PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7325 ARing,piston

O. C. Keckley Company · NSN 4310-01-010-1278 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-010-1278 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-010-1278. Primary manufacturer part number: 7325 A.
Features
  • Ring,piston — FSC 4310
  • Ring Style: CONCENTRIC
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE
  • Standard Bore Diameter: 2.750 INCHES IN
  • Features Provided: WEARING EDGES BEVELED
  • Radial Wall Thickness: 0.0720 INCHES NOMINAL IN
  • Material: IRON OVERALL
  • Joint Style: VERTICAL JOINT
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-01-010-1278, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is O. C. Keckley Company. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-010-1278
Primary Part Number7325 A
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerO. C. Keckley Company
StatusACTIVE
Ring StyleCONCENTRIC
Cross-Sectional Shape StylePLAIN RECTANGULAR, STRAIGHT FACE
Standard Bore Diameter2.750 INCHES IN
Features ProvidedWEARING EDGES BEVELED
Radial Wall Thickness0.0720 INCHES NOMINAL IN
MaterialIRON OVERALL
Joint StyleVERTICAL JOINT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4920-00-015-28497325 INTERCHANGEABLE
Shaft,pinion,signal
Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto
5305-00-068-0510B1821BH038C100N INTERCHANGEABLE
Screw,cap,hexagon Head
American National Standards Institute Incorporated Dba American National Standards Institute
5935-00-149-3304RE B 49080 INTERCHANGEABLE
Adapter,connector
Naval Ship Systems Command
6695-00-532-8140 INTERCHANGEABLE
Sampler,liquid,automatic
4730-01-224-8402 INTERCHANGEABLE
Ferrule,brazing,tube Fitting
5945-01-244-94630490-0670 INTERCHANGEABLE
Relay,electromagnetic
Keysight Technologies Inc
5120-01-291-35661U7563 INTERCHANGEABLE
Key,socket Head Screw
Caterpillar Inc Div Caterpillar Defense
5950-01-339-6683142608-0001 INTERCHANGEABLE
Coil,electrical
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3030-01-365-37657325 INTERCHANGEABLE
Belt,v
Gates Corporation
3110-01-411-2401W94 INTERCHANGEABLE
Plate,retaining,bearing
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
7325 O. C. Keckley Company (USA)
7325 A PRIMARY O. C. Keckley Company (USA)
17090-A O. C. Keckley Company (USA)
Related Parts
4920-00-015-2849INTERCHANGEABLE
SHAFT,PINION,SIGNAL
7325
5305-00-068-0510INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
B1821BH038C100N
5935-00-149-3304INTERCHANGEABLE
ADAPTER,CONNECTOR
RE B 49080
6695-00-532-8140INTERCHANGEABLE
SAMPLER,LIQUID,AUTOMATIC
4730-01-224-8402INTERCHANGEABLE
FERRULE,BRAZING,TUBE FITTING
5945-01-244-9463INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
0490-0670
5120-01-291-3566INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
1U7563
5950-01-339-6683INTERCHANGEABLE
COIL,ELECTRICAL
142608-0001
3030-01-365-3765INTERCHANGEABLE
BELT,V
7325
3110-01-411-2401INTERCHANGEABLE
PLATE,RETAINING,BEARING
W94
6625-01-553-2112INTERCHANGEABLE
TEST SET,ELECTRONIC SYSTEMS
7325
6625-01-553-2113INTERCHANGEABLE
TEST SET,ELECTRONIC SYSTEMS
7325A

Frequently Asked Questions

What is NSN 4310-01-010-1278?

NSN 4310-01-010-1278 is a Ring,piston, manufactured by O. C. Keckley Company, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-010-1278?

NSN 4310-01-010-1278 has 3 cross-referenced part numbers: 7325 (O. C. Keckley Company), 7325 A (O. C. Keckley Company), 17090-A (O. C. Keckley Company).

What NSN replaces 4310-01-010-1278?

There are 12 known substitutes for 4310-01-010-1278: 4920-00-015-2849, 5305-00-068-0510, 5935-00-149-3304 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7325 A?

Key specifications for 7325 A: Overall Width: 0.1235 INCHES NOMINAL IN; Ring Style: CONCENTRIC; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Standard Bore Diameter: 2.750 INCHES IN. 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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