Wood Screws

Example of a wood screw

Our featured product for this month is the wood screw – an economical and commonly available screw used to join two pieces of wood together or thin non-wood products to wood (eg hardware, hinges etc).

Thread and Point:

Specialized thread profile with sharp, coarse, and widely spaced threads designed to minimize the effort needed to drive the screw into wood while maximizing the withdrawal load.

Wood screws have a gimlet point – a threaded, sharp cone point ideally suited for easy penetration into wood.  For very hard woods, specialized points are available, like the type 17 point, which improves displacement of the material into which it is being driven, consequently reducing the force needed to insert the screw.

Example of a wood screw with type 17 point

Type 17 point

Head Types:

Most common head types are: flat, oval and round, flat heads being the most frequently used because the head remains flush with the surface once inserted into the material. When countersunk, flat head screws can be easily hidden using  plugs. For more decorative finishes, oval and round heads are preferred (see Table 1 for head dimensions).

Table 1. Wood Screw Head Dimensions

Nominal Screw Dia. TPI Basic Screw Diameters Average Head Diameters
Flat & Oval Head Dia. Round Head Dia.
Decimal Fraction Decimal Fraction Decimal Fraction
#0 32 0.060 1/16 0.109 7/64 0.106 7/64
#1 28 0.073 5/64 0.135 9/64 0.130 1/8
#2 26 0.086 3/32 0.160 5/32 0.154 5/32
#3 24 0.099 3/32 0.185 3/16 0.178 11/64
#4 22 0.112 7/64 0.210 13/64 0.202 13/64
#5 20 0.125 1/8 0.236 15/64 0.227 7/32
#6 18 0.138 9/64 0.262 17/64 0.250 1/4
#7 16 0.151 5/32 0.287 9/32 0.275 9/32
#8 15 0.164 5/32 0.312 5/16 0.298 19/64
#9 14 0.177 11/64 0.337 11/32 0.323 21/64
#10 13 0.190 3/16 0.363 23/64 0.347 11/32
#12 11 0.216 7/32 0.414 13/32 0.395 25/64
#14 10 0.242 15/64 0.480 31/64 0.443 7/16
#16 9 0.268 17/64 0.515 33/64 0.491 31/64
#18 8 0.294 19/64 0.602 19/32 0.539 17/32
#20 8 0.320 5/16 0.616 39/64 0.587 19/32
#24 7 0.372 3/8 0.724 23/32 0.683 11/16
NOTES:
1. All dimensions are in inches, unless otherwise noted.
2. For reference only

 

Main features of Wood Screws:

  • Designed for use in wood.
  • Variety of head styles, drives and materials to suite specific applications .
  • Gimlet point for more effective screw penetration.
  • Thread profile improves grip, reduces stripping and pull-out.
  • Easily removed to conveniently disassemble joined components.
  • Improved finished appearance.

Types:

Aspen Fasteners stocks a full line of steel as well as 18-8 stainless steel wood screws available for same day shipping from our distribution centers across the USA. And remember, it’s always free shipping.

Flat Head Wood Screws:

Flat Head Phillips Drive
Flat Head Phillips Drive
Material: Steel, Stainless Steel
Plating: Zinc, Black Oxide
Flat Head Phillips Drive
Flat Head Slots Drive
Material: Steel
Plating: Zinc
Flat Head Phillips Drive
Flat Head Square Socket Drive
Material: Steel
Plating: Zinc

Oval Head Wood Screws:

Flat Head Phillips Drive
Oval Head Phillips Drive
Material: Steel, Stainless Steel
Plating: Zinc, Black Oxide
Flat Head Phillips Drive
Oval Head Slots Drive
Material: Steel
Plating: Zinc

Round Head Wood Screws:

Flat Head Phillips Drive
Round Head Phillips Drive
Material: Steel, Stainless Steel
Plating: Zinc, Black Oxide
Flat Head Phillips Drive
Round Head Slots Drive
Material: Steel
Plating: Zinc

For more information about wood screws including thread types, drive styles, pilot hole sizes click  here.

Call us, email us or chat-on-line with any question you might have:

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