PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N4301AAValve,relay,air Pressure

Haldex Brake Products Corporation · NSN 2530-01-137-9236 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-01-137-9236 — this item is cataloged by the U.S. Government under National Stock Number 2530-01-137-9236. Primary manufacturer part number: N4301AA.
Features
  • Valve,relay,air Pressure — FSC 2530
  • Third End Relationship with Preceding Ends: IDENTICAL WITH SECOND END
  • End Connection Quantity: 4
  • Fourth End Relationship with Preceding Ends: IDENTICAL WITH SECOND END
  • First End Style Designator: PLAIN
  • Second End Thread Series Designator: NPT
  • Second End Connection Type: THREADED INTERNAL PIPE
  • First End Thread Series Designator: NPT
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Circuit control and protection
  • Equipment power management
General Description

The Valve,relay,air Pressure, cataloged under National Stock Number 2530-01-137-9236, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Haldex Brake Products Corporation. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2530-01-137-9236
Primary Part NumberN4301AA
Item NameValve,relay,air Pressure
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerHaldex Brake Products Corporation
StatusCANCELLED
Third End Relationship with Preceding EndsIDENTICAL WITH SECOND END
End Connection Quantity4
Fourth End Relationship with Preceding EndsIDENTICAL WITH SECOND END
First End Style DesignatorPLAIN
Second End Thread Series DesignatorNPT
Second End Connection TypeTHREADED INTERNAL PIPE
First End Thread Series DesignatorNPT
First End Nominal Thread Size0.750 INCHES IN
Second End Relationship with First EndNOT IDENTICAL
Second End Style DesignatorPLAIN
Second End Nominal Thread Size0.250 INCHES IN
First End Thread DirectionRIGHT-HAND
First End Connection TypeTHREADED INTERNAL PIPE
Second End Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5815-00-709-2615SM-B-314951 INTERCHANGEABLE
Spring
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-01-005-3281KN30300 INTERCHANGEABLE
Valve,linear,directional Control
Haldex Brake Products Corporation
5950-01-017-356811679 INTERCHANGEABLE
Transformer,power
Standex Electronics, Inc.
6615-01-100-5285 INTERCHANGEABLE
Mounting Plate
5331-01-126-9500 INTERCHANGEABLE
O-Ring
5998-01-128-1027 INTERCHANGEABLE
Circuit Card Assembly
4820-01-165-5761KN30400 INTERCHANGEABLE
Valve,relay,emergen
Haldex Brake Products Corporation
4470-01-225-9481 INTERCHANGEABLE
Coil Assembly
5360-01-645-279411679 INTERCHANGEABLE
Spring,helical,compression
Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.
Cross-Reference Index
Part NumberManufacturer
KN30300 Midland Brake Inc Div of Echlin Inc (USA)
KN30300 Haldex Brake Products Corporation (USA)
3167500 Wisconsin Trailer Co Inc (USA)
11662236 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
MID/KN30300 Daimler Truck North America Llc (USA)
N3714GH Hamilton Trailer Co Inc (USA)
11679 Midland Brake Inc Div of Echlin Inc (USA)
A71890 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
1212AS421-1 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
N3714G Haldex Brake Products Corporation (USA)
3267800 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
A71890 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
N4301AA Midland Brake Inc Div of Echlin Inc (USA)
N4301AA PRIMARY Haldex Brake Products Corporation (USA)
N3714G La Crosse Trailer Corp (USA)
U3TT4G Haldex Brake Products Corporation (USA)
Related Parts
5815-00-709-2615INTERCHANGEABLE
SPRING
SM-B-314951
4820-01-005-3281INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
KN30300
5950-01-017-3568INTERCHANGEABLE
TRANSFORMER,POWER
11679
6615-01-100-5285INTERCHANGEABLE
MOUNTING PLATE
5331-01-126-9500INTERCHANGEABLE
O-RING
5998-01-128-1027INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4820-01-165-5761INTERCHANGEABLE
VALVE,RELAY,EMERGEN
KN30400
4470-01-225-9481INTERCHANGEABLE
COIL ASSEMBLY
5360-01-645-2794INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
11679

Frequently Asked Questions

What is NSN 2530-01-137-9236?

NSN 2530-01-137-9236 is a Valve,relay,air Pressure, manufactured by Haldex Brake Products Corporation, classified under FSC 2530 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2530-01-137-9236?

NSN 2530-01-137-9236 has 16 cross-referenced part numbers: KN30300 (Midland Brake Inc Div of Echlin Inc), KN30300 (Haldex Brake Products Corporation), 3167500 (Wisconsin Trailer Co Inc), 11662236 (U S Army Tank Automotive Command Amsta-Im-Mm), MID/KN30300 (Daimler Truck North America Llc) and 11 more.

What NSN replaces 2530-01-137-9236?

There are 9 known substitutes for 2530-01-137-9236: 5815-00-709-2615, 4820-01-005-3281, 5950-01-017-3568 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N4301AA?

Key specifications for N4301AA: Third End Relationship with Preceding Ends: IDENTICAL WITH SECOND END; End Connection Quantity: 4; Fourth End Relationship with Preceding Ends: IDENTICAL WITH SECOND END; First End Style Designator: PLAIN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2530-01-137-9236 still in active supply?

NSN 2530-01-137-9236 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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