PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-1222 TYIIL1Screw,cap,socket Head

Naval Inventory Control Point Mechanicsburg · NSN 5305-01-433-3816 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-433-3816 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-433-3816. Primary manufacturer part number: MIL-DTL-1222 TYIIL1.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Class: 3A A
  • Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Material: NICKEL ALLOY OVERALL
  • Material Document and Classification: QQ-N-286 GR500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Criticality Code Justification: ZZZX
  • Fastener Length: 1.000 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.312 INCHES IN
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 5305-01-433-3816, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 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
NSN5305-01-433-3816
Primary Part NumberMIL-DTL-1222 TYIIL1
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Thread Class3A A
Departure From Cited DesignatorMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
MaterialNICKEL ALLOY OVERALL
Material Document and ClassificationQQ-N-286 GR500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Criticality Code JustificationZZZX
Fastener Length1.000 INCHES MAXIMUM IN
Nominal Thread Diameter0.312 INCHES IN
Thread Quantity Per Inch18
Thread Series DesignatorUNRC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-01-299-6598 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-303-4053 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-346-1579 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-348-1724 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
5305-01-393-7708 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-398-9865 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-398-9866 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-1222 TYIIL1 Naval Inventory Control Point Mechanicsburg (USA)
211067319 Naval Sea Systems Command (USA)
0.312-18UNRC-3A X 1.000L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 TYIIGR500 SLF-LKGL1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 TYII GR500 SLF-LKG Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222 TYII Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
211067319L1 Naval Inventory Control Point Mechanicsburg (USA)
0.312-18UNRC-3A X 1.000 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-01-299-6598INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-303-4053INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-346-1579INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-348-1724INTERCHANGEABLE
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
5305-01-393-7708INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-398-9865INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-398-9866INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-400-3360INTERCHANGEABLE
SCREW,MACHINE
5305-01-406-8548INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 5305-01-433-3816?

NSN 5305-01-433-3816 is a Screw,cap,socket Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-433-3816?

NSN 5305-01-433-3816 has 8 cross-referenced part numbers: MIL-DTL-1222 TYIIL1 (Naval Inventory Control Point Mechanicsburg), 211067319 (Naval Sea Systems Command), 0.312-18UNRC-3A X 1.000L1 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 TYIIGR500 SLF-LKGL1 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 TYII GR500 SLF-LKG (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 5305-01-433-3816?

There are 12 known substitutes for 5305-01-433-3816: 5305-01-299-6598, 5305-01-303-4053, 5305-01-346-1579 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-1222 TYIIL1?

Key specifications for MIL-DTL-1222 TYIIL1: Special Features: SCREW, CAP, SOCKET HEAD, SELF LOCKING (REQUESTED NAME); Thread Class: 3A A; End Item Identification: MECH DETENT; Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 11 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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