PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18019Washer,flat

Chicago Steel Tape Co Inc Berger Instruments Co Inc · NSN 5310-01-276-9777 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-276-9777 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-276-9777. Primary manufacturer part number: 18019.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.412 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: PLASTIC TETRAFLUOROETHYLENE OVERALL
  • Center Hole Shape Style: ROUND
  • Thickness: 0.031 INCHES NOMINAL IN
  • Hole Diameter: 0.265 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Tetrafluoroethylene Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-276-9777, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Chicago Steel Tape Co Inc Berger Instruments Co Inc. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-276-9777
Primary Part Number18019
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerChicago Steel Tape Co Inc Berger Instruments Co Inc
StatusACTIVE
Overall Diameter0.412 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
MaterialPLASTIC TETRAFLUOROETHYLENE OVERALL
Center Hole Shape StyleROUND
Thickness0.031 INCHES NOMINAL IN
Hole Diameter0.265 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-051-0347580R233H01 INTERCHANGEABLE
Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6620-00-181-596618019 INTERCHANGEABLE
Ring
Ranco Inc Ranco Controls Div
5133-00-189-9264 INTERCHANGEABLE
Drill,twist
5365-00-205-956518019 INTERCHANGEABLE
Spacer,ring
Paccar Winch Inc Dba Paccar Winch Division
4320-00-232-567818019 INTERCHANGEABLE
Vane Set,rotary
Coffin Turbo Pump Inc
3455-00-239-5609INVOLUTE 30-4 INTERCHANGEABLE
Cutter,milling,involute Gear
F & D Tool Co Inc
5330-00-251-8535 INTERCHANGEABLE
Gasket
5905-00-324-63688107468 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Us Army Aviation and Missile Command
5930-00-874-30961801-9 INTERCHANGEABLE
Spring,pressure Swi
Janco Corporation Dba Janco Corp Div Mason Controls
5325-00-884-011418019 INTERCHANGEABLE
Ring,retaining
Sigma Tek, Inc.
Cross-Reference Index
Part NumberManufacturer
18019 PRIMARY Chicago Steel Tape Co Inc Berger Instruments Co Inc (USA)
Related Parts
5950-00-051-0347INTERCHANGEABLE
REACTOR
580R233H01
6620-00-181-5966INTERCHANGEABLE
RING
18019
5133-00-189-9264INTERCHANGEABLE
DRILL,TWIST
5365-00-205-9565INTERCHANGEABLE
SPACER,RING
18019
4320-00-232-5678INTERCHANGEABLE
VANE SET,ROTARY
18019
3455-00-239-5609INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
INVOLUTE 30-4
5330-00-251-8535INTERCHANGEABLE
GASKET
5905-00-324-6368INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
8107468
5930-00-874-3096INTERCHANGEABLE
SPRING,PRESSURE SWI
1801-9
5325-00-884-0114INTERCHANGEABLE
RING,RETAINING
18019
5962-01-123-7993INTERCHANGEABLE
MICROCIRCUIT,MEMORY
932820-400
6105-01-315-6022INTERCHANGEABLE
ARMATURE,MOTOR

Frequently Asked Questions

What is NSN 5310-01-276-9777?

NSN 5310-01-276-9777 is a Washer,flat, manufactured by Chicago Steel Tape Co Inc Berger Instruments Co Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-276-9777?

NSN 5310-01-276-9777 has 1 cross-referenced part number: 18019 (Chicago Steel Tape Co Inc Berger Instruments Co Inc).

What NSN replaces 5310-01-276-9777?

There are 12 known substitutes for 5310-01-276-9777: 5950-00-051-0347, 6620-00-181-5966, 5133-00-189-9264 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18019?

Key specifications for 18019: Overall Diameter: 0.412 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN; Peripheral Shape Style: ROUND; Cross-Sectional Shape Style: RECTANGULAR; Material: PLASTIC TETRAFLUOROETHYLENE OVERALL. 7 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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