PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LKS-440-2EFNut,self-Locking,clinch

Penn Engineering & Manufacturing Corp · NSN 5310-00-053-1366 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-053-1366 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-053-1366. Primary manufacturer part number: LKS-440-2EF.
Features
  • Nut,self-Locking,clinch — FSC 5310
  • Thread Quantity Per Inch: 40
  • Nut Height: 0.189 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND
  • Temp Rating: 450.0 FAHRENHEIT NOMINAL DEGF
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Nut Style: CLINCH
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 5310-00-053-1366, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Penn Engineering & Manufacturing Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 14 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
NSN5310-00-053-1366
Primary Part NumberLKS-440-2EF
Item NameNut,self-Locking,clinch
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPenn Engineering & Manufacturing Corp
StatusCANCELLED
Thread Quantity Per Inch40
Nut Height0.189 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND
Temp Rating450.0 FAHRENHEIT NOMINAL DEGF
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut StyleCLINCH
Hardness Rating70.0 ROCKWELL C MINIMUM
Nominal Thread Size0.112 INCHES IN
Pilot Diameter0.185 INCHES MAXIMUM IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Pilot Length0.054 INCHES MAXIMUM IN
Thread Class3B
Surface TreatmentCADMIUM AND CHROMATE OVERALL
MaterialSTEEL COMP 303 OVERALL
Width Across Flats0.250 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
LubricationDRY FILM LUBRICANT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5310-00-406-5232 INTERCHANGEABLE
Nut,special
5310-01-044-2274M45938/1-5C INTERCHANGEABLE
Nut,plain,clinch
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
2995-01-673-47684132686-01 INTERCHANGEABLE
Tube Assembly,aircraft Engine
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Cross-Reference Index
Part NumberManufacturer
515618 Ail Systems Inc Sub of Eaton Corp (USA)
FD-N0010-018 Raytheon E-Systems, Inc (USA)
04MN009-7 Raytheon Co ESD Long Island Div (USA)
698-066 Parker-Hannifin Corporation Dba Pneutronics Div Fluid Systems Division (USA)
413268-6 Raytheon Company Dba Raytheon (USA)
LKS-440-2EF PRIMARY Penn Engineering & Manufacturing Corp (USA)
LKS440-2 Penn Engineering & Manufacturing Corp (USA)
9335C3005-3 Lockheed Corp Lockheed Electronics Co Inc (USA)
45938-005-01 Us Army Aviation and Missile Command (USA)
10870500-04 General Dynamics Information Systems Inc. Dba General Dynamics Advanced Information Systems (USA)
45073-0006 Honeywell International Inc Dba Honeywell (USA)
P45938-005-01 Us Army Aviation and Missile Command (USA)
263-002-2004 Northrop Grumman Systems Corporation (USA)
247AS-C0402-006 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
1979457P2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
990289-4 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
Related Parts
5310-00-406-5232INTERCHANGEABLE
NUT,SPECIAL
5310-01-044-2274INTERCHANGEABLE
NUT,PLAIN,CLINCH
M45938/1-5C
2995-01-673-4768INTERCHANGEABLE
TUBE ASSEMBLY,AIRCRAFT ENGINE
4132686-01

Frequently Asked Questions

What is NSN 5310-00-053-1366?

NSN 5310-00-053-1366 is a Nut,self-Locking,clinch, manufactured by Penn Engineering & Manufacturing Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-053-1366?

NSN 5310-00-053-1366 has 16 cross-referenced part numbers: 515618 (Ail Systems Inc Sub of Eaton Corp), FD-N0010-018 (Raytheon E-Systems, Inc), 04MN009-7 (Raytheon Co ESD Long Island Div), 698-066 (Parker-Hannifin Corporation Dba Pneutronics Div Fluid Systems Division), 413268-6 (Raytheon Company Dba Raytheon) and 11 more.

What NSN replaces 5310-00-053-1366?

There are 3 known substitutes for 5310-00-053-1366: 5310-00-406-5232, 5310-01-044-2274, 2995-01-673-4768. Verify interchangeability with system specifications before substitution.

What are the specifications of LKS-440-2EF?

Key specifications for LKS-440-2EF: Thread Quantity Per Inch: 40; Nut Height: 0.189 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Temp Rating: 450.0 FAHRENHEIT NOMINAL DEGF. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-053-1366 still in active supply?

NSN 5310-00-053-1366 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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