The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-01-055-6876, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Titan Distribution Inc Dba Titan Tire. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-055-6876 |
| Primary Part Number | 5081 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Titan Distribution Inc Dba Titan Tire |
| Status | ACTIVE |
| Head Height | 0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| Fastener Length | 1.625 INCHES MINIMUM AND 1.656 INCHES MAXIMUM IN |
| Shoulder Length | 0.437 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.062 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.6125 INCHES MINIMUM AND 0.6195 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.188 INCHES MINIMUM AND 1.219 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Rib Length | 0.376 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.612 INCHES MINIMUM AND 0.619 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 39 |
| Head Diameter | 0.812 INCHES NOMINAL IN |
| 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 |
|---|---|
| 5081 PRIMARY | Titan Distribution Inc Dba Titan Tire (USA) |
| Reference | Meaning |
|---|---|
| 5081 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-055-6876 is a Bolt,ribbed Shoulder, manufactured by Titan Distribution Inc Dba Titan Tire, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-055-6876 has 1 manufacturer part number on file: 5081 (Titan Distribution Inc Dba Titan Tire).
Key specifications for 5081: Head Height: 0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN; Fastener Length: 1.625 INCHES MINIMUM AND 1.656 INCHES MAXIMUM IN; Shoulder Length: 0.437 INCHES NOMINAL FIRST SHOULDER IN; Distance From Largest Diameter of Bearing Surface of Head to Ribs: 0.062 INCHES MAXIMUM IN. 19 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.