1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) 1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): SEC-1/4-20-6.1/2-A2-BL

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1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) 1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): SEC-1/4-20-6.1/2-A2-BL

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Accu Product Code (APC): SEC-1/4-20-6.1/2-A2-BL
Thread Size: 1/4-20 UNC
Length (L): 6.1/2 inch
Head Diameter (D): 0.594 inch
Material: Stainless Steel - (A2)
Finish: Matte Black
Head Length (H): 0.156 inch
Manufacturing Standard: ANSI B18.5
Material Family: Stainless Steel
Square Length (P): 0.156 inch
Square Width A/F (Max) (B): 0.26 inch
System of Measurement: Imperial
Thread Length (Min) (E): 1.688 inch
Thread Pitch: 20 TPI
Weight per 100 Units: 3.3 kg

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1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) Description

The 1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) has the following features:

Matte Black Finish
Head Diameter (D): 0.594 inch
Head Length (H): 0.156 inch
Length (L): 6.1/2 inch
Manufacturing Standard: ANSI B18.5
Stainless Steel - (A2)
Stainless Steel Material Family
Square Length (P): 0.156 inch
Square Width A/F (Max) (B): 0.26 inch
System of Measurement: Imperial
Thread Length (Min) (E): 1.688 inch
Thread Pitch: 20 TPI
Thread Size: 1/4-20 UNC

Discover more about the Imperial Carriage Bolts range.

Imperial Carriage Bolts feature a domed head with a square section directly underside, which can help prevent self loosening. When used to fasten within a square hole, Carriage Bolts offer a self-locking fastening solution.

These Bolts are manufactured in accordance with ANSI B18.5 and feature a minimum thread length, however Fully Thread Imperial Carriage Bolts are also available.

Imperial Carriage Bolts are available in diameters ranging from ¼” up to ¾”, with Lengths between 4.½ Inches and 18 Inches.

Materials

Manufactured in A2 Stainless Steel as standard and avalible in a wide range of materials to suit your project requirements.

Upgrade your Imperial Carriage Bolts with pre-applied thread-locking. Secure with AccuLock Threadlocker, reinforce with Anu-Lok 180, or go high-performance with Precote 80. For a premium touch, AccuBlack chemical blackening minimises reflections and delivers a sleek, professional finish.

Carriage Bolts And Coach Bolts

Though the terms are often used interchangeably, the differences between Carriage Bolts and Coach Bolts are discussed in our article what's the difference between carriage and coach bolts.

Metric Carriage Bolts

For metric sizes, please see our range of Metric Carriage Bolts.

Shipping Information

Shipping Destinations:

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Weight (100 items):

3.304kg

Component History

Product First Available:

Sunday, June 28, 2015

Stock Last Updated:

08:07 PMThursday, June 4, 2026

Specification Last Updated:

Thursday, June 4, 2026

Barcodes

APC (Accu Product Code):

SEC-1/4-20-6.1/2-A2-BL

EAN13 (International Article No.):

5057196631384

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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Head Length (H)

Manufacturing Standard

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Square Width A/F (Max) (B)

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1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) 1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) (pack of 1)

1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) 1/4-20 UNC x 6.1/2 Inch Imperial Carriage Bolts (ANSI B18.5) - Black Stainless Steel (A2) (pack of 1)

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