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MC657985-1.38 (mc657985-1.38--mas.jpg)
Part Number MC657985-1.38

MC657985-1.38, STUD, 1/4-20X1/4-28X1-3/8

Part # MC657985-1.38

STUD, 1/4-20X1/4-28X1-3/8


$10.59 Retail Price: $11.75
In Stock
Must Order in Quantities of 4

Get everything you need

STUD EXTRACTOR SET

$386.79 / was $461.56

Expected ship date is 05-28-2027.
STUD DRIVER SET

TOOL135

STUD DRIVER SET

$202.66 / was $241.81

Expected ship date is 07-02-2027.

Product Details

Specifications

Approval
FAA PMA
Condition
New
Manufacturer
McFarlane Aviation
Dimensions
L: 4 x W: 3 x H: 1 in
Weight
0.0125 lbs
Unit of Measure
Each
McFarlane Part Number
MC657985-1.38

Product Description

FAA-PMA approved for Continental and Lycoming engines

Save money and get an enhanced product with McFarlane Stainless Steel Exhaust Nuts and Studs! A heat-treated, high-strength stainless alloy improvement, these studs are nitrocarburized Black Max™ coated for additional corrosion protection and resistance to galling. The studs are tap-end studs that come in various oversized options for use on Continental and Lycoming engines.

  • Lasts much longer! Save $$$ and labor!
  • Less stress on the exhaust flanges and gaskets as the engine heats up and cools down
  • Studs are nitrocarburized Black Max™ coating to resist galling and corrosion
  • Black Max™ prevents galvanic corrosion between stainless and aluminum cylinder

Stainless steel vs. alloy steel: is it worth the money?
Written by Dave McFarlane, Founder

WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources

Eligible Aircraft
Make Model Start S/N End S/N Quantity Per Aircraft Location Eligibility Chart
Continental IO-470-VOIO-470-VOS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental O-470-G-CIO-470-G-CIS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental O-470-UO-470-US/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental GTSIO-520-CGTSIO-520-CS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental GTSIO-520-DGTSIO-520-DS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental GTSIO-520-HGTSIO-520-HS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental GTSIO-520-LGTSIO-520-LS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental GTSIO-520-MGTSIO-520-MS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental GTSIO-520-NGTSIO-520-NS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-AIO-520-AS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-BIO-520-BS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-BAIO-520-BAS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-BBIO-520-BBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-CIO-520-CS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-CBIO-520-CBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-DIO-520-DS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-EIO-520-ES/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-FIO-520-FS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-JIO-520-JS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-KIO-520-KS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-LIO-520-LS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-MIO-520-MS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-520-MBIO-520-MBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-AFTSIO-520-AFS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-BBTSIO-520-BBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-BETSIO-520-BES/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-BETSIO-520-BES/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-CETSIO-520-CES/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-DBTSIO-520-DBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-EBTSIO-520-EBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-JBTSIO-520-JBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-KBTSIO-520-KBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-LTSIO-520-LS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-LBTSIO-520-LBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-MTSIO-520-MS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-NTSIO-520-NS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-NBTSIO-520-NBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-TTSIO-520-TS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-UBTSIO-520-UBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-VBTSIO-520-VBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-520-WBTSIO-520-WBS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-AIO-550-AS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-CIO-550-CS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-DIO-550-DS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-EIO-550-ES/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-FIO-550-FS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-GIO-550-GS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-LIO-550-LS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-NIO-550-NS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-PIO-550-PS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IO-550-RIO-550-RS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IOF-550-NIOF-550-NS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IOF-550-PIOF-550-PS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental IOF-550-RIOF-550-RS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-ATSIO-550-AS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-BTSIO-550-BS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-CTSIO-550-CS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-ETSIO-550-ES/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-GTSIO-550-GS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-JTSIO-550-JS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-KTSIO-550-KS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIO-550-NTSIO-550-NS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIOF-550-DTSIOF-550-DS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIOF-550-JTSIOF-550-JS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIOF-550-KTSIOF-550-KS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIOF-550-PTSIOF-550-PS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIOL-550-ATSIOL-550-AS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Continental TSIOL-550-CTSIOL-550-CS/N 0 – ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQuantity Per Aircraft 24Location ENGINEEligibility Chart 1618
Cross Reference

Reference only: Please verify the product is eligible for your aircraft before adding to your cart.

  • 657985-1.38
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