PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

593-6405216 FIND 81Screw,cap,socket Head

Naval Sea Systems Command · NSN 5305-01-398-9866 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-398-9866 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-398-9866. Primary manufacturer part number: 593-6405216 FIND 81.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Quantity Per Inch: 16
  • Fastener Length: 1.500 INCHES MAXIMUM IN
  • Thread Series Designator: UNRC
  • Material Document and Classification: QQ-N-286 GR500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: NICKEL ALLOY OVERALL
  • Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Criticality Code Justification: ZZZX
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 5305-01-398-9866, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-398-9866
Primary Part Number593-6405216 FIND 81
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Thread Quantity Per Inch16
Fastener Length1.500 INCHES MAXIMUM IN
Thread Series DesignatorUNRC
Material Document and ClassificationQQ-N-286 GR500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialNICKEL ALLOY OVERALL
Departure From Cited DesignatorMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Criticality Code JustificationZZZX
Thread Class3A A
Nominal Thread Diameter0.375 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-01-299-6598 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-354-4678 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-393-7488 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-393-7498 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-393-7802 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-398-9865 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-400-3360 INTERCHANGEABLE
Screw,machine
5305-01-406-8548 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-417-7135 INTERCHANGEABLE
Screw,cap,hexagon Head
5305-01-423-3144 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
593-6405216 FIND 81 Naval Sea Systems Command (USA)
211067262L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 TYPE 2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
0.375-16UNRC-3A X 1.500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222 TYPE 2L1 Naval Inventory Control Point Mechanicsburg (USA)
211067262 Naval Sea Systems Command (USA)
MIL-DTL-1222TYIIGR500 SLF-LKG Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6405216 FIND 81L1 Naval Inventory Control Point Mechanicsburg (USA)
593-6405216 FIND 81L1 Naval Inventory Control Point Mechanicsburg (USA)
6405216 FIND 81 Naval Sea Systems Command (USA)
0.375-16UNRC-3A X 1.500L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222TYIIGR500 SLF-LKGL1 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5305-01-299-6598INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-354-4678INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-393-7488INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-393-7498INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-393-7802INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-398-9865INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-400-3360INTERCHANGEABLE
SCREW,MACHINE
5305-01-406-8548INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-417-7135INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5305-01-423-3144INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-423-8879INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-433-3816INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5305-01-398-9866?

NSN 5305-01-398-9866 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 5305-01-398-9866?

NSN 5305-01-398-9866 has 12 cross-referenced part numbers: 593-6405216 FIND 81 (Naval Sea Systems Command), 211067262L1 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 TYPE 2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 0.375-16UNRC-3A X 1.500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222 TYPE 2L1 (Naval Inventory Control Point Mechanicsburg) and 7 more.

What NSN replaces 5305-01-398-9866?

There are 12 known substitutes for 5305-01-398-9866: 5305-01-299-6598, 5305-01-354-4678, 5305-01-393-7488 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 593-6405216 FIND 81?

Key specifications for 593-6405216 FIND 81: Special Features: SCREW, CAP, SOCKET HEAD, SELF LOCKING (REQUESTED NAME); Thread Quantity Per Inch: 16; End Item Identification: TRASH EJECTOR ASSY; Fastener Length: 1.500 INCHES MAXIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com