The Screw,close Tolerance, cataloged under National Stock Number 5305-01-351-6320, is classified within Federal Supply Class 5305 (Screws) 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 15 specifications, cited from the U.S. Government catalog. The record lists 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-351-6320 |
| Primary Part Number | 03A225-3-7 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Fastener Length | 0.786 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN |
| Thread Length | 0.363 INCHES NOMINAL IN |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3825 INCHES MINIMUM AND 0.3911 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 |
|---|---|
| HR246-3-7 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| PBF1484-3-7 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC1700-3-7 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 03A225-3-7 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 03A225-3-7 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| SC5027-3-7 | Howmet Global Fastening Systems Inc (USA) |
| DF33001V-3T-7 | Huck International, Inc. Div Huck Products Division (USA) |
| SLB212-3-7 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| HR246-3-7 | Hi-Shear Corporation (USA) |
| 03A22 | Computer Power Cabling Corp (USA) |
| Reference | Meaning |
|---|---|
| 123992-3-7 | 5/2 Secondary reference U.S. Government activity |
| DF33001V-3T-7 | 5/9 Secondary reference U.S. Government activity |
| 123992-3-7 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-351-6320 is a Screw,close Tolerance, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-351-6320 has 10 manufacturer part numbers on file: HR246-3-7 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), PBF1484-3-7 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC1700-3-7 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 03A225-3-7 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 03A225-3-7 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems) and 5 more.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-451-3632. Verify interchangeability with system specifications before substitution.
Key specifications for 03A225-3-7: Fastener Length: 0.786 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN; Thread Length: 0.363 INCHES NOMINAL IN; Material Document and Classification: AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.190 INCHES IN. 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.