PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56103Pin,firing

Colt's Manufacturing Company, Llc · NSN 1005-00-420-5105 · FSC 1005 · No Item Name Available
Verified by PartsTable
NSN 1005-00-420-5105 — this item is cataloged by the U.S. Government under National Stock Number 1005-00-420-5105. Primary manufacturer part number: 56103.
Features
  • Pin,firing — FSC 1005
  • Firing Pin Type: SINGLE
  • Casehardening Indicator: NOT CASEHARDENED
  • Metallic Hardness Rating: 45.0 MINIMUM ROCKWELL C AND 48.0 MAXIMUM ROCKWELL C
  • Striking End Diameter: 0.068 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
  • Striking End Type: SPHERICAL
  • Striking End Radius: 0.034 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
  • Material: STEEL
Applications
  • Applications requiring Steel construction
General Description

The Pin,firing, cataloged under National Stock Number 1005-00-420-5105, is classified within Federal Supply Class 1005 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Colt's Manufacturing Company, Llc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1005-00-420-5105
Primary Part Number56103
Item NamePin,firing
FSC / FSG1005 / 10 — No Item Name Available
ManufacturerColt's Manufacturing Company, Llc
StatusACTIVE
Firing Pin TypeSINGLE
Casehardening IndicatorNOT CASEHARDENED
Metallic Hardness Rating45.0 MINIMUM ROCKWELL C AND 48.0 MAXIMUM ROCKWELL C
Striking End Diameter0.068 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
Striking End TypeSPHERICAL
Striking End Radius0.034 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
MaterialSTEEL
FSC Application DataREVOLVER,CALIBER .38
Material Document and ClassificationAISI 1070 THRU 1080 ASSN STD SINGLE MATERIAL RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2805-00-353-592670523C1 INTERCHANGEABLE
Deflector,airflow
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5305-01-194-4775818157-0 INTERCHANGEABLE
Screw,machine
Volvo Penta of the Americas Inc
4820-01-384-8930561-03 INTERCHANGEABLE
Stem,fluid Valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5996-01-553-739956103 INTERCHANGEABLE
Amplifier Assembly
Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
Part NumberManufacturer
56103 Colt's Manufacturing Company, Llc (USA)
Related Parts
2805-00-353-5926INTERCHANGEABLE
DEFLECTOR,AIRFLOW
70523C1
5305-01-194-4775INTERCHANGEABLE
SCREW,MACHINE
818157-0
4820-01-384-8930INTERCHANGEABLE
STEM,FLUID VALVE
561-03
5996-01-553-7399INTERCHANGEABLE
AMPLIFIER ASSEMBLY
56103

Frequently Asked Questions

What is NSN 1005-00-420-5105?

NSN 1005-00-420-5105 is a Pin,firing, manufactured by Colt's Manufacturing Company, Llc, classified under FSC 1005 (No Item Name Available). Status: active.

What are the part numbers for NSN 1005-00-420-5105?

NSN 1005-00-420-5105 has 1 cross-referenced part number: 56103 (Colt's Manufacturing Company, Llc).

What NSN replaces 1005-00-420-5105?

There are 4 known substitutes for 1005-00-420-5105: 2805-00-353-5926, 5305-01-194-4775, 4820-01-384-8930 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56103?

Key specifications for 56103: Firing Pin Type: SINGLE; Casehardening Indicator: NOT CASEHARDENED; Overall Length: 0.495 INCHES NOMINAL IN; Metallic Hardness Rating: 45.0 MINIMUM ROCKWELL C AND 48.0 MAXIMUM ROCKWELL C. 10 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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