The Screw,close Tolerance, cataloged under National Stock Number 5305-01-303-6352, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-303-6352 |
| Primary Part Number | 3M939-3-6 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN |
| Thread Length | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.300 INCHES MINIMUM AND 0.302 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 |
|---|---|
| 3M939-3-6 PRIMARY | The Boeing Company Div Defense (USA) |
| SC1823-3-6 | Howmet Global Fastening Systems Inc (USA) |
| GS1018-3-6 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| HR248-3-6PX | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC939-3-6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HR248-3-6PX | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 124894-3-6 | 5/2 Secondary reference U.S. Government activity |
| VT1731-3-6P | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AIC939-3-6P | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 3M939-3-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| VT1731-3-6 | 5/2 Secondary reference U.S. Government activity |
| SC1823-3-6P | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
NSN 5305-01-303-6352 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-303-6352 has 6 manufacturer part numbers on file: 3M939-3-6 (The Boeing Company Div Defense), SC1823-3-6 (Howmet Global Fastening Systems Inc), GS1018-3-6 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), HR248-3-6PX (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), AIC939-3-6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 1 more.
Key specifications for 3M939-3-6: Fastener Length: 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN; Thread Length: 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN; Head Style: OVAL COUNTERSUNK. 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.