PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-R-20520Cartridge,75 Millimeter

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 1315-00-028-4647 · FSC 1315 · No Item Name Available
Verified by PartsTable
NSN 1315-00-028-4647 — this item is cataloged by the U.S. Government under National Stock Number 1315-00-028-4647. Primary manufacturer part number: MIL-R-20520.
Features
  • Cartridge,75 Millimeter — FSC 1315
  • Proximity Fuze Adaptability: NOT ADAPTABLE
  • Cartridge Model Number: M61A1
  • Cartridge Design Type: ARMOR PIERCING CAPPED-TRACER
  • Fuze Type: BASE DETONATING
  • Dod Ammunition Code: 1315-C075
  • Material: COPPER ALLOY CARTRIDGE CASE
  • Weapon for Which Designed: GUN M6 AIR FORCE PALLET
Applications
  • Applications requiring Copper Alloy Cartridge Case construction
General Description

The Cartridge,75 Millimeter, cataloged under National Stock Number 1315-00-028-4647, is classified within Federal Supply Class 1315 (No Item Name Available) of the Ammunition and Explosives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1315-00-028-4647
Primary Part NumberMIL-R-20520
Item NameCartridge,75 Millimeter
FSC / FSG1315 / 13 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Proximity Fuze AdaptabilityNOT ADAPTABLE
Cartridge Model NumberM61A1
Cartridge Design TypeARMOR PIERCING CAPPED-TRACER
Fuze TypeBASE DETONATING
Dod Ammunition Code1315-C075
MaterialCOPPER ALLOY CARTRIDGE CASE
Weapon for Which DesignedGUN M6 AIR FORCE PALLET
Hazardous Material Classification Code08 INHABITED BUILDING DISTANCE AND 1.2 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION AND E STORAGE COMPATIBILITY GROUP AND I DEPARTMENT OF TRANSPORTATION CLASS
Propellant Characteristic MarkingsNOT REQUIRED
Weapon for Which DesignedGUN M3 SHIPPING CONTAINER
Fuze Model NumberM66A1
Muzzle Velocity2030.0 FEET PER SECOND NOMINAL FT
Unable to DecodeUNABLE TO DECODE
Fuze Delay Time0.010 SECONDS NOMINAL
Supplementary ChargeNOT INCLUDED
Gross Weight32.9 SHIPPING CONTAINER POUNDS AND 1588.0 PALLET POUNDS
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY CARTRIDGE CASE MATERIAL;CARTRIDGE MODEL NUMBER;UNIT PACKAGE QUANTITY;UNIT PACKAGE TYPE; PACKAGE MODEL NUMBER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1315-00-028-4622 INTERCHANGEABLE
Cartridge,75 Millimeter
1315-00-028-4628 INTERCHANGEABLE
Cartridge,75 Millimeter
1315-00-301-1762R1LJA INTERCHANGEABLE
Cartridge,75 Millimeter
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament
Cross-Reference Index
Part NumberManufacturer
MIL-R-20520 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
75-1-103-5 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
1315-C075 Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics (USA)
Related Parts
1315-00-028-4622INTERCHANGEABLE
CARTRIDGE,75 MILLIMETER
1315-00-028-4628INTERCHANGEABLE
CARTRIDGE,75 MILLIMETER
1315-00-301-1762INTERCHANGEABLE
CARTRIDGE,75 MILLIMETER
R1LJA

Frequently Asked Questions

What is NSN 1315-00-028-4647?

NSN 1315-00-028-4647 is a Cartridge,75 Millimeter, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 1315 (No Item Name Available). Status: active.

What are the part numbers for NSN 1315-00-028-4647?

NSN 1315-00-028-4647 has 3 cross-referenced part numbers: MIL-R-20520 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 75-1-103-5 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament), 1315-C075 (Department of Defense Ammunition Code Assigned and Promulgated by Characteristics and Taxomony Branch Defense Logistics).

What NSN replaces 1315-00-028-4647?

There are 3 known substitutes for 1315-00-028-4647: 1315-00-028-4622, 1315-00-028-4628, 1315-00-301-1762. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-R-20520?

Key specifications for MIL-R-20520: Proximity Fuze Adaptability: NOT ADAPTABLE; Cartridge Model Number: M61A1; Cartridge Design Type: ARMOR PIERCING CAPPED-TRACER; Fuze Type: BASE DETONATING. 17 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com