The Screw,close Tolerance, cataloged under National Stock Number 5305-01-133-9441, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-133-9441 |
| Primary Part Number | HT4041-3-2-6 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Fastener Length | 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Material Document and Classification | 23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE 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 CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.297 INCHES MINIMUM AND 0.301 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 |
|---|---|
| HT4041-3-2-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4041-3-2-6 PRIMARY | Hi-Shear Corporation (USA) |
| WC4041-3-2-6 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4041-3-2-6 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| 11873-3-2-6 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M707-3-2-6 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4041-3-2-6 | Huck International, Inc (USA) |
| HT4041-3-2-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4041-3-2-6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HT4041-3-2-6 | 5/9 Secondary reference U.S. Government activity |
| 3M707-3-2-6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4041-3-2-6 | 5/9 Secondary reference U.S. Government activity |
| HT4041-3-2-6 | 5/9 Secondary reference U.S. Government activity |
| 10115356 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4041-3-2-6 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-133-9441 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-133-9441 has 9 manufacturer part numbers on file: HT4041-3-2-6 (Howmet Global Fastening Systems Inc), HT4041-3-2-6 (Hi-Shear Corporation), WC4041-3-2-6 (West Coast Aerospace, Inc.), HT4041-3-2-6 (Sps Technologies Ltd, Tj Brooks Division), 11873-3-2-6 (Reid Products Inc. Dba Reid Products Inc) and 4 more.
Key specifications for HT4041-3-2-6: Fastener Length: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN; Thread Length: 0.375 INCHES NOMINAL IN; Material Document and Classification: 23-112 FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.190 INCHES IN. 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.