PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

90700-4Washer,flat

Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok · NSN 5310-01-050-1523 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-050-1523 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-050-1523. Primary manufacturer part number: 90700-4.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: NICKEL ALLOY OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.226 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
  • Thickness: 0.0355 INCHES MINIMUM AND 0.0385 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-050-1523, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 8 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-050-1523
Primary Part Number90700-4
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCircor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
StatusACTIVE
Material Document and ClassificationQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialNICKEL ALLOY OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.226 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Overall Diameter0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
Thickness0.0355 INCHES MINIMUM AND 0.0385 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5330-01-206-7355907004 INTERCHANGEABLE
Gasket
Rcf Technologies Inc
6515-01-527-126990-7004 INTERCHANGEABLE
Diamond-Jaw Holder
Snowden Pencer, Inc.
1560-01-692-552390-7004-3 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-692-553790-7004-1 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-692-576290-7004-2 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-700-515590-7004-6 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Legacy Wichita
1560-01-700-634990-7004-7 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Legacy Wichita
1560-01-700-717690-7004-8 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Legacy Wichita
1560-01-700-819690-7004-5 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Legacy Wichita
Cross-Reference Index
Part NumberManufacturer
90700-4 PRIMARY Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
Related Parts
5330-01-206-7355INTERCHANGEABLE
GASKET
907004
6515-01-527-1269INTERCHANGEABLE
DIAMOND-JAW HOLDER
90-7004
1560-01-692-5523INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-3
1560-01-692-5537INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-1
1560-01-692-5762INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-2
1560-01-700-5155INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-6
1560-01-700-6349INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-7
1560-01-700-7176INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-8
1560-01-700-8196INTERCHANGEABLE
STIFFENER,AIRCRAFT
90-7004-5

Frequently Asked Questions

What is NSN 5310-01-050-1523?

NSN 5310-01-050-1523 is a Washer,flat, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-050-1523?

NSN 5310-01-050-1523 has 1 cross-referenced part number: 90700-4 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).

What NSN replaces 5310-01-050-1523?

There are 9 known substitutes for 5310-01-050-1523: 5330-01-206-7355, 6515-01-527-1269, 1560-01-692-5523 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 90700-4?

Key specifications for 90700-4: Material Document and Classification: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: NICKEL ALLOY OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Hole Diameter: 0.226 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN. 8 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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