Description
The Cross Flat Head Screw, specifically designed to the JIS B 1111T standard, is a high-precision fastener engineered for applications requiring a low-profile finish and a broad bearing surface. Manufactured from premium 304 stainless steel, these stainless steel screws provide exceptional reliability in both structural and mechanical assemblies where a clean, professional aesthetic is paramount.
Compliant with Japanese Industrial Standards (JIS B 1111 Type T), this Cross Recessed Machine Screw—often referred to as a Truss Head or Large Flat Head screw—features a head that is wider and thinner than a standard round head. This design allows for a larger contact area, making it ideal for fastening thin materials or for use in electronics and machinery where space is limited, but a secure grip is necessary. It is widely used in electronics, machinery, equipment assembly, and general manufacturing where precision, corrosion resistance, and surface smoothness are essential.
Features & Benefits
- Premium 304 Stainless Steel: Strong, rust-resistant, and highly durable for long-term use.
- Excellent Corrosion Resistanc: Performs well in humid, outdoor, and oxidizing environments.
- Cross Recess Design: Standardized cross groove provides stable fastening and prevents cam-out.
- High Strength Threads: Deep and uniform threading ensures secure locking and even force distribution.
Specification
|
Specification |
M2 |
M2.5 |
M3 |
M3.5 |
M4 |
M4.5 |
M5 |
M6 |
M8 |
|
Pitch -P |
0.4 |
0.45 |
0.5 |
0.6 |
0.7 |
0.75 |
0.81 |
1 |
1.2 |
|
Thread diameter -d |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
6 |
8 |
|
Head diameter -dk |
4.5 |
5.7 |
6.5 |
8.1 |
8.8 |
10.6 |
11.1 |
13.2 |
17.8 |
|
Head thickness -k |
1.3 |
1.6 |
1.7 |
2.5 |
2.2 |
2.95 |
2.9 |
3.4 |
4.9 |
FAQ:
Q1: Is the "Large Flat Head" the same as a Countersunk head?
A: No. While it is called a "Flat Head" in some Japanese standards, the JIS B 1111T is a truss-style head that sits on top of the surface. It is used when you want a low-profile finish but do not want to drill a conical countersink hole.
Q2: What tools are required for installation?
A: These screws use a standard Phillips-head (Cross Recess) screwdriver or driver bit. Because they follow the JIS standard, the recess is designed for a precise fit with standard cross-drive tools.
Q3: Why choose the JIS B 1111T standard over other screw types?
A: The Type T standard provides a larger head diameter relative to the thread size. This is particularly beneficial for distributing the clamping force over a wider area, which prevents the head from pulling through softer or thinner materials.
Q4: What industries commonly use Cross Flat Head Screws?
A: They are widely used in electronics, machinery manufacturing, equipment assembly, and general industrial applications.
