The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-01-181-8009, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 22 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-181-8009 |
| Primary Part Number | 23014542 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Head Height | 0.188 INCHES NOMINAL IN |
| Rib Included Angle | 85.0 DEGREES NOMINAL |
| Fastener Length | 1.330 INCHES MINIMUM AND 1.360 INCHES MAXIMUM IN |
| Shoulder Length | 0.260 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Centerline to Flat | 0.166 INCHES NOMINAL IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.030 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.317 INCHES MINIMUM AND 0.321 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.840 INCHES MINIMUM IN |
| Shoulder Shape | RIBBED FIRST SHOULDER |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Rib Length | 0.260 INCHES NOMINAL IN |
| Rib Minor Diameter | 0.317 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.321 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 1335 OR STEEL COMP 1541 OVERALL |
| Thread Series Designator | UNRF |
| Rib Quantity | 33 |
| Head Diameter | 0.624 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 |
|---|---|
| 23014542 PRIMARY | Rolls-Royce Corporation (USA) |
NSN 5306-01-181-8009 is a Bolt,ribbed Shoulder, manufactured by Rolls-Royce Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-181-8009 has 1 manufacturer part number on file: 23014542 (Rolls-Royce Corporation).
Key specifications for 23014542: Head Height: 0.188 INCHES NOMINAL IN; Rib Included Angle: 85.0 DEGREES NOMINAL; Fastener Length: 1.330 INCHES MINIMUM AND 1.360 INCHES MAXIMUM IN; Shoulder Length: 0.260 INCHES NOMINAL FIRST SHOULDER IN. 22 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.