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5/16-18 UNC x 3.1/2 inch Imperial Plain Hexagon Bolts (ANSI B18.2.1) - Black A2 Stainless Steel
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5/16-18 UNC x 3.1/2 inch Imperial Plain Hexagon Bolts (ANSI B18.2.1) - Black A2 Stainless Steel

SEB-5/16-18-3.1/2-A2-BL

. Order within 14 hours, 33 minutes. Details. Find out when you will get it.
Deliverd To Get it by
Australia Friday, May 12, 2017
Belgium Thursday, May 11, 2017
Canada Friday, May 12, 2017
Europe (EU) Thursday, May 11, 2017
India Friday, May 12, 2017
Ireland Thursday, May 11, 2017
Mexico Friday, May 12, 2017
Rest of World Friday, May 12, 2017
United Kingdom Wednesday, May 10, 2017
United States Thursday, May 11, 2017
United Kingdom (Saturday) Saturday, May 13, 2017

Available In Other Materials & Finishes


Key Features


Not available online. Talk to our engineers.
Eligible for 30 day returns. Details.

£1.48 / each.
Buy more & save
40 units£1.04 each30% Discount
100 units£0.80 each46% Discount
200 units£0.68 each54% Discount
Manufactured to your order. Allow 11 working days to dispatch.
Buy online and we'll manufacture your components within 11 working days.
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5/16-18 UNC x 3.1/2 inch Imperial Plain Hexagon Bolts (ANSI B18.2.1) - Black A2 Stainless Steel Technical Specification

5/16-18 UNC x 3.1/2 inch Imperial Plain Hexagon Bolts (ANSI B18.2.1) - Black A2 Stainless Steel Drawing
FinishChemical Matt Black
General Tolerance+/-0.13mm
Hexagon Length (K)0.211 inch
Hexagon Width A/F (H)0.5 inch
Length (L)3.1/2 inch
Manufacturing StandardANSI B18.2.1
MaterialA2 Stainless Steel - Black
Metric or Imperial?Imperial
Pitch18 TPI
Screw Material SpecificationA2-70 Stainless Steel
Thread Length [Min] (B)0.875 inch
Thread Size (T)5/16-18

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5/16-18 UNC x 3.1/2 inch Imperial Plain Hexagon Bolts (ANSI B18.2.1) - Black A2 Stainless Steel Description

The 5/16-18 UNC x 3.1/2 inch Imperial Plain Hexagon Bolts (ANSI B18.2.1) - Black A2 Stainless Steel has the following features:

  • 5/16-18 Thread Size (T)
  • ANSI B18.2.1 Manufacturing Standard
  • 3.1/2 inch Length (L)
  • A2 Stainless Steel - Black Material
  • 18 TPI Pitch
  • A2-70 Stainless Steel Screw Material Specification
  • 0.5 inch Hexagon Width A/F (H)
  • 0.211 inch Hexagon Length (K)
  • Chemical Matt Black Finish
  • +/-0.13mm General Tolerance
  • Imperial Metric or Imperial?
  • 0.875 inch Thread Length [Min] (B)

Other Key Information

Shipping Destinations:Worldwide.
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Weight: 36.60kg.
Product First Available:Sunday, June 28, 2015
Stock Last Updated:01:26 AM
Monday, April 24, 2017
Specification Last Updated:Wednesday, March 1, 2017
APC (Accu Product Code):SEB-5/16-18-3.1/2-A2-BL
EAN13 (International Article No.):5054328990784
ASIN (Amazon Stock Identification No.):ASIN not defined.

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Product Certifications

Signed Certificate of Conformity
Signed Certificate of Conformity
RoHS Compliant
RoHS Compliant
REACH Compliant
REACH Compliant


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