
3010-01-311-4195POSSIBLE MATCH
COUPLING,SHAFT,RIGID
87832-1651A ITEM 28
3040-01-311-4197POSSIBLE MATCH
SHAFT,SHOULDERED
87832-1651A ITEM 35
3020-01-311-4221POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
87832-1651A ITEM 5
3020-01-311-4222POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
87832-1651A ITEM 6
3020-01-311-5619POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
6129500-0001
3020-01-311-5620POSSIBLE MATCH
GUARD,MECHANICAL DRIVE
6129500-0002

Frequently Asked Questions

What is NSN 3020-01-302-9040?

NSN 3020-01-302-9040 is a Chain,roller, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What part numbers are listed for NSN 3020-01-302-9040?

NSN 3020-01-302-9040 has 2 manufacturer part numbers on file: NO.25 BY 63 PITCHES (Acme Chain), 709-6129500 ITEM 48 (Naval Sea Systems Command).

What NSN replaces 3020-01-302-9040?

11 possible matches (shared part number, not a government interchangeability claim): 3040-01-311-4153, 3010-01-311-4154, 3010-01-311-4155. Verify interchangeability with system specifications before substitution.

What are the specifications of 709-6129500 ITEM 48?

Key specifications for 709-6129500 ITEM 48: Second Chain Link Plate Nominal Thickness: 0.0300 INCHES IN; Second Chain Link Bushing Nominal Outside Diameter: 0.1300 INCHES IN; Pin Overall Length: 0.3700 INCHES NOMINAL IN; Second Chain Link Style: ROLLERLESS. 16 specifications are documented in the U.S. Government catalog.

Is NSN 3020-01-302-9040 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.

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