PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LH3858-40Nut,self-Locking,extended Washer

Esna, Llc · NSN 5310-01-050-3015 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-050-3015 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-050-3015. Primary manufacturer part number: LH3858-40.
Features
  • Nut,self-Locking,extended Washer — FSC 5310
  • Thread Series: UNJC
  • Nut Style: HEXAGON
  • Thread Class: 3B
  • Material Document and Classification: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment Document and Classification: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • Nominal Thread Size: 0.112 INCHES IN
  • Thread Quantity Per Inch: 40
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Iron Alloy 660 Overall construction
General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-050-3015, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Esna, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-01-050-3015
Primary Part NumberLH3858-40
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerEsna, Llc
StatusCANCELLED
Thread SeriesUNJC
Nut StyleHEXAGON
Thread Class3B
Material Document and ClassificationAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Nominal Thread Size0.112 INCHES IN
Thread Quantity Per Inch40
Washer Outside Diameter0.182 INCHES MINIMUM IN
Width Across Flats0.150 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
Washer Thickness0.010 INCHES MINIMUM IN
Temp Rating900.0 FAHRENHEIT NOMINAL DEGF
MaterialIRON ALLOY 660 OVERALL
Thread DirectionRIGHT-HAND
Surface TreatmentSILVER OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5310-00-878-3292MS21043-04 INTERCHANGEABLE
Nut,self-Locking,extended Washer
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
10122053 Nimikkeistokeskus Ncb Finland (FIN)
SM-A-858698-2 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
21786-824 Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR)
LH3858-40 PRIMARY Esna, Llc (USA)
LH3858-40 Harvard Industries Inc (USA)
Related Parts
5310-00-878-3292INTERCHANGEABLE
NUT,SELF-LOCKING,EXTENDED WASHER
MS21043-04

Frequently Asked Questions

What is NSN 5310-01-050-3015?

NSN 5310-01-050-3015 is a Nut,self-Locking,extended Washer, manufactured by Esna, Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-01-050-3015?

NSN 5310-01-050-3015 has 5 cross-referenced part numbers: 10122053 (Nimikkeistokeskus Ncb Finland), SM-A-858698-2 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 21786-824 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil), LH3858-40 (Esna, Llc), LH3858-40 (Harvard Industries Inc).

What NSN replaces 5310-01-050-3015?

There is 1 known substitute for 5310-01-050-3015: 5310-00-878-3292. Verify interchangeability with system specifications before substitution.

What are the specifications of LH3858-40?

Key specifications for LH3858-40: Thread Series: UNJC; Nut Style: HEXAGON; Thread Class: 3B; Material Document and Classification: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-01-050-3015 still in active supply?

NSN 5310-01-050-3015 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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