PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS16203-7Nut,plain,hexagon

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-543-5630 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-543-5630 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-543-5630. Primary manufacturer part number: MS16203-7.
Features
  • Nut,plain,hexagon — FSC 5310
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Thread Direction: RIGHT-HAND
  • Nut Style: HEXAGON
  • Bearing Surface Type: CHAMFERED
  • Nominal Thread Size: 0.750 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 10
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 303 or Steel Comp 304 or Steel Comp 305 or Steel Comp 316 or Steel Comp 310 Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-543-5630, is classified within Federal Supply Class 5310 (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 13 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: Active.

Technical Specifications
ParameterValue
NSN5310-00-543-5630
Primary Part NumberMS16203-7
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
Bearing Surface TypeCHAMFERED
Nominal Thread Size0.750 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch10
Width Across Flats1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-763 OR QQ-W-423 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-763 OR QQ-W-423 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-763 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-763 OR QQ-W-423 FED SPEC 5TH MATERIAL RESPONSE OR QQ-W-423 FED SPEC 6TH MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 310 OVERALL
Surface TreatmentPASSIVATE OVERALL
Nut Height0.617 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN
Thread Class2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-543-5626 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-543-5627 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-543-5628 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
MS16203-7 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MILF19700CLASSCTYPE2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-543-5626INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-543-5627INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-543-5628INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-543-5630?

NSN 5310-00-543-5630 is a Nut,plain,hexagon, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-543-5630?

NSN 5310-00-543-5630 has 2 cross-referenced part numbers: MS16203-7 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MILF19700CLASSCTYPE2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-543-5630?

There are 3 known substitutes for 5310-00-543-5630: 5310-00-543-5626, 5310-00-543-5627, 5310-00-543-5628. Verify interchangeability with system specifications before substitution.

What are the specifications of MS16203-7?

Key specifications for MS16203-7: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Direction: RIGHT-HAND; Nut Style: HEXAGON; Bearing Surface Type: CHAMFERED. 13 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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