customer-service Help
  1. Home
  2. /
  3. Fasteners
  4. /
  5. Screws & Bolts
  6. /
  7. Carriage Bolts
  8. /
  9. 1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12 Pack)
Shop All Carriage Bolts
Primeline Tools

1/4-20 Carriage Bolts and Nuts with Smooth, Domed Heads (12 Pack)

product price: $4.99
/pk 12, $0.42/ea
Free Shipping on orders over $50
after you 
Free 30-Day Returns

Key Features

Not Graded Material Grade/Class
  • Thread Size 1/4-20 x 1-7/8 in.
  • Fastener Length 1-7/8 in
  • Material 18-8 Stainless Steel
  • Finish Plain
  • Neck Type Square
See all product information
Get 10% Off Your First Order
Real Support From Real People Contact Our U.S.-Based teams
Free 30-Day Returns
Return Policy
Accepted Payment Options
visa mastercard american express discover paypal
Net 30

Product Information

Dimensions

Thread Size 1/4-20 x 1-7/8 in.
Fastener Length 1-7/8 in
Neck Height 9/64 in
Head Height 9/64 in
Minimum Thread Length 3/4 in
Minimum Head Height 1/8 in
Maximum Neck Width 17/64 in
Maximum Head Diameter 19/32 in
Dimensional Standards ASME B18.5
Minimum Neck Height 1/8 in
Minimum Neck Width 1/4 in
Head Width 37/64 in
Minimum Head Diameter 9/16 in
Neck Width 1/4 in
Maximum Head Height 9/64 in
Maximum Neck Height 5/32 in

Description

The carriage bolts and nuts in this set are constructed of steel, and each come in a zinc-plated finish. The threading on these fasteners is 1/4 inch-20 teeth per inch (TPI), and they measure 1/4 inch diameter x 1-7/8 inch length. The carriage bolts feature a square section beneath their smooth, domed heads to help prevent spinning during tightening of bolts. These nuts and bolts are packaged for use with garage door hardware, but are useful with many other applications.


  • •Compatible with most garage door hardware installations
  • •The threading on these fasteners is 1/4-20 TPI
  • •This set includes 12 carriage bolts and 12 nuts
  • •Steel constructed nuts and carriage bolts
  • •Zinc-plated nuts and bolts
  • •Smooth, domed heads
  • •These carriage bolts feature a square section beneath the head which helps prevent them from spinning during tightening of nuts

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.

Explore More Products