Technical Usage
Black Iron Ordinary Flat Washers are essential in applications where load distribution and surface protection are critical. They are commonly used to prevent damage to the surface materials when fastening bolts or screws, as well as to distribute the load more evenly. These washers help to maintain the integrity of a joint, especially in heavy-duty applications, by improving the clamping force. Their use extends across industries such as automotive, machinery, construction, and general manufacturing, where secure fastening is required.
Technical Specifications
format:
| Specification | Details |
|---|---|
| Coating | Black Iron |
| Type | Ordinary Flat Washer |
| Diameter | 1/4″ (6mm) to 2-1/2″ (64mm) |
| Thickness | 1.1mm to 7.8 (varies with size) |
Types of Item
- Flat Washer: Used for load distribution under a bolt or nut.
- Thick Washer: Provides more support under a fastener for heavier applications.
- Small Diameter Washer: Ideal for precision or smaller fasteners.
History
The flat washer, including the Black Iron Ordinary Flat Washer, has been in use since the industrial revolution, evolving from simple metal washers to more sophisticated designs. Black iron washers were among the earliest versions due to their availability and ease of manufacturing. Over time, advancements in material science and manufacturing methods have led to the introduction of more specialized washers. However, black iron washers remain popular in general use due to their reliability and affordability.
Black Iron Flat Washer (BT)
| Code | Description | Diameter | Actual Dimensions | Price |
|---|---|---|---|---|
| # | BI Flat Washer | 1/4"(6mm) x 3/4"(19mm) | ID: 7mm x OD: 20mm x 1.1mm THK | ₱0.60 |
| # | BI Flat Washer | 1/4"(6mm) x 1"(25mm) | ID: 7mm x OD: 25.4mm x 1.0mm THK | ₱1.20 |
| # | BI Flat Washer | 5/16"(8mm) x 3/4"(19mm) | ID: 8.5mm x OD: 19.5mm x 1.1mm THK | ₱0.70 |
| # | BI Flat Washer | 5/16"(8mm) x 1"(25.4mm) | ID: 8.5mm x OD: 25.4mm x 1.3mm THK | ₱1.20 |
| # | BI Flat Washer | 3/8"(10mm) x 3/4"(19mm) | ID: 10.25mm x OD: 20.5mm x 1.3mm THK | ₱0.74 |
| # | BI Flat Washer | 3/8"(10mm) x 7/8"(22mm) | ID: 10.25mm x OD: 27.8mm x 1.2mm THK | ₱1.34 |
| # | BI Flat Washer | 7/16"(11mm) x 1-1/8"(28mm) | ID: 12.3mm x OD: 28.1mm x 2.3mm THK | ₱1.70 |
| # | BI Flat Washer | 1/2"(12mm) x 1"(25m) | ID: 13.5mm x OD: 25.4mm x 2.7mm THK | ₱1.96 |
| # | BI Flat Washer | 1/2"(12mm) x 1-1/2"(38mm) | ID: 13.5mm x OD: 37.1mm x 2.7mm THK | ₱3.86 |
| # | BI Flat Washer | 9/16"(14mm) x 1-1/4"(32mm) | ID: 15mm x OD: 30mm x 2.5mm THK | ₱3.11 |
| # | BI Flat Washer | 9/16"(14mm) x 1-1/2"(38mm) | ID: 15mm x OD: 37.3mm x 2.7mm THK | ₱4.17 |
| # | BI Flat Washer | 5/8"(16mm) x 1-1/4"(32mm) | ID: 16.5mm x OD: 32.3mm x 2.7mm THK | ₱2.86 |
| # | BI Flat Washer | 5/8"(16mm) x 1-3/4"(45mm) | ID: 16.5mm x OD: 43.5mm x 2.7mm THK | ₱5.04 |
| # | BI Flat Washer | 3/4"(19mm) x 1-1/2"(38mm) | ID: 20.15mm x OD: 38.3mm x 3mm THK | ₱5.21 |
| # | BI Flat Washer | 3/4"(19mm) x 1-3/4"(45mm) | ID: 20.15mm x OD: 43.8mm x 3mm THK | ₱5.29 |
| # | BI Flat Washer | 7/8"(22mm) x 1-3/4"(45mm) | ID: 22.7mm x OD: 43.6mm x 3mm THK | ₱9.71 |
| # | BI Flat Washer | 7/8"(22mm) x 2-1/4"(57mm) | ID: 22.7mm x OD: 57.5mm x 3mm THK | ₱11.16 |
| # | BI Flat Washer | 1"(25mm) x 2-3/8"(60mm) | ID: 27.3mm x OD: 61.2mm x 2.9mm THK | ₱13.91 |
| # | BI Flat Washer | 1-1/8"(22mm) x 2-3/4"(70mm) | ID: 30mm x OD: 70mm x 3.1mm THK | ₱21.17 |
| # | BI Flat Washer | 1-1/4"(32mm) x 3"(75mm) | ID: 32.7mm x OD: 78mm x 3.0mm THK | ₱26.63 |
| # | BI Flat Washer | 1-3/8"(35mm) x 3-1/4"(82mm) | ID: 38mm x OD: 85mm x 3.3mm THK | ₱36.62 |
| # | BI Flat Washer | 1-1/2"(38mm) x 3-1/2"(89mm) | ID: 40mm x OD: 90mm x 3.3mm THK | ₱36.79 |
| # | BI Flat Washer | 1-5/8"(42mm) x 3-1/2"(89mm) | ID: 42mm x OD: 90mm x 3.1mm THK | ₱38.81 |
| # | BI Flat Washer | 1-3/4"(45mm) x 3-1/2"(89mm) | ID: 46mm x OD: 90mm x 3.3mm THK | ₱38.64 |
| # | BI Flat Washer | 2"(50mm) x 3-1/2"(89mm) | ID: 51mm x OD: 90mm x 3.3mm THK | ₱40.32 |
| # | BI Flat Washer | 2-1/4"(57mm) x 3-1/2"(89mm) | ID: 58mm x OD: 90mm x 3.3mm THK | ₱42.00 |
| # | BI Flat Washer | 2-1/2"(64mm) x 4-1/2"(114mm) | ID: 66mm x OD: 110mm x 7.8mm THK | ₱126.00 |
