The Bolt,shoulder, cataloged under National Stock Number 5306-01-348-2651, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-348-2651 |
| Primary Part Number | 03A217-4-28 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Head Height | 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Fastener Length | 2.160 INCHES MINIMUM AND 2.190 INCHES MAXIMUM IN |
| Shoulder Length | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 95000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 03A217-4-28 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| VS3364-4-28 | Howmet Global Fastening Systems Inc (USA) |
| AIC1699-4-28 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1480-4-28 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BA0017AC3-4-28 | Lfc Industries, Inc. (USA) |
| 03A217-4-28 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| VS3364-4-28 | 5/9 Secondary reference U.S. Government activity |
| 124231-4-28 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-348-2651 is a Bolt,shoulder, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-348-2651 has 6 manufacturer part numbers on file: 03A217-4-28 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), VS3364-4-28 (Howmet Global Fastening Systems Inc), AIC1699-4-28 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF1480-4-28 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BA0017AC3-4-28 (Lfc Industries, Inc.) and 1 more.
Key specifications for 03A217-4-28: Head Height: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN; Fastener Length: 2.160 INCHES MINIMUM AND 2.190 INCHES MAXIMUM IN; Shoulder Length: 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.