Daily McMaster-Carr
@mcmasterdaily.bsky.social
Random stuff from the big yellow book.
DM for submissions - include a little story if you want
No affiliation with McMaster-Carr Supply Company
DM for submissions - include a little story if you want
No affiliation with McMaster-Carr Supply Company
5-Way 90 Degree Elbow for 1-1/2" Rail ID Carbon Fiber Slip-on Framing
$250.48 Each
1935N74
Who's using carbon fiber framing systems, and for what? Weight savings is obviously a major factor, but dang 😳
$250.48 Each
1935N74
Who's using carbon fiber framing systems, and for what? Weight savings is obviously a major factor, but dang 😳
November 13, 2025 at 7:50 PM
5-Way 90 Degree Elbow for 1-1/2" Rail ID Carbon Fiber Slip-on Framing
$250.48 Each
1935N74
Who's using carbon fiber framing systems, and for what? Weight savings is obviously a major factor, but dang 😳
$250.48 Each
1935N74
Who's using carbon fiber framing systems, and for what? Weight savings is obviously a major factor, but dang 😳
Installation Tool for 1/2" to 5/8" ID Corrugated and Wrap-Around Sleeving
$7.90 Each
6827N12
These are the tools you don't learn about until after a huge job.
$7.90 Each
6827N12
These are the tools you don't learn about until after a huge job.
November 12, 2025 at 9:27 PM
Installation Tool for 1/2" to 5/8" ID Corrugated and Wrap-Around Sleeving
$7.90 Each
6827N12
These are the tools you don't learn about until after a huge job.
$7.90 Each
6827N12
These are the tools you don't learn about until after a huge job.
Hand Vise
for Irregularly Shaped Material
$57.84 Each
5042A45
I can think of a few times with a Dremel where this would have been really nice to have
for Irregularly Shaped Material
$57.84 Each
5042A45
I can think of a few times with a Dremel where this would have been really nice to have
November 11, 2025 at 6:12 PM
Hand Vise
for Irregularly Shaped Material
$57.84 Each
5042A45
I can think of a few times with a Dremel where this would have been really nice to have
for Irregularly Shaped Material
$57.84 Each
5042A45
I can think of a few times with a Dremel where this would have been really nice to have
Fork-Mount Towing Adapter
$407.70 Each
9114N11
Is there anything forklifts can't do?
$407.70 Each
9114N11
Is there anything forklifts can't do?
November 10, 2025 at 8:56 PM
Fork-Mount Towing Adapter
$407.70 Each
9114N11
Is there anything forklifts can't do?
$407.70 Each
9114N11
Is there anything forklifts can't do?
Handheld Barcode Scanner
Laser Scanner, USB-A Connection
$178.07 each
1735T11
Most USB barcode scanners are just HID devices so you can do all sorts of cursed things with them.
Laser Scanner, USB-A Connection
$178.07 each
1735T11
Most USB barcode scanners are just HID devices so you can do all sorts of cursed things with them.
November 10, 2025 at 12:51 AM
Handheld Barcode Scanner
Laser Scanner, USB-A Connection
$178.07 each
1735T11
Most USB barcode scanners are just HID devices so you can do all sorts of cursed things with them.
Laser Scanner, USB-A Connection
$178.07 each
1735T11
Most USB barcode scanners are just HID devices so you can do all sorts of cursed things with them.
Pastry Brush
4" Wide x 2-1/4" Long Bristles, White
$19.55 Each
9283T242
Mmmmm pastries. And associated brushes.
4" Wide x 2-1/4" Long Bristles, White
$19.55 Each
9283T242
Mmmmm pastries. And associated brushes.
November 9, 2025 at 5:19 AM
Pastry Brush
4" Wide x 2-1/4" Long Bristles, White
$19.55 Each
9283T242
Mmmmm pastries. And associated brushes.
4" Wide x 2-1/4" Long Bristles, White
$19.55 Each
9283T242
Mmmmm pastries. And associated brushes.
Cold-Protection Clothing Kit
$443.97 each
8364N201
When the science teacher walked out in this you knew it was gonna be a fun class.
$443.97 each
8364N201
When the science teacher walked out in this you knew it was gonna be a fun class.
November 7, 2025 at 7:19 PM
Cold-Protection Clothing Kit
$443.97 each
8364N201
When the science teacher walked out in this you knew it was gonna be a fun class.
$443.97 each
8364N201
When the science teacher walked out in this you knew it was gonna be a fun class.
Padlock-Style Tamper-Seal Tags
100 lb. Average Breaking Strength
Packs of 1000
1-4 Packs $168.00
5 or more $151.06
2041T7
Custom message tags for about $0.16 each... I'm thinking of alternate uses for these. 😁
100 lb. Average Breaking Strength
Packs of 1000
1-4 Packs $168.00
5 or more $151.06
2041T7
Custom message tags for about $0.16 each... I'm thinking of alternate uses for these. 😁
November 6, 2025 at 8:57 PM
Padlock-Style Tamper-Seal Tags
100 lb. Average Breaking Strength
Packs of 1000
1-4 Packs $168.00
5 or more $151.06
2041T7
Custom message tags for about $0.16 each... I'm thinking of alternate uses for these. 😁
100 lb. Average Breaking Strength
Packs of 1000
1-4 Packs $168.00
5 or more $151.06
2041T7
Custom message tags for about $0.16 each... I'm thinking of alternate uses for these. 😁
T-Handle Locking Quick-Release Pin with Ring
17-4 PH Stainless Steel, 1/4" Diameter, 1" Usable Length
$23.17 each
90293A112
I've never designed anything that had a quick release pin and I feel like I won't be a real engineer until I do.
17-4 PH Stainless Steel, 1/4" Diameter, 1" Usable Length
$23.17 each
90293A112
I've never designed anything that had a quick release pin and I feel like I won't be a real engineer until I do.
November 5, 2025 at 10:16 PM
T-Handle Locking Quick-Release Pin with Ring
17-4 PH Stainless Steel, 1/4" Diameter, 1" Usable Length
$23.17 each
90293A112
I've never designed anything that had a quick release pin and I feel like I won't be a real engineer until I do.
17-4 PH Stainless Steel, 1/4" Diameter, 1" Usable Length
$23.17 each
90293A112
I've never designed anything that had a quick release pin and I feel like I won't be a real engineer until I do.
Automatic Office Stapler
for Up to 60 Sheets
$441.68 Each
8401T3
The sound of stapling through 60 sheets at once must be amazing. Submitted by kedihecker on Twitter
for Up to 60 Sheets
$441.68 Each
8401T3
The sound of stapling through 60 sheets at once must be amazing. Submitted by kedihecker on Twitter
November 5, 2025 at 3:17 AM
Automatic Office Stapler
for Up to 60 Sheets
$441.68 Each
8401T3
The sound of stapling through 60 sheets at once must be amazing. Submitted by kedihecker on Twitter
for Up to 60 Sheets
$441.68 Each
8401T3
The sound of stapling through 60 sheets at once must be amazing. Submitted by kedihecker on Twitter
Electric Portable Ultraviolet Disinfecting Light
$582.19 each
3601N11
Handheld UV-C, wear eye and skin protection! 😎
$582.19 each
3601N11
Handheld UV-C, wear eye and skin protection! 😎
November 4, 2025 at 4:19 AM
Electric Portable Ultraviolet Disinfecting Light
$582.19 each
3601N11
Handheld UV-C, wear eye and skin protection! 😎
$582.19 each
3601N11
Handheld UV-C, wear eye and skin protection! 😎
High-Temperature 3D Printer Filament
Ultra-Strength, Fiberglass-Filled PEEK, 1.75mm Diameter
$453.72 Each
3489N21
Expensive and insanely hard to print, everyone should have a 500g roll of PEEK.
Ultra-Strength, Fiberglass-Filled PEEK, 1.75mm Diameter
$453.72 Each
3489N21
Expensive and insanely hard to print, everyone should have a 500g roll of PEEK.
November 3, 2025 at 5:41 AM
High-Temperature 3D Printer Filament
Ultra-Strength, Fiberglass-Filled PEEK, 1.75mm Diameter
$453.72 Each
3489N21
Expensive and insanely hard to print, everyone should have a 500g roll of PEEK.
Ultra-Strength, Fiberglass-Filled PEEK, 1.75mm Diameter
$453.72 Each
3489N21
Expensive and insanely hard to print, everyone should have a 500g roll of PEEK.
Nonsparking 6-Point Socket
1/2" Square Drive, 10mm Size
$48.16 Each
6503A51
Another oddball 10mm!
1/2" Square Drive, 10mm Size
$48.16 Each
6503A51
Another oddball 10mm!
November 2, 2025 at 12:11 AM
Nonsparking 6-Point Socket
1/2" Square Drive, 10mm Size
$48.16 Each
6503A51
Another oddball 10mm!
1/2" Square Drive, 10mm Size
$48.16 Each
6503A51
Another oddball 10mm!
Open-End 6-Point Socket
3/8" Square Drive, 10 mm Drive Size
$15.03 Each
93299A110
What's the weirdest socket you've ever seen? This is an odd one. Submitted by mattufacts on Twitter.
3/8" Square Drive, 10 mm Drive Size
$15.03 Each
93299A110
What's the weirdest socket you've ever seen? This is an odd one. Submitted by mattufacts on Twitter.
November 1, 2025 at 12:22 AM
Open-End 6-Point Socket
3/8" Square Drive, 10 mm Drive Size
$15.03 Each
93299A110
What's the weirdest socket you've ever seen? This is an odd one. Submitted by mattufacts on Twitter.
3/8" Square Drive, 10 mm Drive Size
$15.03 Each
93299A110
What's the weirdest socket you've ever seen? This is an odd one. Submitted by mattufacts on Twitter.
Folding Clean Room Step Stool
with 3 Steps, 45" High x 18" Wide x 26" Deep Overall
$3,414.29 Each
3550N11
Cleanroom people: what features does this have that justify the cost? Description says seamless welds and 316 stainless. There's gotta be more to it, right?
with 3 Steps, 45" High x 18" Wide x 26" Deep Overall
$3,414.29 Each
3550N11
Cleanroom people: what features does this have that justify the cost? Description says seamless welds and 316 stainless. There's gotta be more to it, right?
October 30, 2025 at 9:19 PM
Folding Clean Room Step Stool
with 3 Steps, 45" High x 18" Wide x 26" Deep Overall
$3,414.29 Each
3550N11
Cleanroom people: what features does this have that justify the cost? Description says seamless welds and 316 stainless. There's gotta be more to it, right?
with 3 Steps, 45" High x 18" Wide x 26" Deep Overall
$3,414.29 Each
3550N11
Cleanroom people: what features does this have that justify the cost? Description says seamless welds and 316 stainless. There's gotta be more to it, right?
Laser Welding Helmet
with Auto-Darkening Lens
$932.31 Each
9175N12
I don't think there's anything more cyberpunk than wearing this while LASER WELDING.
with Auto-Darkening Lens
$932.31 Each
9175N12
I don't think there's anything more cyberpunk than wearing this while LASER WELDING.
October 29, 2025 at 5:00 PM
Laser Welding Helmet
with Auto-Darkening Lens
$932.31 Each
9175N12
I don't think there's anything more cyberpunk than wearing this while LASER WELDING.
with Auto-Darkening Lens
$932.31 Each
9175N12
I don't think there's anything more cyberpunk than wearing this while LASER WELDING.
Cinching Strap
with Cam Buckle, Polypropylene, 1" Wide
$5.07 each
29695T985
Light duty straps have saved my butt more than once. Nice to have a few on hand.
with Cam Buckle, Polypropylene, 1" Wide
$5.07 each
29695T985
Light duty straps have saved my butt more than once. Nice to have a few on hand.
October 28, 2025 at 9:00 PM
Cinching Strap
with Cam Buckle, Polypropylene, 1" Wide
$5.07 each
29695T985
Light duty straps have saved my butt more than once. Nice to have a few on hand.
with Cam Buckle, Polypropylene, 1" Wide
$5.07 each
29695T985
Light duty straps have saved my butt more than once. Nice to have a few on hand.
Blade Sharpener
for Coarse Grit Knives and Scissors
$8.99 each
3663A41
Fun fact these are also decent deburring tools for sheet metal. Gets both sides in one shot.
for Coarse Grit Knives and Scissors
$8.99 each
3663A41
Fun fact these are also decent deburring tools for sheet metal. Gets both sides in one shot.
October 27, 2025 at 7:32 PM
Blade Sharpener
for Coarse Grit Knives and Scissors
$8.99 each
3663A41
Fun fact these are also decent deburring tools for sheet metal. Gets both sides in one shot.
for Coarse Grit Knives and Scissors
$8.99 each
3663A41
Fun fact these are also decent deburring tools for sheet metal. Gets both sides in one shot.
Light Bulb
ED17, High-Pressure Sodium, 70W
$26.25 Each
8293K57
I don't want to hear people complaining about how LED street lamps don't look as good as sodium lamps when they won't even install them in their own houses. It's got a standard E26 base, just add a ballast!
ED17, High-Pressure Sodium, 70W
$26.25 Each
8293K57
I don't want to hear people complaining about how LED street lamps don't look as good as sodium lamps when they won't even install them in their own houses. It's got a standard E26 base, just add a ballast!
October 26, 2025 at 11:52 PM
Light Bulb
ED17, High-Pressure Sodium, 70W
$26.25 Each
8293K57
I don't want to hear people complaining about how LED street lamps don't look as good as sodium lamps when they won't even install them in their own houses. It's got a standard E26 base, just add a ballast!
ED17, High-Pressure Sodium, 70W
$26.25 Each
8293K57
I don't want to hear people complaining about how LED street lamps don't look as good as sodium lamps when they won't even install them in their own houses. It's got a standard E26 base, just add a ballast!
Caliper Depth Base Attachment
for 0" to 12" Measuring Range, 2.9" Long
$38.20 each
8136A32
If you don't have the budget for a dedicated depth gauge.
for 0" to 12" Measuring Range, 2.9" Long
$38.20 each
8136A32
If you don't have the budget for a dedicated depth gauge.
October 25, 2025 at 11:40 PM
Caliper Depth Base Attachment
for 0" to 12" Measuring Range, 2.9" Long
$38.20 each
8136A32
If you don't have the budget for a dedicated depth gauge.
for 0" to 12" Measuring Range, 2.9" Long
$38.20 each
8136A32
If you don't have the budget for a dedicated depth gauge.
Mitutoyo Electronic Depth Gauge
Model Number 571-215-10, 0" to 24" Measuring Range
$1,017.00 Each
20545A12
I've always liked how depth gauges look like swords.
Model Number 571-215-10, 0" to 24" Measuring Range
$1,017.00 Each
20545A12
I've always liked how depth gauges look like swords.
October 24, 2025 at 10:53 PM
Mitutoyo Electronic Depth Gauge
Model Number 571-215-10, 0" to 24" Measuring Range
$1,017.00 Each
20545A12
I've always liked how depth gauges look like swords.
Model Number 571-215-10, 0" to 24" Measuring Range
$1,017.00 Each
20545A12
I've always liked how depth gauges look like swords.
High-Voltage Switch Operating Stick Bag
106" Long x 4-3/4" Wide
$46.87 Each
9546N118
A bag for your hot sticks! All the cool kids have one.
106" Long x 4-3/4" Wide
$46.87 Each
9546N118
A bag for your hot sticks! All the cool kids have one.
October 23, 2025 at 6:47 PM
High-Voltage Switch Operating Stick Bag
106" Long x 4-3/4" Wide
$46.87 Each
9546N118
A bag for your hot sticks! All the cool kids have one.
106" Long x 4-3/4" Wide
$46.87 Each
9546N118
A bag for your hot sticks! All the cool kids have one.
High-Voltage Switch Operating Stick
Adjustable-Length., 6'-44'5" Long
$808.11 Each
7541K111
These are known as hot sticks, which is a phrase I usually reserve for 7-Eleven taquitos. 100,000V AC seems pretty hot to me!
Adjustable-Length., 6'-44'5" Long
$808.11 Each
7541K111
These are known as hot sticks, which is a phrase I usually reserve for 7-Eleven taquitos. 100,000V AC seems pretty hot to me!
October 22, 2025 at 4:45 PM
High-Voltage Switch Operating Stick
Adjustable-Length., 6'-44'5" Long
$808.11 Each
7541K111
These are known as hot sticks, which is a phrase I usually reserve for 7-Eleven taquitos. 100,000V AC seems pretty hot to me!
Adjustable-Length., 6'-44'5" Long
$808.11 Each
7541K111
These are known as hot sticks, which is a phrase I usually reserve for 7-Eleven taquitos. 100,000V AC seems pretty hot to me!
Electronic Chamfer Gauge
45 Degree Angle Measured
$293.27 Each
8013N11
We love very specific measuring tools.
45 Degree Angle Measured
$293.27 Each
8013N11
We love very specific measuring tools.
October 21, 2025 at 5:25 PM
Electronic Chamfer Gauge
45 Degree Angle Measured
$293.27 Each
8013N11
We love very specific measuring tools.
45 Degree Angle Measured
$293.27 Each
8013N11
We love very specific measuring tools.
Extended-Length Carbide-Tipped Drill Bit
with Coolant Holes, 1/8" Size, 10" Long
$192.10 each
2744N125
It's not 3.3mm (Twitter post reference) but it is a gun drill, and gun drills are cool.
with Coolant Holes, 1/8" Size, 10" Long
$192.10 each
2744N125
It's not 3.3mm (Twitter post reference) but it is a gun drill, and gun drills are cool.
October 20, 2025 at 9:56 PM
Extended-Length Carbide-Tipped Drill Bit
with Coolant Holes, 1/8" Size, 10" Long
$192.10 each
2744N125
It's not 3.3mm (Twitter post reference) but it is a gun drill, and gun drills are cool.
with Coolant Holes, 1/8" Size, 10" Long
$192.10 each
2744N125
It's not 3.3mm (Twitter post reference) but it is a gun drill, and gun drills are cool.