The Bolt,shoulder, cataloged under National Stock Number 5306-00-497-0342, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-497-0342 |
| Primary Part Number | 1P9956 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Head Height | 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN |
| Fastener Length | 2.910 INCHES MINIMUM AND 2.950 INCHES MAXIMUM IN |
| Shoulder Length | 1.910 INCHES MINIMUM AND 1.950 INCHES MINIMUM FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.292 INCHES MINIMUM AND 0.302 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.504 INCHES MINIMUM AND 0.505 INCHES MINIMUM FIRST SHOULDER IN |
| Thread Length | 0.670 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.901 INCHES MINIMUM AND 0.911 INCHES MAXIMUM 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 |
|---|---|
| 1P9956 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 5S6069 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| 1P9956-00 | 5/9 Secondary reference Mil-Tech Mfg Inc |
NSN 5306-00-497-0342 is a Bolt,shoulder, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-497-0342 has 1 manufacturer part number on file: 1P9956 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1P9956: Head Height: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN; Fastener Length: 2.910 INCHES MINIMUM AND 2.950 INCHES MAXIMUM IN; Shoulder Length: 1.910 INCHES MINIMUM AND 1.950 INCHES MINIMUM FIRST SHOULDER IN; Distance From Centerline to Flat: 0.292 INCHES MINIMUM AND 0.302 INCHES MAXIMUM IN. 16 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.