Dottie 1/4-20 x 3 in Slotted Flat Head Machine Screw FM143 (100-Pack)

Product Overview

The Dottie FM143 is a slotted flat head machine screw sized 1/4-20 x 3 in and supplied as a 100-count pack for contractor and facility use.

This zinc-plated flat head machine screw is cataloged for mechanical fastening, bracket/support assembly, and electrical maintenance when the listed size and type match project requirements.

Key Features

• Manufacturer part number: FM143 for procurement and stock matching
• Size/format: 1/4-20 x 3 in (threaded machine screw)
• Head style: flat head with slotted drive
• Finish/category: Zinc plated (Dottie category: Zinc Plated Screws)
• Pack quantity: 100 pieces (standard quantity UOM C)
• UPC: 00781002652168 for barcode-based receiving

What this screw is used for

The FM143 is intended for mechanical fastening tasks where a 1/4-20 x 3 in slotted flat head machine screw is specified. It is commonly stocked by electricians, contractors, and maintenance teams for bracket and support assembly, electrical equipment fastening, and general service work when the listed size and head style are required.

• Applications listed by catalog: mechanical fastening, bracket and support assembly, electrical maintenance work, contractor fastener stock
• Pack format (100) supports replenishment and job-box stocking

Key technical details

Use these verified identifiers to confirm compatibility with project requirements and procurement records.

• Manufacturer model / SKU: FM143
• Size / Format: 1/4-20 x 3 in
• Head: slotted flat head
• Finish / Category: Zinc plated (Dottie category: Zinc Plated Screws)
• UPC: 00781002652168
• Pack quantity: 100 (Unit of Measure: C)

Compatibility and installation notes

Confirm mating hardware, thread engagement, mounting surface, and material compatibility before installation. Follow job specifications and any applicable local electrical or building codes for installed work.

• Verify thread size (1/4-20) and length (3 in) against the receiving part or tapped hole
• Confirm finish and environment suitability (zinc plating) for your application
• Match head style (flat head, slotted drive) to countersink or access requirements

Before You Order

Confirm the model number (FM143), size (1/4-20 x 3 in), head style, and quantity required before ordering to ensure compatibility with your project and procurement records.

• Verify thread size and required thread engagement for mating parts
• Confirm zinc-plated finish is acceptable for the installation environment
• Ensure slotted flat head drive and head profile meet countersink or access needs

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Dottie 1/4-20 x 3 in Slotted Flat Head Machine Screw FM143 (100-Pack). For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.