PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A30165900-9Ring,piston

Rockford Powertrain Inc Div Powertrain Rockford, Inc. · NSN 4310-00-081-1559 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-081-1559 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-081-1559. Primary manufacturer part number: A30165900-9.
Features
  • Ring,piston — FSC 4310
  • Radial Wall Thickness: 0.1700 INCHES MINIMUM AND 0.1800 INCHES MAXIMUM IN
  • Material: STEEL COMP 8620 OVERALL
  • Joint Style: VERTICAL JOINT
  • Ring Style: CONCENTRIC
  • FSC Application Data: MARINETRANSMISSI0N,REVERSEANDREDUCTI0NGEAR
  • Standard Bore Diameter: 4.250 INCHES IN
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE
Applications
  • Applications requiring Steel Comp 8620 Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-00-081-1559, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Rockford Powertrain Inc Div Powertrain Rockford, Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-081-1559
Primary Part NumberA30165900-9
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerRockford Powertrain Inc Div Powertrain Rockford, Inc.
StatusACTIVE
Radial Wall Thickness0.1700 INCHES MINIMUM AND 0.1800 INCHES MAXIMUM IN
MaterialSTEEL COMP 8620 OVERALL
Joint StyleVERTICAL JOINT
Ring StyleCONCENTRIC
FSC Application DataMARINETRANSMISSI0N,REVERSEANDREDUCTI0NGEAR
Standard Bore Diameter4.250 INCHES IN
Cross-Sectional Shape StylePLAIN RECTANGULAR, STRAIGHT FACE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5930-00-081-4812A30-301 INTERCHANGEABLE
Switch,thermostatic
Ranco Inc Ranco Controls Div
Cross-Reference Index
Part NumberManufacturer
A301659 Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA)
A30165900-9 PRIMARY Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA)
Related Parts
5930-00-081-4812INTERCHANGEABLE
SWITCH,THERMOSTATIC
A30-301

Frequently Asked Questions

What is NSN 4310-00-081-1559?

NSN 4310-00-081-1559 is a Ring,piston, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-081-1559?

NSN 4310-00-081-1559 has 2 cross-referenced part numbers: A301659 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.), A30165900-9 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.).

What NSN replaces 4310-00-081-1559?

There is 1 known substitute for 4310-00-081-1559: 5930-00-081-4812. Verify interchangeability with system specifications before substitution.

What are the specifications of A30165900-9?

Key specifications for A30165900-9: Radial Wall Thickness: 0.1700 INCHES MINIMUM AND 0.1800 INCHES MAXIMUM IN; Material: STEEL COMP 8620 OVERALL; Overall Width: 0.9320 INCHES NOMINAL IN; Joint Style: VERTICAL JOINT. 8 total characteristics are documented in the Federal Logistics Information System.

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