DIMENSIONAL ATTRIBUTES | Diameter (Nominal): 1/4" | Thread Pitch: 20 | Length (Nominal): 3/8" | PRODUCT ATTRIBUTES | Category: Thread Cutting Screws | System of Measurement: Inch | Brand: Aspen Fasteners | Head Style: Flat Countersunk Undercut Head | Head Style Detail: 82 Degree Countersink | Drive Style: Cruciform Recess Drive | Drive Detail: Phillips Type H | Thread Length: Full Thread | Thread Direction: Right-Hand Thread | Point: Type "F" | Material: Steel | Material Processes: Case Hardened | Coating: Zinc Plated | Coating Color: Clear | Hardness Rating: Rockwell C45 min. / Core=C28-C38 | Origin: Origin Undefined | Standards and Specifications: ASME B18.6.3 and SAE J933 | NB: Product images are copyrighted artistic representations which may not reflect the product's exact appearance, proportions and/or relative dimensions.