The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-099-7323, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-099-7323 |
| Primary Part Number | 123CVM10203-511 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.187 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Rib Included Angle | 45.0 DEGREES NOMINAL |
| Fastener Length | 3.374 INCHES NOMINAL IN |
| Shoulder Length | 1.334 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.228 INCHES NOMINAL IN |
| Shoulder Diameter | 0.3720 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.396 INCHES MINIMUM IN |
| Shoulder Shape | RIBBED FIRST SHOULDER |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Rib Length | 1.334 INCHES NOMINAL IN |
| Rib Minor Diameter | 0.3457 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Rib Major Diameter | 0.3720 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 410 OVERALL |
| Thread Series Designator | UNF |
| Rib Quantity | 36 |
| Head Diameter | 0.640 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 |
|---|---|
| 123CVM10203-511 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123CVM10203-511 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5306-00-099-7323 is a Bolt,ribbed Shoulder, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-099-7323 has 1 manufacturer part number on file: 123CVM10203-511 (Northrop Grumman Systems Corporation).
Key specifications for 123CVM10203-511: Head Height: 0.187 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN; Rib Included Angle: 45.0 DEGREES NOMINAL; Fastener Length: 3.374 INCHES NOMINAL IN; Shoulder Length: 1.334 INCHES NOMINAL FIRST SHOULDER IN. 23 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.