Fasteners & Attachments
Grade 5 Bolt & Lock Nut Specifications
Grade 5 bolts and lock nuts that hold the attachment to Frost 3″, 4″ and 6″ trolley brackets. Each part number is matched to a bracket: 3″ forged and stamped (zinc), 4″ forged horizontal, 4″ forged vertical, 6″ forged vertical 10″ drop, and 6″ forged 6″ x 4″ 10″ drop. The table gives thread and dimensions in inches.
Not sure which bracket you have? Measure your I-beam and drop with our trolley drop guide, or send a photo of the trolley and our team will match the bolt.
| Part Number | A | B | C | D | E | F | G | K | Type of Trolley Bracket |
|---|---|---|---|---|---|---|---|---|---|
| 0031175 | 3/4" | 5/16" | 18 NC | 1/4" | 13/64" | 1/64" | 1/2" | 3/16" | 3" Forged and Stamped (Zinc) |
| 0041115 | 1 1/2" | 3/8" | 16 NC | 3/8" | 15/64" | 1/64" | 9/16" | 7/32" | 4" Forged Horizontal |
| 0041193 | 15/16" | 3/8" | 16 NC | 5/16" | 15/64" | 1/64" | 9/16" | 7/32" | 4" Forged Vertical |
| 0061115 | 1 1/2" | 1/2" | 13 NC | 1/2" | 5/16" | 1/64" | 3/4" | 5/16" | 6" Forged Vertical 10" Drop |
| 0061117 | 1 3/4" | 1/2" | 13 NC | 1/2" | 5/16" | 1/64" | 3/4" | 5/16" | 6" Forged 6" x 4" 10" Drop |