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AN509 screw — 100° flat countersunk, structural, legacy designation

Screw, Machine, 100° Flat Head, Structural: thread sizes, lengths and commonly stocked part numbers. Head dimensions come from the standard itself.

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AN509 at a glance

Where to buy
AN509, screw, machine, 100° flat head, structural
AN509

Specification

ItemValue
Head100° flat countersunk, structural, legacy designation
Drivecross recess
StatusCheck the current issue before design use.

Part numbers and lengths

Sizes commonly stocked. The standard governs and may list other lengths.

8-3220 part numbers

Part no.Length, inGrip, in
AN509-8R49/323/32
AN509-8R511/323/32
AN509-8R613/323/32
AN509-8R715/323/32
AN509-8R817/323/32
AN509-8R919/325/32
AN509-8R1021/327/32
AN509-8R1123/329/32
AN509-8R1225/3211/32
AN509-8R1327/3213/32
AN509-8R1429/3215/32
AN509-8R1531/3217/32
AN509-8R161-1/3219/32
AN509-8R171-3/3221/32
AN509-8R181-5/3223/32
AN509-8R191-7/3225/32
AN509-8R201-9/3227/32
AN509-8R211-11/3229/32
AN509-8R221-13/3231/32
AN509-8R231-15/321-1/32

10-3232 part numbers

Part no.Length, inGrip, in
AN509-10R49/327/64
AN509-10R511/327/64
AN509-10R613/327/64
AN509-10R715/327/64
AN509-10R817/327/64
AN509-10R919/327/64
AN509-10R1021/323/16
AN509-10R1123/321/4
AN509-10R1225/325/16
AN509-10R1327/323/8
AN509-10R1429/327/16
AN509-10R1531/321/2
AN509-10R161-1/329/16
AN509-10R171-3/325/8
AN509-10R181-5/3211/16
AN509-10R191-7/323/4
AN509-10R201-9/3213/16
AN509-10R211-11/327/8
AN509-10R221-13/3215/16
AN509-10R231-15/321
AN509-10R241-17/321-1/16
AN509-10R251-19/321-1/8
AN509-10R261-21/321-3/16
AN509-10R271-23/321-1/4
AN509-10R281-25/321-5/16
AN509-10R291-27/321-3/8
AN509-10R301-29/321-7/16
AN509-10R322-1/321-9/16
AN509-10R342-5/321-11/16
AN509-10R362-9/321-13/16
AN509-10R372-11/321-7/8
AN509-10R382-13/321-15/16

Part number

Notes from the standard

  • Old AN designation; MS24694 is the current standard. Number: thread code (8 or 10), R, then a sequence number; length and grip as listed.
  • Part number written as the listing writes it; the standard governs the exact format.
  • Approved data governs. Use the screw the SRM, drawing or IPC calls for.

Where to buy

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Calculators

CalculatorPart Number Equivalent Cross-Reference & DecoderType any AN509 number and land on its row.CalculatorDistributor finderFind where to buy aircraft part numbers

Guides

ChartFastener cross-referenceFrequent fastener crosses with their supersession status

Data sheets

Data sheetScrewsThe family side by side.Data sheetAN507Screw, Machine, 100° Flat Head, Non-StructuralData sheetAN515Screw, Machine, Pan Head, Coarse Thread

Sources

  • AN509 — Screw, Machine, 100° Flat Head, Structural — 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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