do these come with a certificate of Inspection?

They come with a photocopied card stating standard expected size deviations, not what I believe to be actual inspection values. The price point of these pins, one cannot expect an individual inspection report on each pin. The pins have measured accurate as I can measure them and have been at stated sizes. For my home machine shop use they exceed expectations. I am working within .0005 tolerances and they are doing what I need them to do. Nicely packaged and really corrosion proofed for transit. Each pin wrapped in oil paper to protect. Fit and finish is quite awesome for the price. Very happy with my set. Looking to get next size group of pins (.251-.500) from Accusize. I hope this helps.

If i want to buy only 1 set , should i buy plus or minus pin gage set ? which set experience machinists prefer ? why ? thank you so much

According to CCROSS: "A pin gauge set will typically consist of either plus or minus pin gauges, and based on procedure or tolerances may require both versions to determine a go no go outcome. A minus pin gauge set includes pins with a specified tolerance below the target size, allowing the pin to fit within the target dimension. Likewise, a plus pin gauge set includes pins with a specified tolerance above the target dimension, creating a no-go situation for a bore at the target dimension." So, choose the minus or the plus based on your work.

What is the size of the box these pins are in?

Box size 4" x 5", each pin has a cap to hold onto each pin.

Are all new sets coming in the new improved case?

As of writing, we are still in the process of upgrading the cases. So some of them might come with old cases.

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0.251''-0.500'', 250 Pc/Set Steel Plug Pin Gage Set, Minus, Class Zz, M2(-)

0.251''-0.500'', 250 Pc/Set Steel Plug Pin Gage Set, Minus, Class Zz, M2(-)

Product ID: 84283780

Details

Brand
Accusize Tools
Item Diameter
0.25 inches
Material
Alloy Steel
Pin type
Plug
Size
0.251"-0.500"

📏250 precision sizes 0.251''-0.500''

🔥Heat treated 60-62 HRC hardness

⚙️Class ZZ tolerance ±0.0002''

EC$1352

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Description

📐 Master precision, own the craft — don’t let accuracy slip away!

PRECISION AT SCALE - 250-piece set covers a broad range from 0.251'' to 0.500'' for every measurement challenge.
UNMATCHED ACCURACY - Class ZZ tolerance ensures ultra-tight measurements with a max deviation of just -0.0002''.
DURABILITY ENGINEERED - Heat-treated alloy steel with 60-62 HRC hardness guarantees long-lasting, wear-resistant performance.
CONSISTENT RELIABILITY - Standardized 2'' length and centerless lapped finish deliver smooth, repeatable measurements every time.
EFFORTLESS IDENTIFICATION - Electro-etched size markings on each gauge speed up workflow and eliminate guesswork.

The Accusize Industrial Tools 250-piece Steel Plug Pin Gage Set offers a comprehensive range of sizes from 0.251'' to 0.500'', engineered to Class ZZ standards with ultra-tight tolerances of -0.0002''. Each gauge is heat-treated to a robust 60-62 HRC hardness and features electro-etched size markings for quick identification. Designed with a consistent 2'' length and centerless lapped finish, this set ensures durable, precise, and reliable measurements for professional-grade industrial applications.

Specifications

ASIN	B00YQ3QVXM
Best Sellers Rank	#23,994 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Pin Gauges
Brand	Accusize Industrial Tools
Color	red
Customer Reviews	4.6 4.6 out of 5 stars (407)
Fastener Type	Plug
Finish Types	Polished
Item Diameter	0.25 inches
Item Dimensions	3.15 x 16.93 x 12.2 inches
Item Weight	9 kg
Manufacturer	Accusize Co., Ltd.
Material Type	Alloy Steel
Model	M2(-)
Number Of Items	250
Number of Pieces	250
Outside Diameter	0.25 inches
Part Number	M2(-)
Pin Type	Plug
Screw Head Style	Plug
Set Name	250 Pc/Set
Size Name	0.251"-0.500", w/o Aluminum Case
Thread Size	0.251''-0.500''
UPC	641799808714
Unit Count	250 Count

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EC$1352

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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