Wood Screws

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.Â 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.

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 usingÂ 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
		Basic Screw 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
Material: Steel, Stainless Steel
Plating: Zinc, Black Oxide
: Flat Head Slots Drive
Material: Steel
Plating: Zinc
: Flat Head Square Socket Drive
Material: Steel
Plating: Zinc