The Washer,flat, cataloged under National Stock Number 5310-01-420-2155, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is All Power Manufacturing Co.. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-420-2155 |
| Primary Part Number | S124682-3S6-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | All Power Manufacturing Co. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 ,T2,CL2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN |
| Thickness | 0.020 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 |
|---|---|
| S124682-3S6-1 PRIMARY | All Power Manufacturing Co. (USA) |
| S124682-3S6-1 PRIMARY | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| S124682-3S6-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-420-2155 is a Washer,flat, manufactured by All Power Manufacturing Co., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-420-2155 has 2 manufacturer part numbers on file: S124682-3S6-1 (All Power Manufacturing Co.), S124682-3S6-1 (Anillo Industries Llc).
Key specifications for S124682-3S6-1: Surface Treatment Document and Classification: QQ-P-416 ,T2,CL2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.