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AN363 nut — regular height hexagon, all metal, 450 °F

Nut, Self-Locking, Hexagon, Regular Height, All Metal, 450 °F: dimensions by thread size and part numbers as listed. Tolerances and notes are on the standard.

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AN363 at a glance

Where to buy
AN363 engineering drawing with dimensions
Engineering drawing · dimensions in inches

Specification

ItemValue
TypeSelf-locking nut
MaterialCarbon steel
StatusCheck the current issue of the standard before design use.

Dimensions by size

Dimension, in.1120-40.1380-32.1640-32.1900-32.2500-28.3125-24.3750-24.5000-20.5625-18.6250-18.4375-20 (AN363-720)
A max — A, max (height).167.188.250.250.328.360.469.610.705.766.469
A min — A, min (height).133.160.219.208.240.271.318.575.623.732.453
B — B, across flats.243.305.336.367.430.492.553.741.865.928.615
C — C, min (across corners).268.339.374.410.482.552.622.837.9781.051.705
F — F, min.044.072.091.085.116.123.153.221.243.274.178

Dimensions in inches, as tabulated for the part. Blank cells (—): not stated in the documents we hold; take them from the standard.

Part numbers

Part no.SizeVersionListed as MS21045
AN363-440.1120-40Carbon steelMS21045-04
AN363-632.1380-32Carbon steelMS21045-06
AN363-832.1640-32Carbon steelMS21045-08
AN363-1032.1900-32Carbon steelMS21045-3
AN363-428.2500-28Carbon steelMS21045-4
AN363-524.3125-24Carbon steelMS21045-5
AN363-624.3750-24Carbon steelMS21045-6
AN363-820.5000-20Carbon steelMS21045-8
AN363-918.5625-18Carbon steelMS21045-9
AN363-1018.6250-18Carbon steelMS21045-10
AN363-720.4375-20 (AN363-720)Carbon steel

Part numbers as listed for the part; the standard governs and may list others.

Part number

How a AN363 part number is built, segment by segment

What each code means

PartMeaning
ExampleAN363-428 — Carbon steel, 1/4-28, all-metal regular height hexagon nut, 450 °F

Notes from the standard

  • Listed with MS21045 (AN363) on the same page. The 7/16-20 size has two numbers: the MS21045 equivalent of AN363-720 is not listed; AN363-720 has the dimensions shown.
  • The AN363 number is the thread written as numerals (440 is 4-40, 1032 is 10-32).
  • Part number format as commonly written; check the standard for the exact format.
  • Approved data governs. Use the nut the SRM, drawing or IPC calls for.

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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 AN363 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…GuideASNA fastenersHow to read ASNA blind bolt and rivet numbersChartFastener 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 sheetNutsThe family side by side.Data sheetWashersAircraft washers side by sideData 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

Books

Fasteners & HardwareBookFasteners & HardwareFastener types and codes, sizes, tools and substitutes in one reference. Coming soon.

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Sources

  • AN363 — Nut, Self-Locking, Hexagon, Regular Height, All Metal, 450 °F — 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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