PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121-501Brake Drum

Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc · NSN 2530-00-528-9090 · FSC 2530 · No Item Name Available
Verified by PartsTable
NSN 2530-00-528-9090 — this item is cataloged by the U.S. Government under National Stock Number 2530-00-528-9090. Primary manufacturer part number: 121-501.
Features
  • Brake Drum — FSC 2530
  • Overall Outside Diameter: 7.500 INCHES NOMINAL IN
  • Braking Surface Diameter: 7.125 INCHES NOMINAL IN
  • Adjustment Hole: NOT INCLUDED
  • Braking Surface Location: INTERNAL
  • Oil Drain Hole: NOT INCLUDED
  • Balancing Pad: NOT INCLUDED
  • Braking Surface Width: 2.438 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Brake Drum, cataloged under National Stock Number 2530-00-528-9090, is classified within Federal Supply Class 2530 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 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
NSN2530-00-528-9090
Primary Part Number121-501
Item NameBrake Drum
FSC / FSG2530 / 25 — No Item Name Available
ManufacturerJaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
StatusCANCELLED
Overall Outside Diameter7.500 INCHES NOMINAL IN
Braking Surface Diameter7.125 INCHES NOMINAL IN
Adjustment HoleNOT INCLUDED
Braking Surface LocationINTERNAL
Oil Drain HoleNOT INCLUDED
Balancing PadNOT INCLUDED
Braking Surface Width2.438 INCHES NOMINAL IN
Criticality Code JustificationFEAT
Cooling FinNOT INCLUDED
Inspection HoleNOT INCLUDED
MaterialSTEEL OVERALL
Mounting Hole SpacingEQUALLY SPACED ON 5-1/2 IN. BOLT CIRCLE IN
Mounting Hole Diameter0.531 INCHES NOMINAL IN
FSC Application DataBRAKES,SHOE TYPE,VEHICULAR
Center Hole Diameter4.000 INCHES NOMINAL IN
Mounting Hole Quantity5
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5905-00-108-6014 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5220-00-267-338382371 INTERCHANGEABLE
Gage,plug,plain Cylindrical
Curtiss-Wright Controls, Inc. Div Actuation Division
5330-00-361-275348107 INTERCHANGEABLE
Felt,mechanical,preformed
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5330-00-438-395021525 INTERCHANGEABLE
Gasket
Hydro-Aire Aerospace Corp
4935-00-448-582682371 INTERCHANGEABLE
Towbar Assy,dolly
Aerol Llc
1650-00-497-7296572581 INTERCHANGEABLE
Filter Assy Fluid
Purolator Facet Inc. Div Parker Aerospace Filtration Division Dba Purolator Facet, in
3110-00-533-67781795928 INTERCHANGEABLE
Cup,tapered Roller Bearing
Chrysler Realty Company Llc Dba Daimler Chrysler
1680-00-560-796621525 INTERCHANGEABLE
Control Assembly,push-Pull
Transdigm Inc
5905-00-756-6452311-0978-00 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Tektronix, Inc.
5961-00-879-4964 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
4-8107 Pdi Ground Support Systems, Inc. (USA)
31521 Pdi Ground Support Systems, Inc. (USA)
2-1525 Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
3719R44 Saginaw Products Corporation Dba Cignys (USA)
3719R44 Meritor Heavy Vehicle Systems, Llc (USA)
8237-1 Pdi Ground Support Systems, Inc. (USA)
121-501 PRIMARY Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
58C46228 San Antonio Air Logistics Center (USA)
Related Parts
5905-00-108-6014INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5220-00-267-3383INTERCHANGEABLE
GAGE,PLUG,PLAIN CYLINDRICAL
82371
5330-00-361-2753INTERCHANGEABLE
FELT,MECHANICAL,PREFORMED
48107
5330-00-438-3950INTERCHANGEABLE
GASKET
21525
4935-00-448-5826INTERCHANGEABLE
TOWBAR ASSY,DOLLY
82371
1650-00-497-7296INTERCHANGEABLE
FILTER ASSY FLUID
572581
3110-00-533-6778INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
1795928
1680-00-560-7966INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
21525
5905-00-756-6452INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
311-0978-00
5961-00-879-4964INTERCHANGEABLE
TRANSISTOR
5305-01-057-1301INTERCHANGEABLE
SCREW,MACHINE
5365-01-146-5110INTERCHANGEABLE
SPACER,SLEEVE
823-7-1

Frequently Asked Questions

What is NSN 2530-00-528-9090?

NSN 2530-00-528-9090 is a Brake Drum, manufactured by Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc, classified under FSC 2530 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2530-00-528-9090?

NSN 2530-00-528-9090 has 8 cross-referenced part numbers: 4-8107 (Pdi Ground Support Systems, Inc.), 31521 (Pdi Ground Support Systems, Inc.), 2-1525 (Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc), 3719R44 (Saginaw Products Corporation Dba Cignys), 3719R44 (Meritor Heavy Vehicle Systems, Llc) and 3 more.

What NSN replaces 2530-00-528-9090?

There are 12 known substitutes for 2530-00-528-9090: 5905-00-108-6014, 5220-00-267-3383, 5330-00-361-2753 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121-501?

Key specifications for 121-501: Overall Outside Diameter: 7.500 INCHES NOMINAL IN; End Item Identification: GRUMMAN A-10 AIRCRAFT;AIRCRAFT, F-16; Special Features: WEAPON SYSTEM ESSENTIAL; Braking Surface Diameter: 7.125 INCHES NOMINAL IN. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2530-00-528-9090 still in active supply?

NSN 2530-00-528-9090 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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