PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-1222 TYPE 2 GRADE 500Screw,cap,socket Head

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-01-337-3788 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-337-3788 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-337-3788. Primary manufacturer part number: MIL-DTL-1222 TYPE 2 GRADE 500.
Features
  • Screw,cap,socket Head — FSC 5305
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Diameter: 0.500 INCHES IN
  • Material Document and Classification: QQ-N-286,CL A 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
  • Thread Series Designator: UNRC
  • Fastener Length: 1.500 INCHES NOMINAL 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 5305-01-337-3788, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 34 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-01-337-3788
Primary Part NumberMIL-DTL-1222 TYPE 2 GRADE 500
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Thread DirectionRIGHT-HAND
Nominal Thread Diameter0.500 INCHES IN
Material Document and ClassificationQQ-N-286,CL A 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
Thread Series DesignatorUNRC
Fastener Length1.500 INCHES NOMINAL IN
Criticality Code JustificationZZZX
Thread Class3A A
Thread Quantity Per Inch13
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5305-01-420-8872211068639 INTERCHANGEABLE
Screw,cap,socket Head
Naval Sea Systems Command
5305-01-458-5071801-6408783 FIND 34 INTERCHANGEABLE
Screw,cap,socket Head
Naval Sea Systems Command
5305-01-671-2716 INTERCHANGEABLE
Screw,cap,socket Head
5305-01-673-9246 INTERCHANGEABLE
Screw,cap,socket Head
5306-01-673-9291 INTERCHANGEABLE
Bolt,machine
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-1222 TYPE 2 GRADE 500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
801-6408783 FIND 34L1 Naval Inventory Control Point Mechanicsburg (USA)
CD-023-15-34 Naval Sea Systems Command (USA)
0.500-13UNRC-3AX1.500LGL1 Naval Inventory Control Point Mechanicsburg (USA)
150-7384669 ITEM 85L1 Naval Inventory Control Point Mechanicsburg (USA)
DF330643 FIND 34 Naval Sea Systems Command (USA)
DF330643 FIND 33 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
211068639 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
DF330643 FIND 35L1 Naval Inventory Control Point Mechanicsburg (USA)
1/2-13UNRC-3A X 1 1/2INL1 Naval Inventory Control Point Mechanicsburg (USA)
801-6408783 FIND 35 Naval Sea Systems Command (USA)
MIL-DTL-1222-TY2-GR500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7550478-DF330643-97-35L1 Naval Inventory Control Point Mechanicsburg (USA)
DF330643 FIND 34L1 Naval Inventory Control Point Mechanicsburg (USA)
1/2-13UNRC-3A X 1 1/2IN Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
801-6408783 FIND 33L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 TYPE 2 GRADE 500L1 Naval Inventory Control Point Mechanicsburg (USA)
0.500-13UNRC-3AX1.500LG Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
DF330643 FIND 35 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
DF330643 FIND 34 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
Related Parts
5305-01-420-8872INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
211068639
5305-01-458-5071INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
801-6408783 FIND 34
5305-01-671-2716INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5305-01-673-9246INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5306-01-673-9291INTERCHANGEABLE
BOLT,MACHINE

Frequently Asked Questions

What is NSN 5305-01-337-3788?

NSN 5305-01-337-3788 is a Screw,cap,socket Head, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-01-337-3788?

NSN 5305-01-337-3788 has 34 cross-referenced part numbers: MIL-DTL-1222 TYPE 2 GRADE 500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 801-6408783 FIND 34L1 (Naval Inventory Control Point Mechanicsburg), CD-023-15-34 (Naval Sea Systems Command), 0.500-13UNRC-3AX1.500LGL1 (Naval Inventory Control Point Mechanicsburg), 150-7384669 ITEM 85L1 (Naval Inventory Control Point Mechanicsburg) and 29 more.

What NSN replaces 5305-01-337-3788?

There are 5 known substitutes for 5305-01-337-3788: 5305-01-420-8872, 5305-01-458-5071, 5305-01-671-2716 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-1222 TYPE 2 GRADE 500?

Key specifications for MIL-DTL-1222 TYPE 2 GRADE 500: Thread Direction: RIGHT-HAND; Nominal Thread Diameter: 0.500 INCHES IN; Material Document and Classification: QQ-N-286,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: NICKEL ALLOY OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-01-337-3788 still in active supply?

NSN 5305-01-337-3788 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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