Description
Reviews
| Brand | - |
| Category | Root / Hardware & Tools |
| Origin | - |
| Material | Carbon Steel |
| Grade | 8.8 |
| Finish | Black Oxide (Blackened) |
| Head Style | Hex Socket with Integrated Flange |
| Drive Type | Allen/Hex Key |
| Thread Standard | Metric (ISO) |
| Available Sizes | M4, M5, M8, M10 |
| Feature | Integrated Washer for Load Distribution |
| Application | Automotive, Machinery, Structural Assembly |
| Corrosion Resistance | Moderate (Suitable for indoor/dry environments) |
Anonymous
Mar 29, 2026
Rating: 5/5
Exactly as described
Needed specific flange bolts for a motorcycle modification. These matched the specs perfectly and arrived quickly. Will buy again.
Anonymous
Mar 21, 2026
Rating: 4/5
Strong but watch the torque
Very strong 8.8 grade bolts. Just be careful not to over-torque them as the black finish can chip if you go too hard. Overall very satisfied.
Anonymous
Mar 20, 2026
Rating: 4/5
Good quality, fast shipping
Solid carbon steel construction. I used the M8 size for a shelving unit. One bolt had a slightly rough thread, but the rest were perfect.
Anonymous
Mar 12, 2026
Rating: 5/5
Great value for bulk purchase
Bought a mix of M4 and M5 for my electronics enclosure projects. They hold tight and the flange distributes pressure evenly without cracking the plastic.
Anonymous
Mar 10, 2026
Rating: 5/5
Perfect for automotive repairs
These bolts fit perfectly on my engine block. The integrated flange saves time since I don't need separate washers. The black finish looks great too.
Anonymous
Mar 02, 2026
Rating: 5/5
Excellent grip and finish
The hex socket is deep and well-machined, so my keys don't strip easily. The black oxide coating provides a nice professional look.
Q: Does the integrated washer rotate independently?
A: No, the flange is integrated directly into the bolt head and does not rotate independently. This design helps prevent loosening due to vibration compared to a separate washer.
Q: Are these bolts suitable for outdoor use in rainy conditions?
A: While the black oxide finish offers some protection, these are carbon steel and may rust if exposed to constant moisture. We recommend applying additional grease or using stainless steel alternatives for harsh outdoor environments.
Q: Can I use these on aluminum parts without causing galvanic corrosion?
A: Direct contact between carbon steel and aluminum can lead to galvanic corrosion. We suggest using a dielectric grease or an isolation washer between the bolt and the aluminum part to prevent this issue.
Q: What size Allen key do I need for the M10 bolt?
A: For the M10 Hex Socket Flange Bolt, you will typically need an 8mm Allen key. Please check the specific product packaging for confirmation as tolerances can vary slightly by manufacturer.
Q: Do you sell matching nuts for these bolts?
A: These are designed primarily for tapping into threaded holes. However, if you need nuts, standard metric hex nuts corresponding to the bolt size (M4, M5, M8, M10) will fit the threads correctly.
Disiple Commercial Fried Chicken Warmer with Heat Lamp for Egg Tarts, Chestnuts, and Sweet Potatoes
$1,045.00
Baby Rattle with Chewable Goat Skin - Traditional Wooden Hand-Shaken Toy for Newborns
$8.42
Low-Temperature 3D Stereoscopic Drawing Pen for Kids, 3D Printing Pen Consumables PCL Filament Coil
$10.20
GHL Small Wet Mixing Granulator Chicken Essence Feed Pelletizer Lab High-Speed Wet Mixing Granulator
$36,000.00
![[Damai Holds Micro-Needle Hair Transplant Patent] Top Thinning Hair Transplant | Micro-Needle Density Enhancement 1000 Grafts](https://www.gosteppe.com/cache/small/product/269952/legacy-main-dcbe0d97f2626dd23efe098f.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] Top Thinning Hair Transplant | Micro-Needle Density Enhancement 1000 Grafts
$14,000.00
![[Folded Book] Zhao Mengfu Running Script: Zhi Zhai Ji - Complete Original-Size Calligraphy Masterpiece in Accordion Binding](https://www.gosteppe.com/cache/small/product/269951/legacy-main-dcc7bccd2c0e53c519ed3ca3.webp)
[Folded Book] Zhao Mengfu Running Script: Zhi Zhai Ji - Complete Original-Size Calligraphy Masterpiece in Accordion Binding
$15.10
Aizaofang Four-Connected Flower Elf Oval Flower DIY Handmade Soap Silicone Mold New Bar Soap Silicone Mold
$16.10
Ruitai Dental Korean Implant System Package
$3,980.00
Dental Implant Package - Full Mouth Zirconia Crowns by Dilic for Missing Teeth Replacement
$10.00
Adjustable Over-Toilet Storage Rack for Bathroom Floor Standing Space Saving Organizer
$147.20
Flake Soy Wax & White Bees Wax Pellets – DIY Cup Candle Making Kit with Strawberry Scented Mold and Raw Materials
$5.34
Manufacturer Supply FF High-Speed Dispersing Kettle - Stainless Steel Reactor for Paint, Ink, and Chemical Mixing Equipment
$9,104.80
Mia Bouncy Sketch Blending Cotton Sponge Ball Paper Stump Water-Absorbent Sponge New Art Tool Washable Magic Cotton for Students
$4.80
Yucheng 1606 Fast-Drying Acrylic Adhesive - Odorless, Non-Whitening Glue for Acrylic Bonding
$21.20
Magnetic Storage Shelf Cute Building Block Magnetic Organizer Box Refrigerator Decorative Sticker Cling Film Holder Wall-Mounted Fridge Magnet
$3.80
Commercial Countertop Fried Chicken Warmer Cabinet Hamburger Egg Tart Heating Constant Temperature Box Multi-Function Insulated Display Case for Fried Foods
$620.00
Rectangular Silicone Mold for DIY Handmade Soap
$16.80
Leqin 495 Super Glue - 20g Transparent Fast-Drying Adhesive for Hard Plastics, Metal, Wood, PVC, and Rubber
$25.84
New Chinese Style Zen Calligraphy Felt Mat, Non-Slip Desk Pad for Traditional Writing Tools
$16.50
LB-8001 Inline Water Sampler - Mixed Water Sample Retention Instrument
$10,312.16
Mont Marte Children's Paint Brush Set - Toddler Tempera and Watercolor Brushes, Beginner Fan Brushes, Graffiti Tools
$7.00
Alumina Hollow Sphere Bricks, Castables, High-Temperature Mullite Bricks, High-Alumina Lightweight Insulating Bricks
$124.53
Natural Crystal Lemon Yellow Azeztulite Round Beads for DIY Jewelry Making, Bracelets, and Necklaces
$0.74
Fast Stair-Climbing Folding Hand Truck, Portable Shopping Cart for Groceries and Luggage
$304.08
Yonghe Hair Transplant: Shaved Method for Large-Area Top Density Enhancement - Unlimited Grafts by Director Team
$19,800.00
Long Rectangular Self-Watering White Planter for Narrow Window Sills and Balconies
$12.90
![[In Stock] Maihe BOXFUN Rilakkuma Watch Blind Box - Gulu Gulu Moment Series Wristwatch, Gift for Girls](https://www.gosteppe.com/cache/small/product/269930/legacy-main-81bb51a69f43ed5a98182a06.png)
[In Stock] Maihe BOXFUN Rilakkuma Watch Blind Box - Gulu Gulu Moment Series Wristwatch, Gift for Girls
$29.00
6-Cavity Tulip Flower Handmade Soap Mold - DIY Silicone Mold for Soap and Baking
$11.87
TILTA Video Transmission Heat Sink Cooling Fan Compatible with DJI Transmission
$298.75
CNC External Thread Tool Holder SER2020K16/2525M16, 22 Positive/Negative External Turning Lathe Bar
$15.92
![[Yugan Member Bulk Pack] Official Authentic Flagship Store Multiple Options Exclusive Medical Hyaluronic Acid Condoms](https://www.gosteppe.com/cache/medium/product/278183/legacy-main-c19ff6b8c4e5a8efea786d28.webp)
![[Black Gold 001 3-in-1] Durex Condoms Official Flagship Store; Ultra-Thin Authentic Safety Sets Bulk Pack](https://www.gosteppe.com/cache/medium/product/275389/legacy-main-7400ceae4a3df34eb3abed82.png)
