Skip to main content
Home / Screws / 304 Stainless Steel Socket Head Cap Screw Hex Bolt Nut Washer Set Grade 12.9 Cylinder Head Assortment Box

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Head Style Socket Head Cap (Cylinder)
Drive Type Internal Hexagon
Grade Rating Grade 12.9 Equivalent Strength
Finish Polished Silver
Corrosion Resistance High (Rust Resistant)
Package Type Compartmentalized Assortment Box
Included Components Bolts, Nuts, and Washers
Thread Type Metric Coarse Thread
Application Machinery, Automotive, and DIY Projects

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for automotive repairs

Needed specific sizes for an engine cover replacement. These held up well under torque and show no signs of rust after a few months.

A

Anonymous

Mar 29, 2026

Rating: 5/5

Excellent quality assortment

The stainless steel finish is top-notch and the box organization makes finding the right size very easy. Great value for the price.

A

Anonymous

Mar 27, 2026

Rating: 4/5

Good variety, sturdy box

I use these for my workshop projects. The heads fit my hex keys perfectly. One compartment was slightly loose, but overall a solid purchase.

A

Anonymous

Mar 22, 2026

Rating: 4/5

Solid hardware set

The threads are clean and cut precisely. I deducted one star because I wished there were more of the smaller sizes included.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Highly recommended

Very professional looking bolts. The internal hex drive is deep enough to prevent stripping. Will buy again when I run out.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Great for DIY enthusiasts

Having nuts and washers included in the set saved me a trip to the hardware store. The metal feels durable and high-quality.

5 FAQ

Q: Does this set include an Allen key?

A: No, this assortment box contains only the bolts, nuts, and washers. Tools are not included.

Q: Are these bolts suitable for outdoor use?

A: Yes, since they are made from 304 Stainless Steel, they offer excellent corrosion resistance and are suitable for outdoor environments.

Q: Are the threads metric or imperial?

A: This specific assortment features standard Metric coarse threads. Please check the product label for specific size ranges.

Q: What is the tensile strength of Grade 12.9?

A: Grade 12.9 indicates a minimum tensile strength of 1200 MPa, making these suitable for high-stress applications.

Q: Can I return the set if the sizes don't match my needs?

A: Absolutely. We offer a 30-day return policy for unused items in their original packaging.

Explore your interests

All Categories
Best Seller (30)
New List (30)
Baohong Watercolor Sketchbook - Glued on Four Sides, 32K/16K/8K, 200g/300g Cotton Pulp Paper for Postcards, Travel Sketching, and Oil Pastels

Baohong Watercolor Sketchbook - Glued on Four Sides, 32K/16K/8K, 200g/300g Cotton Pulp Paper for Postcards, Travel Sketching, and Oil Pastels

$20.00

Kitchen Sink Storage Rack Multi-Function Dish Drying Shelf Over-Sink Organizer Bowl Cabinet

Kitchen Sink Storage Rack Multi-Function Dish Drying Shelf Over-Sink Organizer Bowl Cabinet

$105.00

Blower Motor Compatible with Corolla, Crown, Camry, Highlander, Crown, Reiz, RAV4, Prado, Land Cruiser

Blower Motor Compatible with Corolla, Crown, Camry, Highlander, Crown, Reiz, RAV4, Prado, Land Cruiser

$234.32

Copic Airbrush - Marker Rendering Tool (Cannot Be Used Directly), Model ABS-3, Compatible with Copic Series 1 and 2

Copic Airbrush - Marker Rendering Tool (Cannot Be Used Directly), Model ABS-3, Compatible with Copic Series 1 and 2

$285.00

Beijing Hezhong Dental Implant Service - Includes Implant and Abutment at Central Procurement Prices; Korean Dentium and American Implant Options Available

Beijing Hezhong Dental Implant Service - Includes Implant and Abutment at Central Procurement Prices; Korean Dentium and American Implant Options Available

$1.00

Mini Watercolor Paint Set with Carry Case for Travel Sketching, Journaling, and Students

Mini Watercolor Paint Set with Carry Case for Travel Sketching, Journaling, and Students

$5.50

PGYTECH Dandelion SD Card Case for DSLR and Mirrorless Cameras - Portable TF Memory Card, SIM Card, and XD Card Holder

PGYTECH Dandelion SD Card Case for DSLR and Mirrorless Cameras - Portable TF Memory Card, SIM Card, and XD Card Holder

$84.10

UE4 Unreal Engine 5 Indie Friendly Sounds RPG Sounds Pack - Game-Ready Audio Effects

UE4 Unreal Engine 5 Indie Friendly Sounds RPG Sounds Pack - Game-Ready Audio Effects

$0.50

G80 Manganese Steel Lifting Chain Rigging with Double or Quadruple Hooks, Lifting Rings, and Crane Hooks

G80 Manganese Steel Lifting Chain Rigging with Double or Quadruple Hooks, Lifting Rings, and Crane Hooks

$63.00

Mont Marte Long-Handle Bristle Brush for Acrylic Paint, Art Flat Brush, Oil Painting Brush

Mont Marte Long-Handle Bristle Brush for Acrylic Paint, Art Flat Brush, Oil Painting Brush

$4.00

Stylish Portable Invisible Braces Case for Kids' Orthodontic Retainers and Cleaning

Stylish Portable Invisible Braces Case for Kids' Orthodontic Retainers and Cleaning

$12.40

Used Car Tires (80-90% New) in Sizes 165, 175, 185, 195, 205, 215, 225 - Code 551456

Used Car Tires (80-90% New) in Sizes 165, 175, 185, 195, 205, 215, 225 - Code 551456

$65.00

Commercial and Home Dual-Head Stainless Steel Vegetable Slicer for Cafeterias and Restaurants - Direct from Manufacturer (Slices, Dices, Julienne)

Commercial and Home Dual-Head Stainless Steel Vegetable Slicer for Cafeterias and Restaurants - Direct from Manufacturer (Slices, Dices, Julienne)

$2,142.00

Mountain Ghost Spending Money Cinnabar Coloring Tool Five Emperor Copper Coin Coloring Wood Carving Stone Tablet Taishan Stone Inscription Non-Fading Landscape Buddha Guan Calligraphy Fine Brush Traditional Seal Script Coloring Pen Tracing

Mountain Ghost Spending Money Cinnabar Coloring Tool Five Emperor Copper Coin Coloring Wood Carving Stone Tablet Taishan Stone Inscription Non-Fading Landscape Buddha Guan Calligraphy Fine Brush Traditional Seal Script Coloring Pen Tracing

$17.60

Wide-Opening Chain Sling Assembly with Hooks - Heavy-Duty Lifting Gear, Iron Chains, and Crane Hoist Hooks

Wide-Opening Chain Sling Assembly with Hooks - Heavy-Duty Lifting Gear, Iron Chains, and Crane Hoist Hooks

$145.00

Sketch Blending Stump Set for Artists, Detail Highlight and Shadow Smudging Tools, Cotton Swabs, Scraper, and Sponge Pen Refills

Sketch Blending Stump Set for Artists, Detail Highlight and Shadow Smudging Tools, Cotton Swabs, Scraper, and Sponge Pen Refills

$6.80

Mini Watercolor Paint Set with Walnut Wood Board, Portable Easel, and Travel Sketchbook

Mini Watercolor Paint Set with Walnut Wood Board, Portable Easel, and Travel Sketchbook

$4.68

Modern Housewife Kitchen Sink Organizer - Foldable Dish Drying Rack and Storage Shelf

Modern Housewife Kitchen Sink Organizer - Foldable Dish Drying Rack and Storage Shelf

$44.20

Skid-Mounted Integrated Screw Air Compressor for Laser Cutting - 15kW/22kW/37kW, 16kg, Permanent Magnet VFD

Skid-Mounted Integrated Screw Air Compressor for Laser Cutting - 15kW/22kW/37kW, 16kg, Permanent Magnet VFD

$23,500.00

Wooden Handle Leather Rattle Drum Baby Toy Glue-Free Paint-Free for Ages 1+ Boys and Girls Wooden Shaker

Wooden Handle Leather Rattle Drum Baby Toy Glue-Free Paint-Free for Ages 1+ Boys and Girls Wooden Shaker

$8.42

[Folded Booklet] Liu Chunlin: Palace Examination Essay Final Zhuangyuan Small Regular Script Calligraphy Copybook Original Size Long Scroll

[Folded Booklet] Liu Chunlin: Palace Examination Essay Final Zhuangyuan Small Regular Script Calligraphy Copybook Original Size Long Scroll

$14.20

Stainless Steel Sponge Drain Rack - No-Drill Wall-Mounted Kitchen Sink Organizer for Steel Wool and Scrub Pads

Stainless Steel Sponge Drain Rack - No-Drill Wall-Mounted Kitchen Sink Organizer for Steel Wool and Scrub Pads

$2.60

Analysis of Wang Duo's Classical Poetry Composition Techniques (50 Analyses + 50 Comparisons)

Analysis of Wang Duo's Classical Poetry Composition Techniques (50 Analyses + 50 Comparisons)

$89.00

Custom Sheet Music Transcription Service for 'Farewell Letter' for Saxophone, Clarinet, Flute, Trumpet, Violin, and Cello

Custom Sheet Music Transcription Service for 'Farewell Letter' for Saxophone, Clarinet, Flute, Trumpet, Violin, and Cello

$12.00

Japanese Surplus san-x Rilakkuma Bowl Set - Oven-Safe Bowl with Base and Two Forks for Ice Cream or Hot Pot

Japanese Surplus san-x Rilakkuma Bowl Set - Oven-Safe Bowl with Base and Two Forks for Ice Cream or Hot Pot

$69.90

Guangda Dental | Swiss Dental Implants Including Abutment, Implant Body, and Crown, Improves Chewing, Restores Missing Teeth

Guangda Dental | Swiss Dental Implants Including Abutment, Implant Body, and Crown, Improves Chewing, Restores Missing Teeth

$3,900.00

50pcs Merry Christmas Gift Tags Printed White Paper Labels X

50pcs Merry Christmas Gift Tags Printed White Paper Labels X

$26.44

Kabaxiong Color Gel Pens - Retractable Morandi Style, High-Aesthetic Japanese INS Set for Journaling and Marking

Kabaxiong Color Gel Pens - Retractable Morandi Style, High-Aesthetic Japanese INS Set for Journaling and Marking

$8.88

Continental Tires 225 235 245 255 275/35 40 45 50 55R17 18 19 20 21 22

Continental Tires 225 235 245 255 275/35 40 45 50 55R17 18 19 20 21 22

$350.00

Portable Invisible Aligner Case for Orthodontic Retainers - Compact, Breathable Storage Box for Teeth Correctors and Dentures

Portable Invisible Aligner Case for Orthodontic Retainers - Compact, Breathable Storage Box for Teeth Correctors and Dentures

$18.80