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

8 Reviews 3 Answered Questions
From $1.60 to $9.65
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*$2.15
Quantity
Zinc Electroplated121J-330-Z3C.1875.100.300GA3-175, 200, 250 GP3B, GH3 SR3SS, SX-520SSS3-150, 175 200, 225
AJ3-30
$2.25
Quantity
Zinc Electroplated121J-335-Z3C.1875.150.350GA3-175, 200, 250 GP3B, GH3 SR3SS SX-520SSS3-150, 175 200, 225AJ3-35*$2.30
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*$1.85
Quantity
Zinc Electroplated121J-440-Z3C.250.200.400GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-40
$2.24
Quantity
Zinc Electroplated121J-445-Z3C.250.225.450GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225AJ4-45*$9.65
Quantity
Zinc Electroplated121J-450-Z3C.250.250.500GA4-225, 250, 275, 300 GP4B, GH4 SR4SS SX-523SSS4-200, 225
AJ4-50
$2.20
Quantity
Zinc Electroplated121J-530-Z3C.3125.125.300GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-30
$2.50
Quantity
Zinc Electroplated121J-535-Z3C.3125.125.350GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275AJ5-35*$2.35
Quantity
Zinc Electroplated121J-540-Z3C.3125.190.400GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-40
$1.87
Quantity
Zinc Electroplated121J-545-Z3C.3125.190.450GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275AJ5-45*$2.25
Quantity
Zinc Electroplated121J-550-Z3C.3125.250.500GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-50
$2.38
Quantity
Zinc Electroplated121J-560-Z3C.3125.300.600GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-60
$2.20
Quantity
Zinc Electroplated121J-570-Z3C.3125.400.700GA5-312, 350, 375 GP5B, GH5 SR5SS SX-510SSS5A200, 225, 250, 275
AJ5-70
$4.35
Quantity
Zinc Electroplated121J-635-Z3C.375.150.350GA6-350, 375, 425 GP6B, GH6 SR6SS SX-518SSS6-225, 250, 275 300AJ6-35*$2.33
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 SX519SSS7-225, 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*$7.90
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
$3.35
Quantity
Stainless121J-530-SS.3125.125.300GA5-312, 350, 375 GP5B, GH6 SR5SSS5A200 225 250 275
AJ5-30SS
$3.35
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
$3.60
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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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

perfect

Mrg
August 17, 2020

Perfect,

Lee W
November 10, 2019

Does the job it is designed for

Andrew H
September 7, 2017

I have received aj4-40 i have asked aj5-40 i still need them please send me them if required Ask for my crédit card no via e mail and l will send you thank you

Gilles D
November 5, 2020

Unfortunately the part supplied was 1mm too short, and so would not lock in. Very disapointing!

Doug J
January 30, 2020

Getting the stud only without the rest of the parts is not helpful. No direction to the crush ring and spring are supplied by your catalog. a seperate listing of these parts rather than a group as they are now and how to get to them is needed.

Michael H
March 2, 2017

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.

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