The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-105-7198, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-105-7198 |
| Primary Part Number | 845-4687720ITEM 27 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.188 INCHES NOMINAL IN |
| Head Height | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Fastener Length | 0.810 INCHES NOMINAL IN |
| Thread Length | 0.310 INCHES NOMINAL IN |
| First Diameter From Head | 0.183 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.500 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM 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 |
|---|---|
| 845-4687720ITEM 27 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 845-4687720 ITEM 27 | 5/9 Secondary reference U.S. Government activity |
| 2640-682-05 ITEM 27 | 5/2 Secondary reference U.S. Government activity |
| 4687720-0027 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 845-4558709 ITEM 27 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-105-7198 is a Bolt,internal Wrenching, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-105-7198 has 1 manufacturer part number on file: 845-4687720ITEM 27 (Naval Sea Systems Command).
Key specifications for 845-4687720ITEM 27: Width Across Flats: 0.188 INCHES NOMINAL IN; Head Height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Fastener Length: 0.810 INCHES NOMINAL IN; Thread Length: 0.310 INCHES NOMINAL IN. 16 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.