The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-853-4524, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Meritor Industrial Products, Llc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-853-4524 |
| Primary Part Number | 20X882 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Meritor Industrial Products, Llc |
| Status | ACTIVE |
| Head Height | 0.310 INCHES NOMINAL IN |
| Rib Included Angle | 90.0 DEGREES NOMINAL |
| Fastener Length | 3.310 INCHES NOMINAL IN |
| Shoulder Length | 1.250 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.620 INCHES NOMINAL IN |
| Shoulder Diameter | 0.974 INCHES MINIMUM AND 0.975 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.590 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Rib Length | 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Rib Minor Diameter | 0.945 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.938 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.998 INCHES MINIMUM AND 1.006 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UN |
| Rib Quantity | 36 |
| Head Diameter | 1.310 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 |
NSN 5306-00-853-4524 is a Bolt,ribbed Shoulder, manufactured by Meritor Industrial Products, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-853-4524 has 2 manufacturer part numbers on file: 20X882 (Meritor Industrial Products, Llc), 20X882 (Meritor Heavy Vehicle Systems, Llc).
Key specifications for 20X882: Head Height: 0.310 INCHES NOMINAL IN; Rib Included Angle: 90.0 DEGREES NOMINAL; Fastener Length: 3.310 INCHES NOMINAL IN; Shoulder Length: 1.250 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.