9/16"-12 x 2 1/2" Hex Cap Screws / Grade 8 / Zinc Yellow / Made in USA
- Steel
- Grade 8
- Zinc Yellow
- 12 TPI · Coarse
- ASME B18.2.1
$105.11
$6.18 / pc
Package of 17
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Product Description
9/16"-12 x 2 1/2" Hex Cap Screws / Grade 8 / Zinc Yellow / Made in USA
9/16"-12 x 2 1/2" hex cap screw in Alloy Steel, Grade 8, zinc yellow finish. For machinery, structural and general assembly wherever a wrench can reach.
- HEX HEAD — driven with a socket or wrench, so you can put real torque through it without a bit camming out
- HEX DRIVE — wrench or socket driven — the highest practical torque and no bit to cam out
- YELLOW ZINC — zinc plating with a yellow chromate conversion coat, slightly better protected than clear zinc; interior and sheltered use
- PARTIAL THREAD — an unthreaded shank under the head carries shear on the solid section and lets the joint pull tight rather than jacking apart
- SAE GRADE 8 — medium carbon alloy, quenched and tempered — 150,000 PSI tensile; six radial lines on the head, for suspension, towing and high-clamp joints
RoHS Compliant🇺🇸 Made in USA
Frequently Asked Questions
What is the difference between Grade 5 and Grade 8?
Grade 5 (medium carbon steel, 120 ksi tensile strength) is suitable for most industrial applications. Grade 8 (alloy steel, 150 ksi tensile strength) is used for high-strength applications like automotive suspension and machinery. Grade 5 hex heads have 3 radial lines; Grade 8 has 6 radial lines.
What is the difference between partial thread and full thread?
Partial thread (also called shoulder bolt or tap bolt) has an unthreaded shank for shear strength. Full thread (fully threaded cap screw) provides more clamping engagement. Standard cap screws above 6 inches long are typically partial thread.
$105.11
$6.18/pc
Hex Cap Screws / Grade 8 / Zinc Yellow
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9/16"-12 x 2 1/2" Hex Cap Screws / Grade 8 / Zinc Yellow / Made in USA
SKU: 5640CH8O-17
Technical Specifications
Thread Size
9/16"-12
Thread Series
UNC
Thread Pitch
12 TPI
Thread Coverage
Partial Thread
Length
2 1/2"
Material
Steel
Grade
Grade 8
Finish
Zinc Yellow
Drive
External Hex
Head Style
Hex Head
Standard
ASME B18.2.1
Country of Origin
USA
Tensile Strength
150 ksi (1034 MPa)
Hardness
C33 - C39
Measurement System
Inch
Width Across Flats
13/16"
SKU
5640CH8O-17
https://www.ecomfasteners.com/products/9-16-12-x-2-1-2-hex-cap-screws-grade-8-zinc-yellow · Printed