The Bolt,machine, cataloged under National Stock Number 5306-01-648-3019, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-648-3019 |
| Primary Part Number | NAS428CH6A16 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.203 INCHES NOMINAL IN |
| Fastener Length | 1.953 INCHES NOMINAL IN |
| Thread Length | 1.750 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.3750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.563 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 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 |
|---|---|
| NAS428CH6A16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| NAS428CH6A16 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| NAS428CH6A16 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| NAS428CH6A16 | Fastener Technology Corp (USA) |
| NAS428CH6A16 | Saturn Fasteners Inc (USA) |
| NAS428CH6A16 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| Reference | Meaning |
|---|---|
| NAS428CH6A16 | 3/2 Design control — primary reference U.S. Government activity |
| NAS428CH6A16 | 5/2 Secondary reference U.S. Government activity |
| NAS428 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5306-01-648-3019 is a Bolt,machine, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-648-3019 has 6 manufacturer part numbers on file: NAS428CH6A16 (Sps Technologies, Llc Dba PB Fasteners), NAS428CH6A16 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), NAS428CH6A16 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), NAS428CH6A16 (Fastener Technology Corp), NAS428CH6A16 (Saturn Fasteners Inc) and 1 more.
Key specifications for NAS428CH6A16: Head Height: 0.203 INCHES NOMINAL IN; Fastener Length: 1.953 INCHES NOMINAL IN; Thread Length: 1.750 INCHES NOMINAL IN; Nominal Thread Diameter: 0.3750 INCHES IN. 12 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.