The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-070-0024, 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 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-070-0024 |
| Primary Part Number | 20X53 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Head Height | 0.335 INCHES NOMINAL IN |
| Rib Included Angle | 45.0 DEGREES NOMINAL |
| Fastener Length | 2.720 INCHES NOMINAL IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.135 INCHES NOMINAL IN |
| Thread Length | 1.125 INCHES MINIMUM IN |
| Shoulder Shape | RIBBED FIRST SHOULDER |
| Rib Length | 0.440 INCHES NOMINAL IN |
| Rib Minor Diameter | 0.938 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 1.000 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 37 |
| Head Diameter | 1.328 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 |
|---|---|
| 20X53 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 20X53 | 5/9 Secondary reference T and J Industries Inc |
| P30886 | 5/9 Secondary reference Koehring Co Lorain Div |
| P30886 | 5/9 Secondary reference Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co |
NSN 5306-00-070-0024 is a Bolt,ribbed Shoulder, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-070-0024 has 1 manufacturer part number on file: 20X53 (Meritor Heavy Vehicle Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5307-00-353-0489. Verify interchangeability with system specifications before substitution.
Key specifications for 20X53: Head Height: 0.335 INCHES NOMINAL IN; Rib Included Angle: 45.0 DEGREES NOMINAL; Fastener Length: 2.720 INCHES NOMINAL IN; Distance From Largest Diameter of Bearing Surface of Head to Ribs: 0.135 INCHES NOMINAL IN. 18 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.