The Screw,close Tolerance, cataloged under National Stock Number 5305-01-626-8199, 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 20 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-626-8199 |
| Primary Part Number | 3M938-3-9-5 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Height | 0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 0.874 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-83488, TYPE II, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM OVERALL IN |
| Material Document and Classification | AMS 5629 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Style | OVAL COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.562 INCHES NOMINAL IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.753 INCHES MINIMUM AND 0.763 INCHES MAXIMUM OVERALL IN |
| Head Diameter | 0.2966 INCHES MINIMUM AND 0.3016 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 |
|---|---|
| HT4072-3-9-5 | Howmet Global Fastening Systems Inc (USA) |
| 3M938-3-9-5 PRIMARY | The Boeing Company Div Defense (USA) |
| HT4072-3-9-5 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4072-3-9-5 | 5/2 Secondary reference U.S. Government activity |
| HT4072-3-9-5 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-626-8199 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-626-8199 has 3 manufacturer part numbers on file: HT4072-3-9-5 (Howmet Global Fastening Systems Inc), 3M938-3-9-5 (The Boeing Company Div Defense), HT4072-3-9-5 (Hi-Shear Corporation).
Key specifications for 3M938-3-9-5: Head Height: 0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 0.874 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-83488, TYPE II, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.312 INCHES NOMINAL IN. 20 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.