PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS16992-566Screw,lag

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5305-00-406-5199 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-406-5199 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-406-5199. Primary manufacturer part number: MS16992-566.
Features
  • Screw,lag — FSC 5305
  • Material: STEEL OVERALL
  • Head Height: 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
  • Nonmachine Nominal Thread Diameter: 0.437 INCHES IN
  • Fastener Length: 4.000 INCHES NOMINAL IN
  • Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA)
  • Minimum Tensile Strength: 55000 POUNDS PER SQUARE INCH LBS
  • Surface Treatment Document and Classification: ASTM A153-60 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,lag, cataloged under National Stock Number 5305-00-406-5199, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-406-5199
Primary Part NumberMS16992-566
Item NameScrew,lag
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
MaterialSTEEL OVERALL
Head Height0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
Nonmachine Nominal Thread Diameter0.437 INCHES IN
Fastener Length4.000 INCHES NOMINAL IN
Nonmachine Thread StyleGIMLET POINT (TYPE A, AB OR BA)
Minimum Tensile Strength55000 POUNDS PER SQUARE INCH LBS
Surface Treatment Document and ClassificationASTM A153-60 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Shoulder Length0.156 INCHES MINIMUM FIRST SHOULDER IN
Material Document and ClassificationFF-B-561,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nondefinitive Spec/std Data1 TYPE AND 1 STYLE AND B GRADE
Shoulder ShapeROUND FIRST SHOULDER
Surface TreatmentZINC OVERALL
Width Between Flats0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
Shoulder Diameter0.421 INCHES MINIMUM AND 0.452 INCHES MAXIMUM FIRST SHOULDER IN
Hardness Rating60.0 ROCKWELL B MINIMUM OVERALL
Head StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5305-00-177-5624 INTERCHANGEABLE
Screw,lag
5305-00-407-6543 INTERCHANGEABLE
Screw,lag
5305-00-449-2240 INTERCHANGEABLE
Screw,lag
Cross-Reference Index
Part NumberManufacturer
MS16992-566 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FF-B-561D Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5305-00-177-5624INTERCHANGEABLE
SCREW,LAG
5305-00-407-6543INTERCHANGEABLE
SCREW,LAG
5305-00-449-2240INTERCHANGEABLE
SCREW,LAG

Frequently Asked Questions

What is NSN 5305-00-406-5199?

NSN 5305-00-406-5199 is a Screw,lag, manufactured by Military Standards Promulgated by Military Departments 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 5305-00-406-5199?

NSN 5305-00-406-5199 has 2 cross-referenced part numbers: MS16992-566 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FF-B-561D (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-406-5199?

There are 3 known substitutes for 5305-00-406-5199: 5305-00-177-5624, 5305-00-407-6543, 5305-00-449-2240. Verify interchangeability with system specifications before substitution.

What are the specifications of MS16992-566?

Key specifications for MS16992-566: Material: STEEL OVERALL; Head Height: 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN; Nonmachine Nominal Thread Diameter: 0.437 INCHES IN; Fastener Length: 4.000 INCHES NOMINAL IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-406-5199 still in active supply?

NSN 5305-00-406-5199 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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