Counterbore Screw 1/2-13 x 3-1/2"
(Pack of
10.0)
• Countr-Bor Screws generate higher clamp loads because they are torqued through an external drive (socket); standard hex socket head screws are torqued by an internal drive (hex key)
• Heat-treated alloy steel
• Class 3A UNC threads
• Tensile strength: 180,000 PSI (up to and including 1/2" dia.); 170,000 PSI (over 1/2" dia.)
• ANSI Specification B1.1
• All dimensional properties meet IFI-115 and SAE J58 specifications
• Lawson Countr-Bor Screws can replace any standard hex socket head screw
• 12-point screw fits into same counter-bore hole – use standard 12 point socket
NOTE: Use a wrench or socket size which corresponds to the diameter of the screw. For example, a 5/16" dia. screw is installed by using a 5/16", 12 point standard socket.
Couldn't load pickup availability
California Proposition 65: Not Applicable
www.P65Warnings.ca.gov
Frequently Bought Together
Product Description
• Countr-Bor Screws generate higher clamp loads because they are torqued through an external drive (socket); standard hex socket head screws are torqued by an internal drive (hex key)• Heat-treated alloy steel
• Class 3A UNC threads
• Tensile strength: 180,000 PSI (up to and including 1/2" dia.); 170,000 PSI (over 1/2" dia.)
• ANSI Specification B1.1
• All dimensional properties meet IFI-115 and SAE J58 specifications
• Lawson Countr-Bor Screws can replace any standard hex socket head screw
• 12-point screw fits into same counter-bore hole – use standard 12 point socket
NOTE: Use a wrench or socket size which corresponds to the diameter of the screw. For example, a 5/16" dia. screw is installed by using a 5/16", 12 point standard socket.
Technical Specifications
| Item#: | 85320 |
|---|---|
| Type | Counter-Bor |
| Diameter | 1/2 " |
| Thread Pitch | 13 |
| Thread | Coarse |
| Length | 3-1/2 " |
| Finish | Plain |
| Material | Alloy Steel |
| Head Style | 12-Point Flange |
| Size | 1/2X3-1/2 " |
| Specifications | IFI-115 |
| Tensile Strength | 180,000 PSI |
| UNSPSC #: | 31161620 |
| TAA Compliant: | Yes |
| Weight: | 2.13 lb |
Product Restrictions
California Proposition 65: Not Applicable
www.P65Warnings.ca.gov
