PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

107078Washer,lock

L3harris Technologies, Inc. Dba Harris Corporation · NSN 5310-00-344-3681 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-344-3681 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-344-3681. Primary manufacturer part number: 107078.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 9.0 ROCKWELL C NOMINAL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Thickness: 0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
  • Hole Diameter: 0.088 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
  • Outside Diameter: 0.165 INCHES NOMINAL IN
  • Material: COPPER OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-344-3681, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Technologies, Inc. Dba Harris Corporation. Government technical data includes 9 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-344-3681
Primary Part Number107078
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Dba Harris Corporation
StatusACTIVE
Hardness Rating9.0 ROCKWELL C NOMINAL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
Hole Diameter0.088 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
Outside Diameter0.165 INCHES NOMINAL IN
MaterialCOPPER OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationASTM B159 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentCADMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3020-00-065-1288107078 INTERCHANGEABLE
Gear,compound
General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems
5365-01-217-4279SDS 134 INTERCHANGEABLE
Bushing,tapered
TB Woods's Corporation
5340-01-407-3426 INTERCHANGEABLE
Hinge,butt
6685-01-595-102210-7078 INTERCHANGEABLE
Indicator,temperature,thermocoup
Simtek, Inc. Dba Simtek Inc
Cross-Reference Index
Part NumberManufacturer
107078 PRIMARY L3harris Technologies, Inc. Dba Harris Corporation (USA)
107078 Itt Industries Inc Itt Aerospace Communications Div East (USA)
Related Parts
3020-00-065-1288INTERCHANGEABLE
GEAR,COMPOUND
107078
5365-01-217-4279INTERCHANGEABLE
BUSHING,TAPERED
SDS 134
5340-01-407-3426INTERCHANGEABLE
HINGE,BUTT
6685-01-595-1022INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
10-7078

Frequently Asked Questions

What is NSN 5310-00-344-3681?

NSN 5310-00-344-3681 is a Washer,lock, manufactured by L3harris Technologies, Inc. Dba Harris Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-344-3681?

NSN 5310-00-344-3681 has 2 cross-referenced part numbers: 107078 (L3harris Technologies, Inc. Dba Harris Corporation), 107078 (Itt Industries Inc Itt Aerospace Communications Div East).

What NSN replaces 5310-00-344-3681?

There are 4 known substitutes for 5310-00-344-3681: 3020-00-065-1288, 5365-01-217-4279, 5340-01-407-3426 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 107078?

Key specifications for 107078: Hardness Rating: 9.0 ROCKWELL C NOMINAL; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Thickness: 0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN; Hole Diameter: 0.088 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN. 9 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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