PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34-27Ring,control,fluid Flow

Alfa Laval Inc. · NSN 4330-00-274-9581 · FSC 4330 · No Item Name Available
Verified by PartsTable
NSN 4330-00-274-9581 — this item is cataloged by the U.S. Government under National Stock Number 4330-00-274-9581. Primary manufacturer part number: 34-27.
Features
  • Ring,control,fluid Flow — FSC 4330
  • General Characteristics Item Description: MATL STEEL; 1-15/16 IN. OD; 1-1/2 IN. ID; 1/8 IN. THK IN
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY RING SIZE DESIGNATION
  • 6 verified cross-references
  • Primary manufacturer: Alfa Laval Inc.
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,control,fluid Flow, cataloged under National Stock Number 4330-00-274-9581, is classified within Federal Supply Class 4330 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Alfa Laval Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN4330-00-274-9581
Primary Part Number34-27
Item NameRing,control,fluid Flow
FSC / FSG4330 / 43 — No Item Name Available
ManufacturerAlfa Laval Inc.
StatusACTIVE
General Characteristics Item DescriptionMATL STEEL; 1-15/16 IN. OD; 1-1/2 IN. ID; 1/8 IN. THK IN
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY RING SIZE DESIGNATION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3040-00-152-2458CO2306-001 INTERCHANGEABLE
Spindle,mechanically Actuated
Alfa Laval Inc
1620-00-198-86483427 INTERCHANGEABLE
Collar,locking,fork
Textron Aviation Inc
4730-00-218-5912HKA-A502-1-1 INTERCHANGEABLE
Packing Nut
Hatch & Kirk, Inc.
4930-00-332-0407AB5028-1 INTERCHANGEABLE
Catch,purfier
Alfa Laval Inc
4330-00-773-2594 INTERCHANGEABLE
Filter Element,fluid
5915-01-062-44953252107 INTERCHANGEABLE
Filter,band Pass
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4330-01-143-1467 INTERCHANGEABLE
Cover,fluid Filter
4330-01-143-2920 INTERCHANGEABLE
Stop,idler
4330-01-143-2921 INTERCHANGEABLE
Base,bearing
4330-01-143-4386 INTERCHANGEABLE
Ring,bearing,filler
Cross-Reference Index
Part NumberManufacturer
34-27 Alfa Laval Inc. (USA)
AC13135-27 Alfa Laval Inc. (USA)
NN-19- SYMBOL 34 Alfa Laval Inc. (USA)
34-8Y27 Alfa Laval Inc. (USA)
AA122-27-3 Alfa Laval Inc. (USA)
NN-19-1 Alfa Laval Inc. (USA)
Related Parts
3040-00-152-2458INTERCHANGEABLE
SPINDLE,MECHANICALLY ACTUATED
CO2306-001
1620-00-198-8648INTERCHANGEABLE
COLLAR,LOCKING,FORK
3427
4730-00-218-5912INTERCHANGEABLE
PACKING NUT
HKA-A502-1-1
4930-00-332-0407INTERCHANGEABLE
CATCH,PURFIER
AB5028-1
4330-00-773-2594INTERCHANGEABLE
FILTER ELEMENT,FLUID
5915-01-062-4495INTERCHANGEABLE
FILTER,BAND PASS
3252107
4330-01-143-1467INTERCHANGEABLE
COVER,FLUID FILTER
4330-01-143-2920INTERCHANGEABLE
STOP,IDLER
4330-01-143-2921INTERCHANGEABLE
BASE,BEARING
4330-01-143-4386INTERCHANGEABLE
RING,BEARING,FILLER
4330-01-143-9055INTERCHANGEABLE
FILLER,IDLER
4330-01-143-9056INTERCHANGEABLE
BASE,BEARING

Frequently Asked Questions

What is NSN 4330-00-274-9581?

NSN 4330-00-274-9581 is a Ring,control,fluid Flow, manufactured by Alfa Laval Inc., classified under FSC 4330 (No Item Name Available). Status: active.

What are the part numbers for NSN 4330-00-274-9581?

NSN 4330-00-274-9581 has 6 cross-referenced part numbers: 34-27 (Alfa Laval Inc.), AC13135-27 (Alfa Laval Inc.), NN-19- SYMBOL 34 (Alfa Laval Inc.), 34-8Y27 (Alfa Laval Inc.), AA122-27-3 (Alfa Laval Inc.) and 1 more.

What NSN replaces 4330-00-274-9581?

There are 12 known substitutes for 4330-00-274-9581: 3040-00-152-2458, 1620-00-198-8648, 4730-00-218-5912 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 34-27?

Key specifications for 34-27: General Characteristics Item Description: MATL STEEL; 1-15/16 IN. OD; 1-1/2 IN. ID; 1/8 IN. THK IN; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY RING SIZE DESIGNATION. 2 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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