Best Aluminum Lock Bolts in 2026

Daisy
Last Updated: Jul 17, 2026

At a Glance: Our Top Picks for Aluminum Lock Bolts

M8-1.25 x 16/20/25/30/35mm Flanged Hex Head Bolts, VIGURE 90PCS M8 Flange Hexagon Screws Serrated Flange Nuts Washers, Stainless Steel 18-8 (304), DIN 6921
#TOP1
M8-1.25 X 16/20/25/30/35Mm Flanged Hex Head Bolts, Vigure
9.7
PM SCORE
VIGRUE 252Pcs M6-1.0 M8-1.25 Flange Hex Head Bolts Nuts Washers Kit(12mm to 30mm) Class 10.9 Alloy Steel Black Zinc Plated Metric Flanged Hex Screws Assortment Full Coarse Thread
#TOP2
Vigrue 252Pcs M6-1.0 M8-1.25 Flange Hex Head Bolts
9.7
PM SCORE
(10 Sets) 5/16-18x1-1/4" Stainless Steel Hex Head Screws Bolts and Nuts kit, Nuts 5/16, Fender Flat Washer 5/16& Spring Lock Washers 5/16, 18-8 (304) S/S, Fully Threaded by Bolt Fullerkreg
#TOP3
(10 Sets) 5/16-18X1-1/4" Stainless Steel Hex Head Screws
9.6
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Aluminum Lock Bolts of 2026

M8-1.25 X 16/20/25/30/35Mm Flanged Hex Head Bolts, Vigure 90Pcs M8 Flange Hexagon Screws Serrated Flange Nuts Washers, Stainless Steel 18-8 (304), Din 6921

VIGRUE
90 M8 FLANGE BOLTS
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.88

Features

Head Style: Flanged Hex; Pitch: M8-1.25mm; Finish: Stainless Steel; Socket wrench: 13mm; Full UNC Thread; Metric flanged hex bolts - DIN6921

Sizes: M8 x 16/20/25/30mm Flanged Hex Head Bolts pair with serrated flange lock nuts and washers.

Flange Design: there have a flange on the bottom of the bolts head and the flange nuts, which distributes the load like a spring washer; And serred flange make it screw firmly

Easy to Get the Exact Sizes: The bolts and nuts come in a portable firm clear box with corresponding sizes label. It is convenient for you to put away and store, which allow you to get the one you need quickly, improving your project efficiently.

High Quality: these bolts set are made of good A2-70 stainless steel 18-8 (304) material, featuring with higher hardness & great tensile strength, offering corrosion resistance even in severe surroundings.

Vigrue 252Pcs M6-1.0 M8-1.25 Flange Hex Head Bolts Nuts Washers Kit(12Mm To 30Mm) Class 10.9 Alloy Steel Black Zinc Plated Metric Flanged Hex Screws Assortment Full Coarse Thread

VIGRUE
252
2.00 X 3.00 X 4.00 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VIGRUE-KING OF SCREW 9.88

Features

✔Head Style: Flanged Hex(Non-Serrated); Pitch: M6-1.0 M8-1.25mm; Finish: Black Zinc Plated; Wrench Size: M6(8mm) M8(10mm); Full UNC Thread

✔Screw Type: M6-1.0 M8-1.25 DIN 1662 metric hex flange bolts screws lock nuts washers assortment kit.

✔Sizes: M6 x 12/16/20/25/30mm, M8 x 16/20/25/30mm Flanged Hex Head Bolts pair with serrated flange lock nuts and washers.

✔Class 10.9 Steel are considered hardened, providing a high strength, high tensile fastening solution, coated with zinc black provides these m6 and m8 flange bolts better rust resistance, won't strip easily.

✔ 3X Rust Protection German Coating Tech- VIGRUE m6 m8 black flange bolts incorporate German coating anti-rust technology, offer a threefold increase in rust protection compared to other brand regular screws.

(10 Sets) 5/16-18X1-1/4" Stainless Steel Hex Head Screws Bolts And Nuts Kit, Nuts 5/16, Fender Flat Washer 5/16& Spring Lock Washers 5/16, 18-8 (304) S/S, Fully Threaded By Bolt Fullerkreg

FULLERKREG
1
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Fullerkreg 9.81

Features

A Hexagon Bolt is a threaded fastener with a hexagonal head shape, and are designed to be installed using a spanner. Hexagon bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts are also generally available in larger sizes than alternative fasteners.

As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together.

Made from 18-8 stainless steel, FullerkregⓇ brand screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.

Screws that meet ASME specifications comply with these dimensional standards.DIMENSIONS: Diameter: 5/16" | Length: 1-1/4" | Thread Type: 18 tpi Coarse Thread (Standard)

Package includes ten each of bolts, hex nuts , Flat & Lock washers

Wheel Accessories Parts 20 Pcs 12Mm 1.25 12X1.25 Thread Acorn Seat Lug Bolt 17Mm Hex 24Mm Thread Length Chrome Fits 2016+ Jeep Renegade

WHEEL ACCESSORIES PARTS
84K549-24
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Wheel Accessories Parts 9.79

Features

❌ These Lug nuts are designed for AFTERMARKET wheels only. This lug may be the correct thread for your vehicle in many cases the lug seat is not large enough to create enough claming force to safely clamp the OE wheel to your vehicle.

12mm 1.25 12x1.25 Thread | 24mmLong | 17mm Hex | 60 Degree Acorn Conical Seat | Acorn Seat | Chrome Finish | Grade 10.9 | 20 Pcs

Designed In USA. Our chrome and black lug bolts are a perfect repleacem. Remember to register your lock key after purchase. Instructions are on the inside panel of the package. Meets or Exceeds OEM Factory Standards.

Cold forged carbon steel. High quality precise threads. Built to SAE Standards. Chrome rust resistant finish

Always use AMAZON CONFIRMED FIT to validate product fitment to your vehicle.

Mr. Gasket 2230G Headlock Locking Header Bolt, (Set Of 12)

MR. GASKET
2230G
0.00 X 0.00 X 0.00 Inches
0.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Serrated teeth grip header flange surface providing a locking action

Thread-lock patch prevents header bolt torque loss and provides positive thread seal

Combination hex/socket head design for easy installation

Made from high-grade stainless steel to resist rust and corrosion

Material specification Grade 8, 150,000 PSI tensile strength

Mr. Gasket 2235G Headlock Locking Header Bolt, (Set Of 12)

MR. GASKET
2235G
0.00 X 0.00 X 0.00 Inches
0.70 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Lipstick Performance 5.05

Features

Serrated teeth grip header flange surface providing a locking action

Thread-lock patch prevents header bolt torque loss and provides positive thread seal

Combination hex/socket head design for easy installation

Made from high-grade stainless steel to resist rust and corrosion

Material specification Grade 8, 150, 000 PSI tensile strength

Jrouth 360 Pcs M6-1.0 M8-1.25 Flange Hex Head Bolts Nuts Flat Lock Washers, Class 10.9 Alloy Steel Black Zinc Plated Metric Flanged Hex Screws, M6 X 12-30Mm And M8 X 16-30Mm Fully Threaded

JROUTH
FL-360PCS
3.96 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
JROUTH 8.26

Features

Flanged Hex Bolts Specification: M6 Bolts Pitch 1.0 mm. Thread Diameter 6 mm; Screw Length include: 12mm/16mm/20mm/25mm/30mm. M8 Bolts Pitch 1.25 mm. Thread Diameter 8 mm; Screw Length include: 16mm/20mm/25mm/30mm.

Flange Design: There have a flange on the bottom of the bolts head, the flange design distributes the load evenly, reducing stress concentration and extending the service life of the bolts. Hex head design of these bolts provides stability and prevents loosening, ensuring safety and reliability.

10.9 Class Alloy Steel: High quality 10.9 grade alloy steel, great strength and corrosion resistance to some extent to make fasteners last. Flanged Hex Bolts can withstand heavy loads and provide stability and reliability in any field that requires high strength and stability.

Package Included: Flanged bolts kit, including M8-1.25 x 16/20/25/30mm (matching with nuts, flat and spring washers) and M6-1.0 x 12/16/20/25/30mm bolts (matching with nuts, flat and spring washers). Total 360 pcs hex bolts nuts washers assortment kit, meet various needs.

Wide Range of Uses: Flange hex head bolt kits are ideal for those who need high strength screws for mechanical equipment, automotive, industrial equipment and construction structures. These bolts are an important part of any project that requires stability and security.(If there is any damage during transportation, please contact us promptly. we will give you a professional service and reply you within 24 hours. We will do our best to provide you a pleasure shopping experience. )

#TOP8

Nef Grade 8 Nut Bolt Washer Assortment, Hex Head Cap Screws, Flat And Lock Washers, Hex Nuts, Coarse Thread, Set Of 1025 Fasteners

NORTHEAST FASTENERS
ASST24HHCSC8
29.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Northeast Fasteners Co., Inc. 9.76

Features

Hex Bolt, Nut and Washer Assortment - Grade 8 - Coarse (USS) - Yellow Zinc - 1025 pieces

Sizes: 1/4, 5/16, 3/8 and 1/2 Inch

Lengths: 3/4, 1, 1 1/2, 2 and 2 1/2 Inch

Includes 24 Hole Metal Storage Compartment with Latch

See Second Image for Detailed Product Information

Top 10 lock bolts Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Mr. Gasket 2
Vigrue 2
Fullerkreg 1
Jrouth 1
Northeast Fasteners 1
Wheel Accessories Parts 1

Top 10 lock bolts Brands Pie Chart


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