Material Composition:

solid masonry and hollow masonry

3/4-10 x 4 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

3/4-16 x 3 Flat Socket Cap Screw Alloy

Manufactured to NAS 907 Type J specifications Jobber flute lengths for drilling holes in hard to reach places Heavy duty construction for portable or machine drilling For use in drilling in high tensile strength alloy steels

1-8 x 4 1/2 Socket Set Screw Cup Point Alloy Square Trim-Head Sharp Point Drywall Screws Phosphate Coating Material Composition:1 8 x 4 1 2 Socket Set Screw Cup Point Alloy . A headless screw threaded the entire length. It has a hexagonal drive at one end and a cup shaped indentation at the other end. The cup point is the most used style set screw. Designed for fast, permanent and semi permanent location of parts on shafts with hardness differential of 10 15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable. Hardness: Rockwell C45 53.