5/16 Flat Washer
- Buy 50 or more $0.15 Save 12%
- Buy 200 or more $0.14 Save 18%
- Buy 500 or more $0.12 Save 29%
5/16 Flat Washer
Bobco's 5/16 Flat Washers are essential industrial hardware components designed to evenly distribute the load of threaded fasteners like bolts and screws. Made from durable low carbon steel, these washers prevent surface damage and ensure a secure, long-lasting connection in MRO and fabrication projects.
- Material: Low Carbon Steel
- Standard: Conforms to ASTM F844
- Function: Load Distribution
- Application: General Purpose Fastening
These 5/16 inch flat washers are manufactured from high-quality low carbon steel, providing a reliable balance of strength and formability for general-purpose applications. Conforming to the dimensional and material specifications of ASTM F844, they are engineered for compatibility with standard bolts and screws, including Grade 2 fasteners. The plain finish offers a clean surface, ready for use or for post-treatment finishing if required. Their precise manufacturing ensures consistent thickness and diameter for dependable performance in bulk assembly and MRO tasks.
Primarily used in construction, machinery assembly, and general fabrication, 5/16 flat washers are indispensable for creating secure bolted joints. By increasing the bearing surface under the fastener's head and nut, they prevent pull-through and damage to softer materials like wood or thin-gauge metal. They are a staple for MRO professionals in the Los Angeles area for everything from equipment repair to structural framework assembly, providing a simple but critical solution for maintaining joint integrity and distributing clamping forces effectively.
Specifications
- Material: Low Carbon Steel
- Standards: ASTM F844, ASME B18.21.1
- Strength/Tensile: Suitable for use with Grade 2 (ASTM A307) bolts
- Dimensions: Nominal Size: 5/16"
- Finish: Plain Finish, Zinc-Plated (ASTM B633)
- Certifications: Mill Test Reports (MTR) available upon request.
Applications
- Construction & Framing: Used with bolts in light-duty wood and steel framing to distribute load and prevent pull-through.
- Machinery & Equipment Assembly: Essential for securing components and preventing fastener pull-through on equipment panels and frames.
- MRO (Maintenance, Repair, & Operations): Standard stock for general repairs, replacing worn washers, and securing parts on industrial equipment.
- Metal Fabrication: Used in the assembly of fabricated parts, brackets, supports, and commercial hardware installations.
Target Users
Ideal for fabricators, construction crews, maintenance technicians, and MRO professionals in the Los Angeles area who require reliable, standard-dimensioned washers for general-purpose fastening applications.
Finish Options
Our 5/16 Flat Washers are commonly stocked in a plain (oiled) finish or with a zinc plating (per ASTM B633) for enhanced corrosion resistance. Other finishes and materials, such as hot-dip galvanized or stainless steel, may be available upon request for bulk orders.
How to Measure
Specify flat washers by their nominal screw size. For a 5/16" flat washer, you are specifying the size of the bolt or screw it is intended to be used with. If you have specific outside diameter (OD) or thickness requirements (e.g., USS or SAE pattern), please provide those dimensions.
Example: "I need 5/16" Flat Washers, Zinc-Plated, in a quantity of 500."
Order Checklist
- Product name and required dimensions (e.g., 5/16")
- Grade/material specification and quantity
- Cutting instructions (if applicable)
- Surface finish requirements (e.g., Plain or Zinc-Plated)
- Certifications required (Mill Test Report - MTR)
- Special handling or delivery requirements
Quick Facts
- Product
- 5/16 Flat Washer
- Material
- Low Carbon Steel
- Standards
- ASTM F844
- Key Properties
- Distributes fastener load, prevents surface damage, general-purpose use.
- Primary Applications
- Construction, MRO, Fabrication, Equipment Assembly
- Location
- Los Angeles warehouse - Same-day pickup available
Available Sizes
We stock a wide range of industrial-grade flat washer sizes, from 1/4" up to 1-1/2" in diameter, available for same-day pickup from our Los Angeles warehouse. Bulk quantities are readily available for MRO and large-scale fabrication projects.
Custom sizes and cutting services are available.
Contact for Sizing