NSI Industries JCB28 - Carriage Bolt, Steel material, Zinc, Mushroom Head, 4 in. length, 3/8-16 in. Size, Right Hand thread, 50 per pack
NSI Industries

JCB28

Alternate Item Number: 83052

UPC: 639720830521


Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 50

Multiplier: 50

*Contact for lower quantities*

Overview

NSi Industries JCB28 Carriage Bolt is a precision-engineered steel fastener designed for heavy-duty industrial and construction applications. Made from durable steel with a zinc plating for corrosion resistance, this bolt features a mushroom head for a flush, secure fit in countersunk holes. The 4-inch length and 3/8-16 right-hand thread provide reliable fastening for wood-to-wood or metal-to-wood connections. Ideal for framing, decking, and structural assemblies, the JCB28 ensures long-lasting performance in outdoor and high-stress environments. Packaged in quantities of 50, it’s optimized for bulk projects, inventory stocking, and repeat use. NSi Industries, a US-based manufacturer, adheres to rigorous industry standards for consistent quality and dimensional accuracy. The zinc plating offers up to 500 hours of salt spray resistance per ASTM B117, extending service life in corrosive conditions. Thread pitch is 16 threads per inch, ensuring compatibility with standard 3/8-16 nuts and washers.
  • Material: Steel with zinc plating for corrosion resistance
  • Head Type: Mushroom head for flush, countersunk installation
  • Thread Specs: 3/8-16 right-hand thread, 16 threads per inch
  • Length: 4 inches (nominal)
  • Pack Quantity: 50 bolts per box

Specifications

Application
Electrical, Plumbing, Heating, Air Conditioning Industries
Finish
Zink Chromate
Head Type
Mushroom Head
Length
4 IN
Material
Steel
Size
3/8-16 IN
Thread
Right Hand
Thread Type
Right Hand
Type
Carriage Bolt
Package Dimensions (L x W x H)
4.5 IN x 4.5 IN x 7.25 IN
Package Dimensions (L x W x H)
11.43 cm x 11.43 cm x 18.415 cm
Package Weight (Imperial)
6.100 L
Package Weight (Metric)
2.767 kg
Carriage Bolt, Steel material, Zinc, Mushroom Head, 4-1/2 in. length, 1/4-20 in. Size, Right Hand thread, 100 per pack

JCB36

Carriage Bolt, Steel material, Zinc, Mushroom Head, 4-1/2 in. length, 1/4-20 in. Size, Right Hand thread, 100 per pack
This is a steel carriage bolt with a round head and zinc plated finish. It is sized 5/16-18 x 4 in. with a 5/16 in. diameter and 18 threads per inch. The square neck is designed to keep the bolt from turning as a nut is tightened.

55364

This is a steel carriage bolt with a round head and zinc plated finish. It is sized 5/16-18 x 4 in. with a 5/16 in. diameter and 18 threads per inch. The square neck is designed to keep the bolt from turning as a nut is tightened.

Frequently Asked Questions

What product type does this specification sheet cover?

This specification sheet applies to Carriage Bolts.

What materials are used for the JCB series carriage bolts?

The carriage bolts are made from 18-8 Stainless Steel and 316 Stainless Steel.

Which product series do these stainless steel carriage bolts belong to?

These carriage bolts are part of the JCB series.

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