Kohler 3.5EFOZ Head Styles, Drive Styles, Nut Styles, Washer Styles, American Standard, Metric

Appendix D Common Hardware Identification

Screw/Bolts/Studs

Head Styles

Hex Head or Machine Head

Hex Head or Machine Head with Washer

Flat Head (FHM)

Round Head (RHM)

Pan Head

Hex Socket Head Cap or Allent Head Cap

Hex Socket Head or Allent Head Shoulder Bolt

Sheet Metal Screw

Stud

Drive Styles

Hex

Hex and Slotted

Phillipsr

Slotted

Hex Socket

Nuts

Nut Styles

Hex Head

Lock or Elastic

Square

Cap or Acorn

Wing

Washers

Washer Styles

Plain

Split Lock or Spring

Spring or Wave

External Tooth Lock

Internal Tooth Lock

Internal-External Tooth Lock

Hardness Grades

American Standard

Grade 2

Grade 5

Grade 8

Grade 8/9 (Hex Socket

Head)

Metric

Number stamped on	5.8
hardware; 5.8 shown

Allent head screw is a trademark of Holo-Krome Co.

Phillipsr screw is a registered trademark of Phillips Screw Company.

Sample Dimensions

American Standard (Screws, Bolts, Studs, and Nuts)			Plain Washers
	1/4-20 x 1		9/32 x 5/8 x 1/16
		Length In Inches (Screws and Bolts)		Thickness
		Threads Per Inch
				External Dimension
		Major Thread Diameter In Fractional Inches Or Screw Number Size		Internal Dimension
Metric (Screws, Bolts, Studs, and Nuts)			Lock Washers
M8-1.25 x 20
		Length In Millimeters (Screws and Bolts)	5/8
		Distance Between Threads In Millimeters		Internal Dimension
		Major Thread Diameter In Millimeters

TP-6138 5/02 Appendix A-5