1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) 1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) (pack of 1)

Accu Product Code (APC): SEB-1/2-20-2.1/2-A4

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1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) 1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) (pack of 1)

Name: 1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4)
Brand: AccuScrews
SKU: SEB-1/2-20-2.1/2-A4
Availability: InStock
Rating: 5 (4 reviews)

Accu Product Code (APC): SEB-1/2-20-2.1/2-A4

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Accu Product Code (APC): SEB-1/2-20-2.1/2-A4
Thread Size: 1/2-20 UNF
Length (L): 2.1/2 Inch
Socket Size (J): 0.75 Inch Tolerance: +0/-0.025 Inch
Material: Stainless Steel - Marine (A4)
Finish: Natural
Head Length: 0.364 Inch Tolerance: +0/-0.062 Inch
Manufacturing Standard: ASME B18.2.1
Material Family: Stainless Steel
Pitch: 20 TPI
System of Measurement: Imperial
Thread Length (E): 1.5 Inch Tolerance: +0/-0.25 Inch
Weight per 100 Units: 7.46 kg

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1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) Description

The 1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) has the following features:

Natural Finish
Head Length: 0.364 Inch
Head Length Tolerance: +0/-0.062 Inch
Length (L): 2.1/2 Inch
Manufacturing Standard: ASME B18.2.1
Stainless Steel - Marine (A4)
Stainless Steel Material Family
Pitch: 20 TPI
Socket Size (J): 0.75 Inch
Socket Size (J) Tolerance: +0/-0.025 Inch
System of Measurement: Imperial
Thread Length (E): 1.5 Inch
Thread Length (E) Tolerance: +0/-0.25 Inch
Thread Size: 1/2-20 UNF

Discover more about the Imperial Plain Hexagon Bolts range.

Imperial Plain Hexagon Bolts are functionally identical to Accu's standard range of Hexagon Bolts. This type of bolt features unthreaded portion below the head, which serves as an unthreaded dowel to strengthen the overall construction of the bolt. The unthreaded section of a Plain Hexagon Bolt makes the bolt more resistant to shear forces.

Sizing

Plain Hexagon Bolts are available in imperial thread sizes of between 1/4 inch and 1 inch. Lengths range from 1 inch to 20 inch.

Thread-Locking and Finish Options.

Secure your Imperial Plain Hexagon Bolts against vibration-induced loosening with Accu’s pre-applied thread-locking solutions. From essential AccuLock Threadlocker to the rugged Anu-Lok 180 and high-performance Precote 80, we’ve got you covered. Elevate aesthetics with AccuBlack chemical blackening, reducing glare and adding a sleek, refined finish.

Shipping Information

Shipping Destinations:

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Weight (100 items):

7.458kg

Component History

Product First Available:

Sunday, June 28, 2015

Stock Last Updated:

12:47 AMThursday, June 4, 2026

Specification Last Updated:

Wednesday, June 3, 2026

Barcodes

APC (Accu Product Code):

SEB-1/2-20-2.1/2-A4

EAN13 (International Article No.):

5054328168718

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) 1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) (pack of 1)

1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) 1/2-20 UNF x 2.1/2 Inch Imperial Plain Hexagon Bolts (ASME B18.2.1) - Marine Stainless Steel (A4) (pack of 1)

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