CherryMAX®

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In the world of aerospace engineering, every component counts. Enter the CherryMAX® rivet, a small yet mighty fastener that plays a crucial role in ensuring the structural integrity of aircraft and other aerospace applications. CherryMAX® rivets are blind rivets renowned for their exceptional strength, reliability, and ease of installation. Consisting of a cylindrical body with a flange and a mandrel, these rivets are installed from just one side of the workpiece, making them ideal for applications where access to the rear side is limited or impossible. They are commonly used in aerospace, automotive, and construction industries, among others, where their high shear and tensile strength are highly valued.

 

Traditional CherryMax® Removal Challenges:

The traditional method for removing CherryMAX® rivets involves a series of manual steps, including center punching, drilling, and driving out the rivet stem with a pin punch. While this approach may seem straightforward, it can be time-consuming, labor-intensive, and prone to damaging the surrounding material.

One common approach is to carefully drill out the rivet’s lockring. Technicians typically start by center-punching the rivet stem to provide a guide, then use progressively larger drill bits to drill down to the lockring. Once the lockring is compromised, a punch can be used to push the remaining stem out. The rivet head is then drilled out using a bit the same size as the rivet shank, and the head is broken off with a pin punch. Finally, the remaining rivet body is driven out with a pin punch.

Various methods are employed based on the structure’s material and thickness. Light structures require more delicate drilling to avoid distortion, while heavy structures may use a specially ground punch to push the stem down before removing the lockring. Techniques like using a tape sander to sand off the center of the rivet, and then drilling and popping off the head, are also common.

Dangers and Problems During CherryMAX® Removal:

  • Drill Bit Walking: The rivet stem often does not break off flush, causing the drill bit to wander and potentially damage the surrounding structure.
  • Structural Damage: Using a hammer and chisel can distort light structures, and improper grinding can cause destructive damage.
  • Skill Level: The effectiveness of these methods largely depends on the technician’s skill and care. Inexperienced operators can easily cause damage.
  • FOD Concerns: Foreign object debris (FOD) from drilling and grinding must be managed to prevent contamination and further damage.

By adhering to these procedures and using appropriate techniques, technicians can efficiently remove CherryMAX® rivets while minimizing potential risks and damage.

 

E-Drill- Revolutionizing CherryMAX® Removal:

Enter E-Drill, the game-changing technology revolutionizing rivet removal in the aerospace industry. Powered by electro-discharge machining (EDM), E-Drill offers a precise, efficient, and non-destructive solution for removing CherryMAX® rivets and other fasteners. Unlike traditional drilling methods, E-Drill uses electrical discharges to erode the rivet material, leaving behind a clean, burr-free hole.

E-Drill boasts several advantages over traditional rivet removal methods. Firstly, its non-contact machining process eliminates the risk of damage to the surrounding material, ensuring a pristine finish and preserving the structural integrity of the workpiece. Additionally, E-Drill’s precise control allows for greater accuracy and consistency, reducing the likelihood of human error and rework. Moreover, its efficient operation significantly reduces downtime and labor costs, making it a preferred choice for aerospace maintenance and repair operations.

CherryMAX® rivets are indispensable components in aerospace engineering, offering unparalleled strength and reliability. However, their removal using traditional methods can be challenging and time-consuming. With E-Drill, aerospace professionals can enjoy a faster, safer, and more efficient solution for rivet removal, unlocking new possibilities in aircraft maintenance and repair.

 

CherryMAX® Part Numbers:

Part Number Sleeve Material Stem Material Collar Material Head Style
CR3212 5056 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES PROTRUDING
CR3223 5057 ALUMINUM ALLOY 15-7 PH CRES A-286 CRES PROTRUDING
CR3523 MONEL 15-7 PH CRES A-286 CRES PROTRUDING
CR3523P MONEL 15-7 PH CRES A-286 CRES PROTRUDING
CR3523EE MONEL 15-7 PH CRES A-286 CRES PROTRUDING
CR3211 5056 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES 100° FLUSH HEAD
CR3222 5057 ALUMINUM ALLOY 15-7 PH CRES A-286 CRES 100° FLUSH HEAD
CR3522 MONEL 15-7 PH CRES A-286 CRES 100° FLUSH HEAD
CR3522P MONEL 15-7 PH CRES A-286 CRES 100° FLUSH HEAD
CR3522EE MONEL 15-7 PH CRES A-286 CRES 100° FLUSH HEAD
CR3213 5057 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES 100° FLUSH SHEAR HEAD
CR3223 5057 ALUMINUM ALLOY 15-7 PH CRES A-286 CRES 100° FLUSH SHEAR HEAD
CR3524 MONEL 15-7 PH CRES A-286 CRES 100° FLUSH SHEAR HEAD
CR3524P MONEL 15-7 PH CRES A-286 CRES 100° FLUSH SHEAR HEAD
CR3524EE MONEL 15-7 PH CRES A-286 CRES 100° FLUSH SHEAR HEAD
CR3243 5057 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES PROTRUDING/ Oversize
CR3253 5057 ALUMINUM ALLOY 15-7 PH CRES A-286 CRES PROTRUDING/ Oversize
CR3553 MONEL 15-7 PH CRES A-286 CRES PROTRUDING/ Oversize
CR3553P MONEL 15-7 PH CRES A-286 CRES PROTRUDING/ Oversize
CR3553EE MONEL 15-7 PH CRES A-286 CRES PROTRUDING/ Oversize
CR3853 INCONEL 600 INCONEL  X-750 A-286 CRES PROTRUDING/ Oversize
CR3242 5057 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES 100° FLUSH HEAD/ Oversize
CR3252 5057 ALUMINUM ALLOY 15-7 PH CRES A-286 CRES 100° FLUSH HEAD/ Oversize
CR3552 MONEL 15-7 PH CRES A-286 CRES 100° FLUSH HEAD/ Oversize
CR3552P MONEL 15-7 PH CRES A-286 CRES 100° FLUSH HEAD/ Oversize
CR3552EE MONEL 15-7 PH CRES A-286 CRES 100° FLUSH HEAD/ Oversize
CR3852 INCONEL 600 INCONEL  X-750 A-286 CRES 100° FLUSH HEAD/ Oversize
CR3244 5057 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES UNISINK HEAD/ OVERSIZE
CR3254 5057 ALUMINUM ALLOY 15-7 PH CRES A-286 CRES UNISINK HEAD/ OVERSIZE
CR3555 MONEL 15-7 PH CRES A-286 CRES UNISINK HEAD/ OVERSIZE
CR3555P MONEL 15-7 PH CRES A-286 CRES UNISINK HEAD/ OVERSIZE
CR3245 5057 ALUMINUM ALLOY 8740 ALLOY STEEL A-286 CRES 120° FLUSH HEAD / Oversize
CR3556 MONEL 15-7 PH CRES A-286 CRES 120° FLUSH HEAD / Oversize
CR3556P MONEL 15-7 PH CRES A-286 CRES 120° FLUSH HEAD / Oversize

 

Other Cherry Fasteners

Part Number Type Head Style Stem Material Sleve Material Shank Diameter Alternate Part Numbers
AAC-32 Cherry Pop Rivet 120° Countersunk Aluminum  Aluminum Body 3/32 Diameter AK32ABS, AACS-03-02
AACQ-44 Cherry Q Pop Blind Rivet Countersunk 5056 Aluminum 7178 Aluminum 1/8 Diameter
AAPQ42 Cherry Q Rivet Universal Head Aluminum Aluminum 1/8 Diameter AD42H, BSPQ-42
BSPQ-44 Pop Rivet Protruding Head Steel  Aluminum Body 1/8 Diameter AD44H
CCC-44 Pop Rivet 120° Countersunk 1/8 Diameter BA-CCCS-04-04-B, SSK44SSBS
CCR264CS3-02 Cherry Pull Thru Rivet 100° Countersunk Stainless Steel 3/32 Diameter MS20605AD3W2, MS20605R3W2
CCR264CS3-04 Cherry Pull Thru Rivet 100° Countersunk Stainless Steel 3/32 Diameter MS20605AD3W4, MS20605R3W4
CCR264CS3-06 Cherry Pull Thru Rivet 100° Countersunk Stainless Steel 3/32 Diameter MS20605AD3W6, MS20605R3W6
CCR264SS3-01 Cherry Pull Thru Rivet 100° Countersunk Plated Steel 3/32 Diameter
CCR264SS3-02 Cherry Pull Thru Rivet 100° Countersunk Plated Steel 3/32 Diameter
CCR264SS3-04 Cherry Pull Thru Rivet 100° Countersunk Plated Steel 3/32 Diameter
CCR264SS3-05 Cherry Pull Thru Rivet 100° Countersunk Plated Steel 3/32 Diameter
CCR264SS3-06 Cherry Pull Thru Rivet 100° Countersunk Plated Steel 3/32 Diameter
CCR264SS3-12 Cherry Pull Thru Rivet 100° Countersunk Plated Steel 3/32 Diameter
CCR274SS3-04 Cherry Pull Thru Rivet Universal Head Plated Steel 3/32 Diameter
CCR274SS4-03 Cherry Pull Thru Rivet Universal Head Plated Steel 1/8 Diameter
CR2163-4-04 CherryLock Blind Rivet Universal Head 7075 Aluminum  2017 Aluminum 1/8 Diameter
CR3212-4-02 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 1/8 Diameter NAS9302B4-2
CR3212-4-03 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 1/8 Diameter NAS9302B4-3
CR3212-4-04 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 1/8 Diameter NAS9302B4-4
CR3212-4-05 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 1/8 Diameter NAS9302B4-5
CR3212-4-06 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 1/8 Diameter NAS9302B4-6
CR3212-4-07 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 1/8 Diameter NAS9302B4-7
CR3212-5-02 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 5/32 Diameter NAS9302B5-2
CR3212-5-05 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 5/32 Diameter NAS9302B5-5
CR3212-6-03 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 3/16 Diameter NAS9302B6-3
CR3212-6-04 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 3/16 Diameter NAS9302B6-4
CR3212-6-05 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 3/16 Diameter NAS9302B6-5
CR3212-6-09 CHERRYMAX 100° Countersunk Steel  5056 Aluminum 3/16 Diameter NAS9302B6-9
CR3213-4-02 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-02
CR3213-4-03 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-03
CR3213-4-04 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-04
CR3213-4-05 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-05
CR3213-4-06 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-06
CR3213-4-07 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-07
CR3213-4-08 CHERRYMAX Universal Head Steel  5056 Aluminum 1/8 Diameter NAS9301B4-08
CR3213-5-01 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-01
CR3213-5-02 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-02
CR3213-5-03 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-03, NAS9301B-5-03
CR3213-5-04 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-04
CR3213-5-05 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-05
CR3213-5-06 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-06
CR3213-5-07 CHERRYMAX Universal Head Steel  5056 Aluminum 5/32 Diameter NAS9301B5-07
CR3213-6-02 CHERRYMAX Universal Head Steel  5056 Aluminum 3/16 Diameter NAS9301B6-02
CR3213-6-03 CHERRYMAX Universal Head Steel  5056 Aluminum 3/16 Diameter NAS9301B6-03
CR3213-6-04 CHERRYMAX Universal Head Steel  5056 Aluminum 3/16 Diameter NAS9301B6-04
CR3213-6-05 CHERRYMAX Universal Head Steel  5056 Aluminum 3/16 Diameter NAS9301B6-05
CR3213-6-06 CHERRYMAX Universal Head Steel  5056 Aluminum 3/16 Diameter NAS9301B6-06
CR3213-6-08 CHERRYMAX Universal Head Steel  5056 Aluminum 3/16 Diameter NAS9301B6-08
CR3214-4-3 CHERRYMAX 100° Countersunk Steel  Aluminum 1/8 Diameter NAS9303B4-3
CR3223-4-3 CHERRYMAX Universal Head Stainless Steel  Aluminum 1/8 Diameter NAS9301E4-03
CR3223-4-5 CHERRYMAX Universal Head Stainless Steel  Aluminum 1/8 Diameter NAS9301E4-05
CR3223-4-6 CHERRYMAX Universal Head Stainless Steel  Aluminum 1/8 Diameter NAS9301E4-06
CR3223-6-2 CHERRYMAX Universal Head Stainless Steel  Aluminum 3/16 Diameter NAS9301E6-02
CR3223-6-3 CHERRYMAX Universal Head Stainless Steel  Aluminum 3/16 Diameter NAS9301E6-03
CR3224-4-3 CHERRYMAX 100° Countersunk 1/8 Diameter
CR3242-4-01 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 1/8 Diameter
CR3242-4-02 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 1/8 Diameter NAS9305B4-2
CR3242-4-03 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 1/8 Diameter NAS9305B4-3
CR3242-4-04 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 1/8 Diameter NAS9305B4-4
CR3242-4-05 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 1/8 Diameter NAS9305B4-5
CR3242-4-07 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 1/8 Diameter NAS9305B4-7
CR3242-5-02 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 5/32 Diameter NAS9305B5-2
CR3242-5-03 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 5/32 Diameter NAS9305B5-3
CR3242-5-04 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 5/32 Diameter NAS9305B5-4
CR3242-5-05 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 5/32 Diameter NAS9305B5-5
CR3242-5-06 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 5/32 Diameter NAS9305B5-06
CR3242-5-07 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 5/32 Diameter NAS9305B5-7
CR3242-6-08 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 3/16 Diameter NAS9305B6-8
CR3242-6-5 CHERRYMAX 100° Countersunk 8740 Steel  5056 Aluminum 3/16 Diameter NAS9305B5-5
CR3243-4-01 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-01
CR3243-4-02 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-02
CR3243-4-03 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-03
CR3243-4-04 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-04
CR3243-4-05 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-05
CR3243-4-06 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-06
CR3243-4-07 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-07
CR3243-4-08 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 1/8 Diameter NAS9304B4-08
CR3243-5-01 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-01
CR3243-5-02 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-02
CR3243-5-03 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-03
CR3243-5-04 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-04
CR3243-5-05 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-05
CR3243-5-07 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-07
CR3243-5-08 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-08
CR3243-5-09 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 5/32 Diameter NAS9304B5-09
CR3243-6-02 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-02
CR3243-6-03 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-03
CR3243-6-04 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-04
CR3243-6-05 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-05
CR3243-6-07 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-07
CR3243-6-08 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-08
CR3243-6-6 CHERRYMAX Universal Head 8740 Steel  5056 Aluminum 3/16 Diameter NAS9304B6-06
CR3253-6-5 CHERRYMAX Universal Head 632 Steel  5056 Aluminum 3/16 Diameter NAS9304E-6-05
CR3522-4-02 CHERRYMAX 100° Countersunk Stainless Steel  Monel 1/8 Diameter
CR3522-6-05 CHERRYMAX 100° Countersunk Stainless Steel  Monel 3/16 Diameter
CR3522-6-06 CHERRYMAX 100° Countersunk Stainless Steel  Monel 3/16 Diameter
CR3552-4-06 CHERRYMAX 100° Countersunk Stainless Steel  Monel 1/8 Diameter
CR3553-4-06 CHERRYMAX Universal Head Stainless Steel  Monel 1/8 Diameter
CR3553-4-07 CHERRYMAX Universal Head Stainless Steel  Monel 1/8 Diameter
CR3553-4-08 CHERRYMAX Universal Head Stainless Steel  Monel 1/8 Diameter
CR3553-5-04 CHERRYMAX Universal Head Stainless Steel  Monel 5/32 Diameter
CR3553-5-05 CHERRYMAX Universal Head Stainless Steel  Monel 5/32 Diameter
CR9126-3-02 CHERRYMAX 100° Countersunk Steel 5056 Aluminum 3/32 Diameter MS20605B3-02
CR9162-4-01 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20601AD4W1
CR9162-4-02 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20601AD4W2
CR9162-4-03 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20601AD4-3, MS20601AD4W3
CR9162-4-04 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20601AD4W4
CR9162-5-02 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 5/32 Diameter MS20601AD5W2
CR9162-5-04 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 5/32 Diameter MS20601AD5W4
CR9162-5-06 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 5/32 Diameter MS20601AD5W6
CR9162-6-02 CHERRYMAX 100° Countersunk 2017 Aluminum 2017 Aluminum 3/16 Diameter MS20601AD6W2
CR9163-4-01 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20600AD4W1
CR9163-4-02 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20600AD4W2
CR9163-4-03 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20600AD4W3
CR9163-4-04 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20600AD4W4
CR9163-4-06 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 1/8 Diameter MS20600AD4W5
CR9163-5-01 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 5/32 Diameter MS20600AD5W1
CR9163-6-03 CHERRYMAX Universal Head 2017 Aluminum 2017 Aluminum 3/16 Diameter MS20600AD6W3
MS20426D6-12 Rivet- Solid 100° Countersunk Aluminum Alloy 3/16 x 3/4
MSP-32 Pop Rivet Universal Dome Head Steel  Monel Body 3/32 Diameter MD319BS
MSP-43 Pop Rivet Universal Dome Head Steel  Monel Body 1/8 Diameter 429BS
MSP-45 Pop Rivet Universal Dome Head Steel  Monel Body 1/8 Diameter 440BS

 

Cherry®, CHERRY BLIND RIVETS™, CHERRY RIVET™, CHERRYBUCK®, CHERRYLOCK®, CherryMAX®, CherryMAX A®, CR®, E-Z BUCK®, Intermax®, Maxibolt™, MBC®, PAR90®, QUICKQUOTE®, SPR®, and SST® are trademarks of Cherry Aerospace. Perfect Point EDM, Corp is not affiliated with Cherry Aerospace.