NSI Industries JRM99SLT - 1/4-20 x 1/2 Round Head Slot Machine Screw Steel - Zinc
NSI Industries

JRM99SLT

Alternate Item Number: 28840

UPC: 639720288407


Documents & Media
Specification Sheet

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Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Overview

The NSi Industries JRM99SLT is a 1/4-20 x 1/2 inch round head slotted machine screw manufactured in the USA. Constructed from durable carbon steel with a zinc-plated finish, this fastener delivers reliable corrosion resistance and long-lasting performance in industrial environments. The round head provides a smooth, low-profile finish ideal for applications requiring a clean appearance or where protruding heads are undesirable. The slotted drive design allows for straightforward installation and removal using a standard flat-head screwdriver, ensuring compatibility with common hand tools. Designed for use in existing or predrilled, pre-tapped holes, the JRM99SLT is suitable for equipment assembly, machinery maintenance, general fabrication, and light-duty structural applications. Its 1/4-20 thread pitch and 1/2 inch length provide secure fastening in metal-to-metal joints, electrical enclosures, and machinery frames. The zinc coating enhances durability by protecting against rust and oxidation, making it ideal for both indoor and outdoor use where moderate exposure to moisture or chemicals is expected.
  • 1/4-20 thread size with 1/2 inch length for secure metal-to-metal fastening
  • Round head design provides a smooth, low-profile finish
  • Slotted drive for easy installation and removal with standard tools
  • Zinc-plated steel construction for corrosion resistance
  • Manufactured in the USA by NSi Industries for consistent quality
  • Manufactured in the USA

Specifications

Color
Zinc
Head Type
Round
Length
1/2 in
Material
Steel
Material
Zinc
Material Quality
Zinc
Size
1/4-20
Size
1/4-20 x 1/2
Type
Machine Screw
Package Dimensions (L x W x H)
3 IN x 3 IN x 2.15 IN
Package Dimensions (L x W x H)
7.62 cm x 7.62 cm x 5.461 cm
Package Weight (Imperial)
0.990 L
Package Weight (Metric)
0.449 kg
5-40 x 1/2 Flat Head Slot Machine Screw Zinc

JFM31

5-40 x 1/2 Flat Head Slot Machine Screw Zinc
A machine screw with external threads for use with a pre-tapped hole or a nut. It is made of steel with a zinc plated finish. The screw is 10-24 x 1/2 in with a round head and slotted/Phillips combo drive.

52608

A machine screw with external threads for use with a pre-tapped hole or a nut. It is made of steel with a zinc plated finish. The screw is 10-24 x 1/2 in with a round head and slotted/Phillips combo drive.
APO Tamper Proof Cover Screw Tool, Mill, Unpainted, Stainless Steel, 11810.025

11810.025

APO Tamper Proof Cover Screw Tool, Mill, Unpainted, Stainless Steel, 11810.025

Frequently Asked Questions

What product type does this specification sheet cover?

This specification sheet applies to Round Head Machine Screws.

What materials are available for these machine screws?

These machine screws are available in Steel, Stainless Steel, Brass, and Silicone Bronze.

Which screw series are covered by this specification sheet?

This sheet applies to RM, JRM (excluding JRMB and JRMN), SRM, and RSB series of screws.

What product type does this specification sheet cover?

This specification sheet applies to Round Head Machine Screws.

What materials are available for these machine screws?

These machine screws are available in Steel, Stainless Steel, Brass, and Silicone Bronze.

Which screw series are covered by this specification sheet?

This sheet applies to RM, JRM (excluding JRMB and JRMN), SRM, and RSB series of screws.

What product type does this specification sheet cover?

This specification sheet applies to Round Head Machine Screws.

What materials are available for these machine screws?

These machine screws are available in Steel, Stainless Steel, Brass, and Silicone Bronze.

Which screw series are covered by this specification sheet?

This sheet applies to RM, JRM (excluding JRMB and JRMN), SRM, and RSB series of screws.

What product type does this specification sheet cover?

This specification sheet applies to Round Head Machine Screws.

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