PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20618Washer,flat

Mandzak Instrumentation Specialists Inc · NSN 5310-00-765-3205 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-765-3205 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-765-3205. Primary manufacturer part number: 20618.
Features
  • Washer,flat — FSC 5310
  • Material: ALUMINUM ALLOY 2024 OVERALL
  • Surface Treatment: ANODIZE OVERALL
  • Surface Treatment Document and Classification: MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.125 INCHES NOMINAL IN
  • Hole Diameter: 0.062 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-765-3205, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mandzak Instrumentation Specialists Inc. 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-765-3205
Primary Part Number20618
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMandzak Instrumentation Specialists Inc
StatusCANCELLED
MaterialALUMINUM ALLOY 2024 OVERALL
Surface TreatmentANODIZE OVERALL
Surface Treatment Document and ClassificationMIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.125 INCHES NOMINAL IN
Hole Diameter0.062 INCHES NOMINAL IN
Thickness0.013 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5330-00-178-4739155499D180 INTERCHANGEABLE
Seal,plain Encased
Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co
5133-00-227-9650 INTERCHANGEABLE
Drill,twist
6130-00-238-8447 INTERCHANGEABLE
Rectifier,metallic
4720-00-459-691020618 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5360-00-911-993720618 INTERCHANGEABLE
Spring,helical,compression
Level 10 Industries, Inc. Div Level 10 Industries
4720-00-942-845820618 INTERCHANGEABLE
Tubing,flexible
Avox Systems Inc Dba Avox Systems Inc
4720-01-129-502720618 INTERCHANGEABLE
Hose Assembly,nonmetallic
Alliance Laundry Systems Llc
5310-01-138-536020-618 INTERCHANGEABLE
Washer,lock
Naval Inventory Control Point Mechanicsburg
5310-01-434-764020618 INTERCHANGEABLE
Nut,plain,hexagon
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
Cross-Reference Index
Part NumberManufacturer
20618 Mandzak Instrumentation Specialists Inc (USA)
Related Parts
5330-00-178-4739INTERCHANGEABLE
SEAL,PLAIN ENCASED
155499D180
5133-00-227-9650INTERCHANGEABLE
DRILL,TWIST
6130-00-238-8447INTERCHANGEABLE
RECTIFIER,METALLIC
4720-00-459-6910INTERCHANGEABLE
HOSE,PREFORMED
20618
5360-00-911-9937INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20618
4720-00-942-8458INTERCHANGEABLE
TUBING,FLEXIBLE
20618
4720-01-129-5027INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
20618
5310-01-138-5360INTERCHANGEABLE
WASHER,LOCK
20-618
5310-01-434-7640INTERCHANGEABLE
NUT,PLAIN,HEXAGON
20618

Frequently Asked Questions

What is NSN 5310-00-765-3205?

NSN 5310-00-765-3205 is a Washer,flat, manufactured by Mandzak Instrumentation Specialists Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-765-3205?

NSN 5310-00-765-3205 has 1 cross-referenced part number: 20618 (Mandzak Instrumentation Specialists Inc).

What NSN replaces 5310-00-765-3205?

There are 9 known substitutes for 5310-00-765-3205: 5330-00-178-4739, 5133-00-227-9650, 6130-00-238-8447 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20618?

Key specifications for 20618: Material: ALUMINUM ALLOY 2024 OVERALL; Surface Treatment: ANODIZE OVERALL; Surface Treatment Document and Classification: MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Peripheral Shape Style: ROUND. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-765-3205 still in active supply?

NSN 5310-00-765-3205 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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