The Screw,assembled Washer, cataloged under National Stock Number 5305-01-671-2103, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sems and Specials, Inc. Dba Sems & Specials Inc. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-671-2103 |
| Primary Part Number | 95092A623 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sems and Specials, Inc. Dba Sems & Specials Inc |
| Status | ACTIVE |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Secondary Washer Relationship to Primary Washer | NOT IDENTICAL |
| Primary Washer Outside Diameter | 0.558 INCHES MINIMUM AND 0.568 INCHES MAXIMUM IN |
| Secondary Washer Style | SPLIT HELICAL RING |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.036 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| Washer Quantity | 2 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5305-01-671-2103 is a Screw,assembled Washer, manufactured by Sems and Specials, Inc. Dba Sems & Specials Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-671-2103 has 2 manufacturer part numbers on file: 95092A623 (Mcmaster-Carr Supply Co), 95092A623 (Sems and Specials, Inc. Dba Sems & Specials Inc).
Key specifications for 95092A623: Fastener Length: 0.500 INCHES NOMINAL IN; Secondary Washer Relationship to Primary Washer: NOT IDENTICAL; Primary Washer Outside Diameter: 0.558 INCHES MINIMUM AND 0.568 INCHES MAXIMUM IN; Secondary Washer Style: SPLIT HELICAL RING. 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.