PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FF-W-84A CL B ST 3Washer,lock

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5310-00-184-9138 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-184-9138 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-184-9138. Primary manufacturer part number: FF-W-84A CL B ST 3.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Hole Diameter: 0.102 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
  • Material: STEEL COMP 420 OVERALL
  • Outside Diameter: 0.212 INCHES NOMINAL IN
  • Surface Treatment: PASSIVATE OVERALL
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Material Thickness: 0.031 INCHES MINIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 420 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-184-9138, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-184-9138
Primary Part NumberFF-W-84A CL B ST 3
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Hole Diameter0.102 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
MaterialSTEEL COMP 420 OVERALL
Outside Diameter0.212 INCHES NOMINAL IN
Surface TreatmentPASSIVATE OVERALL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness0.031 INCHES MINIMUM IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Nondefinitive Spec/std DataB CLASS AND 3 STYLE
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-054-1838 INTERCHANGEABLE
Washer,lock
5310-00-054-1839541839 INTERCHANGEABLE
Washer,lock
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
FF-W-84A CL B ST 3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
503A1-62 Cardwell Condenser Corp Lapointe-Admiral Div (USA)
414908PC113 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
FFW84CLASSBSTYLE3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5310-00-054-1838INTERCHANGEABLE
WASHER,LOCK
5310-00-054-1839INTERCHANGEABLE
WASHER,LOCK
541839

Frequently Asked Questions

What is NSN 5310-00-184-9138?

NSN 5310-00-184-9138 is a Washer,lock, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-184-9138?

NSN 5310-00-184-9138 has 4 cross-referenced part numbers: FF-W-84A CL B ST 3 (Federal Specifications Promulgated by General Services Administration Washington DC), 503A1-62 (Cardwell Condenser Corp Lapointe-Admiral Div), 414908PC113 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), FFW84CLASSBSTYLE3 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5310-00-184-9138?

There are 2 known substitutes for 5310-00-184-9138: 5310-00-054-1838, 5310-00-054-1839. Verify interchangeability with system specifications before substitution.

What are the specifications of FF-W-84A CL B ST 3?

Key specifications for FF-W-84A CL B ST 3: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Hole Diameter: 0.102 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN; Material: STEEL COMP 420 OVERALL; Outside Diameter: 0.212 INCHES NOMINAL IN. 10 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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