The Screw,assembled Washer, cataloged under National Stock Number 5305-01-103-4155, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-103-4155 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.098 INCHES NOMINAL IN |
| Fastener Length | 0.325 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-F-14072 -262A MIL SPEC SINGLE TREATMENT RESPONSE HEAD A |
| Primary Washer Outside Diameter | 0.172 INCHES MAXIMUM IN |
| Thread Length | 0.140 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-6758 COND C AND 4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FILLISTER |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE HEAD |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 4130 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.173 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 |
| Reference | Meaning |
|---|---|
| SM-B-447300 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-103-4155 is a Screw,assembled Washer, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-103-4155: Head Height: 0.098 INCHES NOMINAL IN; Fastener Length: 0.325 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-F-14072 -262A MIL SPEC SINGLE TREATMENT RESPONSE HEAD A; Primary Washer Outside Diameter: 0.172 INCHES MAXIMUM IN. 20 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.