PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

30-188Ring,piston

Hardie-Tynes Co., Inc. · NSN 4310-00-343-6251 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-343-6251 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-343-6251. Primary manufacturer part number: 30-188.
Features
  • Ring,piston — FSC 4310
  • Material: IRON OVERALL
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
  • Standard Bore Diameter: 1.532 INCHES IN
  • Joint Style: VERTICAL JOINT
  • Ring Style: CONCENTRIC
  • Material Document and Classification: QQ-I-652,CLASS 40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Radial Wall Thickness: 0.1250 INCHES NOMINAL IN
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-00-343-6251, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Hardie-Tynes Co., Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-343-6251
Primary Part Number30-188
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerHardie-Tynes Co., Inc.
StatusACTIVE
MaterialIRON OVERALL
Cross-Sectional Shape StylePLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE
Standard Bore Diameter1.532 INCHES IN
Joint StyleVERTICAL JOINT
Ring StyleCONCENTRIC
Material Document and ClassificationQQ-I-652,CLASS 40 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Radial Wall Thickness0.1250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-100-078018485 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Komatsu America Corporation
5330-00-694-095530188 INTERCHANGEABLE
Gasket
Dana Corp Spicer Transmission Div
2540-00-725-407153006-24V INTERCHANGEABLE
Motor,windshield Wiper,electric
Maradyne Corporation
2520-01-084-32513-0188 INTERCHANGEABLE
Journal and Bearing
Neapco Inc
5905-01-086-737130188 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Adams Rite Aerospace, Inc
5360-01-316-9446 INTERCHANGEABLE
Spring,helical,extension
5310-01-319-108830188 INTERCHANGEABLE
Washer,concave
Brunswick Corp Dba Mercury Marine Div Mercury Marine
5315-01-406-3635 INTERCHANGEABLE
Pin,lock
5360-01-417-782330188 INTERCHANGEABLE
Spring,helical,compression
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
5310-01-678-778930188 INTERCHANGEABLE
Push on Nut
Little Beaver Inc
Cross-Reference Index
Part NumberManufacturer
30-188 Hardie-Tynes Co., Inc. (USA)
Related Parts
3110-00-100-0780INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
18485
5330-00-694-0955INTERCHANGEABLE
GASKET
30188
2540-00-725-4071INTERCHANGEABLE
MOTOR,WINDSHIELD WIPER,ELECTRIC
53006-24V
2520-01-084-3251INTERCHANGEABLE
JOURNAL AND BEARING
3-0188
5905-01-086-7371INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
30188
5360-01-316-9446INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5310-01-319-1088INTERCHANGEABLE
WASHER,CONCAVE
30188
5315-01-406-3635INTERCHANGEABLE
PIN,LOCK
5360-01-417-7823INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
30188
5310-01-678-7789INTERCHANGEABLE
PUSH ON NUT
30188

Frequently Asked Questions

What is NSN 4310-00-343-6251?

NSN 4310-00-343-6251 is a Ring,piston, manufactured by Hardie-Tynes Co., Inc., classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-343-6251?

NSN 4310-00-343-6251 has 1 cross-referenced part number: 30-188 (Hardie-Tynes Co., Inc.).

What NSN replaces 4310-00-343-6251?

There are 10 known substitutes for 4310-00-343-6251: 3110-00-100-0780, 5330-00-694-0955, 2540-00-725-4071 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 30-188?

Key specifications for 30-188: Material: IRON OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, TWO PIECE, STRAIGHT FACE; Standard Bore Diameter: 1.532 INCHES 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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