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USA INDUSTRIALS Hex Head Cap Screw: Steel, Grade 8, Zinc Yellow, 1/2"-20, Fine, 4 in lg - Grade 8 Steel Hex Head Cap Screws
USA INDUSTRIALSGrade 8 Steel Hex Head Cap Screws

USA INDUSTRIALS Hex Head Cap Screw: Steel, Grade 8, Zinc Yellow, 1/2"-20, Fine, 4 in lg

USA INDUSTRIALS Grade 8 Steel Hex Head Cap Screws (SKU 3G-OTH-678884) are inch-system fasteners with a zinc-yellow finish, 1/2"-20 fine thread, 4-inch length, fully threaded, in a 5-pack. Manufactured to ASME B18.2.1…

SKU 3G-OTH-678884

Also listed as: ZBOLT3871 · ZBOLT 3871

Brand
USA INDUSTRIALS
Item
Hex Head Cap Screw: Steel, Grade 8, Zinc Yellow, 1/2"-20, Fine, 4 in lg
Category
Grade 8 Steel Hex Head Cap Screws
Available to Order
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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

USA INDUSTRIALS
Manufacturer Part Number
ZBOLT-3871
Type
Grade 8, Zinc Yellow, 1/2"-20, Fine, 4 in lg, Fully Threaded, Inch, 5 PK
Pack Size
Small Pack
Dimensional Standards
ASME B18.2.1
Manufacturer Location
Globally Sourced
System of Measurement
Inch
Hex Head Cap Screw Type
Hex Head Cap Screw
Material Quality Standards
SAE J429

Technical Documents

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USA INDUSTRIALS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

USA INDUSTRIALS Grade 8 Steel Hex Head Cap Screws (SKU 3G-OTH-678884) are inch-system fasteners with a zinc-yellow finish, 1/2"-20 fine thread, 4-inch length, fully threaded, in a 5-pack. Manufactured to ASME B18.2.1 dimensional standards and SAE J429 material quality standards, these globally sourced hex head cap screws are suitable for high-strength bolting applications.

Frequently Asked Questions

What are Grade 8 steel hex head cap screws used for?

Grade 8 steel hex head cap screws are used in high-strength bolting applications such as heavy equipment assembly, structural steel connections, and automotive drivetrain mounting. Their zinc-yellow finish provides moderate corrosion resistance. USA INDUSTRIALS supplies these globally sourced fasteners to industrial maintenance and fabrication operations worldwide.

What are the specifications of USA INDUSTRIALS Grade 8 hex head cap screw ZBOLT-3871?

USA INDUSTRIALS ZBOLT-3871 is a Grade 8 steel hex head cap screw with a zinc-yellow finish, 1/2"-20 fine thread, 4-inch length, fully threaded, in a 5-pack. It meets ASME B18.2.1 dimensional standards and SAE J429 material quality standards. This inch-system fastener is suitable for high-strength bolting applications.

Where to buy USA INDUSTRIALS Grade 8 hex head cap screws worldwide?

3G Electric supplies USA INDUSTRIALS Grade 8 hex head cap screws worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the ZBOLT-3871 5-pack or other pack sizes. We source genuine fasteners to meet your project requirements.

How to select the right Grade 8 hex head cap screw for an application?

Select Grade 8 hex head cap screws based on thread size, length, and grade. For high-strength bolting, ensure the fastener meets SAE J429 Grade 8 and ASME B18.2.1 dimensional standards. Match the thread pitch (fine or coarse) to the mating nut or tapped hole. USA INDUSTRIALS offers inch-system fasteners like the 1/2"-20 fine thread ZBOLT-3871 for demanding applications.

Used in

Common applications for USA INDUSTRIALS
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Pharmaceutical manufacturing — USA INDUSTRIALS 316 stainless steel globe valves for precise flow control in clean-room environments.
General industrial MRO — USA INDUSTRIALS polypropylene cam-and-groove fittings for temporary hose connections in plant maintenance.

USA INDUSTRIALS Products

3G Electric supplies USA INDUSTRIALS 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.

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Hex Head Cap Screw: Steel, Grade 8, Zinc Yellow, 7/16"-14, Coarse, 7 1/2 in lg, 5/8 in Head Wd, 5 PK (MPN ZBOLT-3808)
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Hex Head Cap Screw: Stainless Steel, 18-8, Plain, 1/2"-13, Coarse, 2 3/4 in lg, Inch, 10 PK (MPN ZBOLT-4557)
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Hex Head Cap Screw: Stainless Steel, 18-8, Plain, 1/2"-13, Coarse, 2 3/4 in lg, Inch, 10 PK (MPN ZBOLT-4557)
Hex Head Cap Screw: Stainless Steel, 18-8, Plain, 1/2"-13, Coarse, 4 in lg, Fully Threaded, 5 PK (MPN ZBOLT-4565)
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Hex Head Cap Screw: Stainless Steel, 18-8, Plain, 1/2"-13, Coarse, 4 in lg, Fully Threaded, 5 PK (MPN ZBOLT-4565)
Hex Head Cap Screw: Stainless Steel, 18-8, Plain, 1/4"-20, Coarse, 2 1/4 in lg, Inch, 50 PK (MPN ZBOLT-4590)
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Hex Head Cap Screw: Stainless Steel, 18-8, Plain, 1/4"-20, Coarse, 2 1/4 in lg, Inch, 50 PK (MPN ZBOLT-4590)

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