The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-01-421-3186, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-421-3186 |
| Primary Part Number | 4R-9842 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 88.9 MILLIMETERS NOMINAL MM |
| Shoulder Length | 18.3 MILLIMETERS NOMINAL FIRST SHOULDER MM |
| Shoulder Diameter | 25.58 MILLIMETERS NOMINAL FIRST SHOULDER MM |
| Thread Length | 57.2 MILLIMETERS NOMINAL MM |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 22.0 MILLIMETERS MM |
| Head Style | FLAT CHAMFER |
| Thread Quantity Per Inch | 1.5 |
| Thread Series Designator | M |
| Head Diameter | 33.27 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 4R-9842 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 101164 | 3/9 Design control — primary reference Webb Wheel Products Inc a Member of the Marmon Group of Companies |
NSN 5306-01-421-3186 is a Bolt,ribbed Shoulder, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-421-3186 has 1 manufacturer part number on file: 4R-9842 (Caterpillar Inc Div Caterpillar Defense).
3 possible matches (shared part number, not a government interchangeability claim): 4520-01-470-4789, 5307-01-528-2935, 5985-01-615-4157. Verify interchangeability with system specifications before substitution.
Key specifications for 4R-9842: External Thread Tolerance Class: 6G G; Fastener Length: 88.9 MILLIMETERS NOMINAL MM; Shoulder Length: 18.3 MILLIMETERS NOMINAL FIRST SHOULDER MM; Shoulder Diameter: 25.58 MILLIMETERS NOMINAL FIRST SHOULDER MM. 11 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.