PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3278Cylinder Assembly,hydraulic Brak

Allied Automotive Allied Aftermarket Div · NSN 2530-00-846-2379 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-846-2379 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-846-2379. Primary manufacturer part number: 3278.
Features
  • Cylinder Assembly,hydraulic Brak — FSC 2530
  • Features Provided: RUBBER BOOT
  • Mounting Facility Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Port Thread Diameter: 0.312 INCHES NOMINAL SINGLE PORT IN
  • Mounting Facility Thread Class: 2B
  • Port Thread Quantity Per Inch: 24 SINGLE PORT
  • Seat Angle in Deg: 42.0 SINGLE PORT
  • Port Thread Series Designator: UNF SINGLE PORT
Applications
  • Applications requiring Steel Body construction
General Description

The Cylinder Assembly,hydraulic Brak, cataloged under National Stock Number 2530-00-846-2379, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Allied Automotive Allied Aftermarket Div. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 16 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
NSN2530-00-846-2379
Primary Part Number3278
Item NameCylinder Assembly,hydraulic Brak
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerAllied Automotive Allied Aftermarket Div
StatusCANCELLED
Features ProvidedRUBBER BOOT
Mounting Facility Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Port Thread Diameter0.312 INCHES NOMINAL SINGLE PORT IN
Mounting Facility Thread Class2B
Port Thread Quantity Per Inch24 SINGLE PORT
Seat Angle in Deg42.0 SINGLE PORT
Port Thread Series DesignatorUNF SINGLE PORT
Port Location and Quantity1 CENTER SECTION
Mounting Facility Thread Quantity Per Inch20
Port Thread Class2B SINGLE PORT
Mounting Facility Thread DirectionRIGHT-HAND
Center to Center Distance Between Mounting Provisions1.625 INCHES NOMINAL IN
Port StyleINVERTED FLARE SINGLE PORT
Mounting Type and LocationFLANGE CENTER SECTION
Mounting Facility Thread Diameter0.250 INCHES NOMINAL IN
Mounting Provision Arrangement StyleTWO HOLE
Bleeding Feature Quantity1
Design CharacteristicsSINGLE ACTING SINGLE CYLINDER
Mounting Facility Thread Length0.375 INCHES NOMINAL IN
Bore TypeSTRAIGHT
MaterialSTEEL BODY
Bore Diameter0.875 INCHES NOMINAL IN
Mounting ProvisionTHREADED MOUNTING HOLES
Body Outside Diameter1.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5325-00-044-5043327-8 INTERCHANGEABLE
Insert,screw Thread
Stanley Engineered Fastening Llc
5905-00-107-48812100-3154 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Keysight Technologies Inc
3040-00-118-40603278 INTERCHANGEABLE
Gearshaft,spur
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5930-00-132-44003278 INTERCHANGEABLE
Switch,rotary
Ballantine Laboratories Inc
5930-00-163-72063645 INTERCHANGEABLE
Switch,code Indicating Wheel
Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch
5961-00-173-3433D8197CJ INTERCHANGEABLE
Semiconductor Device,diode
Microsemi Corp-Colorado
5120-00-176-38601700 INTERCHANGEABLE
Tool,upper Seat
Lawler Manufacturing Company, Inc.
6810-00-241-1144 INTERCHANGEABLE
Potassium Sulfate
5315-00-241-2931 INTERCHANGEABLE
Pin,straight,headless
4730-00-278-0134 INTERCHANGEABLE
Elbow,pipe
Cross-Reference Index
Part NumberManufacturer
3278 Allied Automotive Allied Aftermarket Div (USA)
W37782 Airtex Products Div of Uis Inc (USA)
F37782 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
EW39958 Eis Brake Parts Div of Standard Motor Products Inc (USA)
5469002 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
H-37783 Chrysler Corp Service and Parts Opns (USA)
5473026 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
C7ZZ2262A Ford Motor Company (USA)
C1UZ2262A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
C1442262A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
C1VZ2262A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
WC116 Trw Inc Replacement Parts Div (USA)
D3TZ2262C Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
172-659 General Motors Corp Delco Electronics Div (USA)
C1UU2262A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
C7ZZ2262A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
3645 Bendix Corp the (USA)
D3TZ2262E Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
WC116 C E Niehoff & Co (USA)
219-1536 Goodyear Tire and Rubber Co the (USA)
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5325-00-044-5043INTERCHANGEABLE
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2100-3154
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GEARSHAFT,SPUR
3278
5930-00-132-4400INTERCHANGEABLE
SWITCH,ROTARY
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5930-00-163-7206INTERCHANGEABLE
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5961-00-173-3433INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
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TOOL,UPPER SEAT
1700
6810-00-241-1144INTERCHANGEABLE
POTASSIUM SULFATE
5315-00-241-2931INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
4730-00-278-0134INTERCHANGEABLE
ELBOW,PIPE
3455-00-293-0520INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
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SLING,AIRCRAFT MAINTENANCE
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Frequently Asked Questions

What is NSN 2530-00-846-2379?

NSN 2530-00-846-2379 is a Cylinder Assembly,hydraulic Brak, manufactured by Allied Automotive Allied Aftermarket Div, classified under FSC 2530 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2530-00-846-2379?

NSN 2530-00-846-2379 has 23 cross-referenced part numbers: 3278 (Allied Automotive Allied Aftermarket Div), W37782 (Airtex Products Div of Uis Inc), F37782 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), EW39958 (Eis Brake Parts Div of Standard Motor Products Inc), 5469002 (Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02) and 18 more.

What NSN replaces 2530-00-846-2379?

There are 12 known substitutes for 2530-00-846-2379: 5325-00-044-5043, 5905-00-107-4881, 3040-00-118-4060 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3278?

Key specifications for 3278: Features Provided: RUBBER BOOT; Mounting Facility Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Port Thread Diameter: 0.312 INCHES NOMINAL SINGLE PORT IN; Mounting Facility Thread Class: 2B. 26 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2530-00-846-2379 still in active supply?

NSN 2530-00-846-2379 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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