PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-1222L1Nut,heavy,hexagon

Naval Inventory Control Point Mechanicsburg · NSN 5310-01-383-3351 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-383-3351 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-383-3351. Primary manufacturer part number: MIL-DTL-1222L1.
Features
  • Nut,heavy,hexagon — FSC 5310
  • Criticality Code Justification: ZZZW
  • Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • 4 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,heavy,hexagon, cataloged under National Stock Number 5310-01-383-3351, is classified within Federal Supply Class 5310 (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 2 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-01-383-3351
Primary Part NumberMIL-DTL-1222L1
Item NameNut,heavy,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusCANCELLED
Criticality Code JustificationZZZW
Departure From Cited DocumentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5310-01-383-3203 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3251 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3321 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3345 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3347 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3376 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-386-9756 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-386-9797 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-1222L1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222,TYIII,GR7,STY A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222,TYIII,GR7,STAL1 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5310-01-383-3203INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3251INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3321INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3345INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3347INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3376INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-386-9756INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-386-9797INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-01-383-3351?

NSN 5310-01-383-3351 is a Nut,heavy,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-01-383-3351?

NSN 5310-01-383-3351 has 4 cross-referenced part numbers: MIL-DTL-1222L1 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222,TYIII,GR7,STY A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222,TYIII,GR7,STAL1 (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 5310-01-383-3351?

There are 8 known substitutes for 5310-01-383-3351: 5310-01-383-3203, 5310-01-383-3251, 5310-01-383-3321 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-1222L1?

Key specifications for MIL-DTL-1222L1: Criticality Code Justification: ZZZW; Part Name Assigned by Controlling Agency: HEAVY HEX NUT; Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-01-383-3351 still in active supply?

NSN 5310-01-383-3351 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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