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

USA INDUSTRIALS Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 3 1/2 in lg, Stainless Steel - 316 Stainless Steel Square Neck Carriage Bolts
USA INDUSTRIALS316 Stainless Steel Square Neck Carriage Bolts

USA INDUSTRIALS Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 3 1/2 in lg, Stainless Steel

USA INDUSTRIALS 316 Stainless Steel Square Neck Carriage Bolts, 1/4"-20 thread size, 3 1/2 in long, plain finish, sold in packs of 5 (MPN ZBOLT-4981).

SKU 3G-OTH-689686

Brand
USA INDUSTRIALS
Item
Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 3 1/2 in lg, Stainless Steel
Category
316 Stainless Steel Square Neck Carriage Bolts
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

Technical Specifications

USA INDUSTRIALS
Manufacturer Part Number
ZBOLT-4981
Type
3 1/2 in lg, Stainless Steel, 316, Plain, 5 PK
Thread Size
1/4"-20
View Full Spec Sheet

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

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

Product Description

USA INDUSTRIALS 316 Stainless Steel Square Neck Carriage Bolts, 1/4"-20 thread size, 3 1/2 in long, plain finish, sold in packs of 5 (MPN ZBOLT-4981).

Frequently Asked Questions

What is a 316 stainless steel square neck carriage bolt used for?

A 316 stainless steel square neck carriage bolt is used for fastening metal to wood or metal to metal in corrosive environments. The square neck prevents rotation during tightening, making it ideal for marine, chemical, and outdoor applications where corrosion resistance is critical.

What are the specifications of USA INDUSTRIALS ZBOLT-4981 carriage bolt?

The USA INDUSTRIALS ZBOLT-4981 carriage bolt has a 1/4"-20 thread size, is 3 1/2 inches long, made of 316 stainless steel with a plain finish, and comes in a pack of 5. The square neck design ensures secure fastening without spinning.

Where to buy USA INDUSTRIALS carriage bolts in worldwide?

3G Electric supplies USA INDUSTRIALS carriage bolts worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on the ZBOLT-4981 or other industrial fasteners across 14 departments.

How to install a square neck carriage bolt?

To install a square neck carriage bolt, insert the bolt through a pre-drilled hole matching the square neck size. The square neck embeds into the material, preventing rotation. Tighten the nut from the opposite side with a wrench. Use a washer under the nut for even load distribution.

Used in

Common applications for USA INDUSTRIALS
Chemical processing — USA INDUSTRIALS FEP-encapsulated silicone cam-and-groove gaskets for corrosion-resistant sealing in coupling systems.
Food and beverage — USA INDUSTRIALS food-grade FKM cam-and-groove gaskets for sanitary fluid transfer in processing lines.
Water treatment — USA INDUSTRIALS 304 stainless steel gate valves for isolation in piping systems handling non-potable water.
Oil and gas — USA INDUSTRIALS brass ball valves for manual shut-off in low-pressure gas or fluid lines.
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 316 stainless steel square neck carriage bolts. 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 USA INDUSTRIALS

View all USA INDUSTRIALS parts
Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 3/4 in lg, Stainless Steel, 316, Plain, 10 PK (MPN ZBOLT-4983)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 1/4"-20 Thread Size, 3/4 in lg, Stainless Steel, 316, Plain, 10 PK (MPN ZBOLT-4983)
Carriage Bolt: Square Neck, 1/2"-13 Thread Size, 3 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-4972)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 1/2"-13 Thread Size, 3 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-4972)
Carriage Bolt: Square Neck, 1/2"-13 Thread Size, 2 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-4970)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 1/2"-13 Thread Size, 2 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-4970)
Carriage Bolt: Square Neck, 5/16"-18 Thread Size, 1 in lg, Stainless Steel, 316, Plain, 10 PK (MPN ZBOLT-5006)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 5/16"-18 Thread Size, 1 in lg, Stainless Steel, 316, Plain, 10 PK (MPN ZBOLT-5006)
Carriage Bolt: Square Neck, 5/16"-18 Thread Size, 3 in lg, Stainless Steel, 316, Plain, 5 PK (MPN ZBOLT-5010)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 5/16"-18 Thread Size, 3 in lg, Stainless Steel, 316, Plain, 5 PK (MPN ZBOLT-5010)
Carriage Bolt: Square Neck, 3/8"-16 Thread Size, 4 1/2 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-5000)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 3/8"-16 Thread Size, 4 1/2 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-5000)
Carriage Bolt: Square Neck, #10-24 Thread Size, 3/4 in lg, Stainless Steel, 316, Plain, 10 PK (MPN ZBOLT-4990)
USA INDUSTRIALS
Carriage Bolt: Square Neck, #10-24 Thread Size, 3/4 in lg, Stainless Steel, 316, Plain, 10 PK (MPN ZBOLT-4990)
Carriage Bolt: Square Neck, 5/16"-18 Thread Size, 6 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-5015)
USA INDUSTRIALS
Carriage Bolt: Square Neck, 5/16"-18 Thread Size, 6 in lg, Stainless Steel, 316, Plain (MPN BULK-BOLT-5015)