The Screw,close Tolerance, cataloged under National Stock Number 5305-01-007-4092, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is West Coast Aerospace, Inc.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-007-4092 |
| Primary Part Number | WC4025L-4-25 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | West Coast Aerospace, Inc. |
| Status | ACTIVE |
| Fastener Length | 2.016 INCHES MINIMUM AND 2.046 INCHES MAXIMUM IN |
| Thread Length | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 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 | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.497 INCHES MINIMUM AND 0.507 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 |
|---|---|
| 11905-4L25 | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC4025L-4-25 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4025L4-25 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT4025L4-25 PRIMARY | Hi-Shear Corporation (USA) |
| HT4025L4-25 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4025L4-25 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4025L4-25 | Satair A/s (DNK) |
| ST3M454-4L25 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| HT4025L4-25 | 5/9 Secondary reference Sps Technologies Inc |
| HT4025L4-25 | 5/9 Secondary reference U.S. Government activity |
| HT4025L4-25 | 3/2 Design control — primary reference U.S. Government activity |
| HT4025L4-25 | 5/9 Secondary reference U.S. Government activity |
| ST3M454-4L25 | 5/2 Secondary reference U.S. Government activity |
| HT4025L4-25 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M454-4L25 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5305-01-007-4092 is a Screw,close Tolerance, manufactured by West Coast Aerospace, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-007-4092 has 8 manufacturer part numbers on file: 11905-4L25 (Reid Products Inc. Dba Reid Products Inc), WC4025L-4-25 (West Coast Aerospace, Inc.), HT4025L4-25 (Fairchild Fasteners Europe - Vsd Gmbh), HT4025L4-25 (Hi-Shear Corporation), HT4025L4-25 (Howmet Global Fastening Systems Inc) and 3 more.
Key specifications for WC4025L-4-25: Fastener Length: 2.016 INCHES MINIMUM AND 2.046 INCHES MAXIMUM IN; Thread Length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FLAT COUNTERSUNK. 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.