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Mellewell

Mellewell 1/4-20 x 1/2" Flanged Hex Head Bolts Flange Hexagon Screws, Stainless Steel A2, DIN 6921, 25 PCS

  • Based on 509 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Jul 12
Order within 9 hours and 53 minutes
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Item Package Quantity: 25


Size: 1/4-20 x 1/2"


Features

  • Screw Type: 1/4-20 x 1/2" Flanged Bolts - DIN 6921.
  • Specification: Pitch 20 TPI. Screw Length: 1/2" (Excluding Head). Diameter of head: 9.5mm. Diameter of hex washer: 14mm. Height of head: 7mm.
  • Material: High quality stainless steel A2-70, corrosion resistant.
  • Package Included: 25 PCS.
  • Wide Applications: Flanged Bolts can be used widely in the home and office appliance, communication equipments, ship assembly, the mechanical industry and small repairs around shops, garages or home furniture fasteners.

Description

Product Specification Screw Type: Flanged Bolts Size: 1/4-20 Screw Length: 1/2" (Excluding Head) Material: Stainless steel A2-70 Color: Plain Finish Pitch Size: 20 TPI Diameter of Head: 9.5mm Diameter of Hex Washer: 14mm Height of Head: 7mm Package Included 25 PCS Flanged Bolts 1/4-20 x 1/2"

Thread Size: 1/4"-20


Exterior Finish: Stainless Steel


Manufacturer Grade: Premium


Screw Head Style: Hex Flange


Color: Silver


Fastener Type: Hexagon Bolt


Thread Type: Right Hand


Thread Style: Right Hand


Item Hardness: Rockwell B70


Head Type: Hex


Thread Class: 2A


Set Screw Thread Type: Unified National Coarse (UNC)


Compatible Groove Diameter: 9.5 Millimeters


Screw Point Style: Flat Point


Drive System: Internal Hex


Material Type: Stainless Steel


Exterior Finish: Stainless Steel


Metal Type: Stainless Steel


Finish Types: Polished


Thread Size: 1/4"-20


Item Diameter: 6.35 Millimeters


Size Name: 1/4-20 x 1/2"


Number of Pieces: 25


Outside Diameter: 9.5 Millimeters


Fastener Size: 1/4"


Thread Coverage: Fully Threaded


Compatible Groove Diameter: 9.5 Millimeters


Color: Silver


Fastener Type: Hexagon Bolt


Brand: Mellewell


Set Name: 25 pieces


Manufacturer: Mellewell


Number Of Items: 25


Model: FLWLJ.1420X12-25


Part Number: FLWLJ.1420X12-25


Unit Count: 25.0 Count


Best Sellers Rank: #4,646 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #8 in Hex Bolts


ASIN: B0C5C33G9Y


Customer Reviews: 4.8 4.8 out of 5 stars (509) 4.8 out of 5 stars


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Exactly as described
Size: 1/4-20 x 1" Color: Silver Number of Items: 25
Appear to be good quality but the truth on that will tell once they have been exposed to the weather. Threads are complete and take a good amount of torque without stripping, hex heads are uniform and fit the socket well. Size is as ordered and you can use 1/4 20 for just about anything
Reviewed in the United States on April 11, 2026 by Will
    • Black bolt so I don’t have to paint them
They were exactly what I was looking for. They came in the black color so I don’t have to paint them black they’ll work good in my restoration project and I hope to do more business with them in the future
Reviewed in the United States on March 24, 2026 by Rick Gutzmer
    • a good product.
Size: 1/4-20 x 3/4" Color: Silver Number of Items: 25
They fit and did the job.
Reviewed in the United States on April 27, 2026 by satisfied buyer
    • Good Price and Look
Size: 1/4-20 x 1/2" Color: Silver Number of Items: 25
Really hard to find for a good price and these came out just what I needed. Good shine and for a really good price
Reviewed in the United States on May 30, 2026 by Amazon Customer
    • Quality Parts
Size: 1/4-20 x 1/2" Color: Silver Number of Items: 25
Great Quality. Great Value.
Reviewed in the United States on March 23, 2026 by Joseph W Hall
    • Well made, cheap finish, soft steel
Size: 1/4-20 x 1-1/4" Color: Black Number of Items: 25
These are pretty well made with clean threads and a slight taper on the end..hex head is a tad undersized and soft edges but they're ok for low torque applications. The finish is cheap paint but it may help to avoid galling (also will flake off and contaminate grease or threadlock). I didn't notice when purchasing that these are soft stainless but they'll work for what I need them for - locally all I could find was grade 8 yellow zinc and the pricing was pretty high (for my piddly application). The plastic box these come in is cheap but actually a little better than most of this type. Good value, just be aware that these are soft steel and being stainless you want to be cautious about galling and ending up with a headache. ... show more
Reviewed in the United States on January 5, 2025 by J Osborne
    • Stainless bolts.
Size: 1/4-20 x 1" Color: Silver Number of Items: 25
Worked nice and made project look pretty good.
Reviewed in the United States on December 19, 2025 by Roger B
    • Satisfactory
Size: 1/4-20 x 1" Color: Silver Number of Items: 25
As advertised
Reviewed in the United States on June 25, 2026 by RalphD66

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