7/8"-9 x 4 1/2" (FT) Coarse Thread Square Head Set Screw Cup Point Low Carbon Steel Case Hardened Plain Finish

PRODUCT SPECIFICATIONS (Part # 0000-129644)
Fastener Type:	Square Head Set Screw Cup Point
Size Description:	7/8"-9 x 4 1/2" (FT)
Diameter/Nominal Size:	7/8"
Length:	4 1/2"
Wrench Size/Across Flats:	0.852-0.875"
Head Height:	0.635-0.678"
Point Diameter:	0.502-0.530"
Thread Pitch:	9
Thread Pitch Type:	Coarse
Thread Direction:	Right
Thread Coverage:	Full
System of Measurement:	Inch
Grade:	2
Material:	Low Carbon Steel Case Hardened
Finish:	Plain Finish (No Plating)
Head Type:	Square
Drive Type:	External Square
Point Type:	Cup
Average Piece Weight:	0.7546300 lbs.

Square Head Set Screws: Tip pressure prevents objects from moving relative to one another in assemblies where one object is housed inside another. The square head enables wrench tightening and also an easier wrench grip for nut tightening. Used in new construction to mimic an older aesthetic or in railway applications. Set screws come in a variety of different points, cup point being the most common.