The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-058-8887, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-058-8887 |
| Primary Part Number | 68D050072-2207 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co |
| Status | ACTIVE |
| Extended Washer Thickness | 0.370 INCHES NOMINAL IN |
| Head Height | 0.870 INCHES NOMINAL IN |
| Fastener Length | 5.760 INCHES NOMINAL IN |
| Extended Washer Diameter | 1.250 INCHES NOMINAL IN |
| Thread Length | 3.000 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.875 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 2.467 INCHES NOMINAL IN |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 2.765 INCHES MINIMUM AND 2.795 INCHES MAXIMUM IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 1.240 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN |
| Width Between Flats | 1.031 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.410 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Thread Class | 4G G |
| Thread Quantity Per Inch | 5 |
| Material | STEEL OVERALL |
| Third Diameter From Head | 1.005 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Thread Series Designator | ACME |
| 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 |
|---|---|
| 68D050072-2207 PRIMARY | Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co (USA) |
| Reference | Meaning |
|---|---|
| 68D050072-2207 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5306-01-058-8887 is a Bolt,externally Relieved Body, manufactured by Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-058-8887 has 1 manufacturer part number on file: 68D050072-2207 (Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co).
Key specifications for 68D050072-2207: Extended Washer Thickness: 0.370 INCHES NOMINAL IN; Head Height: 0.870 INCHES NOMINAL IN; Fastener Length: 5.760 INCHES NOMINAL IN; Extended Washer Diameter: 1.250 INCHES NOMINAL IN. 21 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.