The Screw,assembled Washer, cataloged under National Stock Number 5305-01-588-7705, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-588-7705 |
| Primary Part Number | 90402A110 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Head Height | 0.098 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Thread Pitch in Millimeters | 1.0 |
| Primary Washer Outside Diameter | 0.230 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Supplementary Features | WASHER MATERIAL C1050 TO C1065 STEEL; PHILLIPS DRIVE NO 1 |
| Hardness Rating | 60.0 ROCKWELL B NOMINAL OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | UNDERCUT PAN NO. 2 |
| Primary Washer Style | FLAT EXTERNAL TEETH |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.018 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | CROSS RECESS TYPE II |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Material | STEEL COMP 1050 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 PRIMARY WASHER |
| Thread Series Designator | M |
| Washer Quantity | 1 |
| Head Diameter | 0.219 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 |
|---|---|
| 90402A110 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-588-7705 is a Screw,assembled Washer, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-588-7705 has 1 manufacturer part number on file: 90402A110 (Mcmaster-Carr Supply Co).
Key specifications for 90402A110: Head Height: 0.098 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Pitch in Millimeters: 1.0; Primary Washer Outside Diameter: 0.230 INCHES NOMINAL IN. 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.