PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18004890Cylinder Assembly,hydraulic Brak

General Motors Llc Dba General Motors Llc · NSN 2530-01-110-5304 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-01-110-5304 — this item is cataloged by the U.S. Government under National Stock Number 2530-01-110-5304. Primary manufacturer part number: 18004890.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 2530
  • Bore Diameter: 0.938 INCHES NOMINAL IN
  • Body Outside Diameter: 1.325 INCHES NOMINAL IN
  • Mounting Provision: THREADED MOUNTING HOLES
  • Design Characteristics: SINGLE ACTING SINGLE CYLINDER
  • Port Thread Quantity Per Inch: 24 SINGLE PORT
  • Center to Center Distance Between Mounting Provisions: 1.625 INCHES NOMINAL IN
  • Mounting Provision Arrangement Style: TWO HOLE
Applications
  • Applications requiring Iron Cast Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-01-110-5304, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2530-01-110-5304
Primary Part Number18004890
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerGeneral Motors Llc Dba General Motors Llc
StatusCANCELLED
Bore Diameter0.938 INCHES NOMINAL IN
Body Outside Diameter1.325 INCHES NOMINAL IN
Mounting ProvisionTHREADED MOUNTING HOLES
Design CharacteristicsSINGLE ACTING SINGLE CYLINDER
Port Thread Quantity Per Inch24 SINGLE PORT
Center to Center Distance Between Mounting Provisions1.625 INCHES NOMINAL IN
Mounting Provision Arrangement StyleTWO HOLE
Seat Angle in Deg42.0 SINGLE PORT
Port Location and Quantity1 CENTER SECTION
Mounting Facility Thread Length0.500 INCHES NOMINAL IN
Features ProvidedBLEEDER VALVES AND RUBBER BOOT
Port Thread Diameter0.375 INCHES NOMINAL SINGLE PORT IN
Bore TypeSTRAIGHT
Port StyleINVERTED FLARE SINGLE PORT
Mounting PositionLEFT AND RIGHT
Mounting Facility Thread Class2B
MaterialIRON CAST BODY
Mounting Facility Thread DirectionRIGHT-HAND
Criticality Code JustificationFEAT
Mounting Facility Thread Diameter0.312 INCHES NOMINAL IN
Mounting Type and LocationFLANGE CENTER SECTION
Bleeding Feature Quantity1
Port Thread Series DesignatorUNF SINGLE PORT
Mounting Facility Thread Quantity Per Inch18
Port Thread Class2B SINGLE PORT
Mounting Facility Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-0328563 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5360-00-291-51299913469 INTERCHANGEABLE
Spring,helical,compression
Alfa Laval Inc
5930-00-426-7517 INTERCHANGEABLE
Push Button
4730-00-816-7762SAE J513 6-6-6 010425BA(T1) INTERCHANGEABLE
Tee,pipe to Tube
Sae International Dba Sae International
5950-00-924-41801800854-1 INTERCHANGEABLE
Transformer,power
Northrop Grumman Systems Corporation
5935-01-097-02823469 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Crown Audio, Inc. Dba Crown International
5340-01-277-02931721219 INTERCHANGEABLE
Clamp,loop
Clark Material Handling Company
2330-01-317-0020370-48 INTERCHANGEABLE
Semitrailer,low Bed
Landoll Company, Llc
5930-01-457-9826 INTERCHANGEABLE
Switch,push
5930-01-470-839837048 INTERCHANGEABLE
Switch,electronic
Tld Wollard Llc
Cross-Reference Index
Part NumberManufacturer
37048 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
1721219 General Motors Corp Delco Remy Div (USA)
WC37048 Raymark Industries Inc Stratford Div (USA)
WC37048 Raymark Industries Inc (USA)
WC13469 Coni-Seal Inc (USA)
37048 Tvh Parts Co. (USA)
3469 Allied Automotive Allied Aftermarket Div (USA)
18004890 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
2530011105304 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
37048 Brake Parts Co Div of Echlin Inc (USA)
18004890 PRIMARY General Motors Llc Dba General Motors Llc (USA)
8129723 PRIMARY Am General Llc (USA)
W51081 Borg-Warner Corp Automotive Parts Div (USA)
Related Parts
3110-00-100-0328INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
563
5360-00-291-5129INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
9913469
5930-00-426-7517INTERCHANGEABLE
PUSH BUTTON
4730-00-816-7762INTERCHANGEABLE
TEE,PIPE TO TUBE
SAE J513 6-6-6 010425BA(T1)
5950-00-924-4180INTERCHANGEABLE
TRANSFORMER,POWER
1800854-1
5935-01-097-0282INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
3469
5340-01-277-0293INTERCHANGEABLE
CLAMP,LOOP
1721219
2330-01-317-0020INTERCHANGEABLE
SEMITRAILER,LOW BED
370-48
5930-01-457-9826INTERCHANGEABLE
SWITCH,PUSH
5930-01-470-8398INTERCHANGEABLE
SWITCH,ELECTRONIC
37048
1940-01-481-1321INTERCHANGEABLE
ANTI SPLASH TRIANGL
Z3469
6515-01-550-5505INTERCHANGEABLE
CASE,SOFT FIELDING,BLANKET RESCU
02005

Frequently Asked Questions

What is NSN 2530-01-110-5304?

NSN 2530-01-110-5304 is a Cylinder Assembly,hydraulic Brak, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2530 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2530-01-110-5304?

NSN 2530-01-110-5304 has 13 cross-referenced part numbers: 37048 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), 1721219 (General Motors Corp Delco Remy Div), WC37048 (Raymark Industries Inc Stratford Div), WC37048 (Raymark Industries Inc), WC13469 (Coni-Seal Inc) and 8 more.

What NSN replaces 2530-01-110-5304?

There are 12 known substitutes for 2530-01-110-5304: 3110-00-100-0328, 5360-00-291-5129, 5930-00-426-7517 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18004890?

Key specifications for 18004890: Overall Width: 2.230 INCHES NOMINAL IN; End Item Identification: SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE);VEHICLE,COMMERCIAL UTILITY CARGO (CUCV); Bore Diameter: 0.938 INCHES NOMINAL IN; Body Outside Diameter: 1.325 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2530-01-110-5304 still in active supply?

NSN 2530-01-110-5304 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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