The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-208-1391, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. Government technical data includes 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-208-1391 |
| Primary Part Number | 20X209 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Head Height | 0.312 INCHES NOMINAL IN |
| Rib Included Angle | 90.0 DEGREES NOMINAL |
| Fastener Length | 2.375 INCHES NOMINAL IN |
| Shoulder Length | 0.688 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.125 INCHES NOMINAL IN |
| Shoulder Diameter | 0.9740 INCHES MINIMUM AND 0.9750 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.056 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Rib Length | 0.562 INCHES NOMINAL IN |
| Rib Minor Diameter | 0.9268 INCHES MINIMUM AND 0.9308 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | LEFT-HAND |
| Rib Major Diameter | 0.9980 INCHES MINIMUM AND 1.0060 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 36 |
| Head Diameter | 1.312 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 |
|---|---|
| 20X209 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
NSN 5306-00-208-1391 is a Bolt,ribbed Shoulder, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-208-1391 has 1 manufacturer part number on file: 20X209 (Meritor Heavy Vehicle Systems, Llc).
Key specifications for 20X209: Head Height: 0.312 INCHES NOMINAL IN; Rib Included Angle: 90.0 DEGREES NOMINAL; Fastener Length: 2.375 INCHES NOMINAL IN; Shoulder Length: 0.688 INCHES NOMINAL FIRST SHOULDER IN. 20 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.