PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

86203Key,socket Head Screw

Irwin Industrial Tool Company · NSN 5120-01-434-9355 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-434-9355 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-434-9355. Primary manufacturer part number: 86203.
Features
  • Key,socket Head Screw — FSC 5120
  • Material: STEEL OVERALL
  • Surface Treatment: OXIDE OVERALL
  • Wrenching Surface Size: 0.050 INCHES NOMINAL BOTH ENDS IN
  • Style Designator: L-HANDLE
  • Features Provided: BALL END AND LONG SERIES
  • Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL
  • 1 verified cross-reference
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-01-434-9355, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Irwin Industrial Tool Company. Government technical data includes 6 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
NSN5120-01-434-9355
Primary Part Number86203
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerIrwin Industrial Tool Company
StatusACTIVE
MaterialSTEEL OVERALL
Surface TreatmentOXIDE OVERALL
Wrenching Surface Size0.050 INCHES NOMINAL BOTH ENDS IN
Style DesignatorL-HANDLE
Features ProvidedBALL END AND LONG SERIES
Wrenching Surface ShapeHEXAGON BOTH ENDS EXTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6750-00-304-486386203 INTERCHANGEABLE
Developer,photographic
Rexham Graphics Inc
1650-00-321-629486203 INTERCHANGEABLE
Cable Drum,large,hy
Hydro-Aire Aerospace Corp
6515-01-240-5758 INTERCHANGEABLE
Tube,tracheal
6145-01-509-983886203 INTERCHANGEABLE
Cable,power,electrical
General Cable Corporation Div Corporate
Cross-Reference Index
Part NumberManufacturer
86203 PRIMARY Irwin Industrial Tool Company (USA)
Related Parts
6750-00-304-4863INTERCHANGEABLE
DEVELOPER,PHOTOGRAPHIC
86203
1650-00-321-6294INTERCHANGEABLE
CABLE DRUM,LARGE,HY
86203
6515-01-240-5758INTERCHANGEABLE
TUBE,TRACHEAL
6145-01-509-9838INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
86203

Frequently Asked Questions

What is NSN 5120-01-434-9355?

NSN 5120-01-434-9355 is a Key,socket Head Screw, manufactured by Irwin Industrial Tool Company, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-434-9355?

NSN 5120-01-434-9355 has 1 cross-referenced part number: 86203 (Irwin Industrial Tool Company).

What NSN replaces 5120-01-434-9355?

There are 4 known substitutes for 5120-01-434-9355: 6750-00-304-4863, 1650-00-321-6294, 6515-01-240-5758 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 86203?

Key specifications for 86203: Material: STEEL OVERALL; Surface Treatment: OXIDE OVERALL; Wrenching Surface Size: 0.050 INCHES NOMINAL BOTH ENDS IN; Style Designator: L-HANDLE. 6 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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