Hillman 1/2-13 in. Diameter x 3-1/2 in. Length Steel Hex Head Cap Screw, 25-Pack
SKU: 37201022738

Hillman 1/2-13 in. Diameter x 3-1/2 in. Length Steel Hex Head Cap Screw, 25-Pack

Sale price$78.29 Regular price$86.99
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Description

Hillman 1/2-13 in. Diameter x 3-1/2 in. Length Steel Hex Head Cap Screw, 25-PackHillman 1 2 13 x 3 1 2 in. Steel Hex Head Cap Screws (25 Pack) Durable steel hex head cap screws for heavy duty fastening in wood, metal, and machinery. Coarse 1 2 13 threads and a washer face head deliver strong clamping force and reliable torque in demanding applications. Key Features: Heavy Duty Strength: Steel construction with hex cap head for high torque fastening Reliable Grip: Coarse 1 2 13 machine threads for secure holds in tapped holes or

Hillman 1/2-13 x 3-1/2 in. Steel Hex Head Cap Screws (25-Pack)

Durable steel hex head cap screws for heavy-duty fastening in wood, metal, and machinery. Coarse 1/2-13 threads and a washer-face head deliver strong clamping force and reliable torque in demanding applications.


Key Features:

  • Heavy-Duty Strength: Steel construction with hex cap head for high torque fastening
  • Reliable Grip: Coarse 1/2-13 machine threads for secure holds in tapped holes or with nuts
  • Washer-Face Head: Integrated bearing surface under head helps improve seal and load distribution
  • Partially Threaded Shank: USS pattern supports alignment and shear strength in assemblies
  • Contractor Value: 25-piece boxed pack for shop, jobsite, or maintenance stock

Specifications Table:

Specification Details
Brand Hillman
Diameter / Thread 1/2-13 UNC (coarse)
Length 3-1/2 in
Material Steel
Head Style Hex cap with washer face
Thread Coverage Partially threaded (USS)
Pieces per Pack 25
Packaging Type Boxed
Category Hex Bolts / Hex Head Cap Screws
Package Dimensions (L x W x H) 4.3 in x 4.3 in x 3.5 in
Package Weight 7 lb
Thread Type Coarse
Unit of Measurement Imperial

Frequently Asked Questions (FAQ):

Q: What tools are needed for installation?
A: Tighten with a wrench or compatible socket/driver sized for 1/2-13 hex cap screws.


Q: Are these fully threaded?
A: No. They follow a USS pattern and are partially threaded along the shank.


Q: What is the thread specification?
A: Coarse 1/2-13 UNC machine threads.


Q: Can these be used outdoors?
A: They are steel; corrosion resistance depends on environment. If frequent moisture is expected, consider stainless or coated fasteners.


Q: How many are included?
A: 25 screws per retail package.


Industrial Poise, Engineered Presence

A hex cap screw is the quiet hero—clean geometry, confident hardware that grounds cabinetry and custom metalwork with intention. The washer-faced head reads crisp and purposeful, adding a subtle, architectural glint. Pair it with darkened steel brackets or blonde oak to strike a tailored contrast. This is utility elevated—foundational to a refined, hardworking space.


Equip your next build with these high‑torque Hillman hex cap screws and lock in dependable, professional-grade fastening.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37201022738

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G.C.B.
San Leandro, US
★★★★★ 4
A worthwhile addition to just butyl itself.
Model: 197mil 31 sqft Car Sound Deadening Mat
I used this as a topper to butyl sound deadening material on the floor and side panels and am very pleased. It was generally easy to use. It is very sticky and cannot be easily repositioned as the foam will separate from the sticky side if you try, but its not a big deal. I have yet to run the car but the panels are much quieter when tapped on vs just the butyl alone, and this stuff weighs almost nothing.
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Reviewed in the United States on February 17, 2026
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Bret Jackson
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★★★★★ 5
Good deadening
Model: 197mil 31 sqft Car Sound Deadening Mat
This sound deadening works well and has good adhesion .
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Reviewed in the United States on May 18, 2026
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Mags
Cuba, US
★★★★★ 5
Easy to install and great value.
Model: 197mil 31 sqft Car Sound Deadening Mat
Very easy to cut and install with the rollers I bought separately. It adheres well even though I was installing it when the weather was closer to 40-50 degrees. Definitely helps to deaden the sound from the bare sheet metal.
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Reviewed in the United States on April 2, 2026
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Chuck P
Phoenix, US
★★★★★ 1
Garbage
Model: 197mil 31 sqft Car Sound Deadening Mat
Straight garbage, I tried to cut corners on cost of building an spl car and should have stuck with dynamat or something like that. This is NOT for sound deadening…… Garbage product!!!
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Reviewed in the United States on June 5, 2026
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Shopper
Lake Worth, US
★★★★★ 3
Not for me
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Seemed “cheap” for my personal needs, so I returned it.
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Reviewed in the United States on March 23, 2026

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