The Bolt,hook, cataloged under National Stock Number 5306-01-231-5159, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Link-Belt Cranes, L.p., Lllp. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-231-5159 |
| Primary Part Number | 37A691 |
| Item Name | Bolt,hook |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Link-Belt Cranes, L.p., Lllp |
| Status | ACTIVE |
| Distance From Inside of Bend to Shank End | 9.063 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES NOMINAL IN |
| Hook Inside Width | 0.813 INCHES NOMINAL IN |
| Style Designator | ACUTE ANGLE BEND |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1018 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 37A691 PRIMARY | Link-Belt Cranes, L.p., Lllp (USA) |
| Reference | Meaning |
|---|---|
| 18A504 | 5/9 Secondary reference Link-Belt Cranes, L.p., Lllp |
NSN 5306-01-231-5159 is a Bolt,hook, manufactured by Link-Belt Cranes, L.p., Lllp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-231-5159 has 1 manufacturer part number on file: 37A691 (Link-Belt Cranes, L.p., Lllp).
Key specifications for 37A691: Distance From Inside of Bend to Shank End: 9.063 INCHES NOMINAL IN; Thread Length: 1.500 INCHES NOMINAL IN; Hook Inside Width: 0.813 INCHES NOMINAL IN; Style Designator: ACUTE ANGLE BEND. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.