ASME B18.2.1 · Grade 8
G8 YZ Hex Bolt UNC 1/4,3/8,1/2,5/8 C/S Half Thd ASME B18.2.1 Heavy Duty Yellow Zinc Carbon Steel ASME B18.2.1 1-1/2-6unc
- Material
- Carbon Steel
- Thread series
- UNC
- Finish
- Yellow Zinc
Hex Bolts
Hex head bolts to ASME B18.2.1 in UNC and UNF threads, from #4 up to 1-1/2 in. The range covers Grade 5 and Grade 8 steel (10B21, 35CrMo), 304 and 316 stainless in A2-70 / A4-80, and titanium Grades 2–5, with plain, zinc plated, yellow zinc, black oxide, black zinc and hot-dip galvanized finishes. Structural, machinery and automotive specifications including ASTM A325 and A193 are supported — send your standard, size and quantity for a quote.
ASME B18.2.1 · Grade 8
G8 YZ Hex Bolt UNF 1/4,3/8,1/2,5/8 C/S Half Thd ASME B18.2.1 Heavy Duty Yellow Zinc Carbon Steel ASME B18.2.1 1-1/2-6 Unf
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Yellow Zinc
ASME B18.2.1 · Grade 8
Grade8 YelZn Hex Bolt C.Steel Half Thread ASME B18.2.1 Industrial Asme 18.2.1 UNC
- Material
- Carbon Steel
- Thread series
- UNC
- Finish
- Yellow Zinc
ASME B18.2.1 · Grade 8
Grade8 YelZn Hex Bolt UNF C.Steel Half Thread ASME B18.2.1 Industrial Asme 18.2.1 UNF
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Yellow Zinc
ASME B18.2.1 · Grade 8
G8 YelZn Hex Bolt UNC B7 C/Steel HalfThd ASME Heavy amse 18.2.1
- Material
- Carbon Steel
- Thread series
- UNC
- Finish
- Yellow Zinc
ASME B18.2.1 · Grade 8
Yellow Zinc G8 Hex Bolt UNC C.Steel 1/2Thd ASME Carbon Steel ASME B18.2.1
- Material
- Carbon Steel
- Thread series
- UNC
- Finish
- Yellow Zinc
ASME B18.2.1 · Grade 8
Black Oxide Hex Head Bolt UNC Grade 8 Carbon Steel ASME B18.2.1
- Material
- Carbon Steel
- Thread series
- UNC
- Finish
- Black Oxide
Grade 5
UNF Hex Head Bolt Grade 5 Zinc Plated Carbon Steel Large Diameter Fine Thread Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
Grade 5 Carbon Steel Hex Head Bolt UNF Zinc Plated for High Vibration Applications
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
UNF Hex Head Bolt Grade 5 Zinc Plated Carbon Steel High Strength Fine Thread Hexagon Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
UNF Hexagon Head Bolt Grade 5 Zinc Plated Carbon Steel Heavy Duty Fine Thread Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
UNC Hexagon Head Bolt Grade 5 Zinc Plated Carbon Steel Fine Thread Hex Bolt for Machinery
- Material
- Carbon Steel
- Thread series
- UNC
- Finish
- Zinc Plated
Grade 5
Zinc Plated Carbon Steel Hexagon Head Bolt UNF Grade 5 Fine Thread Hex Bolt Bulk
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
UNF Hex Head Bolt Grade 5 Zinc Plated Carbon Steel Fine Thread Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
Clear Zinc Plated Hex Bolt UNF Grade 5 Carbon Steel Hexagon Head Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Grade 5
Bright Zinc Plated Hexagon Head Bolt UNF Grade 5 Carbon Steel Fine Thread Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
UNF Hex Head Bolt Grade 5 Zinc Plated Carbon Steel ASME B18.2.1 Coarse-Fine Thread Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
Zinc Plated Carbon Steel Hexagon Head Bolt UNF Grade 5 ASME B18.2.1
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
UNF Hex Head Bolt Grade 5 Zinc Plated Carbon Steel ASME B18.2.1 Precision Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
Precision UNF Hexagon Head Bolt Grade 5 Carbon Steel Zinc Plated ASME B18.2.1
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
High Strength Grade 5 UNF Hex Bolt Zinc Plated Carbon Steel Meet ASME B18.2.1 Standard
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
Carbon Steel Grade 5 Hex Bolt UNF Zinc Plated ASME B18.2.1 Hexagon Head Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
ASME B18.2.1 Grade 5 Hexagon Head Bolt UNF Zinc Plated Carbon Steel Hex Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
ASME B18.2.1 · Grade 5
Grade 5 Hex Head Bolt UNF Fine Thread Zinc Plated Carbon Steel ASME B18.2.1 Hexagon Bolt
- Material
- Carbon Steel
- Thread series
- UNF
- Finish
- Zinc Plated
Showing 25–48 of 143 products
Buying Guide
Common Questions
What information do you need to quote this series?
Share the standard, thread size, length, material, grade, finish and quantity. For non-standard parts, a drawing or sample helps us confirm production details faster.
Can you make sizes or materials not listed here?
Yes. We manufacture to drawing and to sample. Send your specification through the RFQ form and we will confirm feasibility, MOQ and lead time.
What inspection and material documents can you provide?
Material test certificates, dimensional inspection reports and coating reports are available on request, depending on the material and finish of your order.
What is the MOQ, and can I get samples first?
MOQ depends on size, material and finish — standard catalog sizes start lower, and custom parts are quoted per drawing. Samples are available for most standard items; mention sampling when you send the RFQ and we will confirm.
How long does production and delivery take?
Lead time is confirmed per order with your quotation. Coated and custom parts need additional production and surface-treatment time. Share your target delivery date in the RFQ and we will confirm whether we can meet it before you commit.
Drawing-led manufacturing
Can't find the exact spec?
We manufacture standard and custom fasteners to order. Tell us the size, material, grade, finish and quantity — or send your drawing — and we will confirm MOQ and lead time.