The Screw,close Tolerance, cataloged under National Stock Number 5305-00-447-3787, 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 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-447-3787 |
| Primary Part Number | HT4024L5-11-1 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Fastener Length | 1.204 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN |
| Thread Length | 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.429 INCHES MINIMUM AND 0.477 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 |
|---|---|
| ST3M455-5L11-1 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 11907-5L11-1 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4024L5-11-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4024L5-11-1 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4024L5-11-1 | Huck International, Inc (USA) |
| 11907-5L11 | Reid Products Inc. Dba Reid Products Inc (USA) |
| HT4024L5-11-1 | Satair A/s (DNK) |
| WC4024L5-11 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4024L5-11-1 PRIMARY | Hi-Shear Corporation (USA) |
| HT4024L5-11-1 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| Reference | Meaning |
|---|---|
| HT4024L5-11-1 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| ST3M455-5L11 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST3M455L5-11 | 5/9 Secondary reference Plastic Sealing Corp |
| HT4024L5-11 | 5/9 Secondary reference U.S. Government activity |
| HT4024L5-11 | 5/9 Secondary reference Hi-Shear Corporation |
| HT4024L5-11 | 5/9 Secondary reference U.S. Government activity |
| HT4024L5-11-1 | 5/9 Secondary reference Sps Technologies Inc |
| HT4024L5-11 | 5/9 Secondary reference Fairchild Fasteners Europe - Vsd Gmbh |
| HT4024L5-11-1 | 5/9 Secondary reference U.S. Government activity |
| HT4024L5-11 | 5/9 Secondary reference U.S. Government activity |
| HT4024L5-11-1 | 3/2 Design control — primary reference U.S. Government activity |
| 10125299 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HT4024L5-11-1 | 5/9 Secondary reference U.S. Government activity |
| ST3M455-5L11-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-00-447-3787 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-447-3787 has 10 manufacturer part numbers on file: ST3M455-5L11-1 (Fastener Innovation Technology, Inc. Dba F I T), 11907-5L11-1 (Reid Products Inc. Dba Reid Products Inc), HT4024L5-11-1 (Howmet Global Fastening Systems Inc), HT4024L5-11-1 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4024L5-11-1 (Huck International, Inc) and 5 more.
Key specifications for HT4024L5-11-1: Fastener Length: 1.204 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN; Thread Length: 0.506 INCHES MINIMUM AND 0.556 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.312 INCHES IN; Head Style: FLAT 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.