The Screw Assembly,panel, cataloged under National Stock Number 5305-01-406-2181, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Div Huck Products Division. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-406-2181 |
| Primary Part Number | CPR7900HS-6-D-3 |
| Item Name | Screw Assembly,panel |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc. Div Huck Products Division |
| Status | ACTIVE |
| Width Across Flats | 0.109 INCHES NOMINAL IN |
| Head Height | 0.136 INCHES NOMINAL IN |
| Fastener Length | 0.535 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Accommodated Thickness | 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Thread Length | 0.163 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-S-23195 MIL SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| Material Document and Classification | AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 FASTENER |
| Material | STEEL COMP 304 STAND-OFF |
| Material | STEEL COMP 301 PRIMARY WASHER |
| Thread Series Designator | UNJC |
| Head Diameter | 0.221 INCHES NOMINAL 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 |
|---|---|
| CPR7900HS-6-D-3 PRIMARY | Huck International, Inc. Div Huck Products Division (USA) |
| CS3082HS-06-3-4 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| CPR7900HS-6-D-3 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5305-01-406-2181 is a Screw Assembly,panel, manufactured by Huck International, Inc. Div Huck Products Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-406-2181 has 2 manufacturer part numbers on file: CPR7900HS-6-D-3 (Huck International, Inc. Div Huck Products Division), CS3082HS-06-3-4 (Fastener Innovation Technology, Inc. Dba F I T).
Key specifications for CPR7900HS-6-D-3: Width Across Flats: 0.109 INCHES NOMINAL IN; Head Height: 0.136 INCHES NOMINAL IN; Fastener Length: 0.535 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 21 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.