PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DF330644 FIND 121Screw,cap,socket Head

Naval Sea Systems Command · NSN 5305-01-343-7237 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-343-7237 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-343-7237. Primary manufacturer part number: DF330644 FIND 121.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Series Designator: UNRC
  • Material: NICKEL ALLOY OVERALL
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Thread Quantity Per Inch: 10
  • 4 verified cross-references
  • Primary manufacturer: Naval Sea Systems Command
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy Overall construction
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-343-7237, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-343-7237
Primary Part NumberDF330644 FIND 121
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Thread Series DesignatorUNRC
MaterialNICKEL ALLOY OVERALL
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Thread Quantity Per Inch10
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-01-417-7135 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
DF330644 FIND 121 Naval Sea Systems Command (USA)
801-6408784 FIND 121 Naval Sea Systems Command (USA)
DF330644 FIND 121L1 Naval Inventory Control Point Mechanicsburg (USA)
801-6408784 FIND 121L1 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5305-01-417-7135INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5305-01-343-7237?

NSN 5305-01-343-7237 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-343-7237?

NSN 5305-01-343-7237 has 4 cross-referenced part numbers: DF330644 FIND 121 (Naval Sea Systems Command), 801-6408784 FIND 121 (Naval Sea Systems Command), DF330644 FIND 121L1 (Naval Inventory Control Point Mechanicsburg), 801-6408784 FIND 121L1 (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 5305-01-343-7237?

There is 1 known substitute for 5305-01-343-7237: 5305-01-417-7135. Verify interchangeability with system specifications before substitution.

What are the specifications of DF330644 FIND 121?

Key specifications for DF330644 FIND 121: End Item Identification: VALVE,BALL,TOP-LOAD; Thread Series Designator: UNRC; Material: NICKEL ALLOY OVERALL; Criticality Code Justification: ZZZY. 7 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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