The Bolt,ribbed Shoulder, cataloged under National Stock Number 5306-00-175-3078, 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 17 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. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-175-3078 |
| Primary Part Number | 26-806 |
| Item Name | Bolt,ribbed Shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Pdi Ground Support Systems, Inc. |
| Status | ACTIVE |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 2.125 INCHES NOMINAL IN |
| Shoulder Length | 0.250 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Largest Diameter of Bearing Surface of Head to Ribs | 0.750 INCHES NOMINAL IN |
| Shoulder Diameter | 0.783 INCHES MINIMUM AND 0.786 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.375 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Rib Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | LEFT-HAND |
| Rib Major Diameter | 0.812 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.250 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 |
|---|---|
| 26-806 PRIMARY | Pdi Ground Support Systems, Inc. (USA) |
NSN 5306-00-175-3078 is a Bolt,ribbed Shoulder, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-175-3078 has 1 manufacturer part number on file: 26-806 (Pdi Ground Support Systems, Inc.).
4 possible matches (shared part number, not a government interchangeability claim): 5999-01-114-8139, 6150-01-214-4388, 6150-01-300-2184. Verify interchangeability with system specifications before substitution.
Key specifications for 26-806: Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 2.125 INCHES NOMINAL IN; Shoulder Length: 0.250 INCHES NOMINAL FIRST SHOULDER IN; Distance From Largest Diameter of Bearing Surface of Head to Ribs: 0.750 INCHES NOMINAL IN. 17 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.