PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77322Washer,flat

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-00-166-1446 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-166-1446 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-166-1446. Primary manufacturer part number: 77322.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.086 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
  • Hardness Rating: 90.0 ROCKWELL B MINIMUM AND 102.0 ROCKWELL B MAXIMUM
  • Surface Treatment: CADMIUM OVERALL
  • Material: STEEL OVERALL
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.500 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-166-1446, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. 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
NSN5310-00-166-1446
Primary Part Number77322
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Thickness0.086 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN
Hardness Rating90.0 ROCKWELL B MINIMUM AND 102.0 ROCKWELL B MAXIMUM
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL OVERALL
Peripheral Shape StyleROUND
Overall Diameter0.500 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.328 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-01-011-442770120 INTERCHANGEABLE
Plug,pipe,magnetic
Paccar Winch Inc Dba Paccar Winch Division
Cross-Reference Index
Part NumberManufacturer
77322 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
4730-01-011-4427INTERCHANGEABLE
PLUG,PIPE,MAGNETIC
70120

Frequently Asked Questions

What is NSN 5310-00-166-1446?

NSN 5310-00-166-1446 is a Washer,flat, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-166-1446?

NSN 5310-00-166-1446 has 1 cross-referenced part number: 77322 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 5310-00-166-1446?

There is 1 known substitute for 5310-00-166-1446: 4730-01-011-4427. Verify interchangeability with system specifications before substitution.

What are the specifications of 77322?

Key specifications for 77322: Thickness: 0.086 INCHES MINIMUM AND 0.101 INCHES MAXIMUM IN; Hardness Rating: 90.0 ROCKWELL B MINIMUM AND 102.0 ROCKWELL B MAXIMUM; Surface Treatment: CADMIUM OVERALL; Material: STEEL OVERALL. 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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