The Bolt,machine, cataloged under National Stock Number 5306-01-408-6483, 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 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-408-6483 |
| Primary Part Number | 203-5486491ITEM18MOD |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.940 INCHES NOMINAL IN |
| Fastener Length | 12.500 INCHES NOMINAL IN |
| Thread Length | 3.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-286 FORM 2 COND HF,AF FIN A FED SPEC ALL MATERIAL RESPONSES FASTENER |
| Nominal Thread Diameter | 1.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 2.250 INCHES NOMINAL IN |
| Locking Feature | PELLET THREADS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 6 |
| Material | NICKEL ALLOY OVERALL |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE LOCKING FEATURE |
| Material | NICKEL ALLOY K-500 OR NICKEL ALLOY 502 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 203-5486491ITEM18MOD PRIMARY | Naval Sea Systems Command (USA) |
| ENDM103969ITEM18 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 21107109 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-408-6483 is a Bolt,machine, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-408-6483 has 2 manufacturer part numbers on file: 203-5486491ITEM18MOD (Naval Sea Systems Command), ENDM103969ITEM18 (Naval Sea Systems Command).
Key specifications for 203-5486491ITEM18MOD: Head Height: 0.940 INCHES NOMINAL IN; Fastener Length: 12.500 INCHES NOMINAL IN; Thread Length: 3.500 INCHES NOMINAL IN; Material Document and Classification: QQ-N-286 FORM 2 COND HF,AF FIN A FED SPEC ALL MATERIAL RESPONSES FASTENER. 15 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.