PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

84905Washer,flat

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 5310-00-091-7018 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-091-7018 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-091-7018. Primary manufacturer part number: 84905.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.060 INCHES NOMINAL IN
  • Material: STEEL COMP 8740 OVERALL
  • Hole Diameter: 1.020 INCHES NOMINAL IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.680 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 8740 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-091-7018, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-091-7018
Primary Part Number84905
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusACTIVE
Thickness0.060 INCHES NOMINAL IN
MaterialSTEEL COMP 8740 OVERALL
Hole Diameter1.020 INCHES NOMINAL IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Overall Diameter1.680 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-6049 MIL SPEC ALL MATERIAL RESPONSES OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5340-00-090-47428681938P1 INTERCHANGEABLE
Cap,protective,dust and Moisture
General Electric Company
Cross-Reference Index
Part NumberManufacturer
84905 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Related Parts
5340-00-090-4742INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
8681938P1

Frequently Asked Questions

What is NSN 5310-00-091-7018?

NSN 5310-00-091-7018 is a Washer,flat, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-091-7018?

NSN 5310-00-091-7018 has 1 cross-referenced part number: 84905 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

What NSN replaces 5310-00-091-7018?

There is 1 known substitute for 5310-00-091-7018: 5340-00-090-4742. Verify interchangeability with system specifications before substitution.

What are the specifications of 84905?

Key specifications for 84905: Thickness: 0.060 INCHES NOMINAL IN; Material: STEEL COMP 8740 OVERALL; Hole Diameter: 1.020 INCHES NOMINAL IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM. 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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