Fastener Head Styles
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Fastener Head Styles

There are many different head styles available, the names of which are used in the HEAD field. The table below shows the available head types. The tables that follow show drive and point options available for certain head types.

Head Name

Description

SQR

Square Head (Cube)

HEX

Hex Bolt Head (Hexagon)

HEXFIN

Hex Screw Head (Hexagon with Washer Face)

HEXFLNG

Hex Flange (Hexagon with Flange)

HEXSLT

Slotted Hex

HEXWSHL

Slotted Hex Washer

RND

Round Head (Partial Sphere)

RNDSLT

Slotted Round Head

RNDSQR

Round Head, Square Neck (Partial Sphere with Square Cube)

FLAT

Countersunk Flat Head, no slot

FLATSLT

Slotted Countersunk Flat Head

OVALSLT

Slotted Oval Head (Combo Flat Csk and Round)

OVALCRS

Cross Recessed Oval Head (Phillips Head)

FLSTRSLT

Slotted Fillister Head

FLSTRCRS

Cross Recessed Fillister Head

PANSLT

Slotted Pan Head

PANCRS

Cross Recessed Pan Head

TRUSSSLT

Slotted Truss Head

TRUSSCRS

Cross Recessed Truss Head

BINDSLT

Slotted Binding Head

BINDCRS

Cross Recessed Binding Head

BTN*

Button Head (Socket)

FLAT*

Socket Head Flat Countersunk

CAP*

Socket Head (Socket Head Cap Screw)

SHLDR*

Socket Head Shoulder Screw

SET*

Socket Set Screw

NTHSLT

Slotted Hex Nut

NTHWSLT

Slotted Hex Washer Faced Nut

NTWHEX

Washer Faced Hex

NTSMS

Machine Screw Square Nut

WLKHELI

Helical Spring Lock Washer

WASHCLIP

Clipped Plain Washer

WASHPLN

Plain Washer

PIN

Pin Head (Chamfered Cylinder)

CROWN

Crown Head for Dowel Pin

NONE

Used if no head is needed

FLATCRS

Cross Recessed CSK Flat Head

NTSC

Self Clinching Nut

Head TypesTable *Add Letter for Drive option (if desired).† Add Letter for Point option (if desired).

 

Drive Letter

Description

C

Cross Recess (Phillips)

H

Hex

S

Six (6) Tooth Spline

T

Torx

Drives Table  (Used as Suffix on end of Head name; Socket Screws only)

 

Point Letter

Description

D

Dowel Point (Rounded Corners)

O

Oval Point (Partial Sphere)

P

Cup Point (Cone minus cone)

C

Cone Point

F

Flat Point (Chamfered Cylinder)

G

Dog Point (Cone and Cylinder)

 Points Table (Used as Suffix on end of Head name; Socket Set Screws and Pins only)

 

Shaft

Description

AB

Spaced Shaft w/ Type AB Tapping Screw Point

B

Spaced Shaft w/ Type B Tapping Screw Point

BP

Spaced Shaft w/ Type BP Tapping Screw Point

BF

Spaced Shaft w/ Type BF Tapping Screw Point

D

Normal Shaft w/ Type D Tapping Screw Point

 Tapping Screw Shaft Types Table (Shows the shaft types available for tapping screws only.)