Description Husqvarna genuine OEM hhb, 5/16-18 x 3.5 gr5 zinc.Husqvarna 505721903Factory genuine Husqvarna part Related Products Hhb, 5/16-18 X 2 3/4 Gr5 | 510298801 MSRP: Was: Now: $1.20 Add to Cart The item has been added Hhb, 5/16-18 X 1 1/4 Gr5 | 522442601 MSRP: Was: Now: $1.10 Add to Cart The item has been added Hhb, 7/16-20 X 3 Gr5 Zinc | 510300901 MSRP: Was: Now: $2.20 Add to Cart The item has been added Hhb, 5/16-18 X 1 3/4 Gr5 Zinc | 510298401 MSRP: Was: Now: $1.10 Add to Cart The item has been added Hhb, 7/16-14 X 3 Gr5 | 522442703 MSRP: Was: Now: $1.10 Add to Cart The item has been added