PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FFW84CLASSASTYLE4Washer,lock

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5310-00-050-2342 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-050-2342 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-050-2342. Primary manufacturer part number: FFW84CLASSASTYLE4.
Features
  • Washer,lock — FSC 5310
  • Material: STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Surface Treatment Document and Classification: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
  • Material Thickness: 0.162 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
  • Hole Diameter: 0.509 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1060 or Steel Comp 1561 or Steel Comp 1064 or Steel Comp 1065 or Steel Comp 1566 or Steel Comp 1069 or Steel Comp 1070 or Steel Comp 1071 or Steel Comp 1572 or Steel Comp 1074 or Steel Comp 1075 or Steel Comp 1078 or Steel Comp 1080 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-050-2342, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 10 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-050-2342
Primary Part NumberFFW84CLASSASTYLE4
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
MaterialSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Surface Treatment Document and ClassificationQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
Material Thickness0.162 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
Hole Diameter0.509 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Style DesignatorSPLIT HELICAL-RIGHT HAND
Nondefinitive Spec/std Data4 STYLE AND A CLASS
Outside Diameter0.939 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5310-00-050-2331 INTERCHANGEABLE
Washer,lock
5310-00-209-5122 INTERCHANGEABLE
Washer,lock
5310-00-262-3522 INTERCHANGEABLE
Washer,lock
5310-00-262-3531 INTERCHANGEABLE
Washer,lock
5310-00-721-7809 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
FFW84CLASSASTYLE4 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
MS35340-29 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-050-2331INTERCHANGEABLE
WASHER,LOCK
5310-00-209-5122INTERCHANGEABLE
WASHER,LOCK
5310-00-262-3522INTERCHANGEABLE
WASHER,LOCK
5310-00-262-3531INTERCHANGEABLE
WASHER,LOCK
5310-00-721-7809INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-00-050-2342?

NSN 5310-00-050-2342 is a Washer,lock, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-050-2342?

NSN 5310-00-050-2342 has 2 cross-referenced part numbers: FFW84CLASSASTYLE4 (Federal Specifications Promulgated by General Services Administration Washington DC), MS35340-29 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-050-2342?

There are 5 known substitutes for 5310-00-050-2342: 5310-00-050-2331, 5310-00-209-5122, 5310-00-262-3522 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FFW84CLASSASTYLE4?

Key specifications for FFW84CLASSASTYLE4: Material: STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Surface Treatment Document and Classification: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Material Thickness: 0.162 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-050-2342 still in active supply?

NSN 5310-00-050-2342 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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