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85-11-160-20 Oval Slotted Stud

Part# 85-11-160-20
MFR Model# 85-11-160-20
TypeOEM NumberMaterialPN
Oval Head #85 Slotted85-11-160-20Stainless 85-11-160-20


Size Series: Large Size
Head Recess
Type: Stud

Tech Data Sheet and Sizing Info (PDF)

Product Literature (PDF)

Trade Drawing (PDF)

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


These Southco quarter-turn fasteners make the PERFECT cowl attach method. I used the wing-head fasteners (-12 model) -- easy to install & remove without a tool. And since no tool, GONE are the frustrating, inevitable scratches on the cowl paint near the fasteners caused by tool slips!

March 30, 2021

parts were just what we needed at a good price and quick shiiping

January 6, 2020

Good stuff

Charlie K
July 6, 2017

How do I find the part number for the receptacles for these fasteners?

January 14, 2021

Sadly, many of the sizes do not have the size stamped on the head. Makes it a real PITA to figure out what size you have in situations where you use multiple stud sizes. Southco is slipping in quality I fear.

January 28, 2024

Trying to get correct matching parts for Southco is nearly impossible with available info. When I called, Sales did not offer to help resolve/assist.

C.w. F
November 30, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can you get these Southco 85-11-200-20 studs with a Phillips head?

We do not carry this with a phillips head.

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