PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A155-264PC57Ring,wearing

Tbg Inc Peerless Pump Div · NSN 4320-00-097-0842 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-097-0842 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-097-0842. Primary manufacturer part number: A155-264PC57.
Features
  • Ring,wearing — FSC 4320
  • Surface Finish: 125.0 MICROINCHES RIGHT FACE
  • Body Outside Diameter: 4.000 INCHES MINIMUM AND 4.001 INCHES MAXIMUM IN
  • Surface Finish: 125.0 MICROINCHES OUTSIDE
  • Material: COPPER ALLOY
  • Corner Shape: SQUARE ALL CORNERS
  • Surface Finish: 125.0 MICROINCHES LEFT FACE
  • Surface Finish: 125.0 MICROINCHES INSIDE
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-097-0842, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Tbg Inc Peerless Pump Div. Government technical data includes 11 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-097-0842
Primary Part NumberA155-264PC57
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerTbg Inc Peerless Pump Div
StatusACTIVE
Surface Finish125.0 MICROINCHES RIGHT FACE
Body Outside Diameter4.000 INCHES MINIMUM AND 4.001 INCHES MAXIMUM IN
Surface Finish125.0 MICROINCHES OUTSIDE
MaterialCOPPER ALLOY
Corner ShapeSQUARE ALL CORNERS
Surface Finish125.0 MICROINCHES LEFT FACE
Surface Finish125.0 MICROINCHES INSIDE
Body StyleEXTERNAL FLANGE
Left Side Flange Thickness0.125 INCHES NOMINAL IN
Flange Diameter4.250 INCHES NOMINAL IN
Body Inside Diameter3.499 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6930-00-156-07975724 INTERCHANGEABLE
Spring Assembly,cen
Cae Usa Inc.
4730-00-371-4999005724 INTERCHANGEABLE
Strainer Element,sediment
Caterpillar Inc Div Caterpillar Defense
4730-01-102-0787W10869-12 INTERCHANGEABLE
Clamp,hose
Hobart Bros Co
5330-01-186-9326 INTERCHANGEABLE
Gasket
4730-01-218-8213SF-1-S20IN INTERCHANGEABLE
Trap,steam
Nicholson Steam Trap Inc
5950-01-596-54155724 INTERCHANGEABLE
Coil,radio Frequency
Bell Industries Inc J W Miller Magnetics Div
1680-01-648-51615724 INTERCHANGEABLE
Lcs Coolant Pump
Pacific Design Technologies, Inc. Dba Pacific Design Technologies
Cross-Reference Index
Part NumberManufacturer
A155-264PC57 Tbg Inc Peerless Pump Div (USA)
57-2-4 Tbg Inc Peerless Pump Div (USA)
Related Parts
6930-00-156-0797INTERCHANGEABLE
SPRING ASSEMBLY,CEN
5724
4730-00-371-4999INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
005724
4730-01-102-0787INTERCHANGEABLE
CLAMP,HOSE
W10869-12
5330-01-186-9326INTERCHANGEABLE
GASKET
4730-01-218-8213INTERCHANGEABLE
TRAP,STEAM
SF-1-S20IN
5950-01-596-5415INTERCHANGEABLE
COIL,RADIO FREQUENCY
5724
1680-01-648-5161INTERCHANGEABLE
LCS COOLANT PUMP
5724

Frequently Asked Questions

What is NSN 4320-00-097-0842?

NSN 4320-00-097-0842 is a Ring,wearing, manufactured by Tbg Inc Peerless Pump Div, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-097-0842?

NSN 4320-00-097-0842 has 2 cross-referenced part numbers: A155-264PC57 (Tbg Inc Peerless Pump Div), 57-2-4 (Tbg Inc Peerless Pump Div).

What NSN replaces 4320-00-097-0842?

There are 7 known substitutes for 4320-00-097-0842: 6930-00-156-0797, 4730-00-371-4999, 4730-01-102-0787 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A155-264PC57?

Key specifications for A155-264PC57: Surface Finish: 125.0 MICROINCHES RIGHT FACE; Body Outside Diameter: 4.000 INCHES MINIMUM AND 4.001 INCHES MAXIMUM IN; Surface Finish: 125.0 MICROINCHES OUTSIDE; Material: COPPER ALLOY. 13 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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