PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-1222,TYIII,GR 7,STYAL1Nut,plain,hexagon

Naval Inventory Control Point Mechanicsburg · NSN 5310-01-383-3321 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-383-3321 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-383-3321. Primary manufacturer part number: MIL-DTL-1222,TYIII,GR 7,STYAL1.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Class: 2B
  • Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
  • Thread Quantity Per Inch: 12
  • Nominal Thread Size: 0.562 INCHES IN
  • Criticality Code Justification: ZZZW
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • 3 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-383-3321, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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: Active.

Technical Specifications
ParameterValue
NSN5310-01-383-3321
Primary Part NumberMIL-DTL-1222,TYIII,GR 7,STYAL1
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Thread Class2B
Departure From Cited DocumentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
Thread Quantity Per Inch12
Nominal Thread Size0.562 INCHES IN
Criticality Code JustificationZZZW
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5310-01-383-3203 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3251 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3345 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3347 INTERCHANGEABLE
Nut,plain,hexagon
5310-01-383-3351 INTERCHANGEABLE
Nut,heavy,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-1222,TYIII,GR 7,STYAL1 Naval Inventory Control Point Mechanicsburg (USA)
MIL-DTL-1222,TYIII,GR 7,STYA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-1222 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-01-383-3203INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3251INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3345INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3347INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-01-383-3351INTERCHANGEABLE
NUT,HEAVY,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 5310-01-383-3321?

NSN 5310-01-383-3321 is a Nut,plain,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-383-3321?

NSN 5310-01-383-3321 has 3 cross-referenced part numbers: MIL-DTL-1222,TYIII,GR 7,STYAL1 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222,TYIII,GR 7,STYA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-1222 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-01-383-3321?

There are 8 known substitutes for 5310-01-383-3321: 5310-01-383-3203, 5310-01-383-3251, 5310-01-383-3345 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-1222,TYIII,GR 7,STYAL1?

Key specifications for MIL-DTL-1222,TYIII,GR 7,STYAL1: Thread Class: 2B; Departure From Cited Document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS; Thread Quantity Per Inch: 12; Nominal Thread Size: 0.562 INCHES IN. 6 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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