Sealing Pan Head Screws
with Buna-N Rubber O-Ring, 4-40 Thread Size, 3/8" Long
Thread | |
Size | 4-40 |
Direction | Right Hand |
Spacing | Coarse |
Type | UNC |
Fit | Unified Standard Class 2A |
Tip Type | Flat |
Fastener Head Type | Rounded |
Head | |
Style | Pan |
Profile | Standard |
Height | 0.08" |
Diameter | 0.238" |
Drive | |
Style | Phillips |
Size | No. 1 |
Material | 18-8 Stainless Steel |
O-Ring | |
Material | Buna-N |
Temperature Range | -40° F to 225° F |
Length | 3/8" |
Threading | Fully Threaded |
Tensile Strength | 70,000 psi |
For Maximum Hole Diameter | 0.127" |
Maximum Pressure | 1,500 psi |
Application | Sealing |
Hardness | Not Rated |
Passivation | Passivated |
Performance | Corrosion Resistant |
Screw Size Decimal Equivalent | 0.112" |
System of Measurement | Inch |
Country of Origin | United States |
DFARS Compliance | Specialty Metals Compliant (252.225-7009) |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (01/21/2025, 247 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731815.9000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Keep out dust and contaminants while locking in air and fluid. These pan head screws have a rubber O-ring under the head that compresses to form a tight seal as you tighten them. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. The Phillips drive aligns easily with drivers and withstands more torque than slotted drives, but drivers slip when you apply too much force.
These screws are reusable as long as the rubber O-ring is intact and undamaged. Length is measured from under the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.
Buna-N O-Ring—These seals won't swell or soften when they touch oil, grease, or fuel.
The information in this 3-D model is provided for reference only.