Inches Counter Sunk UNC Screws

Counter Sunk Screws UNC Inches

Flat Head UNC Screws – The Comprehensive Range for Every Application

Flat head UNC screws are the first choice for flush and visually appealing connections in the American standard. With a special 82° countersunk angle (as opposed to 90° for metric screws), they can be fully recessed into the material, ensuring a perfectly flat surface without protruding heads. This is not only a crucial advantage for aesthetics and aerodynamics but also minimizes the risk of injury and protects against snagging in dynamic applications.

Our range covers all common surface finishes and materials:

  • Stainless Steel (Inox): Offers maximum corrosion resistance, ideal for outdoor use, marine environments, and the food industry.

  • Zinc-Plated Steel: The zinc plating provides reliable protection against corrosion and gives the screw a shiny, decorative surface.

  • Plain Steel (unfinished): For industrial applications where the surface will be further processed after assembly (e.g., painting).

We offer these high-quality flat head screws with a variety of drives:

  • Hex Socket: For high torque transmission and a classic, secure fit.

  • Torx: The Torx profile enables optimal power transmission and minimizes the risk of cam-out, which is particularly beneficial for high-torque applications.

  • Phillips: The universal standard for quick and easy assembly, widely used in industry and crafts.

  • Slotted: The classic drive for traditional applications and restorations.

The versatile applications of these screws make them an indispensable range:

  • Vehicles & Motorcycles: Specifically for US cars, vintage cars, and American motorcycles that are manufactured to inch standards.

  • Industry & Mechanical Engineering: Suitable for US machinery and equipment where UNC threads are standard.

  • Agricultural Machinery & Road Construction: Robust connections for heavy-duty outdoor use.

  • Trax & Archery: For special fixings on off-road vehicles, trailers, and precision sports equipment.

Benefit from the long-standing experience of equipe bachofner gmbH and our extensive stock. Visit our online shop at www.zoll-schrauben.ch and find the right flat head UNC screw for your project.

Show 1 to 20 (of in total 41 products)
Countersunk Screw 10-24UNC-7/8mm Stainless Steel

Countersunk Screw 10-24UNC-7/8mm Stainless Steel

Shipping time: ex Stock
CHF 1.85
CHF 1.85 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw 10-24UNC-3/4mm
Countersunk Screw 10-24UNC-3/4mm
Shipping time: ex Stock
CHF 1.65
CHF 1.65 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw 10-24UNC-5/8mm
Countersunk Screw 10-24UNC-5/8mm
Shipping time: in Stock at Week 27
CHF 1.40
CHF 1.40 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw 10-24UNC-1/2
Countersunk Screw 10-24UNC-1/2"
Shipping time: ex Stock
CHF 1.35
CHF 1.35 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 10-24 UNC 1, nickel-plated, Allen key

Countersunk Screw No. 10-24 UNC 1", nickel-plated, Allen key

Shipping time: orderable
CHF 1.80
CHF 1.80 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw 3/8- 16 UNC x 3/4, Inbus

Countersunk Screw 3/8"- 16 UNC x 3/4", Inbus

Shipping time: orderable
CHF 2.90
CHF 2.90 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw 6-32 UNC x 7/16 Torx

Countersunk Screw 6-32" UNC x 7/16" Torx, fits to Hoyt Cam, Elite Archery Cam

Shipping time: orderable
CHF 6.00
CHF 6.00 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw 8-32UNC x 7/16 Torx

Countersunk Screw 8-32UNC x 7/16" Torx, fits to Hoyt Cam, Elite Archery Cam

Shipping time: ex Stock
CHF 8.00
CHF 8.00 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 4-40 UNC 1/4, nickel-plated, Allen key

Flat Head Socket Cap Screw, No. 4-40 UNC x 1/4", Zinc Plated

Thread & Dimensional Data
Feature Specification
Thread Standard UNC (Unified Coarse) per ASME B1.1
Thread Size No. 4-40 UNC
Threads per Inch 40 TPI
Major Diameter (max.) 0.1120 in (2.84 mm)
Head Style 82° Flat Countersunk Head
Drive Type Hex Socket (Internal Hexagon / Inbus)
Hex Key Size 1/16 in (1.59 mm)
Nominal Length (under head) 1/4 in = 6.35 mm
Overall Length (incl. head) Approx. 0.310 in (7.87 mm) – varies with head diameter and countersink geometry

Material & Finishing
Feature Specification
Hardness 39 – 44 HRC
Surface Finish Zinc plated (galvanized), clear/blue trivalent passivation
Environmental Compliance RoHS compliant (Directive 2011/65/EU)

Standard Reference
ASME B18.3-2003 – Socket Cap, Shoulder, and Set Screws (Inch Series)

Application
For mounting / securing the leather finger tab on the Elite AAE Finger Tab archery equipment.

Availability
Available from: www.zoll-schrauben.ch

Shipping time: ex Stock
CHF 1.30
CHF 1.30 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 4-40 UNC 1/2, nickel-plated, Allen key

Countersunk Screw No. 4-40 UNC 1/2", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.60
CHF 1.60 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 4-40 UNC 3/4, nickel-plated, Allen key

Countersunk Screw No. 4-40 UNC 3/4", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.85
CHF 1.85 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 6-32 UNC 1/4, nickel-plated, Allen key

Countersunk Screw No. 6-32 UNC 1/4", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.10
CHF 1.10 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 6-32 UNC 3/8, nickel-plated, Allen key

Countersunk Screw No. 6-32 UNC 3/8", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.15
CHF 1.15 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 6-32 UNC 1/2, nickel-plated, Allen key

Countersunk Screw No. 6-32 UNC 1/2", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.65
CHF 1.65 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 6-32 UNC 3/4, nickel-plated, Allen key

Countersunk Screw No. 6-32 UNC 3/4", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.85
CHF 1.85 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 8-32 UNC 3/8, nickel-plated, Allen key

Countersunk Screw No. 8-32 UNC 3/8", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.85
CHF 1.85 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 8-32 UNC 1/2, nickel-plated, Allen key

Countersunk Screw No. 8-32 UNC 1/2", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.85
CHF 1.85 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 8-32 UNC 5/8, nickel-plated, Allen key

Countersunk Screw No. 8-32 UNC 5/8", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.90
CHF 1.90 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 8-32 UNC 3/8, nickel-plated, Allen key

Countersunk Screw No. 8-32 UNC 3/8", nickel-plated, Allen key

Shipping time: ex Stock
CHF 1.90
CHF 1.90 per
8.1 % VAT incl. excl. Shipping costs
Countersunk Screw No. 8-32 UNC 1, nickel-plated, Allen key

Countersunk Screw No. 8-32 UNC 1", nickel-plated, Allen key

Shipping time: ex Stock
CHF 2.15
CHF 2.15 per
8.1 % VAT incl. excl. Shipping costs
Show 1 to 20 (of in total 41 products)
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