Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

ARMOR COAT Grade 8 Steel Hex Head Cap Screw - Grade 8 Steel Hex Head Cap Screws
ARMOR COATGrade 8 Steel Hex Head Cap Screws

ARMOR COAT Grade 8 Steel Hex Head Cap Screw

ARMOR COAT Grade 8 Steel Hex Head Cap Screws, 5/16"-18 coarse thread, 3/4 in length, fully threaded, 50-pack (MPN UST237581). Manufactured to ASME B18.2.1 dimensional standards and SAE J429 material quality…

SKU 3G-OTH-678804

Also listed as: UST 237581 · UST-237581

Brand
ARMOR COAT
Item
Grade 8 Steel Hex Head Cap Screw
Part Number
UST237581
Category
Grade 8 Steel Hex Head Cap Screws
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

ARMOR COAT
Manufacturer Part Number
UST237581
Type
Grade 8, Armor Coat, 5/16"-18, Coarse, 3/4 in lg, Fully Threaded, 50 PK
Pack Size
Small Pack
Dimensional Standards
ASME B18.2.1
Made in North America
Yes
System of Measurement
Inch
Hex Head Cap Screw Type
Hex Head Cap Screw
Material Quality Standards
SAE J429

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

ARMOR COAT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

ARMOR COAT Grade 8 Steel Hex Head Cap Screws, 5/16"-18 coarse thread, 3/4 in length, fully threaded, 50-pack (MPN UST237581). Manufactured to ASME B18.2.1 dimensional standards and SAE J429 material quality standards, made in North America.

Frequently Asked Questions

What is a Grade 8 steel hex head cap screw used for?

A Grade 8 steel hex head cap screw is used in high-strength fastening applications such as heavy machinery, automotive assemblies, and structural steel connections. The ARMOR COAT 5/16"-18 screw, 3/4 in long, provides reliable clamping force in demanding industrial environments.

What are the specifications of the ARMOR COAT hex head cap screw?

The ARMOR COAT hex head cap screw is Grade 8 steel, 5/16"-18 coarse thread, 3/4 in length, fully threaded, in a 50-pack. It meets ASME B18.2.1 dimensional standards and SAE J429 material quality standards, and is made in North America.

Where to buy ARMOR COAT hex head cap screws worldwide?

3G Electric supplies ARMOR COAT hex head cap screws worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine fasteners like the Grade 8 5/16"-18 screw to your facility, regardless of location.

How to select the right hex head cap screw for heavy-duty applications?

Select a Grade 8 steel hex head cap screw for high tensile strength applications. Verify thread size, length, and coating—ARMOR COAT provides corrosion resistance. Always confirm dimensional compliance with ASME B18.2.1 and material standards like SAE J429 for reliable performance.

Not sure this is the right part? Photo-identify it

ARMOR COAT Products

3G Electric supplies ARMOR COAT grade 8 steel hex head cap screws. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from ARMOR COAT

View all ARMOR COAT parts
Grade 8 steel hex head cap screw with Armor Coat finish, 5/16"-18 coarse thread, 1-3/4 in length. Manufactured to SAE J429 material standards and ASME B18.2.1 dimensional standards. Suitable for heavy-duty fastening in machinery assembly, structural connections, and equipment mounting. Pack of 50
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish, 5/16"-18 coarse thread, 1-3/4 in length. Manufactured to SAE J429 material standards and ASME B18.2.1 dimensional standards. Suitable for heavy-duty fastening in machinery assembly, structural connections, and equipment mounting. Pack of 50
Grade 8 steel hex head cap screw with Armor Coat finish, 5/16"-18 coarse thread, 1-1/2 in length. Meets SAE J429 material and ASME B18.2.1 dimensional standards. Supplied in a 50-pack. Used for high-strength fastening in heavy machinery, automotive, and structural assemblies
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish, 5/16"-18 coarse thread, 1-1/2 in length. Meets SAE J429 material and ASME B18.2.1 dimensional standards. Supplied in a 50-pack. Used for high-strength fastening in heavy machinery, automotive, and structural assemblies
Grade 8 steel hex head cap screw with Armor Coat finish, 1/2"-13 coarse thread, 5-1/2 in length. Meets SAE J429 material quality and ASME B18.2.1 dimensional standards. Suitable for high-strength fastening in heavy machinery, automotive, and industrial equipment applications. Sold in a 5-pack
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish, 1/2"-13 coarse thread, 5-1/2 in length. Meets SAE J429 material quality and ASME B18.2.1 dimensional standards. Suitable for high-strength fastening in heavy machinery, automotive, and industrial equipment applications. Sold in a 5-pack
Grade 8 steel hex head cap screw with Armor Coat finish, 3/8"-16 coarse thread, 2 in length, partially threaded. Meets ASME B18.2.1 and SAE J429 standards. Suitable for heavy-duty fastening in machinery assembly and structural connections
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish, 3/8"-16 coarse thread, 2 in length, partially threaded. Meets ASME B18.2.1 and SAE J429 standards. Suitable for heavy-duty fastening in machinery assembly and structural connections
Grade 8 steel hex head cap screw with Armor Coat finish. Measures 5/16"-18 coarse thread, 4 inches long, partially threaded. Meets ASME B18.2.1 dimensional and SAE J429 material standards. Suitable for high-stress fastening in heavy machinery, structural steel, and automotive applications
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish. Measures 5/16"-18 coarse thread, 4 inches long, partially threaded. Meets ASME B18.2.1 dimensional and SAE J429 material standards. Suitable for high-stress fastening in heavy machinery, structural steel, and automotive applications
Grade 8 steel hex head cap screw with Armor Coat finish, 3/8"-16 coarse thread, 3/4 in length, fully threaded. Meets ASME B18.2.1 and SAE J429 standards. Suitable for high-stress bolting in heavy machinery, structural steel connections, and equipment mounting
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish, 3/8"-16 coarse thread, 3/4 in length, fully threaded. Meets ASME B18.2.1 and SAE J429 standards. Suitable for high-stress bolting in heavy machinery, structural steel connections, and equipment mounting
Grade 8 hex head cap screw with Armor Coat finish, 1/4"-20 thread size, coarse thread, 1-3/4 in length. Meets SAE J429 material quality and ASME B18.2.1 dimensional standards. Suitable for heavy-duty bolting in machinery assembly and structural connections
ARMOR COAT
Grade 8 hex head cap screw with Armor Coat finish, 1/4"-20 thread size, coarse thread, 1-3/4 in length. Meets SAE J429 material quality and ASME B18.2.1 dimensional standards. Suitable for heavy-duty bolting in machinery assembly and structural connections
Grade 8 steel hex head cap screw with Armor Coat finish, 3/8"-16 coarse thread, 3-1/2 in length, inch system. Meets SAE J429 material standards and ASME B18.2.1 dimensional standards. Suitable for high-stress fastening in heavy machinery, structural steel, and automotive assemblies. Sold in a 10-pack
ARMOR COAT
Grade 8 steel hex head cap screw with Armor Coat finish, 3/8"-16 coarse thread, 3-1/2 in length, inch system. Meets SAE J429 material standards and ASME B18.2.1 dimensional standards. Suitable for high-stress fastening in heavy machinery, structural steel, and automotive assemblies. Sold in a 10-pack