PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M45938/6-5CNut,self-Locking,clinch

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-01-127-0884 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-127-0884 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-127-0884. Primary manufacturer part number: M45938/6-5C.
Features
  • Nut,self-Locking,clinch — FSC 5310
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Thread Quantity Per Inch: 32
  • Nominal Thread Size: 0.138 INCHES IN
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 303 OVERALL
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: PASSIVATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-01-127-0884, is classified within Federal Supply Class 5310 (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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-127-0884
Primary Part NumberM45938/6-5C
Item NameNut,self-Locking,clinch
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Thread Quantity Per Inch32
Nominal Thread Size0.138 INCHES IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 303 OVERALL
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentPASSIVATE OVERALL
Temp Rating450.0 FAHRENHEIT MAXIMUM DEGF
Nut Diameter0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Pilot Diameter0.190 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN
Pilot Length0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nut Height0.147 INCHES MINIMUM AND 0.173 INCHES MAXIMUM IN
Thread Class3B
Nut StyleCLINCH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5310-00-538-7802 INTERCHANGEABLE
Nut,self-Locking,spline
5310-00-549-6821 INTERCHANGEABLE
Nut,self-Locking,spline
5310-00-984-5543 INTERCHANGEABLE
Nut,self-Locking,spline
5310-01-015-8792M45938/6-4S INTERCHANGEABLE
Nut,self-Locking,clinch
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-044-6577 INTERCHANGEABLE
Nut,self-Locking,clinch
5310-01-090-7190 INTERCHANGEABLE
Nut,self-Locking,clinch
5310-01-131-2253 INTERCHANGEABLE
Nut,self-Locking,clinch
5310-01-155-1901M45938/6-4C INTERCHANGEABLE
Nut,self-Locking,clinch
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-285-1720 INTERCHANGEABLE
Nut,self-Locking,clinch
Cross-Reference Index
Part NumberManufacturer
M45938/6-5C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-N-45938/6 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-538-7802INTERCHANGEABLE
NUT,SELF-LOCKING,SPLINE
5310-00-549-6821INTERCHANGEABLE
NUT,SELF-LOCKING,SPLINE
5310-00-984-5543INTERCHANGEABLE
NUT,SELF-LOCKING,SPLINE
5310-01-015-8792INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH
M45938/6-4S
5310-01-044-6577INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH
5310-01-090-7190INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH
5310-01-131-2253INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH
5310-01-155-1901INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH
M45938/6-4C
5310-01-285-1720INTERCHANGEABLE
NUT,SELF-LOCKING,CLINCH

Frequently Asked Questions

What is NSN 5310-01-127-0884?

NSN 5310-01-127-0884 is a Nut,self-Locking,clinch, manufactured by Military Specifications Promulgated by Military Departments/agencies 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 5310-01-127-0884?

NSN 5310-01-127-0884 has 2 cross-referenced part numbers: M45938/6-5C (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-N-45938/6 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-01-127-0884?

There are 9 known substitutes for 5310-01-127-0884: 5310-00-538-7802, 5310-00-549-6821, 5310-00-984-5543 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M45938/6-5C?

Key specifications for M45938/6-5C: Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Thread Quantity Per Inch: 32; Nominal Thread Size: 0.138 INCHES IN; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL. 16 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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