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The Aviation PointTechnical data sheet · theaviationpoint.com/parts/washers/a1638/

A1638 washer — vulcanized fiber washer

Washer, Vulcanized Fiber, Bone White: nominal sizes and commonly stocked part numbers.

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A1638 at a glance

Where to buy
Photo to come
A1638 engineering drawing with dimensions
Engineering drawing · dimensions in inches

Specification

ItemValue
TypeFlat washer, non-metallic
MaterialVulcanized fiber
StatusCheck the current issue before design use.

Part numbers

Part no.SizeThickness
A1638-5.190.031

Sizes commonly stocked. The standard governs and may list others.

Part number

What each code means

PartMeaning
ExampleA1638-5 — To fit .190

Notes from the standard

  • To fit diameter .190; thickness .031. Maker part number.
  • Part number written as the listing writes it; the standard governs the exact format.
  • Approved data governs. Use the washer the SRM, drawing or IPC calls for.

Where to buy

AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way

Distributors coming soon.

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Calculators

CalculatorTorque by Part Number: Bolt and NutTorque for an AN or NAS bolt with its nut, from AC 43.13-1B Table 7-1CalculatorTorque Wrench Extension CalculatorTorque wrench setting with a crowfoot or adapterCalculatorAviation Unit ConverterConvert the units a hangar mixesCalculatorPart number cross-referenceType any A1638 number and see its other names.

Guides

ChartAN Bolt & Nut Torque ChartRecommended torque for AN and MS nuts and bolts in inch-pounds, fine and coarse thread, plus…ChartFastener cross-referenceFrequent fastener crosses with their supersession status

How to do it

Standard practiceTorquingHow to torque aircraft bolts

Tools

Tool guideTorque wrenchHow to use an aircraft torque wrenchBuying guideTorque Wrenches: Click, Dial or Beam, and What RangeWhich torque wrench for AN hardware

Data sheets

Data sheetNutsAircraft nuts side by sideData sheetWashersThe family side by side.Data sheetAN bolts, AN3 to AN8AN3 to AN8 aircraft bolts side by sideData sheetTekton TRQ — micrometer click torque wrenches, 1/4 to 1/2 in driveTekton TRQ Tekton micrometer torque wrenches

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Distributors coming soon.

Sources

  • A1638 — Washer, Vulcanized Fiber, Bone White — nominal sizes and part numbers.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.
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