The Bolt,shoulder, cataloged under National Stock Number 5306-01-190-2180, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-190-2180 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.190 INCHES NOMINAL IN |
| Fastener Length | 3.245 INCHES MINIMUM AND 3.255 INCHES MAXIMUM IN |
| Shoulder Length | 0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM SECOND SHOULDER IN |
| Shoulder Length | 0.350 INCHES NOMINAL FOURTH HOLE IN |
| Shoulder Diameter | 0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM FOURTH HOLE IN |
| Shoulder Diameter | 0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM SECOND SHOULDER IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.240 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.115 INCHES MINIMUM AND 3.125 INCHES MAXIMUM FIRST HOLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3797183 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-190-2180 is a Bolt,shoulder, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-190-2180: Head Height: 0.190 INCHES NOMINAL IN; Fastener Length: 3.245 INCHES MINIMUM AND 3.255 INCHES MAXIMUM IN; Shoulder Length: 0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM SECOND SHOULDER IN; Shoulder Length: 0.350 INCHES NOMINAL FOURTH HOLE 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.