The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-01-292-3289, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Pdi Ground Support Systems, Inc.. Government technical data includes 20 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 | 5306-01-292-3289 |
| Primary Part Number | 6251-12 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Pdi Ground Support Systems, Inc. |
| Status | ACTIVE |
| Head Height | 0.240 INCHES NOMINAL IN |
| Rib Included Angle | 90.0 DEGREES NOMINAL |
| Fastener Length | 1.593 INCHES NOMINAL IN |
| Shoulder Length | 0.376 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 1 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633 TY 2 CL 3 ASSN STD 1ST TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.563 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.938 INCHES NOMINAL IN |
| Shoulder Shape | RIBBED FIRST SHOULDER |
| Rib Length | 0.376 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | BEVEL-CONICAL |
| Thread Direction | RIGHT-HAND |
| Rib Major Diameter | 0.563 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Minimum Tensile Strength | 110000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.750 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 |
|---|---|
| 6251-12 PRIMARY | Pdi Ground Support Systems, Inc. (USA) |
NSN 5306-01-292-3289 is a Bolt,ribbed Shoulder, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-292-3289 has 1 manufacturer part number on file: 6251-12 (Pdi Ground Support Systems, Inc.).
Key specifications for 6251-12: Head Height: 0.240 INCHES NOMINAL IN; Rib Included Angle: 90.0 DEGREES NOMINAL; Fastener Length: 1.593 INCHES NOMINAL IN; Shoulder Length: 0.376 INCHES NOMINAL FIRST SHOULDER 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.