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

17 Reviews 4 Answered Questions
From $1.60 to $18.50
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
$2.65
Quantity
Zinc Electroplated121J-335-Z3C.1875.150.350GA3-175, 200, 250 GP3B, GH3 SR3SS SX-520SSS3-150, 175 200, 225AJ3-35*$2.45
Quantity
Zinc Electroplated121J-340-Z3C.1875.200.400GA3-175, 200, 250 GP3B, GH3 SR3SS SX-520SSS3-150, 175 200, 225
AJ3-40
$2.39
Quantity
Zinc Electroplated121J-425-Z3C.250.100.250GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-25*$2.22
Quantity
Zinc Electroplated121J-430-Z3C.250.100.300GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-30
$1.95
Quantity
Zinc Electroplated121J-435-Z3C.250.150.350GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-35*$2.20
Quantity
Zinc Electroplated121J-440-Z3C.250.200.400GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-40
$2.65
Quantity
Zinc Electroplated121J-445-Z3C.250.225.450GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-45*$18.50
Quantity
Zinc Electroplated121J-450-Z3C.250.250.500GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-50
$2.55
Quantity
Zinc Electroplated121J-530-Z3C.3125.125.300GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-30
$2.65
Quantity
Zinc Electroplated121J-535-Z3C.3125.125.350GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275AJ5-35*$2.80
Quantity
Zinc Electroplated121J-540-Z3C.3125.190.400GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-40
$2.25
Quantity
Zinc Electroplated121J-545-Z3C.3125.190.450GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275AJ5-45*$2.80
Quantity
Zinc Electroplated121J-550-Z3C.3125.250.500GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-50
$2.65
Quantity
Zinc Electroplated121J-560-Z3C.3125.300.600GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-60
$2.59
Quantity
Zinc Electroplated121J-570-Z3C.3125.400.700GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-70
$5.55
Quantity
Zinc Electroplated121J-635-Z3C.375.150.350GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300AJ6-35*$2.88
Quantity
Zinc Electroplated121J-640-Z3C.375.190.400GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-40
$2.54
Quantity
Zinc Electroplated121J-650-Z3C.375.250.500GA6-350, 375, 425, GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-50
$2.63
Quantity
Zinc Electroplated121J-660-Z3C.375.300.600GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-60
$2.37
Quantity
Zinc Electroplated121J-670-Z3C.375.350.700GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300
AJ6-70
$2.49
Quantity
Zinc Electroplated121J-750-Z3C.4375.250.500GA7-375, 475, 525 GH7 SR7SS SR7SS SX-519SSS7-225, 250, 275 300
AJ7-50
$1.60
Quantity
Zinc Electroplated121J-770-Z3C.4375.350.700GA7-375, 475, 525 GH7 SR7SS SR7SS SX-519SSS7-225, 250, 275 300
AJ7-70
$6.55
Quantity
Stainless121J-335-SS.1875.150.350SR3SSAJ3-35SS*$5.35
Quantity
Stainless121J-425-SS.250.100.250GA4-225, 250, 275, 300 GP4B, GH4 SB4SS SX-523SSS4-200, 225AJ4-25SS*$14.50
Quantity
Stainless121J-430-SS.250.100.300GA4-225, 250, 275, 300 GP4B, GH4 SB4SS SX-523SSS4-200, 225
AJ4-30SS
$8.50
Quantity
Stainless121J-435-SS.250.150.350GA4-225, 250, 275, 300 GP4B, GH4 SB4SS SX-523SSS4-200, 225AJ4-35SS*$5.70
Quantity
Stainless121J-440-SS.250.200.400GA4-225, 250, 275, 400 GP4B, GH4 SB4SS SX-523SSS4-200, 225
AJ4-40SS
$4.35
Quantity
Stainless121J-530-SS.3125.125.300GA5-312, 350, 375 GP5B, GH6 SR5SSS5A200 225 250 275
AJ5-30SS
$4.50
Quantity
Stainless121J-535.3125.125.350GA5-312, 350, 375 GP5B, GH5 SR5SSS5A200 225 250 275AJ5-35SS*$3.80
Quantity
Stainless121J-540.3125.190.400GA5-312, 350, 375 GP5B, GH5 SR5SSS5A200 225 250 275
AJ5-40SS
$3.85
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.
   
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In The Box

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Reviews

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Aaron V Verified Purchase

AJ7-50 CAD OVAL HEAD STUD
February 25, 2023

David D Verified Purchase

AJ3-35 CAD OVAL HEAD STUD
February 15, 2023

good Product

John L Verified Purchase

AJ6-60 ZINC PLATED DZUS STUD
February 10, 2023

these fasteners were perfect for my vintage C&J frame motocross bike side panels !

Jim C Verified Purchase

DZUS FASTENER AJ4-30
December 31, 2022

Very accurate and well made.

Daniel R Verified Purchase

DZUS FASTENER AJ4-30
December 29, 2022

This piece was a direct replacement for my H-35 Bonanza cowling.

Bruce V Verified Purchase

DZUS 121J-530-Z3CT
October 11, 2022

Perfect fit for my motorcycle fairing!

Francois G Verified Purchase

DZUS FASTENERS AJ5-40
July 15, 2022

Perfect fit.

Andrew M Verified Purchase

AJ4-45 DZUS CAD OVALHEAD STUD
March 9, 2022

Excellent part

Andrew M Verified Purchase

AJ4-40SS DZUS OVAL HEAD STUD
July 7, 2021

Diificult to find in Canada...Aircraft Spruce had them in stock for a very competetive price.

Pat K Verified Purchase

AJ6-60 ZINC PLATED DZUS STUD
June 4, 2021

Q&A

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: 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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