The Screw,close Tolerance, cataloged under National Stock Number 5305-01-471-6546, 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 26 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-471-6546 |
| Primary Part Number | WC4068-3D2 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | West Coast Aerospace, Inc. |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Surface Finish | 32.0 MICROINCHES HEAD |
| Fastener Length | 0.531 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488, TYPE II, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.406 INCHES NOMINAL IN |
| Hole Configuration Style | ROUND |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.1900 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM 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 |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM 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 |
|---|---|
| WC4068-3D2 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HT4068-3D2A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 11883-3DL2 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M926-3DL2 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4068-3D2A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4068-3D2A PRIMARY | Huck International, Inc (USA) |
| 3M926-3DL2 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4068-3D2A PRIMARY | Hi-Shear Corporation (USA) |
| HT4068-3D2A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4068-3D2A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| Reference | Meaning |
|---|---|
| 3M926-3DL2 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4068-3D2A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-471-6546 is a Screw,close Tolerance, manufactured by West Coast Aerospace, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-471-6546 has 10 manufacturer part numbers on file: WC4068-3D2 (West Coast Aerospace, Inc.), HT4068-3D2A (Howmet Global Fastening Systems Inc), 11883-3DL2 (Reid Products Inc. Dba Reid Products Inc), 3M926-3DL2 (Fastener Innovation Technology, Inc. Dba F I T), HT4068-3D2A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 5 more.
Key specifications for WC4068-3D2: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Surface Finish: 32.0 MICROINCHES HEAD. 26 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.