PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

346159 PC1Key,socket Head Screw

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5120-00-221-8050 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-221-8050 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-221-8050. Primary manufacturer part number: 346159 PC1.
Features
  • Key,socket Head Screw — FSC 5120
  • Wrenching Surface Size: 0.094 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Shape: HEXAGON SINGLE END EXTERNAL
  • Surface Treatment: ZINC OVERALL
  • Style Designator: FIXED T-HANDLE
  • Material: STEEL OVERALL
  • 3 verified cross-references
  • Primary manufacturer: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
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 5120-00-221-8050, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 5 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-221-8050
Primary Part Number346159 PC1
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusCANCELLED
Wrenching Surface Size0.094 INCHES NOMINAL SINGLE END IN
Wrenching Surface ShapeHEXAGON SINGLE END EXTERNAL
Surface TreatmentZINC OVERALL
Style DesignatorFIXED T-HANDLE
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5330-00-360-849727233C INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
2940-01-003-94093515996 INTERCHANGEABLE
Filter Element,fluid
Chrysler Corp Service and Parts Opns
Cross-Reference Index
Part NumberManufacturer
346159 PC1 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
SC-DL-77126 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
51707 Kleinschmidt Inc (USA)
Related Parts
5330-00-360-8497INTERCHANGEABLE
GASKET
27233C
2940-01-003-9409INTERCHANGEABLE
FILTER ELEMENT,FLUID
3515996

Frequently Asked Questions

What is NSN 5120-00-221-8050?

NSN 5120-00-221-8050 is a Key,socket Head Screw, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-221-8050?

NSN 5120-00-221-8050 has 3 cross-referenced part numbers: 346159 PC1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), SC-DL-77126 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 51707 (Kleinschmidt Inc).

What NSN replaces 5120-00-221-8050?

There are 2 known substitutes for 5120-00-221-8050: 5330-00-360-8497, 2940-01-003-9409. Verify interchangeability with system specifications before substitution.

What are the specifications of 346159 PC1?

Key specifications for 346159 PC1: Wrenching Surface Size: 0.094 INCHES NOMINAL SINGLE END IN; Wrenching Surface Shape: HEXAGON SINGLE END EXTERNAL; Overall Length: 6.562 INCHES NOMINAL IN; Surface Treatment: ZINC OVERALL. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-221-8050 still in active supply?

NSN 5120-00-221-8050 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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