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Home / Hardware / Fasteners / Dzus /Dzus Oval Head Studs Long Undercut
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Dzus Oval Head Studs Long Undercut

26 Reviews 4 Answered Questions
From $2.36 to $21.50
Reference Chart

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Material
Type		 Model A B L Grommets
&Snap
Rings		 Springs Cat
#		 Price Buy
Zinc Electroplated121J-325-Z3C.1875.075.250GA3-175, 200, 250 GP3B, GH3 SR3SS, SX-520SSS3-150, 175 200, 225AJ3-25*$4.35
Quantity
Zinc Electroplated121J-330-Z3C.1875.100.300GA3-175, 200, 250 GP3B, GH3 SR3SS, SX-520SSS3-150, 175 200, 225
AJ3-30
$3.90
Quantity
Zinc Electroplated121J-335-Z3C.1875.150.350GA3-175, 200, 250 GP3B, GH3 SR3SS SX-520SSS3-150, 175 200, 225AJ3-35*$3.65
Quantity
Zinc Electroplated121J-340-Z3C.1875.200.400GA3-175, 200, 250 GP3B, GH3 SR3SS SX-520SSS3-150, 175 200, 225
AJ3-40
$4.35
Quantity
Zinc Electroplated121J-425-Z3C.250.100.250GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-25*$3.35
Quantity
Zinc Electroplated121J-430-Z3C.250.100.300GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-30
$2.87
Quantity
Zinc Electroplated121J-435-Z3C.250.150.350GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-35*$3.35
Quantity
Zinc Electroplated121J-440-Z3C.250.200.400GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-40
$4.35
Quantity
Zinc Electroplated121J-445-Z3C.250.225.450GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-45*$8.75
Quantity
Zinc Electroplated121J-450-Z3C.250.250.500GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-50
$3.75
Quantity
Zinc Electroplated121J-530-Z3C.3125.125.300GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-30
$4.35
Quantity
Zinc Electroplated121J-535-Z3C.3125.125.350GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275AJ5-35*$4.35
Quantity
Zinc Electroplated121J-540-Z3C.3125.190.400GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-40
$3.35
Quantity
Zinc Electroplated121J-545-Z3C.3125.190.450GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275AJ5-45*$4.35
Quantity
Zinc Electroplated121J-550-Z3C.3125.250.500GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-50
$4.35
Quantity
Zinc Electroplated121J-560-Z3C.3125.300.600GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-60
$3.85
Quantity
Zinc Electroplated121J-570-Z3C.3125.400.700GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-70
$8.50
Quantity
Zinc Electroplated121J-635-Z3C.375.150.350GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300AJ6-35*$4.35
Quantity
Zinc Electroplated121J-640-Z3C.375.190.400GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-40
$3.75
Quantity
Zinc Electroplated121J-650-Z3C.375.250.500GA6-350, 375, 425, GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-50
$3.90
Quantity
Zinc Electroplated121J-660-Z3C.375.300.600GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-60
$3.50
Quantity
Zinc Electroplated121J-670-Z3C.375.350.700GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-70
$3.70
Quantity
Zinc Electroplated121J-750-Z3C.4375.250.500GA7-375, 475, 525 GH7 SR7SS SR7SS SX-519SSS7-225, 250, 275 300
AJ7-50
$2.36
Quantity
Zinc Electroplated121J-770-Z3C.4375.350.700GA7-375, 475, 525 GH7 SR7SS SR7SS SX-519SSS7-225, 250, 275 300
AJ7-70
$9.65
Quantity
Stainless121J-335-SS.1875.150.350SR3SSAJ3-35SS*$9.60
Quantity
Stainless121J-425-SS.250.100.250GA4-225, 250, 275, 300 GP4B, GH4 SB4SS SX-523SSS4-200, 225AJ4-25SS*$21.50
Quantity
Stainless121J-430-SS.250.100.300GA4-225, 250, 275, 300 GP4B, GH4 SB4SS SX-523SSS4-200, 225
AJ4-30SS
$12.50
Quantity
Stainless121J-435-SS.250.150.350GA4-225, 250, 275, 300 GP4B, GH4 SB4SS SX-523SSS4-200, 225AJ4-35SS*$8.50
Quantity
Stainless121J-440-SS.250.200.400GA4-225, 250, 275, 400 GP4B, GH4 SB4SS SX-523SSS4-200, 225
AJ4-40SS
$6.50
Quantity
Stainless121J-530-SS.3125.125.300GA5-312, 350, 375 GP5B, GH6 SR5SSS5A200 225 250 275
AJ5-30SS
$6.65
Quantity
Stainless121J-535.3125.125.350GA5-312, 350, 375 GP5B, GH5 SR5SSS5A200 225 250 275AJ5-35SS*$5.60
Quantity
Stainless121J-540.3125.190.400GA5-312, 350, 375 GP5B, GH5 SR5SSS5A200 225 250 275
AJ5-40SS
$5.70
Quantity
Subtotal $0.00
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Overview

Download the Application Chart (PDF)

CAD Plated fasteners are no longer available due to enviromental reasons.

( * ) :No longer available after our current stock is depleted. Please order next longer size.

In The Box

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Reviews

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V.G.

Bob H Verified Purchase

DZUS STUD AJ5-45
July 27, 2023

Dzus fastener worked perfectly as expected.

Calvin H Verified Purchase

DZUS FASTENERS AJ5-40
July 23, 2023

Dzus fastener worked perfectly as expected.

Calvin H Verified Purchase

DZUS FASTENERS AJ5-35
July 23, 2023

Dzus fastener worked perfectly as expected.

Calvin H Verified Purchase

DZUS 121J-530-Z3CT
July 23, 2023

Need replacements for side panel on my C&J XR500 Honda, which I found on the reviews for these fasteners. Very Satisfied, Perfect replacement.

Greg B Verified Purchase

DZUS FASTENER AJ4-30
June 20, 2023

Worked perfectly. I have been looking for this model and found at Aircraft Spruce.

Phil B Verified Purchase

AJ6-60 ZINC PLATED DZUS STUD
June 10, 2023

Perfect

Mark B Verified Purchase

AJ5-40SS DZUS OVAL HEAD STUD
April 29, 2023

Glad they are still available.

Philip B Verified Purchase

DZUS STUD AJ4-50
April 5, 2023

Glad they were available.

Philip B Verified Purchase

DZUS FASTENER AJ3-25
April 5, 2023

Aaron V Verified Purchase

AJ7-50 CAD OVAL HEAD STUD
February 25, 2023

Q&A

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Please note, Aircraft Spruce Canada'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 Canada 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: If I order a Dzus fastener, does it come with the appropriate spring?

No, the springs are sold separate.

Q: Are the dimension in inches are in cm?

Dims are in inches.

Q: I own a 1947 Bonanza 35, Dzus part # for the studs are AJ5-30. What is the corresponding Dzus spring part #?

It depends on the total thickness from under the head to the spring. For that stud it would be S5A-200 through 275. There is a chart on the web.

Q: Do these come with the delrin washers/spacers?

No, you can purchase the GP3B separately, its a plastic half grommet.

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