PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-C-1203Cup,priming

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 2805-00-275-3030 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-275-3030 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-275-3030. Primary manufacturer part number: MIL-C-1203.
Features
  • Cup,priming — FSC 2805
  • Height: 2.344 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 27
  • Width Across Flats: 0.562 INCHES NOMINAL IN
  • Nominal Thread Size: 0.125 INCHES IN
  • Bowl Diameter: 0.625 INCHES NOMINAL IN
  • Screw Thread Series Designator: NPT
  • Material: COPPER ALLOY OVERALL
Applications
  • Applications requiring Copper Alloy Overall construction
General Description

The Cup,priming, cataloged under National Stock Number 2805-00-275-3030, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2805-00-275-3030
Primary Part NumberMIL-C-1203
Item NameCup,priming
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Height2.344 INCHES NOMINAL IN
Thread Quantity Per Inch27
Width Across Flats0.562 INCHES NOMINAL IN
Nominal Thread Size0.125 INCHES IN
Bowl Diameter0.625 INCHES NOMINAL IN
Screw Thread Series DesignatorNPT
MaterialCOPPER ALLOY OVERALL
Style DesignatorSTRAIGHT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5325-01-379-8407 INTERCHANGEABLE
Grommet,nonmetallic
6140-01-474-6576 INTERCHANGEABLE
Battery,storage
Cross-Reference Index
Part NumberManufacturer
MIL-C-1203 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
503 Essex Brass Corporation (USA)
RG12 Heil Environmental Industries (USA)
RG12 Butler Manufacturing Company Inc (USA)
Related Parts
5325-01-379-8407INTERCHANGEABLE
GROMMET,NONMETALLIC
6140-01-474-6576INTERCHANGEABLE
BATTERY,STORAGE

Frequently Asked Questions

What is NSN 2805-00-275-3030?

NSN 2805-00-275-3030 is a Cup,priming, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-00-275-3030?

NSN 2805-00-275-3030 has 4 cross-referenced part numbers: MIL-C-1203 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 503 (Essex Brass Corporation), RG12 (Heil Environmental Industries), RG12 (Butler Manufacturing Company Inc).

What NSN replaces 2805-00-275-3030?

There are 2 known substitutes for 2805-00-275-3030: 5325-01-379-8407, 6140-01-474-6576. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-C-1203?

Key specifications for MIL-C-1203: Height: 2.344 INCHES NOMINAL IN; Thread Quantity Per Inch: 27; Width Across Flats: 0.562 INCHES NOMINAL IN; Nominal Thread Size: 0.125 INCHES IN. 8 total characteristics are documented in the Federal Logistics Information System.

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