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NSI Industries JFM129 - Machine Screw, Steel material, 5/16-18 in. Size, 3 in. length, Flat head, Zinc finish, Slotted drive type, 100 per pack
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NSI Industries JFM129 Machine Screw, Steel material, 5/16-18 in. Size, 3 in. length, Flat head, Zinc finish…

Alternate Item Number: 76529

UPC: 639720765298


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Specification Sheet

Contact for Pricing

Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The NSi Industries JFM129 is a precision-engineered flat head steel machine screw designed for industrial fastening applications requiring a flush, countersunk finish. This 5/16-18 x 3" screw features a zinc finish for corrosion resistance and a slotted drive for compatibility with standard tools. Constructed from high-strength steel, it delivers reliable performance in machinery assembly, equipment mounting, and structural fabrication. The flat head design ensures a smooth surface when installed in countersunk holes, ideal for applications where protrusion must be minimized. Each pack contains 100 screws, optimized for bulk procurement and inventory efficiency. The 5/16-18 thread size is compatible with pre-tapped holes or existing threads, providing a secure mechanical connection. The zinc finish enhances durability in harsh environments while maintaining a professional appearance. This machine screw is a cost-effective solution for large-scale projects where consistent, high-quality fastening is critical. NSi Industries' precision manufacturing ensures dimensional accuracy and thread integrity, reducing installation time and eliminating the need for secondary finishing operations. The slotted drive type remains a reliable choice for manual assembly processes, offering simplicity and compatibility with common tooling. The 3-inch length provides sufficient engagement for most industrial applications, ensuring a stable joint under mechanical stress. The JFM129 is a versatile fastener suitable for use in machinery, enclosures, panels, and structural assemblies where a flush-mounted screw is required.
  • 5/16-18 thread size for secure mechanical connection
  • 3" length provides ample engagement for industrial applications
  • Flat head design ensures flush finish in countersunk holes
  • Zinc finish offers corrosion resistance in harsh environments
  • Slotted drive type compatible with standard screwdrivers
  • 100 screws per pack for bulk procurement efficiency

Specifications

Application
Electrical, Plumbing, Heating and Air Conditioning Industries
Color
Zinc
Drive Type
Slotted
Finish
Zinc
Head Type
Flat
Length
3 IN
Material
Steel
Mounting Type
Flat Head
Series
JFM
Size
5/16-18 IN
Type
Machine Screw
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)
5.700 L
Package Weight (Metric)
2.586 kg
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Frequently Asked Questions

What product type is covered by this specification?

This specification sheet applies to Flat Head Machine Screws.

What materials are these machine screws made from?

The Flat Head Machine Screws are available in Steel and Stainless Steel.

Which series of screws does this document apply to?

This document applies to Flat Head Machine Screws in the FM and FMP series.

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