Specification Brand : Aspen Fasteners BulletPoint1 : Machine bolts are most commonly used in construction applications. BulletPoint2 : Machine bolts tolerances are typically less precise than those of cap screws. BulletPoint3 : Unlike cap screws, does not have a washer face or a machined point. ExteriorFinish : Unfinished GradeRating : Low Carbon Steel ItemName : (250 pcs) 1/2"-13 X 1-1/4", Machine Bolts, Square Head, Steel ItemPackageDimensions_Height : 7 inches ItemPackageDimensions_Length : 9 inches ItemPackageDimensions_Width : 9 inches ItemPackageQuantity : 250 ItemTypeKeyword : square-head-bolts Manufacturer : Aspen Fasteners ManufacturerGrade : Low Carbon Steel Material : Alloy Steel ModelNumber : BO034-1213X114-000250 PartNumber : BO034-1213X114-000250 ProductDescription : Machine bolts are most commonly used in construction applications. Machine bolts tolerances are typically less precise than those of cap screws. Unlike cap screws, does not have a washer face or a machined point.DIMENSIONAL ATTRIBUTES Diameter (Nominal): 1/2" Thread Pitch: 13 Diameter (Dimension): 0.5" Length (Nominal): 1-1/4" Thread Length (Nominal): 1.25" Across Flats (Basic): 3/4" Head Height, Overall: 0.348"PRODUCT ATTRIBUTES Category: Machine Bolts System of Measurement: Inch Brand: Aspen Fasteners Head Style: Square Head Drive Style: External Square Drive Thread Direction: Right-Hand Thread Material: Steel Material Grade: Low Carbon Steel Coating: Uncoated Origin: Origin Undefined Standards and Specifications: ASME B18.2.1 ProductSiteLaunchDate : 2019-07-29T10:57:22.593Z Size : 1/2"-13 X 1-1/4" UnitCount : 250 UnspscCode : 31161500